./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme --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 ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:21,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:21,991 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-26 11:45:22,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:22,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:22,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:22,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:22,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:22,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:22,042 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:22,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:22,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:22,045 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:22,045 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 11:45:22,046 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 11:45:22,047 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 11:45:22,047 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 11:45:22,052 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 11:45:22,052 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 11:45:22,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:22,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 11:45:22,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:22,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:22,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:22,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:22,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 11:45:22,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 11:45:22,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 11:45:22,059 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:45:22,059 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:22,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:22,061 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 11:45:22,062 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:22,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:22,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:22,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:22,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:22,064 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 11:45:22,064 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_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 [2023-11-26 11:45:22,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:22,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:22,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:22,427 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:22,428 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:22,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/loop-invgen/nest-if3.i [2023-11-26 11:45:25,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:25,973 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:25,973 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/sv-benchmarks/c/loop-invgen/nest-if3.i [2023-11-26 11:45:25,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/data/ccd53205c/de094f2f4bdf4e038d1ff583457a26e7/FLAG13a189543 [2023-11-26 11:45:25,999 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/data/ccd53205c/de094f2f4bdf4e038d1ff583457a26e7 [2023-11-26 11:45:26,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:26,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:26,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:26,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:26,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:26,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3996bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26, skipping insertion in model container [2023-11-26 11:45:26,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,055 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:26,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:26,238 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:26,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:26,280 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:26,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26 WrapperNode [2023-11-26 11:45:26,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:26,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:26,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:26,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:26,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,320 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-26 11:45:26,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:26,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:26,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:26,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:26,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,332 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,344 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]. [2023-11-26 11:45:26,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:26,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:26,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:26,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:26,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (1/1) ... [2023-11-26 11:45:26,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:26,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:26,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:26,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:26,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:26,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:26,502 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:26,505 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:26,637 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:26,647 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:26,647 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:45:26,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:26 BoogieIcfgContainer [2023-11-26 11:45:26,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:26,651 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 11:45:26,651 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 11:45:26,655 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 11:45:26,656 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:45:26,656 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 11:45:26" (1/3) ... [2023-11-26 11:45:26,657 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3651fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:45:26, skipping insertion in model container [2023-11-26 11:45:26,658 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:45:26,658 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:26" (2/3) ... [2023-11-26 11:45:26,658 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3651fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:45:26, skipping insertion in model container [2023-11-26 11:45:26,659 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:45:26,659 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:26" (3/3) ... [2023-11-26 11:45:26,660 INFO L332 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2023-11-26 11:45:26,743 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 11:45:26,744 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 11:45:26,744 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 11:45:26,745 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 11:45:26,746 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 11:45:26,746 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 11:45:26,746 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 11:45:26,746 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 11:45:26,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:26,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-26 11:45:26,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:45:26,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:45:26,788 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:26,788 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:26,789 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 11:45:26,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:26,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-26 11:45:26,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:45:26,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:45:26,793 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:26,793 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:26,802 INFO L748 eck$LassoCheckResult]: Stem: 13#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 12#L28true assume !!(main_~l~0#1 > 0); 5#L29true assume !!(main_~l~0#1 < 1000000); 4#L30true assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 7#L31-3true [2023-11-26 11:45:26,803 INFO L750 eck$LassoCheckResult]: Loop: 7#L31-3true assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 11#L32-3true assume !true; 17#L32-4true havoc main_#t~nondet5#1; 19#L35true assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~l~0#1 := 1 + main_~l~0#1; 15#L31-2true main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 7#L31-3true [2023-11-26 11:45:26,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2023-11-26 11:45:26,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:26,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806555868] [2023-11-26 11:45:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:26,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:26,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:45:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:26,984 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:45:26,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash 53381598, now seen corresponding path program 1 times [2023-11-26 11:45:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:26,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288259284] [2023-11-26 11:45:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:26,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:27,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:27,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288259284] [2023-11-26 11:45:27,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288259284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:27,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:27,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:27,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017673812] [2023-11-26 