./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex07.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e1ac7230c5e382093d26c98e7b6016147f69412c389a30284fe416f8f9568f8d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:17:44,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:17:44,231 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-28 02:17:44,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:17:44,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:17:44,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:17:44,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:17:44,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:17:44,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:17:44,276 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:17:44,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:17:44,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:17:44,278 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:17:44,278 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-28 02:17:44,279 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-28 02:17:44,279 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-28 02:17:44,280 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-28 02:17:44,280 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-28 02:17:44,280 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-28 02:17:44,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:17:44,280 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-28 02:17:44,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:17:44,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:17:44,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-28 02:17:44,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-28 02:17:44,281 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-28 02:17:44,282 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:17:44,282 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:17:44,282 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-28 02:17:44,282 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:17:44,282 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:17:44,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:17:44,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:17:44,284 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:17:44,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-28 02:17:44,284 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-28 02:17:44,284 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1ac7230c5e382093d26c98e7b6016147f69412c389a30284fe416f8f9568f8d [2024-11-28 02:17:44,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:17:44,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:17:44,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:17:44,639 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:17:44,640 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:17:44,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-restricted-15/Ex07.c [2024-11-28 02:17:48,187 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/data/af2177ba5/1ae7442c10b74d1a82e9c1cd43de1cb1/FLAG11ddda908 [2024-11-28 02:17:48,464 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:17:48,465 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/sv-benchmarks/c/termination-restricted-15/Ex07.c [2024-11-28 02:17:48,476 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/data/af2177ba5/1ae7442c10b74d1a82e9c1cd43de1cb1/FLAG11ddda908 [2024-11-28 02:17:48,757 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/data/af2177ba5/1ae7442c10b74d1a82e9c1cd43de1cb1 [2024-11-28 02:17:48,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:17:48,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:17:48,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:17:48,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:17:48,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:17:48,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:48,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1e6b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48, skipping insertion in model container [2024-11-28 02:17:48,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:48,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:17:48,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:17:48,952 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:17:48,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:17:48,984 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:17:48,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48 WrapperNode [2024-11-28 02:17:48,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:17:48,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:17:48,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:17:48,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:17:49,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,027 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2024-11-28 02:17:49,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:17:49,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:17:49,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:17:49,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:17:49,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,051 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-28 02:17:49,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,053 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:17:49,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:17:49,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:17:49,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:17:49,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (1/1) ... [2024-11-28 02:17:49,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:49,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:49,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:49,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-28 02:17:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:17:49,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:17:49,253 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:17:49,255 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:17:49,333 INFO L? ?]: Removed 2 outVars from TransFormulas that were not future-live. [2024-11-28 02:17:49,333 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:17:49,343 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:17:49,344 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:17:49,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:17:49 BoogieIcfgContainer [2024-11-28 02:17:49,344 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:17:49,345 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-28 02:17:49,345 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-28 02:17:49,353 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-28 02:17:49,354 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 02:17:49,355 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:17:48" (1/3) ... [2024-11-28 02:17:49,356 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e0f11c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:17:49, skipping insertion in model container [2024-11-28 02:17:49,356 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 02:17:49,356 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:17:48" (2/3) ... [2024-11-28 02:17:49,357 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e0f11c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:17:49, skipping insertion in model container [2024-11-28 02:17:49,357 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 02:17:49,357 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:17:49" (3/3) ... [2024-11-28 02:17:49,358 INFO L363 chiAutomizerObserver]: Analyzing ICFG Ex07.c [2024-11-28 02:17:49,451 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-28 02:17:49,451 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-28 02:17:49,451 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-28 02:17:49,451 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-28 02:17:49,451 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-28 02:17:49,451 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-28 02:17:49,452 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-28 02:17:49,452 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-28 02:17:49,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2024-11-28 02:17:49,479 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 02:17:49,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:17:49,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:17:49,486 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 02:17:49,486 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 02:17:49,487 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-28 02:17:49,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2024-11-28 02:17:49,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 02:17:49,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:17:49,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:17:49,490 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 02:17:49,490 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 02:17:49,499 