./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu --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 de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:19,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:19,509 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 08:04:19,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:19,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:19,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:19,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:19,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:19,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:19,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:19,548 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:19,548 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 08:04:19,549 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 08:04:19,550 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 08:04:19,550 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 08:04:19,551 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 08:04:19,552 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 08:04:19,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:19,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 08:04:19,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:19,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:19,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 08:04:19,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 08:04:19,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 08:04:19,557 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:04:19,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:19,558 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 08:04:19,558 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:19,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:19,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:19,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:19,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:19,561 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 08:04:19,562 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2023-11-19 08:04:19,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:19,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:19,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:19,834 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:19,835 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:19,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-11-19 08:04:23,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:23,299 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:23,299 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-11-19 08:04:23,307 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/data/fad5963bb/c4eb06500045497a995bef7ac910e052/FLAG1b06d4d1d [2023-11-19 08:04:23,325 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/data/fad5963bb/c4eb06500045497a995bef7ac910e052 [2023-11-19 08:04:23,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:23,329 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:23,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:23,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:23,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:23,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ba6be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23, skipping insertion in model container [2023-11-19 08:04:23,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,363 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:23,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:23,503 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:23,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:23,528 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:23,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23 WrapperNode [2023-11-19 08:04:23,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:23,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:23,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:23,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:23,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,564 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2023-11-19 08:04:23,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:23,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:23,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:23,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:23,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:23,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:23,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:23,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:23,592 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (1/1) ... [2023-11-19 08:04:23,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:23,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:23,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:23,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-11-19 08:04:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-11-19 08:04:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:23,721 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:23,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:23,816 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:23,825 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:23,825 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:04:23,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:23 BoogieIcfgContainer [2023-11-19 08:04:23,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:23,830 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 08:04:23,833 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 08:04:23,837 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 08:04:23,838 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:04:23,838 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 08:04:23" (1/3) ... [2023-11-19 08:04:23,839 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@343d5677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 08:04:23, skipping insertion in model container [2023-11-19 08:04:23,839 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:04:23,839 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:23" (2/3) ... [2023-11-19 08:04:23,840 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@343d5677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 08:04:23, skipping insertion in model container [2023-11-19 08:04:23,840 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:04:23,840 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:23" (3/3) ... [2023-11-19 08:04:23,841 INFO L332 chiAutomizerObserver]: Analyzing ICFG rec_counter1.c [2023-11-19 08:04:23,903 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 08:04:23,903 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 08:04:23,903 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 08:04:23,903 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 08:04:23,903 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 08:04:23,903 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 08:04:23,904 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 08:04:23,904 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 08:04:23,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:04:23,936 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 08:04:23,937 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:04:23,937 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:04:23,961 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 08:04:23,961 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 08:04:23,962 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 08:04:23,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:04:23,964 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-11-19 08:04:23,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:04:23,964 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:04:23,965 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 08:04:23,965 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 08:04:23,972 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;havoc main_#t~nondet2#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 7#L18true assume !(main_~i~0#1 <= 0); 15#L20true call main_#t~ret3#1 := rec(main_~i~0#1);< 12#$Ultimate##0true [2023-11-19 08:04:23,973 INFO L750 eck$LassoCheckResult]: Loop: 12#$Ultimate##0true ~a := #in~a; 4#L5true assume !(0 == ~a); 9#L8true call #t~ret0 := rec(~a - 1);< 12#$Ultimate##0true [2023-11-19 08:04:23,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:23,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1572139, now seen corresponding path program 1 times [2023-11-19 08:04:23,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:23,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828108623] [2023-11-19 08:04:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:23,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:24,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:24,089 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:24,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash 29949, now seen corresponding path program 1 times [2023-11-19 08:04:24,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:24,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141387612] [2023-11-19 08:04:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:24,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:24,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:24,106 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:24,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:24,108 INFO L85 PathProgramCache]: Analyzing trace with hash -409047149, now seen corresponding path program 1 times [2023-11-19 08:04:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:24,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921859016] [2023-11-19 08:04:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:24,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:24,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:24,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:24,249 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:04:24,250 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:04:24,250 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:04:24,250 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:04:24,250 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 08:04:24,250 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:24,250 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:04:24,250 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:04:24,251 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Loop [2023-11-19 08:04:24,251 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:04:24,251 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:04:24,265 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,276 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,280 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,283 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,287 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,291 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,301 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,386 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:04:24,391 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 08:04:24,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:24,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:24,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:24,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 