./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/not-04-false.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/not-04-false.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f815f3ab50b7f44d2a4cc7a3cc9776599ba436b7ffe87c8d1b9c4b6bd093d6ef --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:43:56,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:43:57,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-26 11:43:57,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:43:57,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:43:57,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:43:57,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:43:57,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:43:57,143 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:43:57,148 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:43:57,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:43:57,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:43:57,149 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:43:57,152 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 11:43:57,152 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 11:43:57,152 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 11:43:57,153 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 11:43:57,153 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 11:43:57,154 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 11:43:57,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:43:57,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 11:43:57,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:43:57,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:43:57,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 11:43:57,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 11:43:57,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 11:43:57,171 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:43:57,172 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:43:57,172 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 11:43:57,190 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:43:57,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:43:57,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:43:57,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:43:57,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:43:57,192 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 11:43:57,192 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_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f815f3ab50b7f44d2a4cc7a3cc9776599ba436b7ffe87c8d1b9c4b6bd093d6ef [2023-11-26 11:43:57,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:43:57,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:43:57,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:43:57,609 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:43:57,610 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:43:57,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-bwb/not-04-false.c [2023-11-26 11:44:00,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:44:00,892 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:44:00,892 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/sv-benchmarks/c/termination-bwb/not-04-false.c [2023-11-26 11:44:00,900 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/data/3c822b195/cff3434a5aae42629a2168a9cf39d681/FLAGe3aaf3117 [2023-11-26 11:44:00,917 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/data/3c822b195/cff3434a5aae42629a2168a9cf39d681 [2023-11-26 11:44:00,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:44:00,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:44:00,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:00,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:44:00,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:44:00,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@623442d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00, skipping insertion in model container [2023-11-26 11:44:00,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,952 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:44:01,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:01,118 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:44:01,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:01,147 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:44:01,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01 WrapperNode [2023-11-26 11:44:01,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:01,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:01,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:44:01,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:44:01,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,180 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-26 11:44:01,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:01,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:44:01,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:44:01,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:44:01,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,205 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-26 11:44:01,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,216 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:44:01,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:44:01,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:44:01,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:44:01,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (1/1) ... [2023-11-26 11:44:01,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:01,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:01,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:01,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 11:44:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:44:01,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:44:01,371 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:44:01,373 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:44:01,460 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:44:01,470 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:44:01,471 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:44:01,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:01 BoogieIcfgContainer [2023-11-26 11:44:01,481 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:44:01,483 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 11:44:01,483 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 11:44:01,487 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 11:44:01,488 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:44:01,489 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 11:44:00" (1/3) ... [2023-11-26 11:44:01,490 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f64258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:44:01, skipping insertion in model container [2023-11-26 11:44:01,491 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:44:01,492 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:01" (2/3) ... [2023-11-26 11:44:01,492 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f64258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:44:01, skipping insertion in model container [2023-11-26 11:44:01,494 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:44:01,494 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:01" (3/3) ... [2023-11-26 11:44:01,496 INFO L332 chiAutomizerObserver]: Analyzing ICFG not-04-false.c [2023-11-26 11:44:01,583 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 11:44:01,585 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 11:44:01,585 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 11:44:01,586 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 11:44:01,586 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 11:44:01,587 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 11:44:01,587 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 11:44:01,588 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 11:44:01,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:01,636 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-26 11:44:01,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:44:01,650 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:44:01,656 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 11:44:01,657 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-26 11:44:01,657 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 11:44:01,658 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:01,660 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-26 11:44:01,661 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:44:01,661 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:44:01,661 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 11:44:01,661 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-26 11:44:01,686 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~a~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~a~0#1 := 0; 6#L18-2true [2023-11-26 11:44:01,686 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 < 0); 3#L18true assume !(main_~x~0#1 < 0 && main_~y~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - 1; 6#L18-2true [2023-11-26 11:44:01,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-26 11:44:01,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:01,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945748046] [2023-11-26 11:44:01,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:01,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:01,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:44:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:01,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:44:01,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2023-11-26 11:44:01,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:01,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009959795] [2023-11-26 11:44:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:01,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:01,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:44:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:01,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:44:01,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:01,865 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-11-26 11:44:01,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:01,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747408526] [2023-11-26 11:44:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:01,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:01,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:44:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:01,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:44:02,042 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:44:02,044 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:44:02,044 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:44:02,044 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:44:02,044 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:44:02,045 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,045 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:44:02,045 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:44:02,045 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-04-false.c_Iteration1_Loop [2023-11-26 11:44:02,045 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:44:02,046 