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" [2024-11-28 02:17:49,499 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 > 0;main_~i~0#1 := main_~i~0#1 - 1;" "assume main_~i~0#1 < 0;main_~i~0#1 := 1 + main_~i~0#1;" [2024-11-28 02:17:49,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:49,505 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-28 02:17:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:49,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482167357] [2024-11-28 02:17:49,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:49,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:49,616 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:49,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:49,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:49,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1383, now seen corresponding path program 1 times [2024-11-28 02:17:49,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:49,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631296208] [2024-11-28 02:17:49,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:49,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:49,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 02:17:49,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631296208] [2024-11-28 02:17:49,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631296208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:17:49,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522074877] [2024-11-28 02:17:49,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:49,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:49,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:49,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:49,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:17:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:49,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:17:49,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:49,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:17:49,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522074877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:17:49,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:17:49,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1, 1, 1] total 1 [2024-11-28 02:17:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268680776] [2024-11-28 02:17:49,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:17:49,907 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 02:17:49,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 02:17:49,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:17:49,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:17:49,954 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-11-28 02:17:49,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:49,986 INFO L93 Difference]: Finished difference Result 6 states and 9 transitions. [2024-11-28 02:17:49,988 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 9 transitions. [2024-11-28 02:17:49,988 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2024-11-28 02:17:49,997 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 9 transitions. [2024-11-28 02:17:49,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-28 02:17:50,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-28 02:17:50,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 9 transitions. [2024-11-28 02:17:50,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 02:17:50,001 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 9 transitions. [2024-11-28 02:17:50,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 9 transitions. [2024-11-28 02:17:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2024-11-28 02:17:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-11-28 02:17:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2024-11-28 02:17:50,034 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 9 transitions. [2024-11-28 02:17:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:17:50,042 INFO L425 stractBuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2024-11-28 02:17:50,042 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-28 02:17:50,042 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2024-11-28 02:17:50,043 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2024-11-28 02:17:50,043 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:17:50,043 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:17:50,044 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 02:17:50,044 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 02:17:50,044 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" [2024-11-28 02:17:50,044 INFO L749 eck$LassoCheckResult]: Loop: "assume !(main_~i~0#1 > 0);" "assume main_~i~0#1 < 0;main_~i~0#1 := 1 + main_~i~0#1;" [2024-11-28 02:17:50,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:50,045 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-28 02:17:50,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:50,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400835167] [2024-11-28 02:17:50,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:50,053 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:50,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:50,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1445, now seen corresponding path program 1 times [2024-11-28 02:17:50,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:50,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833947375] [2024-11-28 02:17:50,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:50,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:50,072 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:50,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:50,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:50,083 INFO L85 PathProgramCache]: Analyzing trace with hash 925927, now seen corresponding path program 1 times [2024-11-28 02:17:50,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:50,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228001389] [2024-11-28 02:17:50,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:50,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:50,093 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:50,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:50,171 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 02:17:50,171 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 02:17:50,172 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 02:17:50,172 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 02:17:50,172 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-28 02:17:50,172 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:50,172 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 02:17:50,172 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 02:17:50,177 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration2_Loop [2024-11-28 02:17:50,177 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 02:17:50,177 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 02:17:50,198 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:50,213 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:50,220 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:50,321 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 02:17:50,322 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-28 02:17:50,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:50,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:50,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:50,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-28 02:17:50,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 02:17:50,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 02:17:50,373 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-28 02:17:50,374 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-28 02:17:50,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-28 02:17:50,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:50,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:50,392 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:50,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-28 02:17:50,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 02:17:50,399 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 02:17:50,430 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-28 02:17:50,430 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-28 02:17:50,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-28 02:17:50,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:50,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:50,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:50,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-28 02:17:50,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 02:17:50,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 02:17:50,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:50,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:50,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:50,483 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:50,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-28 02:17:50,489 