08:04:24,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:24,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:24,437 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:24,437 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:24,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-19 08:04:24,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:24,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:24,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:24,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:24,468 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:24,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 08:04:24,482 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:24,482 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:24,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:24,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:24,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:24,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:24,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 08:04:24,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:24,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:24,527 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:24,527 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:24,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-19 08:04:24,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:24,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:24,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:24,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 08:04:24,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:24,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:24,600 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:24,601 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:24,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:24,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:24,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:24,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:24,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 08:04:24,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:24,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:24,664 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:24,664 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:24,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:24,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:24,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:24,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:24,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:24,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:24,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 08:04:24,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:24,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:24,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:24,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:24,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:04:24,770 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:24,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 08:04:24,811 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:24,811 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-1} Honda state: {rec_#in~a=-1} Generalized eigenvectors: [{rec_#in~a=0}, {rec_#in~a=0}, {rec_#in~a=-1}] Lambdas: [4, 1, 1] Nus: [1, 0] [2023-11-19 08:04:24,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:24,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:24,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:24,838 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:24,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 08:04:24,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:24,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:24,873 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:24,873 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:24,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:24,926 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:04:24,928 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:04:24,928 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:04:24,928 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:04:24,932 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 08:04:24,932 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:24,932 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:04:24,932 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:04:24,932 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2023-11-19 08:04:24,932 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:04:24,933 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:04:24,935 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,938 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,941 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,947 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,954 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,958 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,961 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,976 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,980 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,983 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:24,986 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,066 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:04:25,066 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 08:04:25,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 08:04:25,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,112 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 08:04:25,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,137 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,152 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,152 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 08:04:25,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,194 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,194 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,212 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 08:04:25,252 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,252 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,272 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 08:04:25,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,308 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4#1=0} Honda state: {ULTIMATE.start_#t~ret4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,329 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 08:04:25,331 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,353 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,353 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,367 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 08:04:25,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,381 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,398 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 08:04:25,401 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,401 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,413 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,413 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3#1=0} Honda state: {ULTIMATE.start_main_#t~ret3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,430 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-19 08:04:25,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,449 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,449 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,474 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 08:04:25,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,489 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,489 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-19 08:04:25,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,504 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 08:04:25,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,522 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:04:25,522 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~1#1=0} Honda state: {ULTIMATE.start_main_~res~1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:04:25,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-19 08:04:25,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,542 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-19 08:04:25,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:25,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,599 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 08:04:25,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:04:25,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:25,650 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 08:04:25,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2023-11-19 08:04:25,653 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:04:25,653 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:04:25,653 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:04:25,653 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:04:25,653 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:04:25,653 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,654 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:04:25,654 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:04:25,654 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2023-11-19 08:04:25,654 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:04:25,654 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:04:25,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,660 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,662 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,668 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,671 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,673 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,676 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,679 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,688 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,691 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,694 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:25,760 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:04:25,765 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:04:25,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,768 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:25,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 08:04:25,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:25,789 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:25,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:25,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:25,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:25,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:25,792 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:25,794 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:04:25,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,807 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 08:04:25,810 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:25,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:25,821 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:25,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:25,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:25,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:25,822 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:25,822 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:25,839 