./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a 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_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU --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 32bit --witnessprinter.graph.data.programhash a7241ade69e14c61e98aa837796de568ecf31fbd07f5084e15c262d93cdb3376 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:12,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:12,187 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-31 22:09:12,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:12,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:12,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:12,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:12,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:12,239 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:12,239 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:12,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:12,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:12,241 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:12,243 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:09:12,246 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:09:12,247 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:09:12,247 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:09:12,248 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:09:12,248 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:09:12,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:12,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:09:12,249 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:12,249 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:12,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:12,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:12,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:09:12,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:09:12,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:09:12,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:12,252 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:09:12,252 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:12,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:12,253 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:09:12,253 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:12,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:12,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:12,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:12,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:12,256 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:09:12,256 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_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7241ade69e14c61e98aa837796de568ecf31fbd07f5084e15c262d93cdb3376 [2024-10-31 22:09:12,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:12,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:12,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:12,585 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:12,585 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:12,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/recursive/McCarthy91-1.c Unable to find full path for "g++" [2024-10-31 22:09:14,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:14,803 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:14,804 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/sv-benchmarks/c/recursive/McCarthy91-1.c [2024-10-31 22:09:14,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/data/463e3170e/06209d75e4014d45a124c04cfb48e51b/FLAGed9317161 [2024-10-31 22:09:15,189 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/data/463e3170e/06209d75e4014d45a124c04cfb48e51b [2024-10-31 22:09:15,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:15,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:15,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:15,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:15,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:15,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f88a733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15, skipping insertion in model container [2024-10-31 22:09:15,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,223 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:15,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:15,405 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:15,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:15,431 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:15,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15 WrapperNode [2024-10-31 22:09:15,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:15,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:15,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:15,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:15,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,462 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2024-10-31 22:09:15,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:15,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:15,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:15,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:15,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,486 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:09:15,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,493 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:15,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:15,504 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:15,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:15,505 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (1/1) ... [2024-10-31 22:09:15,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:15,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:15,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:15,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:09:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2024-10-31 22:09:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2024-10-31 22:09:15,632 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:15,634 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:09:15,742 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-31 22:09:15,742 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:09:15,755 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:09:15,756 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:09:15,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:15 BoogieIcfgContainer [2024-10-31 22:09:15,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:09:15,758 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:09:15,758 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:09:15,763 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:09:15,764 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:09:15,764 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:09:15" (1/3) ... [2024-10-31 22:09:15,766 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43d55f8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:09:15, skipping insertion in model container [2024-10-31 22:09:15,766 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:09:15,766 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:15" (2/3) ... [2024-10-31 22:09:15,767 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43d55f8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:09:15, skipping insertion in model container [2024-10-31 22:09:15,767 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:09:15,767 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:15" (3/3) ... [2024-10-31 22:09:15,769 INFO L332 chiAutomizerObserver]: Analyzing ICFG McCarthy91-1.c [2024-10-31 22:09:15,832 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:09:15,832 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:09:15,833 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:09:15,833 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:09:15,833 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:09:15,833 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:09:15,834 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:09:15,834 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:09:15,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:09:15,857 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:09:15,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:09:15,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:09:15,863 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 22:09:15,863 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:09:15,863 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:09:15,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:09:15,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:09:15,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:09:15,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:09:15,867 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 22:09:15,867 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:09:15,875 INFO L745 eck$LassoCheckResult]: Stem: 15#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 14#L28true call main_#t~ret7#1 := f91(main_~x~0#1);< 12#$Ultimate##0true [2024-10-31 22:09:15,876 INFO L747 eck$LassoCheckResult]: Loop: 12#$Ultimate##0true ~x := #in~x; 8#L18true assume !