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-28 02:17:50,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 02:17:50,532 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-28 02:17:50,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:50,537 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 02:17:50,538 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 02:17:50,538 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 02:17:50,538 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 02:17:50,538 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-28 02:17:50,538 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:50,538 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 02:17:50,538 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 02:17:50,538 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration2_Loop [2024-11-28 02:17:50,538 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 02:17:50,538 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 02:17:50,541 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:50,547 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:50,554 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:50,636 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 02:17:50,641 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-28 02:17:50,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:50,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:50,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:50,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-28 02:17:50,649 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-28 02:17:50,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:17:50,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:17:50,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:17:50,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:17:50,687 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-28 02:17:50,687 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-28 02:17:50,699 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:17:50,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:50,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:50,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:50,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:50,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-28 02:17:50,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-28 02:17:50,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:17:50,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:17:50,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:17:50,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:17:50,752 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-28 02:17:50,752 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-28 02:17:50,784 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:17:50,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:50,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:50,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:50,800 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:50,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-28 02:17:50,805 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-28 02:17:50,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:17:50,823 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:17:50,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:17:50,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:17:50,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:17:50,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:17:50,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:17:50,830 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-28 02:17:50,835 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-28 02:17:50,839 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-28 02:17:50,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:50,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:50,844 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:50,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-28 02:17:50,848 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-28 02:17:50,848 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-28 02:17:50,848 INFO L474 LassoAnalysis]: Proved termination. [2024-11-28 02:17:50,848 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-11-28 02:17:50,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-28 02:17:50,865 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-28 02:17:50,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:50,908 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:17:50,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:50,923 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:17:50,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:17:50,936 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-28 02:17:50,938 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-28 02:17:50,979 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 13 states and 20 transitions. Complement of second has 5 states. [2024-11-28 02:17:50,981 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 [2024-11-28 02:17:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-28 02:17:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-28 02:17:50,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 2 letters. [2024-11-28 02:17:50,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:17:50,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-28 02:17:50,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:17:50,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-28 02:17:50,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:17:50,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 20 transitions. [2024-11-28 02:17:50,992 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2024-11-28 02:17:50,994 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 11 states and 17 transitions. [2024-11-28 02:17:50,995 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-11-28 02:17:50,996 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-11-28 02:17:50,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 17 transitions. [2024-11-28 02:17:50,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-28 02:17:50,996 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 17 transitions. [2024-11-28 02:17:50,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 17 transitions. [2024-11-28 02:17:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2024-11-28 02:17:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:17:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2024-11-28 02:17:51,002 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 12 transitions. [2024-11-28 02:17:51,002 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2024-11-28 02:17:51,002 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-28 02:17:51,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 12 transitions. [2024-11-28 02:17:51,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 02:17:51,002 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:17:51,002 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:17:51,004 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-28 02:17:51,004 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 02:17:51,005 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" "assume !(main_~i~0#1 > 0);" [2024-11-28 02:17:51,008 INFO L749 eck$LassoCheckResult]: Loop: "assume !(main_~i~0#1 < 0);" "assume main_~i~0#1 > 0;main_~i~0#1 := main_~i~0#1 - 1;" [2024-11-28 02:17:51,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:51,009 INFO L85 PathProgramCache]: Analyzing trace with hash 29868, now seen corresponding path program 1 times [2024-11-28 02:17:51,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:51,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407946019] [2024-11-28 02:17:51,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:51,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:51,017 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:51,020 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:51,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:51,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1625, now seen corresponding path program 1 times [2024-11-28 02:17:51,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:51,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889453969] [2024-11-28 02:17:51,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:51,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:51,033 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:51,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:51,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash 28703812, now seen corresponding path program 1 times [2024-11-28 02:17:51,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:51,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838828033] [2024-11-28 02:17:51,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:51,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:51,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 02:17:51,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838828033] [2024-11-28 