11:45:27,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:27,046 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 11:45:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:27,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:45:27,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:27,083 INFO L87 Difference]: Start difference. First operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:27,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:27,090 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2023-11-26 11:45:27,092 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2023-11-26 11:45:27,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 11:45:27,097 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 13 states and 15 transitions. [2023-11-26 11:45:27,098 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2023-11-26 11:45:27,098 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-11-26 11:45:27,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2023-11-26 11:45:27,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:27,099 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-26 11:45:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2023-11-26 11:45:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-26 11:45:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-11-26 11:45:27,128 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-26 11:45:27,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:45:27,133 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-26 11:45:27,133 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 11:45:27,134 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2023-11-26 11:45:27,134 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 11:45:27,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:45:27,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:45:27,135 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:27,135 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:27,136 INFO L748 eck$LassoCheckResult]: Stem: 55#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 48#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 49#L28 assume !!(main_~l~0#1 > 0); 47#L29 assume !!(main_~l~0#1 < 1000000); 45#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 46#L31-3 [2023-11-26 11:45:27,136 INFO L750 eck$LassoCheckResult]: Loop: 46#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 50#L32-3 assume !(main_~i~0#1 < main_~n~0#1); 54#L32-4 havoc main_#t~nondet5#1; 57#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~l~0#1 := 1 + main_~l~0#1; 56#L31-2 main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 46#L31-3 [2023-11-26 11:45:27,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 2 times [2023-11-26 11:45:27,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:27,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952574535] [2023-11-26 11:45:27,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:27,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:27,147 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:45:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:27,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:45:27,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:27,158 INFO L85 PathProgramCache]: Analyzing trace with hash 52696405, now seen corresponding path program 1 times [2023-11-26 11:45:27,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:27,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520366262] [2023-11-26 11:45:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:27,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:27,170 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:45:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:27,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:45:27,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash 768749869, now seen corresponding path program 1 times [2023-11-26 11:45:27,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:27,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618668444] [2023-11-26 11:45:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:27,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:27,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:45:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:27,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:45:27,378 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:45:27,379 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:45:27,379 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:45:27,379 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:45:27,380 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:45:27,380 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:27,380 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:45:27,380 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:45:27,380 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2023-11-26 11:45:27,380 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:45:27,381 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:45:27,398 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:27,407 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:27,411 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:27,485 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:45:27,486 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:45:27,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:27,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:27,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:27,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:45:27,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:45:27,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-26 11:45:27,539 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:45:27,539 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=0} Honda state: {ULTIMATE.start_main_#t~nondet5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:45:27,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:27,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:27,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:27,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:27,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:45:27,562 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:45:27,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-26 11:45:27,581 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:45:27,581 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:45:27,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:27,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:27,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:27,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:27,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-26 11:45:27,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:45:27,609 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:45:27,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:27,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:27,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:27,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:27,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:45:27,657 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:45:27,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-26 11:45:27,997 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:45:28,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:28,002 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:45:28,002 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:45:28,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:45:28,003 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:45:28,003 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:45:28,003 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,003 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:45:28,003 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:45:28,003 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2023-11-26 11:45:28,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:45:28,004 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:45:28,005 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,012 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,083 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:45:28,088 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:45:28,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,092 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 11:45:28,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:45:28,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:45:28,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:45:28,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:45:28,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:45:28,122 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:45:28,122 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:45:28,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-26 11:45:28,140 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:45:28,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:28,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,152 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-26 11:45:28,164 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 11:45:28,177 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:45:28,177 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:45:28,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:45:28,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:45:28,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:45:28,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:45:28,179 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:45:28,188 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:45:28,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:28,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,214 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 11:45:28,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:45:28,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:45:28,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:45:28,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:45:28,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:45:28,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-26 11:45:28,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:45:28,232 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:45:28,244 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:45:28,276 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-26 