(~x > 100); 10#L21true call #t~ret4 := f91(11 + ~x);< 12#$Ultimate##0true [2024-10-31 22:09:15,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash 29879, now seen corresponding path program 1 times [2024-10-31 22:09:15,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971493106] [2024-10-31 22:09:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:15,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:15,985 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:16,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:16,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:16,014 INFO L85 PathProgramCache]: Analyzing trace with hash 46807, now seen corresponding path program 1 times [2024-10-31 22:09:16,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:16,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170864628] [2024-10-31 22:09:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:16,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:16,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:16,031 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:16,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:16,033 INFO L85 PathProgramCache]: Analyzing trace with hash 890142305, now seen corresponding path program 1 times [2024-10-31 22:09:16,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:16,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518830253] [2024-10-31 22:09:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:16,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:16,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:16,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:16,203 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:09:16,206 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:09:16,207 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:09:16,207 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:09:16,207 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:09:16,207 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:16,207 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:09:16,208 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:09:16,208 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2024-10-31 22:09:16,208 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:09:16,208 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:09:16,227 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:16,240 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:16,270 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:16,280 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:16,292 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:16,387 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:09:16,388 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:09:16,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:16,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:16,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:16,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-31 22:09:16,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:09:16,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:16,443 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:09:16,444 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:09:16,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:16,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:16,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:16,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:16,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-31 22:09:16,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:09:16,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:16,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-31 22:09:16,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:16,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:16,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:16,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 22:09:16,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:09:16,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:17,236 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:09:17,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:17,242 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:09:17,242 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:09:17,243 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:09:17,243 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:09:17,243 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:09:17,243 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:17,243 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:09:17,243 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:09:17,243 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2024-10-31 22:09:17,243 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:09:17,243 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:09:17,245 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:17,260 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:17,279 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:17,289 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:17,299 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:17,375 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:09:17,381 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:09:17,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:17,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:17,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:17,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 22:09:17,392 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 [2024-10-31 22:09:17,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:17,408 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:17,409 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:17,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:17,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:17,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:17,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:17,422 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:09:17,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-31 22:09:17,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:17,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:17,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:17,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 22:09:17,450 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 [2024-10-31 22:09:17,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:17,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:17,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:17,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:17,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:17,470 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:17,471 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:17,482 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:09:17,487 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:09:17,487 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:09:17,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:17,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:17,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:17,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 22:09:17,506 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:09:17,506 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:09:17,507 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:09:17,507 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2024-10-31 22:09:17,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-31 22:09:17,529 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:09:17,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:17,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:09:17,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:17,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:09:17,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:17,751 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-10-31 22:09:17,753 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:17,892 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 43 transitions. Complement of second has 16 states. [2024-10-31 22:09:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 22:09:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:17,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2024-10-31 22:09:17,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2024-10-31 22:09:17,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:17,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2024-10-31 22:09:17,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:17,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2024-10-31 22:09:17,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:17,909 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2024-10-31 22:09:17,912 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:09:17,919 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2024-10-31 22:09:17,920 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-10-31 22:09:17,921 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-10-31 22:09:17,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2024-10-31 22:09:17,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:09:17,923 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-10-31 22:09:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2024-10-31 22:09:17,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2024-10-31 22:09:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-31 22:09:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-10-31 22:09:17,959 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-10-31 22:09:17,959 INFO L425 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-10-31 22:09:17,960 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:09:17,960 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2024-10-31 22:09:17,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:09:17,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:09:17,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:09:17,964 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:17,964 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:17,965 INFO L745 eck$LassoCheckResult]: Stem: 119#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 120#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 113#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 112#$Ultimate##0 ~x := #in~x; 114#L18 assume !