02:17:51,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838828033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:17:51,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741560470] [2024-11-28 02:17:51,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:51,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:51,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,067 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:17:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:51,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:17:51,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:51,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:17:51,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741560470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:17:51,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:17:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 02:17:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78674658] [2024-11-28 02:17:51,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:17:51,162 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 02:17:51,162 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 02:17:51,162 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 02:17:51,162 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 02:17:51,163 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-28 02:17:51,163 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,163 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 02:17:51,163 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 02:17:51,163 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration3_Loop [2024-11-28 02:17:51,163 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 02:17:51,163 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 02:17:51,165 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:51,171 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:51,176 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:51,241 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 02:17:51,241 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-28 02:17:51,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,244 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-28 02:17:51,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 02:17:51,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 02:17:51,282 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-28 02:17:51,282 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-28 02:17:51,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-28 02:17:51,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-28 02:17:51,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 02:17:51,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 02:17:51,333 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-28 02:17:51,333 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-28 02:17:51,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:51,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,347 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-28 02:17:51,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 02:17:51,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 02:17:51,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:51,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,387 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-28 02:17:51,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-28 02:17:51,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 02:17:51,440 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-28 02:17:51,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:51,446 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 02:17:51,446 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 02:17:51,446 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 02:17:51,446 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 02:17:51,446 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-28 02:17:51,446 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,447 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 02:17:51,447 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 02:17:51,447 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration3_Loop [2024-11-28 02:17:51,447 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 02:17:51,447 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 02:17:51,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:51,455 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:51,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:51,540 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 02:17:51,540 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-28 02:17:51,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,543 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-28 02:17:51,549 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-28 02:17:51,567 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:17:51,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:17:51,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:17:51,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:17:51,571 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-28 02:17:51,572 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-28 02:17:51,579 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:17:51,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:51,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-28 02:17:51,598 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-28 02:17:51,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:17:51,616 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:17:51,616 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:17:51,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:17:51,622 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-28 02:17:51,622 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-28 02:17:51,633 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 02:17:51,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-28 02:17:51,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,647 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-28 02:17:51,652 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-28 02:17:51,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:17:51,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:17:51,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:17:51,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:17:51,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:17:51,672 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:17:51,672 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:17:51,676 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-28 02:17:51,680 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-28 02:17:51,680 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-28 02:17:51,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,685 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-28 02:17:51,689 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-28 02:17:51,689 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-28 02:17:51,689 INFO L474 LassoAnalysis]: Proved termination. [2024-11-28 02:17:51,689 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-11-28 02:17:51,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:51,704 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-28 02:17:51,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:51,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:17:51,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:51,742 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:17:51,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:17:51,747 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-28 02:17:51,747 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 12 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2024-11-28 02:17:51,766 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 12 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) Result 17 states and 26 transitions. Complement of second has 5 states. [2024-11-28 02:17:51,766 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 [2024-11-28 02:17:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2024-11-28 02:17:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-11-28 02:17:51,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2024-11-28 02:17:51,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:17:51,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-28 02:17:51,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:17:51,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-28 02:17:51,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:17:51,770 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 26 transitions. [2024-11-28 02:17:51,771 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2024-11-28 02:17:51,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 26 transitions. [2024-11-28 02:17:51,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-11-28 02:17:51,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-28 02:17:51,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 26 