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:44:02,062 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:44:02,075 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:44:02,130 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:44:02,131 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:44:02,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-26 11:44:02,142 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:44:02,142 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:44:02,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:44:02,164 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:44:02,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-26 11:44:02,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-26 11:44:02,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:44:02,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:44:02,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:02,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,202 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-26 11:44:02,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:44:02,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:44:02,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:44:02,242 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=-1} Honda state: {ULTIMATE.start_main_~x~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=-1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [9, 1, 4] Nus: [0, 1] [2023-11-26 11:44:02,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:02,263 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:44:02,263 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:44:02,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:44:02,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:44:02,264 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:44:02,264 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,264 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:44:02,264 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:44:02,264 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-04-false.c_Iteration1_Lasso [2023-11-26 11:44:02,265 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:44:02,265 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:44:02,267 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:44:02,275 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:44:02,280 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:44:02,284 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:44:02,292 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:44:02,297 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:44:02,358 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:44:02,358 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:44:02,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,360 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:44:02,383 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:44:02,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-26 11:44:02,422 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:44:02,422 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=0} Honda state: {ULTIMATE.start_main_~a~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:44:02,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:02,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:44:02,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:44:02,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-26 11:44:02,467 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:44:02,467 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:44:02,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:02,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,478 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-26 11:44:02,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:44:02,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:44:02,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:44:02,496 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:44:02,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-26 11:44:02,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,504 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-26 11:44:02,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:44:02,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:44:02,536 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:44:02,536 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:44:02,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:02,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,544 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-26 11:44:02,550 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:44:02,550 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:44:02,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:44:02,563 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: [] [2023-11-26 11:44:02,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-26 11:44:02,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-26 11:44:02,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:44:02,571 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:44:02,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:02,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:44:02,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,590 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-26 11:44:02,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:44:02,595 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:44:02,635 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:44:02,635 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=-1} Honda state: {ULTIMATE.start_main_~x~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=-1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [9, 1, 4] Nus: [0, 1] [2023-11-26 11:44:02,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:02,654 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-26 11:44:02,655 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated [2023-11-26 11:44:02,656 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-26 11:44:02,656 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated [2023-11-26 11:44:02,656 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-26 11:44:02,657 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated [2023-11-26 11:44:02,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 11:44:02 BoogieIcfgContainer [2023-11-26 11:44:02,664 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 11:44:02,665 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:44:02,665 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:44:02,665 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:44:02,666 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:01" (3/4) ... [2023-11-26 11:44:02,667 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-26 11:44:02,698 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:44:02,698 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:44:02,700 INFO L158 Benchmark]: Toolchain (without parser) took 1776.74ms. Allocated memory is still 188.7MB. Free memory was 158.5MB in the beginning and 119.6MB in the end (delta: 38.9MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2023-11-26 11:44:02,700 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:44:02,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.25ms. Allocated memory is still 188.7MB. Free memory was 158.3MB in the beginning and 151.9MB in the end (delta: 6.4MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2023-11-26 11:44:02,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.69ms. Allocated memory is still 188.7MB. Free memory was 151.9MB in the beginning and 150.9MB in the end (delta: 974.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:44:02,702 INFO L158 Benchmark]: Boogie Preprocessor took 37.48ms. Allocated memory is still 188.7MB. Free memory was 150.9MB in the beginning and 149.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:44:02,703 INFO L158 Benchmark]: RCFGBuilder took 261.25ms. Allocated memory is still 188.7MB. Free memory was 149.7MB in the beginning and 141.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 11:44:02,703 INFO L158 Benchmark]: BuchiAutomizer took 1182.04ms. Allocated memory is still 188.7MB. Free memory was 141.3MB in the beginning and 122.0MB in the end (delta: 19.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2023-11-26 11:44:02,704 INFO L158 Benchmark]: Witness Printer took 32.93ms. Allocated memory is still 188.7MB. Free memory was 122.0MB in the beginning and 119.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:44:02,707 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.25ms. Allocated memory is still 188.7MB. Free memory was 158.3MB in the beginning and 151.9MB in the end (delta: 6.4MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.69ms. Allocated memory is still 188.7MB. Free memory was 151.9MB in the beginning and 150.9MB in the end (delta: 974.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.48ms. Allocated memory is still 188.7MB. Free memory was 150.9MB in the beginning and 149.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 261.25ms. Allocated memory is still 188.7MB. Free memory was 149.7MB in the beginning and 141.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1182.04ms. Allocated memory is still 188.7MB. Free memory was 141.3MB in the beginning and 122.0MB in the end (delta: 19.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Witness Printer took 32.93ms. Allocated memory is still 188.7MB. Free memory was 122.0MB in the beginning and 119.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp66 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 17]: Nontermination argument in form of an infinite program execution. [2023-11-26 11:44:02,721 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-26 11:44:02,722 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated [2023-11-26 11:44:02,722 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-26 11:44:02,722 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated [2023-11-26 11:44:02,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-26 11:44:02,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated [2023-11-26 11:44:02,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-26 11:44:02,724 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated [2023-11-26 11:44:02,724 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-26 11:44:02,724 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated [2023-11-26 11:44:02,725 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-26 11:44:02,725 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet0 could not be translated Nontermination argument in form of an infinite execution State at position 0 is {y=-1, x=-1, a=0, \result=0} State at position 1 is {y=-1, x=-1, a=0, \result=0} For i>1, the state at position i is {y=-1 + sum_{k=0}^i 0, x=-1 + sum_{k=0}^i -1, a=0 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 1GEVs Lambdas: [9, 1, 4] Mus: [0, 1] - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int a, x, y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] a = 0 Loop: [L17] COND TRUE x<0 [L18] COND FALSE !(x < 0 && y>= 0) [L21] x = x-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-26 11:44:02,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eadf5854-9f94-44d6-86bb-480d102be724/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)