(~x > 100); 110#L21 call #t~ret4 := f91(11 + ~x);< 115#$Ultimate##0 ~x := #in~x; 116#L18 assume ~x > 100;#res := ~x - 10; 123#f91FINAL assume true; 109#f91EXIT >#29#return; 111#L21-1 [2024-10-31 22:09:17,965 INFO L747 eck$LassoCheckResult]: Loop: 111#L21-1 call #t~ret5 := f91(#t~ret4);< 118#$Ultimate##0 ~x := #in~x; 125#L18 assume !(~x > 100); 117#L21 call #t~ret4 := f91(11 + ~x);< 118#$Ultimate##0 ~x := #in~x; 125#L18 assume ~x > 100;#res := ~x - 10; 122#f91FINAL assume true; 124#f91EXIT >#29#return; 111#L21-1 [2024-10-31 22:09:17,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash -218206616, now seen corresponding path program 1 times [2024-10-31 22:09:17,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:17,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624703370] [2024-10-31 22:09:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:17,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:18,013 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:18,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:18,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 1 times [2024-10-31 22:09:18,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:18,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514177340] [2024-10-31 22:09:18,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:18,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:18,030 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:18,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:18,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:18,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1919740023, now seen corresponding path program 1 times [2024-10-31 22:09:18,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:18,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819362705] [2024-10-31 22:09:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:18,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:18,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:18,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:18,287 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:09:18,287 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:09:18,287 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:09:18,287 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:09:18,287 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:09:18,288 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:18,288 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:09:18,288 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:09:18,288 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2024-10-31 22:09:18,288 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:09:18,288 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:09:18,290 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:18,298 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:18,301 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:18,378 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:09:18,378 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:09:18,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:18,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:18,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-31 22:09:18,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:09:18,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:18,420 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:09:18,420 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret5=0} Honda state: {f91_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:09:18,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-31 22:09:18,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:18,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:18,459 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:18,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 22:09:18,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:09:18,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:18,486 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:09:18,486 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:09:18,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-31 22:09:18,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:18,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:18,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 22:09:18,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:09:18,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:18,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-31 22:09:18,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:18,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:18,578 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:18,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 22:09:18,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:09:18,581 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:30,640 INFO L403 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2024-10-31 22:09:30,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:30,648 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:09:30,648 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:09:30,648 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:09:30,648 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:09:30,649 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:09:30,649 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:30,649 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:09:30,649 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:09:30,649 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2024-10-31 22:09:30,649 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:09:30,649 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:09:30,651 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:30,654 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:30,657 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:30,720 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:09:30,720 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:09:30,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:30,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:30,723 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:30,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-31 22:09:30,726 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 [2024-10-31 22:09:30,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:30,741 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:30,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:30,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:30,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:30,742 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:30,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:30,745 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:09:30,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-31 22:09:30,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:30,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:30,767 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:30,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 22:09:30,771 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 [2024-10-31 22:09:30,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:30,786 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:30,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:30,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:30,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:30,787 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:30,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:30,791 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:09:30,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-31 22:09:30,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:30,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:30,813 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:30,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-31 22:09:30,815 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 [2024-10-31 22:09:30,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:30,830 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:30,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:30,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:30,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:30,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:30,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:30,837 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:09:30,842 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:09:30,842 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:09:30,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:30,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:30,845 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:30,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-31 22:09:30,847 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:09:30,847 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:09:30,848 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:09:30,848 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret4) = -2*f91_#t~ret4 + 201 Supporting invariants [] [2024-10-31 22:09:30,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-31 22:09:30,869 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:09:30,875 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret4 [2024-10-31 22:09:30,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:30,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:09:30,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:09:31,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:31,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-31 