transitions. [2024-11-28 02:17:51,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-28 02:17:51,772 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 26 transitions. [2024-11-28 02:17:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 26 transitions. [2024-11-28 02:17:51,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2024-11-28 02:17:51,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 14 states have internal predecessors, (24), 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) [2024-11-28 02:17:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2024-11-28 02:17:51,775 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 24 transitions. [2024-11-28 02:17:51,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 02:17:51,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:17:51,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:17:51,776 INFO L87 Difference]: Start difference. First operand 15 states and 24 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-11-28 02:17:51,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:51,791 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2024-11-28 02:17:51,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2024-11-28 02:17:51,792 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2024-11-28 02:17:51,792 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 12 states and 16 transitions. [2024-11-28 02:17:51,792 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-11-28 02:17:51,793 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-11-28 02:17:51,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2024-11-28 02:17:51,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-28 02:17:51,793 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 16 transitions. [2024-11-28 02:17:51,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2024-11-28 02:17:51,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 9. [2024-11-28 02:17:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 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) [2024-11-28 02:17:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2024-11-28 02:17:51,795 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 13 transitions. [2024-11-28 02:17:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:17:51,796 INFO L425 stractBuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2024-11-28 02:17:51,796 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-28 02:17:51,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2024-11-28 02:17:51,797 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2024-11-28 02:17:51,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:17:51,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:17:51,798 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-28 02:17:51,798 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 02:17:51,798 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" "assume main_~i~0#1 > 0;main_~i~0#1 := main_~i~0#1 - 1;" [2024-11-28 02:17:51,798 INFO L749 eck$LassoCheckResult]: Loop: "assume !(main_~i~0#1 < 0);" "assume main_~i~0#1 > 0;main_~i~0#1 := main_~i~0#1 - 1;" [2024-11-28 02:17:51,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:51,799 INFO L85 PathProgramCache]: Analyzing trace with hash 29866, now seen corresponding path program 1 times [2024-11-28 02:17:51,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:51,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767768715] [2024-11-28 02:17:51,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:51,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:51,804 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:51,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:51,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:51,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1625, now seen corresponding path program 2 times [2024-11-28 02:17:51,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:51,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753376072] [2024-11-28 02:17:51,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:51,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:51,812 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:51,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:51,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:51,816 INFO L85 PathProgramCache]: Analyzing trace with hash 28701890, now seen corresponding path program 1 times [2024-11-28 02:17:51,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:51,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060074129] [2024-11-28 02:17:51,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:51,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:51,824 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:51,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:51,859 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 02:17:51,859 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 02:17:51,860 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 02:17:51,860 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 02:17:51,860 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-28 02:17:51,860 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,860 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 02:17:51,860 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 02:17:51,860 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration4_Loop [2024-11-28 02:17:51,860 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 02:17:51,860 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 02:17:51,862 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:51,872 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:51,877 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:51,934 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 02:17:51,934 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-28 02:17:51,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,938 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-28 02:17:51,943 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 02:17:51,943 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 02:17:51,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:51,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:51,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:51,979 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:51,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-28 02:17:51,984 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-28 02:17:51,984 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 02:17:52,025 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-28 02:17:52,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:52,030 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 02:17:52,030 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 02:17:52,030 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 02:17:52,031 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 02:17:52,031 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-28 02:17:52,031 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:52,031 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 02:17:52,031 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 02:17:52,031 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration4_Loop [2024-11-28 02:17:52,031 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 02:17:52,031 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 02:17:52,032 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:52,042 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:52,047 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 02:17:52,105 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 02:17:52,105 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-28 02:17:52,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:52,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:52,108 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:52,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-28 02:17:52,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-28 02:17:52,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 02:17:52,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 02:17:52,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 02:17:52,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 02:17:52,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 02:17:52,134 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 02:17:52,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 02:17:52,138 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-28 02:17:52,142 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-28 02:17:52,143 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-28 02:17:52,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 02:17:52,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:52,147 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 02:17:52,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-28 02:17:52,152 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-28 02:17:52,152 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-28 02:17:52,152 INFO L474 LassoAnalysis]: Proved termination. [2024-11-28 02:17:52,152 