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:04:25,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-19 08:04:25,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,853 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 08:04:25,855 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:25,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:25,865 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:25,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:25,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:25,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:25,866 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:25,867 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:25,887 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:04:25,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,910 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 08:04:25,914 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:25,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:25,925 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:25,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:25,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:25,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:25,926 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:25,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:25,929 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:04:25,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:25,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,945 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,948 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:25,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 08:04:25,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:25,959 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:25,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:25,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:25,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:25,960 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:25,960 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:25,961 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:04:25,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-11-19 08:04:25,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:25,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,975 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 08:04:25,977 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:25,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:25,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:25,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:25,987 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:25,987 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:25,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:25,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:26,016 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:04:26,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:26,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:26,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:26,041 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:26,044 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:26,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:26,057 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:26,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:26,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:26,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:26,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:26,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:26,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 08:04:26,071 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:04:26,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-19 08:04:26,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:26,092 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:26,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 08:04:26,095 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:26,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:26,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:26,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:26,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:26,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:26,106 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:26,106 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:26,114 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:04:26,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:26,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:26,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:26,139 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:26,144 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:26,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:26,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:26,157 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-19 08:04:26,157 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:26,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 08:04:26,173 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2023-11-19 08:04:26,173 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2023-11-19 08:04:26,200 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:04:26,236 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2023-11-19 08:04:26,236 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. [2023-11-19 08:04:26,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:26,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:26,239 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:26,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-19 08:04:26,257 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:04:26,298 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2023-11-19 08:04:26,298 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:04:26,299 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2023-11-19 08:04:26,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:26,333 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-11-19 08:04:26,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:26,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:26,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:04:26,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:26,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:04:26,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:26,618 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2023-11-19 08:04:26,620 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:26,748 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 40 transitions. Complement of second has 13 states. [2023-11-19 08:04:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 08:04:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2023-11-19 08:04:26,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2023-11-19 08:04:26,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:26,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2023-11-19 08:04:26,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:26,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2023-11-19 08:04:26,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:26,759 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 40 transitions. [2023-11-19 08:04:26,763 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 08:04:26,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 18 states and 23 transitions. [2023-11-19 08:04:26,769 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-19 08:04:26,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-11-19 08:04:26,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2023-11-19 08:04:26,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:04:26,772 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 23 transitions. [2023-11-19 08:04:26,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2023-11-19 08:04:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2023-11-19 08:04:26,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:04:26,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-11-19 08:04:26,801 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-11-19 08:04:26,801 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-11-19 08:04:26,801 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 08:04:26,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2023-11-19 08:04:26,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 08:04:26,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:04:26,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:04:26,803 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:26,803 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 08:04:26,804 INFO L748 eck$LassoCheckResult]: Stem: 123#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 124#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;havoc main_#t~nondet2#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 117#L18 assume !(main_~i~0#1 <= 0); 118#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 129#$Ultimate##0 ~a := #in~a; 127#L5 assume !(0 == ~a); 120#L8 call #t~ret0 := rec(~a - 1);< 122#$Ultimate##0 ~a := #in~a; 125#L5 assume 0 == ~a;#res := 0; 126#recFINAL assume true; 130#recEXIT >#35#return; 119#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 121#L10-2 [2023-11-19 08:04:26,804 INFO L750 eck$LassoCheckResult]: Loop: 121#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 121#L10-2 [2023-11-19 08:04:26,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1880555327, now seen corresponding path program 1 times [2023-11-19 08:04:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:26,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851292319] [2023-11-19 08:04:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:26,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:26,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:26,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:26,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2023-11-19 08:04:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473400538] [2023-11-19 08:04:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:26,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:26,828 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:26,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:26,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1832327022, now seen corresponding path program 1 times [2023-11-19 08:04:26,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:26,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808607612] [2023-11-19 08:04:26,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:26,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 08:04:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:04:26,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808607612] [2023-11-19 08:04:27,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808607612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:27,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:04:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976780733] [2023-11-19 08:04:27,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:27,025 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:04:27,025 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:04:27,025 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:04:27,025 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:04:27,025 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 08:04:27,026 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,026 