22:09:31,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-31 22:09:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:31,277 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-31 22:09:31,277 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:09:31,544 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 51 states and 73 transitions. Complement of second has 32 states. [2024-10-31 22:09:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-31 22:09:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:09:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2024-10-31 22:09:31,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2024-10-31 22:09:31,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:31,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2024-10-31 22:09:31,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:31,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2024-10-31 22:09:31,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:31,549 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2024-10-31 22:09:31,553 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2024-10-31 22:09:31,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2024-10-31 22:09:31,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2024-10-31 22:09:31,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2024-10-31 22:09:31,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2024-10-31 22:09:31,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:09:31,564 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 62 transitions. [2024-10-31 22:09:31,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2024-10-31 22:09:31,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2024-10-31 22:09:31,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2024-10-31 22:09:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2024-10-31 22:09:31,573 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 51 transitions. [2024-10-31 22:09:31,573 INFO L425 stractBuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2024-10-31 22:09:31,573 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 22:09:31,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2024-10-31 22:09:31,574 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2024-10-31 22:09:31,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:09:31,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:09:31,575 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:31,575 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:09:31,575 INFO L745 eck$LassoCheckResult]: Stem: 316#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 317#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 311#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 315#$Ultimate##0 ~x := #in~x; 321#L18 assume !(~x > 100); 306#L21 call #t~ret4 := f91(11 + ~x);< 304#$Ultimate##0 ~x := #in~x; 308#L18 assume ~x > 100;#res := ~x - 10; 326#f91FINAL assume true; 325#f91EXIT >#29#return; 296#L21-1 call #t~ret5 := f91(#t~ret4);< 313#$Ultimate##0 ~x := #in~x; 328#L18 assume !(~x > 100); 302#L21 [2024-10-31 22:09:31,575 INFO L747 eck$LassoCheckResult]: Loop: 302#L21 call #t~ret4 := f91(11 + ~x);< 301#$Ultimate##0 ~x := #in~x; 303#L18 assume !(~x > 100); 302#L21 [2024-10-31 22:09:31,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:31,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1987218266, now seen corresponding path program 2 times [2024-10-31 22:09:31,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:31,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278718766] [2024-10-31 22:09:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:31,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:31,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:31,597 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:31,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash 57247, now seen corresponding path program 2 times [2024-10-31 22:09:31,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:31,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950401357] [2024-10-31 22:09:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:31,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:31,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:31,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:31,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:31,607 INFO L85 PathProgramCache]: Analyzing trace with hash -609818202, now seen corresponding path program 3 times [2024-10-31 22:09:31,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:31,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198937889] [2024-10-31 22:09:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:31,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-31 22:09:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:09:31,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198937889] [2024-10-31 22:09:31,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198937889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:31,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:31,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:09:31,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344101303] [2024-10-31 22:09:31,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:31,922 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:09:31,922 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:09:31,923 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:09:31,923 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:09:31,923 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:09:31,923 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:31,923 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:09:31,923 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:09:31,923 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2024-10-31 22:09:31,923 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:09:31,923 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:09:31,925 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:31,934 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:31,937 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:31,940 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:31,977 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:09:31,977 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:09:31,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:31,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:31,980 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:31,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-31 22:09:31,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:09:31,983 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:32,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-31 22:09:32,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:32,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:32,035 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:32,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-31 22:09:32,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:09:32,039 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:44,192 INFO L403 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2024-10-31 22:09:44,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:44,201 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:09:44,201 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:09:44,201 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:09:44,201 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:09:44,201 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:09:44,201 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:44,201 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:09:44,201 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:09:44,201 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2024-10-31 22:09:44,201 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:09:44,201 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:09:44,202 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:44,205 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:44,212 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:44,216 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:44,257 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:09:44,257 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:09:44,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:44,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:44,261 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:44,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-31 22:09:44,263 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 [2024-10-31 22:09:44,273 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:44,274 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:44,274 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:44,274 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:44,274 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:44,275 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:44,275 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:44,276 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:09:44,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-31 22:09:44,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:44,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:44,290 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:44,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-31 22:09:44,292 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 [2024-10-31 22:09:44,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:44,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:44,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:44,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:44,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:44,305 