11:45:28,276 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:45:28,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,304 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-26 11:45:28,312 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:45:28,312 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:45:28,312 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:45:28,313 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2023-11-26 11:45:28,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:28,322 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:45:28,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:28,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:28,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:28,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:28,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:28,456 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-26 11:45:28,457 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:28,504 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 28 transitions. Complement of second has 4 states. [2023-11-26 11:45:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-26 11:45:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2023-11-26 11:45:28,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 5 letters. Loop has 5 letters. [2023-11-26 11:45:28,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:28,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 5 letters. [2023-11-26 11:45:28,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:28,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 5 letters. Loop has 10 letters. [2023-11-26 11:45:28,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:28,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 28 transitions. [2023-11-26 11:45:28,511 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 11:45:28,512 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 19 states and 23 transitions. [2023-11-26 11:45:28,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-26 11:45:28,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-26 11:45:28,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2023-11-26 11:45:28,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:45:28,513 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-11-26 11:45:28,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2023-11-26 11:45:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-11-26 11:45:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:28,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-11-26 11:45:28,515 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-11-26 11:45:28,515 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-11-26 11:45:28,515 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-26 11:45:28,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2023-11-26 11:45:28,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 11:45:28,516 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:45:28,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:45:28,517 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:45:28,517 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 11:45:28,517 INFO L748 eck$LassoCheckResult]: Stem: 144#$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(9, 2); 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 133#L28 assume !!(main_~l~0#1 > 0); 131#L29 assume !!(main_~l~0#1 < 1000000); 129#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 130#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 134#L32-3 [2023-11-26 11:45:28,517 INFO L750 eck$LassoCheckResult]: Loop: 134#L32-3 assume !!(main_~i~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 139#L18 assume !(0 == __VERIFIER_assert_~cond#1); 140#L18-2 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 137#L32-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 134#L32-3 [2023-11-26 11:45:28,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:28,518 INFO L85 PathProgramCache]: Analyzing trace with hash 889571344, now seen corresponding path program 1 times [2023-11-26 11:45:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:28,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915756811] [2023-11-26 11:45:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:28,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:28,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:45:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:28,536 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:45:28,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1953393, now seen corresponding path program 1 times [2023-11-26 11:45:28,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:28,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969652235] [2023-11-26 11:45:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:28,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:28,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:45:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:28,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:45:28,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:28,552 INFO L85 PathProgramCache]: Analyzing trace with hash 768800512, now seen corresponding path program 1 times [2023-11-26 11:45:28,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:28,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825689172] [2023-11-26 11:45:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:28,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:28,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:45:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:28,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:45:28,611 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:45:28,612 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:45:28,612 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:45:28,612 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:45:28,612 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:45:28,612 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,612 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:45:28,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:45:28,612 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2023-11-26 11:45:28,612 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:45:28,613 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:45:28,614 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,624 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,626 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,629 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,659 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:45:28,660 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:45:28,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,661 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:45:28,673 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:45:28,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-26 11:45:28,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:28,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,706 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:45:28,718 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:45:28,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-26 11:45:28,779 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:45:28,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:28,790 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:45:28,790 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:45:28,790 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:45:28,790 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:45:28,790 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:45:28,790 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,790 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:45:28,790 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:45:28,790 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2023-11-26 11:45:28,790 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:45:28,791 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:45:28,792 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,803 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,806 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:28,859 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:45:28,859 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:45:28,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,864 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 11:45:28,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:45:28,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:45:28,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:45:28,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:45:28,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:45:28,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-26 11:45:28,884 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:45:28,884 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:45:28,894 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:45:28,899 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-26 11:45:28,899 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:45:28,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:28,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,903 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,905 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:45:28,905 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:45:28,905 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:45:28,905 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2023-11-26 11:45:28,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-26 11:45:28,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:28,911 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:45:28,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:28,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:28,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:28,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:28,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:28,987 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-26 11:45:28,987 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:29,015 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 50 transitions. Complement of second has 7 states. [2023-11-26 11:45:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:45:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:29,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-26 