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:04:27,026 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:04:27,026 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2023-11-19 08:04:27,026 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:04:27,026 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:04:27,027 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:27,034 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:27,053 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:04:27,054 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 08:04:27,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:27,056 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:27,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:27,065 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:27,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 08:04:27,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:27,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:27,125 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:27,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:04:27,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:27,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-19 08:04:27,180 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 08:04:27,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:27,189 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:04:27,189 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:04:27,189 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:04:27,189 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:04:27,189 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:04:27,189 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,189 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:04:27,189 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:04:27,190 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2023-11-19 08:04:27,190 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:04:27,190 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:04:27,190 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:27,194 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:27,219 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:04:27,220 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:04:27,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:27,221 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:27,229 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:27,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:27,242 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:27,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:27,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:27,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:27,243 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:27,243 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:27,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-19 08:04:27,259 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:04:27,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:27,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:27,281 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:27,288 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:27,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-19 08:04:27,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:27,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:27,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:27,301 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:27,301 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:27,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:27,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:27,331 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:04:27,335 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 08:04:27,336 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 08:04:27,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:27,337 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:27,339 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:04:27,339 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 08:04:27,340 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:04:27,340 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2023-11-19 08:04:27,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-19 08:04:27,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:27,364 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 08:04:27,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:27,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:04:27,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:27,482 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:27,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:27,483 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2023-11-19 08:04:27,484 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:04:27,524 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 46 states and 65 transitions. Complement of second has 12 states. [2023-11-19 08:04:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 08:04:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:04:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2023-11-19 08:04:27,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 12 letters. Loop has 1 letters. [2023-11-19 08:04:27,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:27,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 13 letters. Loop has 1 letters. [2023-11-19 08:04:27,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:27,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 12 letters. Loop has 2 letters. [2023-11-19 08:04:27,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:27,530 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 65 transitions. [2023-11-19 08:04:27,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 08:04:27,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 24 states and 31 transitions. [2023-11-19 08:04:27,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-19 08:04:27,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-19 08:04:27,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2023-11-19 08:04:27,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:04:27,536 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-11-19 08:04:27,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2023-11-19 08:04:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2023-11-19 08:04:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 08:04:27,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-11-19 08:04:27,540 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-19 08:04:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:27,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:27,544 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:04:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:27,561 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2023-11-19 08:04:27,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2023-11-19 08:04:27,562 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 08:04:27,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 23 transitions. [2023-11-19 08:04:27,564 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2023-11-19 08:04:27,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2023-11-19 08:04:27,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 23 transitions. [2023-11-19 08:04:27,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:04:27,565 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-11-19 08:04:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 23 transitions. [2023-11-19 08:04:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-19 08:04:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 08:04:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-11-19 08:04:27,568 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-11-19 08:04:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:27,569 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-11-19 08:04:27,570 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 08:04:27,570 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 23 transitions. [2023-11-19 08:04:27,571 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 08:04:27,571 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:04:27,571 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:04:27,572 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:27,572 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 08:04:27,572 INFO L748 eck$LassoCheckResult]: Stem: 300#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 301#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;havoc main_#t~nondet2#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 293#L18 assume !(main_~i~0#1 <= 0); 294#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 308#$Ultimate##0 ~a := #in~a; 309#L5 assume !(0 == ~a); 297#L8 call #t~ret0 := rec(~a - 1);< 299#$Ultimate##0 ~a := #in~a; 306#L5 assume !(0 == ~a); 296#L8 call #t~ret0 := rec(~a - 1);< 299#$Ultimate##0 ~a := #in~a; 304#L5 assume 0 == ~a;#res := 0; 305#recFINAL assume true; 312#recEXIT >#35#return; 311#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 302#L10-2 assume !(~rescopy~0 > 0); 303#L10-3 #res := 1 + ~res~0; 310#recFINAL assume true; 307#recEXIT >#35#return; 295#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 298#L10-2 [2023-11-19 08:04:27,573 INFO L750 eck$LassoCheckResult]: Loop: 298#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 298#L10-2 [2023-11-19 08:04:27,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:27,573 INFO L85 PathProgramCache]: Analyzing trace with hash -873780632, now seen corresponding path program 1 times [2023-11-19 08:04:27,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:27,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309124688] [2023-11-19 08:04:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:27,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:27,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:27,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:27,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:27,629 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2023-11-19 08:04:27,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:27,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837784549] [2023-11-19 08:04:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:27,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:27,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:27,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:27,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1317395801, now seen corresponding path program 1 times [2023-11-19 08:04:27,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:27,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291677278] [2023-11-19 08:04:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:27,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:27,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:27,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:27,702 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:04:27,702 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:04:27,702 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:04:27,702 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:04:27,703 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 08:04:27,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:04:27,703 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:04:27,703 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2023-11-19 08:04:27,703 