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:44,305 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:44,308 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:09:44,314 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:09:44,314 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:09:44,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:44,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:44,318 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:44,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-31 22:09:44,321 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:09:44,321 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:09:44,322 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:09:44,322 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2024-10-31 22:09:44,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:44,344 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:09:44,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:44,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:09:44,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:44,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:09:44,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:44,526 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-31 22:09:44,527 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:09:44,616 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 43 states and 59 transitions. Complement of second has 13 states. [2024-10-31 22:09:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 22:09:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:09:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2024-10-31 22:09:44,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-31 22:09:44,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:44,618 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:09:44,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:44,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:09:44,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:44,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:09:44,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:44,791 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-31 22:09:44,791 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:09:44,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-10-31 22:09:44,905 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 43 states and 59 transitions. Complement of second has 13 states. [2024-10-31 22:09:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 22:09:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:09:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2024-10-31 22:09:44,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-31 22:09:44,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:44,907 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:09:44,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:44,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:09:44,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:45,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:09:45,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:45,069 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-31 22:09:45,070 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:09:45,181 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 71 states and 100 transitions. Complement of second has 16 states. [2024-10-31 22:09:45,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 22:09:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:09:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2024-10-31 22:09:45,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-31 22:09:45,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:45,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2024-10-31 22:09:45,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:45,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2024-10-31 22:09:45,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:45,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2024-10-31 22:09:45,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-10-31 22:09:45,195 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2024-10-31 22:09:45,195 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2024-10-31 22:09:45,196 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2024-10-31 22:09:45,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2024-10-31 22:09:45,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:09:45,196 INFO L218 hiAutomatonCegarLoop]: Abstraction has 48 states and 74 transitions. [2024-10-31 22:09:45,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2024-10-31 22:09:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2024-10-31 22:09:45,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 11 states have call successors, (18), 9 states have call predecessors, (18), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-31 22:09:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2024-10-31 22:09:45,205 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 60 transitions. [2024-10-31 22:09:45,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:45,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:09:45,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:09:45,210 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:09:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:45,349 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2024-10-31 22:09:45,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2024-10-31 22:09:45,353 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-10-31 22:09:45,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2024-10-31 22:09:45,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2024-10-31 22:09:45,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2024-10-31 22:09:45,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2024-10-31 22:09:45,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:09:45,356 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 75 transitions. [2024-10-31 22:09:45,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2024-10-31 22:09:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-10-31 22:09:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 37 states have internal predecessors, (37), 13 states have call successors, (18), 11 states have call predecessors, (18), 9 states have return successors, (19), 8 states have call predecessors, (19), 11 states have call successors, (19) [2024-10-31 22:09:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-10-31 22:09:45,363 INFO L240 hiAutomatonCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-10-31 22:09:45,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:09:45,365 INFO L425 stractBuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-10-31 22:09:45,365 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 22:09:45,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2024-10-31 22:09:45,366 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-10-31 22:09:45,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:09:45,367 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:09:45,368 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 22:09:45,368 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2024-10-31 22:09:45,369 INFO L745 eck$LassoCheckResult]: Stem: 853#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 854#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 849#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 852#$Ultimate##0 ~x := #in~x; 876#L18 assume !(~x > 100); 869#L21 call #t~ret4 := f91(11 + ~x);< 871#$Ultimate##0 ~x := #in~x; 873#L18 assume !(~x > 100); 868#L21 call #t~ret4 := f91(11 + ~x);< 872#$Ultimate##0 ~x := #in~x; 875#L18 assume ~x > 100;#res := ~x - 10; 874#f91FINAL assume true; 870#f91EXIT >#29#return; 843#L21-1 call #t~ret5 := f91(#t~ret4);< 842#$Ultimate##0 ~x := #in~x; 844#L18 assume ~x > 100;#res := ~x - 10; 861#f91FINAL assume true; 891#f91EXIT >#31#return; 838#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 888#f91FINAL assume true; 887#f91EXIT >#29#return; 836#L21-1 call #t~ret5 := f91(#t~ret4);< 850#$Ultimate##0 [2024-10-31 22:09:45,369 INFO L747 eck$LassoCheckResult]: Loop: 850#$Ultimate##0 ~x := #in~x; 879#L18 assume !(~x > 100); 847#L21 call #t~ret4 := f91(11 + ~x);< 845#$Ultimate##0 ~x := #in~x; 848#L18 assume !