11:45:29,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-26 11:45:29,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:29,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 4 letters. [2023-11-26 11:45:29,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:29,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 8 letters. [2023-11-26 11:45:29,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:29,018 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 50 transitions. [2023-11-26 11:45:29,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 11:45:29,022 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 26 states and 32 transitions. [2023-11-26 11:45:29,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-26 11:45:29,023 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-26 11:45:29,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 32 transitions. [2023-11-26 11:45:29,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:45:29,023 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-11-26 11:45:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 32 transitions. [2023-11-26 11:45:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2023-11-26 11:45:29,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-11-26 11:45:29,026 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-11-26 11:45:29,026 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-11-26 11:45:29,026 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-26 11:45:29,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2023-11-26 11:45:29,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 11:45:29,027 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:45:29,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:45:29,028 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:29,028 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 11:45:29,028 INFO L748 eck$LassoCheckResult]: Stem: 256#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 244#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 245#L28 assume !!(main_~l~0#1 > 0); 243#L29 assume !!(main_~l~0#1 < 1000000); 241#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 242#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 246#L32-3 assume !(main_~i~0#1 < main_~n~0#1); 255#L32-4 havoc main_#t~nondet5#1; 258#L35 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1; 257#L31-2 main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 247#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 248#L32-3 [2023-11-26 11:45:29,029 INFO L750 eck$LassoCheckResult]: Loop: 248#L32-3 assume !!(main_~i~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 251#L18 assume !(0 == __VERIFIER_assert_~cond#1); 252#L18-2 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 249#L32-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 248#L32-3 [2023-11-26 11:45:29,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1938555890, now seen corresponding path program 1 times [2023-11-26 11:45:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:29,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820198173] [2023-11-26 11:45:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:29,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:29,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:45:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:29,049 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:45:29,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:29,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1953393, now seen corresponding path program 2 times [2023-11-26 11:45:29,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:29,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354094324] [2023-11-26 11:45:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:29,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:29,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:45:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:29,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:45:29,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash -85263362, now seen corresponding path program 1 times [2023-11-26 11:45:29,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:29,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632696995] [2023-11-26 11:45:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:29,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632696995] [2023-11-26 11:45:29,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632696995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200796245] [2023-11-26 11:45:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:29,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:29,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,205 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:45:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:29,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:29,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200796245] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:29,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:29,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-11-26 11:45:29,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982251611] [2023-11-26 11:45:29,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:29,346 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:45:29,347 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:45:29,347 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:45:29,347 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:45:29,347 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:45:29,347 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,347 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:45:29,347 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:45:29,348 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2023-11-26 11:45:29,348 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:45:29,348 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:45:29,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:29,351 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:29,354 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:29,362 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:29,392 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:45:29,393 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:45:29,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,399 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-26 11:45:29,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:45:29,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:45:29,431 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:45:29,431 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_#in~cond#1=0} Honda state: {ULTIMATE.start___VERIFIER_assert_#in~cond#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:45:29,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:29,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,442 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:45:29,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:45:29,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-26 11:45:29,469 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:45:29,469 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=0} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:45:29,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:29,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,480 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:45:29,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:45:29,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-26 11:45:29,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:29,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,521 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:45:29,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:45:29,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-26 11:45:29,594 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:45:29,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:29,604 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:45:29,604 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:45:29,604 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:45:29,604 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:45:29,605 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:45:29,605 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,605 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:45:29,605 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:45:29,605 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2023-11-26 11:45:29,605 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:45:29,605 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:45:29,606 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:29,609 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:29,612 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:29,615 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:45:29,658 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:45:29,658 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:45:29,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,660 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,665 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 11:45:29,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:45:29,677 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:45:29,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:45:29,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:45:29,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:45:29,680 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:45:29,681 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:45:29,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-26 11:45:29,695 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:45:29,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:29,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,706 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,715 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 11:45:29,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-26 11:45:29,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:45:29,728 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:45:29,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:45:29,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:45:29,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:45:29,730 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:45:29,730 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:45:29,744 