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-11-28 02:17:52,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:52,164 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-28 02:17:52,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:52,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:17:52,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:52,213 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:17:52,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:17:52,219 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-28 02:17:52,219 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2024-11-28 02:17:52,240 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) Result 15 states and 21 transitions. Complement of second has 4 states. [2024-11-28 02:17:52,242 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 [2024-11-28 02:17:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2024-11-28 02:17:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2024-11-28 02:17:52,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 2 letters. [2024-11-28 02:17:52,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:17:52,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-28 02:17:52,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:17:52,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-28 02:17:52,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 02:17:52,244 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 21 transitions. [2024-11-28 02:17:52,244 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2024-11-28 02:17:52,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 18 transitions. [2024-11-28 02:17:52,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-28 02:17:52,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-11-28 02:17:52,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2024-11-28 02:17:52,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-28 02:17:52,248 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-11-28 02:17:52,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2024-11-28 02:17:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2024-11-28 02:17:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 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) [2024-11-28 02:17:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2024-11-28 02:17:52,252 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 15 transitions. [2024-11-28 02:17:52,252 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2024-11-28 02:17:52,252 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-28 02:17:52,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2024-11-28 02:17:52,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 02:17:52,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 02:17:52,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 02:17:52,254 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-28 02:17:52,255 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 02:17:52,255 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" "assume !(main_~i~0#1 > 0);" [2024-11-28 02:17:52,256 INFO L749 eck$LassoCheckResult]: Loop: "assume !(main_~i~0#1 < 0);" "assume !(main_~i~0#1 > 0);" [2024-11-28 02:17:52,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:52,256 INFO L85 PathProgramCache]: Analyzing trace with hash 29868, now seen corresponding path program 2 times [2024-11-28 02:17:52,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:52,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060097153] [2024-11-28 02:17:52,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:52,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:52,266 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:52,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:52,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:52,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1627, now seen corresponding path program 1 times [2024-11-28 02:17:52,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:52,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035445561] [2024-11-28 02:17:52,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:52,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:52,275 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:52,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:52,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:52,278 INFO L85 PathProgramCache]: Analyzing trace with hash 28703814, now seen corresponding path program 1 times [2024-11-28 02:17:52,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 02:17:52,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970238642] [2024-11-28 02:17:52,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:52,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:52,282 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:52,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 02:17:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:52,334 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:17:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:17:52,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:17:52 BoogieIcfgContainer [2024-11-28 02:17:52,373 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-28 02:17:52,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:17:52,373 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:17:52,374 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:17:52,375 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:17:49" (3/4) ... [2024-11-28 02:17:52,377 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-28 02:17:52,419 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:17:52,420 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:17:52,424 INFO L158 Benchmark]: Toolchain (without parser) took 3658.76ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 48.6MB in the end (delta: 44.4MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2024-11-28 02:17:52,424 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:17:52,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.80ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 83.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:17:52,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.50ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 82.2MB in the end (delta: 786.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:17:52,425 INFO L158 Benchmark]: Boogie Preprocessor took 41.15ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 81.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:17:52,425 INFO L158 Benchmark]: RCFGBuilder took 274.51ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 73.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:17:52,426 INFO L158 Benchmark]: BuchiAutomizer took 3027.46ms. Allocated memory is still 117.4MB. Free memory was 73.2MB in the beginning and 50.2MB in the end (delta: 23.0MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2024-11-28 02:17:52,426 INFO L158 Benchmark]: Witness Printer took 46.39ms. Allocated memory is still 117.4MB. Free memory was 50.2MB in the beginning and 48.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:17:52,431 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.80ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 83.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.50ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 82.2MB in the end (delta: 786.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.15ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 81.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 274.51ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 73.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3027.46ms. Allocated memory is still 117.4MB. Free memory was 73.2MB in the beginning and 50.2MB in the end (delta: 23.0MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Witness Printer took 46.39ms. Allocated memory is still 117.4MB. Free memory was 50.2MB in the beginning and 48.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. 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, 3 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function ((long) -1 * i) and consists of 3 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function i and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 23 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax213 hnf100 lsp46 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 57ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L10] COND FALSE !(i > 0) VAL [i=0] Loop: [L13] COND FALSE !(i < 0) [L10] COND FALSE !(i > 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L10] COND FALSE !(i > 0) VAL [i=0] Loop: [L13] COND FALSE !(i < 0) [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-28 02:17:52,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-28 02:17:52,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:52,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:53,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:17:53,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:17:53,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_510d59b0-cba8-4cd8-9bce-45e0a4e7a13f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)