(~x > 100); 846#L21 call #t~ret4 := f91(11 + ~x);< 864#$Ultimate##0 ~x := #in~x; 885#L18 assume ~x > 100;#res := ~x - 10; 883#f91FINAL assume true; 881#f91EXIT >#29#return; 857#L21-1 call #t~ret5 := f91(#t~ret4);< 880#$Ultimate##0 ~x := #in~x; 877#L18 assume ~x > 100;#res := ~x - 10; 878#f91FINAL assume true; 889#f91EXIT >#31#return; 838#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 888#f91FINAL assume true; 887#f91EXIT >#29#return; 837#L21-1 call #t~ret5 := f91(#t~ret4);< 850#$Ultimate##0 [2024-10-31 22:09:45,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:45,369 INFO L85 PathProgramCache]: Analyzing trace with hash -834951989, now seen corresponding path program 1 times [2024-10-31 22:09:45,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:45,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110176742] [2024-10-31 22:09:45,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:45,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:45,382 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:45,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:45,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:45,393 INFO L85 PathProgramCache]: Analyzing trace with hash -871747263, now seen corresponding path program 1 times [2024-10-31 22:09:45,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:45,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917029524] [2024-10-31 22:09:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:45,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:45,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:45,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:45,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash 418853943, now seen corresponding path program 2 times [2024-10-31 22:09:45,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:45,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171763428] [2024-10-31 22:09:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:45,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:45,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-31 22:09:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:45,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:09:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:45,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 22:09:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:45,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:09:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:45,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:09:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:45,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 22:09:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-31 22:09:45,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:45,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171763428] [2024-10-31 22:09:45,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171763428] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:45,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537218661] [2024-10-31 22:09:45,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:09:45,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:45,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:45,822 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:45,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-31 22:09:45,878 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:09:45,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:45,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:09:45,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-31 22:09:45,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-31 22:09:46,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537218661] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:46,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:46,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2024-10-31 22:09:46,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143376313] [2024-10-31 22:09:46,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:46,508 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:09:46,508 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:09:46,508 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:09:46,509 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:09:46,509 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:09:46,509 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:46,509 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:09:46,509 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:09:46,509 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2024-10-31 22:09:46,509 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:09:46,509 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:09:46,510 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:46,518 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:46,521 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:46,524 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:46,527 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:46,563 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:09:46,563 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:09:46,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:46,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:46,566 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:46,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-31 22:09:46,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:09:46,569 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:46,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:46,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:46,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:46,621 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:46,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-31 22:09:46,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:09:46,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:46,638 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:09:46,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:46,657 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:09:46,657 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:09:46,657 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:09:46,657 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:09:46,657 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:09:46,658 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:46,658 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:09:46,658 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:09:46,658 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2024-10-31 22:09:46,658 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:09:46,658 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:09:46,659 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:46,668 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:46,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:46,675 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:46,677 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:46,749 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:09:46,749 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:09:46,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:46,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:46,752 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:46,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-31 22:09:46,754 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 [2024-10-31 22:09:46,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:46,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:46,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:46,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:46,768 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:46,769 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:46,769 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:46,771 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:09:46,774 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:09:46,774 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:09:46,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:46,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:46,775 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:46,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-31 22:09:46,777 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:09:46,777 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:09:46,777 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:09:46,777 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2024-10-31 22:09:46,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:46,792 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:09:46,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:46,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:09:46,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:47,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-31 22:09:47,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 22:09:47,441 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2024-10-31 22:09:47,441 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 22:09:47,970 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Result 125 states and 150 transitions. Complement of second has 49 states. [2024-10-31 22:09:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 15 states 2 stem states 12 non-accepting loop states 1 accepting loop states [2024-10-31 22:09:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 22:09:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 35 transitions. [2024-10-31 22:09:47,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 35 transitions. Stem has 22 letters. Loop has 19 letters. [2024-10-31 22:09:47,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:47,973 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:09:47,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:48,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:09:48,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:48,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 22:09:48,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:48,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-10-31 22:09:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:09:48,523 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 9 loop predicates [2024-10-31 22:09:48,524 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-31 22:09:48,916 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Result 125 states and 150 transitions. Complement of second has 39 states. [2024-10-31 22:09:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-10-31 22:09:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-31 22:09:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 35 transitions. [2024-10-31 22:09:48,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 35 transitions. Stem has 22 letters. Loop has 19 letters. [2024-10-31 22:09:48,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:48,918 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:09:48,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:09:49,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 22:09:49,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:49,444 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:09:49,445 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2024-10-31 22:09:49,445 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-31 22:09:50,188 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Result 325 states and 417 transitions. Complement of second has 131 states. [2024-10-31 22:09:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 19 states 2 stem states 16 non-accepting loop states 1 accepting loop states [2024-10-31 22:09:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-31 22:09:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 50 transitions. [2024-10-31 22:09:50,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 19 states and 50 transitions. Stem has 22 letters. Loop has 19 letters. [2024-10-31 22:09:50,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:50,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 19 states and 50 transitions. Stem has 41 letters. Loop has 19 letters. [2024-10-31 22:09:50,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:50,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 19 states and 50 transitions. Stem has 22 letters. Loop has 38 letters. [2024-10-31 22:09:50,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:50,193 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 325 states and 417 transitions. [2024-10-31 22:09:50,200 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2024-10-31 22:09:50,204 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 325 states to 169 states and 230 transitions. [2024-10-31 22:09:50,204 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 81 [2024-10-31 22:09:50,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2024-10-31 22:09:50,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 230 transitions. [2024-10-31 22:09:50,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:09:50,205 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 230 transitions. [2024-10-31 22:09:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 230 transitions. [2024-10-31 22:09:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2024-10-31 22:09:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 86 states have (on average 1.0813953488372092) internal successors, (93), 88 states have internal predecessors, (93), 32 states have call successors, (42), 26 states have call predecessors, (42), 22 states have return successors, (43), 25 states have call predecessors, (43), 28 states have call successors, (43) [2024-10-31 22:09:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 178 transitions. [2024-10-31 22:09:50,222 INFO L240 hiAutomatonCegarLoop]: Abstraction has 140 states and 178 transitions. [2024-10-31 22:09:50,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:50,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-31 22:09:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:09:50,224 INFO L87 Difference]: Start difference. First operand 140 states and 178 transitions. Second operand has 17 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 10 states have internal predecessors, (24), 8 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-31 22:09:50,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:50,475 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2024-10-31 22:09:50,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 163 transitions. [2024-10-31 22:09:50,478 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:09:50,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 101 states and 121 transitions. [2024-10-31 22:09:50,480 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2024-10-31 22:09:50,481 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2024-10-31 22:09:50,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 121 transitions. [2024-10-31 22:09:50,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:09:50,481 INFO L218 hiAutomatonCegarLoop]: Abstraction has 101 states and 121 transitions. [2024-10-31 22:09:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 121 transitions. [2024-10-31 22:09:50,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-10-31 22:09:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 60 states have (on average 1.05) internal successors, (63), 61 states have internal predecessors, (63), 22 states have call successors, (29), 19 states have call predecessors, (29), 15 states have return successors, (25), 16 states have call predecessors, (25), 18 states have call successors, (25) [2024-10-31 22:09:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2024-10-31 22:09:50,490 INFO L240 hiAutomatonCegarLoop]: Abstraction has 97 states and 117 transitions. [2024-10-31 22:09:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:09:50,491 INFO L425 stractBuchiCegarLoop]: Abstraction has 97 states and 117 transitions. [2024-10-31 22:09:50,491 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-31 22:09:50,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 117 transitions. [2024-10-31 22:09:50,492 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:09:50,492 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:09:50,492 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:09:50,494 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-10-31 22:09:50,494 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:50,494 INFO L745 eck$LassoCheckResult]: Stem: 2781#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 2782#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 2779#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 2780#$Ultimate##0 ~x := #in~x; 2793#L18 assume !(~x > 100); 2794#L21 call #t~ret4 := f91(11 + ~x);< 2798#$Ultimate##0 ~x := #in~x; 2811#L18 assume !(~x > 100); 2805#L21 call #t~ret4 := f91(11 + ~x);< 2809#$Ultimate##0 ~x := #in~x; 2812#L18 assume ~x > 100;#res := ~x - 10; 2810#f91FINAL assume true; 2808#f91EXIT >#29#return; 2804#L21-1 call #t~ret5 := f91(#t~ret4);< 2807#$Ultimate##0 ~x := #in~x; 2837#L18 assume ~x > 100;#res := ~x - 10; 2825#f91FINAL assume true; 2824#f91EXIT >#31#return; 2822#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 2821#f91FINAL assume true; 2820#f91EXIT >#29#return; 2813#L21-1 call #t~ret5 := f91(#t~ret4);< 2819#$Ultimate##0 ~x := #in~x; 2817#L18 assume !(~x > 100); 2774#L21 call #t~ret4 := f91(11 + ~x);< 2815#$Ultimate##0 ~x := #in~x; 2831#L18 assume ~x > 100;#res := ~x - 10; 2830#f91FINAL assume true; 2829#f91EXIT >#29#return; 2796#L21-1 call #t~ret5 := f91(#t~ret4);< 2828#$Ultimate##0 ~x := #in~x; 2841#L18 assume !(~x > 100); 2795#L21 call #t~ret4 := f91(11 + ~x);< 2797#$Ultimate##0 ~x := #in~x; 2855#L18 assume ~x > 100;#res := ~x - 10; 2854#f91FINAL assume true; 2846#f91EXIT >#29#return; 2786#L21-1 call #t~ret5 := f91(#t~ret4);< 2845#$Ultimate##0 [2024-10-31 22:09:50,494 INFO L747 eck$LassoCheckResult]: Loop: 2845#$Ultimate##0 ~x := #in~x; 2850#L18 assume !(~x > 100); 2848#L21 call #t~ret4 := f91(11 + ~x);< 2797#$Ultimate##0 ~x := #in~x; 2855#L18 assume ~x > 100;#res := ~x - 10; 2854#f91FINAL assume true; 2846#f91EXIT >#29#return; 2785#L21-1 call #t~ret5 := f91(#t~ret4);< 2845#$Ultimate##0 [2024-10-31 22:09:50,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:50,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1139827145, now seen corresponding path program 3 times [2024-10-31 22:09:50,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:50,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075977435] [2024-10-31 22:09:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:50,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:50,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:50,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:50,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:50,529 INFO L85 PathProgramCache]: Analyzing trace with hash 31195136, now seen corresponding path program 2 times [2024-10-31 22:09:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:50,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807673343] [2024-10-31 22:09:50,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:50,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:50,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:50,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:50,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:50,546 INFO L85 PathProgramCache]: Analyzing trace with hash 424810952, now seen corresponding path program 4 times [2024-10-31 22:09:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:50,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753598335] [2024-10-31 22:09:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:50,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:50,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:50,578 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:50,675 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:09:50,675 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:09:50,675 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:09:50,675 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:09:50,675 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:09:50,676 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:50,676 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:09:50,676 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:09:50,676 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2024-10-31 22:09:50,676 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:09:50,676 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:09:50,677 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:50,682 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:50,684 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:50,692 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:50,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:50,729 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:09:50,730 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:09:50,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:50,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:50,732 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:50,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-31 22:09:50,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:09:50,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:50,752 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:09:50,753 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret4=0} Honda state: {f91_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:09:50,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-10-31 22:09:50,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:50,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:50,774 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:50,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-31 22:09:50,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:09:50,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:50,794 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:09:50,794 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:09:50,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:50,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:50,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:50,815 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:50,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-31 22:09:50,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:09:50,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:50,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:50,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:50,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:50,856 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:50,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-31 22:09:50,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:09:50,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:09:50,878 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:09:50,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-10-31 22:09:50,897 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:09:50,897 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:09:50,897 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:09:50,897 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:09:50,897 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:09:50,897 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:50,898 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:09:50,898 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:09:50,898 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2024-10-31 22:09:50,898 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:09:50,898 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:09:50,899 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:50,901 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:50,903 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:50,905 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:50,912 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:09:50,944 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:09:50,944 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:09:50,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:50,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:50,948 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:50,953 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 [2024-10-31 22:09:50,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-31 22:09:50,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:50,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:50,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:50,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:50,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:50,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:50,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:50,972 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:09:50,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-10-31 22:09:50,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:50,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:50,993 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:50,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-31 22:09:50,996 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 [2024-10-31 22:09:51,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:51,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:51,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:51,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:51,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:51,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:51,011 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:51,015 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:09:51,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:51,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:51,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:51,034 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:51,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-31 22:09:51,037 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 [2024-10-31 22:09:51,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:51,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:51,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:51,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:51,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:51,066 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:51,066 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:51,068 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:09:51,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:51,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:51,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:51,091 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:51,093 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 [2024-10-31 22:09:51,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-10-31 22:09:51,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:09:51,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:09:51,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:09:51,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:09:51,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:09:51,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:09:51,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:09:51,112 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:09:51,117 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:09:51,117 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:09:51,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:09:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:51,119 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:51,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-10-31 22:09:51,121 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:09:51,122 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:09:51,122 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:09:51,122 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 201 Supporting invariants [] [2024-10-31 22:09:51,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:51,143 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:09:51,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 22:09:51,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:09:51,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:51,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b15a188-f723-4dda-abee-f9591a7d8b6f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:51,648 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-31 22:09:51,649 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-31 22:09:51,780 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Result 107 states and 127 transitions. Complement of second has 16 states. [2024-10-31 22:09:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 22:09:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-31 22:09:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 15 transitions. [2024-10-31 22:09:51,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 15 transitions. Stem has 38 letters. Loop has 8 letters. [2024-10-31 22:09:51,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:51,784 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:09:51,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 22:09:51,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:52,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:09:52,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:52,254 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-31 22:09:52,254 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-31 22:09:52,499 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Result 125 states and 146 transitions. Complement of second has 28 states. [2024-10-31 22:09:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-10-31 22:09:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-31 22:09:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 20 transitions. [2024-10-31 22:09:52,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 20 transitions. Stem has 38 letters. Loop has 8 letters. [2024-10-31 22:09:52,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:09:52,502 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:09:52,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:52,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 22:09:52,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:52,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:09:52,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:53,004 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-31 22:09:53,004 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)