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:04:27,703 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:04:27,704 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:27,710 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:27,728 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:04:27,728 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 08:04:27,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:27,730 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:27,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:04:27,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:27,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-19 08:04:27,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:27,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:27,786 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:27,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:04:27,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:04:27,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-19 08:04:27,844 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 08:04:27,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:27,853 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:04:27,853 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:04:27,853 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:04:27,853 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:04:27,853 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:04:27,853 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:04:27,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:04:27,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2023-11-19 08:04:27,854 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:04:27,854 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:04:27,854 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:27,867 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:04:27,892 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:04:27,892 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:04:27,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:27,894 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:27,899 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:04:27,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-19 08:04:27,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:04:27,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:04:27,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:04:27,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:04:27,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:04:27,911 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:04:27,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:04:27,922 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:04:27,925 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 08:04:27,925 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 08:04:27,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:04:27,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:27,928 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:27,936 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:04:27,936 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 08:04:27,936 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:04:27,936 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2023-11-19 08:04:27,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-19 08:04:27,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:27,961 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 08:04:27,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:28,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:04:28,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:28,240 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:28,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:28,241 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2023-11-19 08:04:28,241 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:04:28,291 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 26 states and 30 transitions. Complement of second has 7 states. [2023-11-19 08:04:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 08:04:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:04:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2023-11-19 08:04:28,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 20 letters. Loop has 1 letters. [2023-11-19 08:04:28,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:28,298 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 08:04:28,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:28,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:04:28,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:28,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:28,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:28,523 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:28,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:28,525 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2023-11-19 08:04:28,526 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:04:28,562 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 26 states and 30 transitions. Complement of second has 7 states. [2023-11-19 08:04:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 08:04:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:04:28,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2023-11-19 08:04:28,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 20 letters. Loop has 1 letters. [2023-11-19 08:04:28,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:28,567 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 08:04:28,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:28,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:04:28,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:28,751 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:28,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:28,752 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2023-11-19 08:04:28,753 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:04:28,796 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 33 states and 41 transitions. Complement of second has 9 states. [2023-11-19 08:04:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 08:04:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:04:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2023-11-19 08:04:28,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 20 letters. Loop has 1 letters. [2023-11-19 08:04:28,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:28,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 21 letters. Loop has 1 letters. [2023-11-19 08:04:28,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:28,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 20 letters. Loop has 2 letters. [2023-11-19 08:04:28,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:04:28,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2023-11-19 08:04:28,807 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 08:04:28,807 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2023-11-19 08:04:28,807 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 08:04:28,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 08:04:28,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 08:04:28,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:28,808 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:04:28,808 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:04:28,808 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:04:28,808 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 08:04:28,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 08:04:28,809 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 08:04:28,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 08:04:28,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 08:04:28 BoogieIcfgContainer [2023-11-19 08:04:28,817 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 08:04:28,818 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:04:28,818 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:04:28,818 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:04:28,819 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:23" (3/4) ... [2023-11-19 08:04:28,821 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 08:04:28,822 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:04:28,823 INFO L158 Benchmark]: Toolchain (without parser) took 5493.34ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 85.3MB in the beginning and 96.9MB in the end (delta: -11.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-19 08:04:28,823 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 54.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:28,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.48ms. Allocated memory is still 127.9MB. Free memory was 84.9MB in the beginning and 75.4MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 08:04:28,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.00ms. Allocated memory is still 127.9MB. Free memory was 75.4MB in the beginning and 74.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:28,825 INFO L158 Benchmark]: Boogie Preprocessor took 24.51ms. Allocated memory is still 127.9MB. Free memory was 74.2MB in the beginning and 73.0MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:04:28,825 INFO L158 Benchmark]: RCFGBuilder took 238.31ms. Allocated memory is still 127.9MB. Free memory was 73.0MB in the beginning and 64.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 08:04:28,826 INFO L158 Benchmark]: BuchiAutomizer took 4987.95ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 64.3MB in the beginning and 97.9MB in the end (delta: -33.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 08:04:28,826 INFO L158 Benchmark]: Witness Printer took 4.28ms. Allocated memory is still 165.7MB. Free memory was 97.9MB in the beginning and 96.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:28,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 54.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.48ms. Allocated memory is still 127.9MB. Free memory was 84.9MB in the beginning and 75.4MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.00ms. Allocated memory is still 127.9MB. Free memory was 75.4MB in the beginning and 74.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.51ms. Allocated memory is still 127.9MB. Free memory was 74.2MB in the beginning and 73.0MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 238.31ms. Allocated memory is still 127.9MB. Free memory was 73.0MB in the beginning and 64.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4987.95ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 64.3MB in the beginning and 97.9MB in the end (delta: -33.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Witness Printer took 4.28ms. Allocated memory is still 165.7MB. Free memory was 97.9MB in the beginning and 96.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 5 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.9s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 3.3s. Construction of modules took 0.0s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 135 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 78 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf94 smp100 dnf120 smp100 tf108 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 160ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-19 08:04:28,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1456168c-df74-4f0b-b527-5b55b75b2245/bin/uautomizer-verify-uCwYo4JHxu/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 Result: TRUE