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:45:29,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:29,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,749 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,761 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 11:45:29,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-26 11:45:29,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:45:29,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:45:29,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:45:29,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:45:29,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:45:29,773 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:45:29,773 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:45:29,782 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:45:29,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:29,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,789 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,798 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 11:45:29,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-26 11:45:29,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:45:29,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:45:29,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:45:29,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:45:29,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:45:29,811 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:45:29,811 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:45:29,822 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:45:29,826 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 11:45:29,826 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:45:29,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:45:29,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,831 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,837 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:45:29,837 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:45:29,837 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:45:29,837 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2023-11-26 11:45:29,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-26 11:45:29,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:29,847 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:45:29,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:29,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:29,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:29,934 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-26 11:45:29,935 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:29,961 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 40 transitions. Complement of second has 7 states. [2023-11-26 11:45:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:45:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-26 11:45:29,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-26 11:45:29,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:29,964 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 11:45:29,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:30,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:30,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:30,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:30,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:30,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:30,085 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-26 11:45:30,085 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:30,108 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 40 transitions. Complement of second has 7 states. [2023-11-26 11:45:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:45:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-26 11:45:30,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-26 11:45:30,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:30,111 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 11:45:30,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:30,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:30,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:30,184 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-26 11:45:30,184 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:30,209 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 34 transitions. Complement of second has 6 states. [2023-11-26 11:45:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:45:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2023-11-26 11:45:30,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-26 11:45:30,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:30,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 15 letters. Loop has 4 letters. [2023-11-26 11:45:30,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:30,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-26 11:45:30,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:45:30,213 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 34 transitions. [2023-11-26 11:45:30,214 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 11:45:30,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 0 states and 0 transitions. [2023-11-26 11:45:30,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-26 11:45:30,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-26 11:45:30,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-26 11:45:30,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:30,214 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:45:30,214 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:45:30,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:30,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:30,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:30,215 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:30,216 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-26 11:45:30,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-26 11:45:30,216 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 11:45:30,216 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 11:45:30,216 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-26 11:45:30,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-26 11:45:30,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-26 11:45:30,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:30,216 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:45:30,217 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:45:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:45:30,217 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:45:30,217 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-26 11:45:30,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:45:30,218 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 11:45:30,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-26 11:45:30,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 11:45:30 BoogieIcfgContainer [2023-11-26 11:45:30,226 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 11:45:30,226 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:45:30,226 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:45:30,227 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:45:30,227 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:26" (3/4) ... [2023-11-26 11:45:30,229 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:45:30,230 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:45:30,231 INFO L158 Benchmark]: Toolchain (without parser) took 4219.49ms. Allocated memory is still 159.4MB. Free memory was 127.8MB in the beginning and 111.4MB in the end (delta: 16.4MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,231 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:45:30,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.48ms. Allocated memory is still 159.4MB. Free memory was 127.8MB in the beginning and 117.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.67ms. Allocated memory is still 159.4MB. Free memory was 117.4MB in the beginning and 116.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,233 INFO L158 Benchmark]: Boogie Preprocessor took 32.60ms. Allocated memory is still 159.4MB. Free memory was 115.7MB in the beginning and 114.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,233 INFO L158 Benchmark]: RCFGBuilder took 293.99ms. Allocated memory is still 159.4MB. Free memory was 114.1MB in the beginning and 104.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,233 INFO L158 Benchmark]: BuchiAutomizer took 3575.21ms. Allocated memory is still 159.4MB. Free memory was 104.0MB in the beginning and 112.4MB in the end (delta: -8.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:45:30,234 INFO L158 Benchmark]: Witness Printer took 4.09ms. Allocated memory is still 159.4MB. Free memory was 112.4MB in the beginning and 111.4MB in the end (delta: 979.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:45:30,236 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.48ms. Allocated memory is still 159.4MB. Free memory was 127.8MB in the beginning and 117.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.67ms. Allocated memory is still 159.4MB. Free memory was 117.4MB in the beginning and 116.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.60ms. Allocated memory is still 159.4MB. Free memory was 115.7MB in the beginning and 114.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.99ms. Allocated memory is still 159.4MB. Free memory was 114.1MB in the beginning and 104.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3575.21ms. Allocated memory is still 159.4MB. Free memory was 104.0MB in the beginning and 112.4MB in the end (delta: -8.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.09ms. Allocated memory is still 159.4MB. Free memory was 112.4MB in the beginning and 111.4MB in the end (delta: 979.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (n + (-1 * k)) and consists of 3 locations. One deterministic module has affine ranking function ((-1 * i) + n) and consists of 4 locations. One nondeterministic module has affine ranking function ((-1 * i) + n) and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 91 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq149 hnf94 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 51ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-26 11:45:30,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:30,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d80d20-f952-4065-82d4-67bcfb36f726/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE