./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/or-05.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_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/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_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/or-05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/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_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/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 c3769a7b9199e4d3a1d3d7ebad63ad6175b11f31d08bb9cf3238c1849c9b4724 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:57,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:57,891 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 07:47:57,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:57,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:57,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:57,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:57,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:57,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:57,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:57,930 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:57,931 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:47:57,931 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:47:57,932 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:47:57,933 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:47:57,933 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:47:57,934 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:47:57,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:57,935 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:47:57,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:57,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:57,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:47:57,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:47:57,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:47:57,939 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:57,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:57,940 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:47:57,944 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:57,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:57,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:57,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:57,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:57,947 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:47:57,948 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_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3769a7b9199e4d3a1d3d7ebad63ad6175b11f31d08bb9cf3238c1849c9b4724 [2023-11-19 07:47:58,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:58,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:58,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:58,306 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:58,307 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:58,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-bwb/or-05.c [2023-11-19 07:48:01,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:01,776 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:01,777 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/sv-benchmarks/c/termination-bwb/or-05.c [2023-11-19 07:48:01,785 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/data/87edc2ab5/b4ad64eae46c4e4b8ce1f1fffdf8b35b/FLAG4e55b17a8 [2023-11-19 07:48:01,802 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/data/87edc2ab5/b4ad64eae46c4e4b8ce1f1fffdf8b35b [2023-11-19 07:48:01,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:01,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:01,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:01,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:01,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:01,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:01" (1/1) ... [2023-11-19 07:48:01,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea12897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:01, skipping insertion in model container [2023-11-19 07:48:01,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:01" (1/1) ... [2023-11-19 07:48:01,841 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:02,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:02,071 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:02,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:02,111 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:02,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02 WrapperNode [2023-11-19 07:48:02,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:02,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:02,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:02,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:02,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,154 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-11-19 07:48:02,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:02,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:02,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:02,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:02,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,177 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:02,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:02,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:02,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:02,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (1/1) ... [2023-11-19 07:48:02,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:02,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:02,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:02,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:02,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:02,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:02,353 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:02,359 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:02,480 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:02,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:02,488 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:48:02,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:02 BoogieIcfgContainer [2023-11-19 07:48:02,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:02,494 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:48:02,494 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:48:02,498 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:48:02,499 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:48:02,499 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:48:01" (1/3) ... [2023-11-19 07:48:02,500 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16da54dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:48:02, skipping insertion in model container [2023-11-19 07:48:02,500 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:48:02,501 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:02" (2/3) ... [2023-11-19 07:48:02,501 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16da54dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:48:02, skipping insertion in model container [2023-11-19 07:48:02,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:48:02,502 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:02" (3/3) ... [2023-11-19 07:48:02,503 INFO L332 chiAutomizerObserver]: Analyzing ICFG or-05.c [2023-11-19 07:48:02,560 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:48:02,560 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:48:02,560 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:48:02,560 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:48:02,560 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:48:02,560 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:48:02,561 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:48:02,561 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:48:02,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:02,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 07:48:02,582 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:02,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:02,587 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:48:02,587 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 07:48:02,587 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:48:02,588 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:02,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 07:48:02,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:02,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:02,590 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:48:02,590 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 07:48:02,597 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 5#L20-2true [2023-11-19 07:48:02,598 INFO L750 eck$LassoCheckResult]: Loop: 5#L20-2true assume !!(main_~x~0#1 > 0); 11#L20true assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 5#L20-2true [2023-11-19 07:48:02,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-19 07:48:02,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970538263] [2023-11-19 07:48:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:02,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:02,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:02,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:02,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1330, now seen corresponding path program 1 times [2023-11-19 07:48:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:02,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803489859] [2023-11-19 07:48:02,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:02,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:02,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:02,826 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:02,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash 925812, now seen corresponding path program 1 times [2023-11-19 07:48:02,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:02,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253835308] [2023-11-19 07:48:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:02,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:02,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:02,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:02,942 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:02,943 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:02,943 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:02,943 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:02,944 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:48:02,944 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:02,944 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:02,944 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:02,944 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration1_Loop [2023-11-19 07:48:02,945 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:02,945 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:02,964 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 07:48:02,982 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 07:48:03,053 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:03,053 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:48:03,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:03,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:03,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:03,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:48:03,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:03,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:48:03,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:03,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:03,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:03,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:03,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:48:03,135 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:48:03,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:48:03,185 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:48:03,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:03,195 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:48:03,195 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:48:03,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:48:03,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:48:03,195 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:48:03,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:03,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:48:03,196 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:48:03,196 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration1_Loop [2023-11-19 07:48:03,196 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:48:03,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:48:03,197 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 07:48:03,214 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 07:48:03,294 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:48:03,299 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:48:03,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:03,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:03,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:03,306 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 07:48:03,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:48:03,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:48:03,321 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:48:03,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:48:03,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:48:03,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:48:03,325 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:48:03,325 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:48:03,340 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:48:03,346 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 07:48:03,346 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:48:03,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:48:03,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:03,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:03,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:48:03,400 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:48:03,400 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:48:03,401 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:48:03,401 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-19 07:48:03,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:03,423 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:48:03,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:03,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:03,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:03,476 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:48:03,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:03,518 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 07:48:03,573 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:48:03,575 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:03,629 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 43 transitions. Complement of second has 8 states. [2023-11-19 07:48:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:48:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:03,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2023-11-19 07:48:03,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 2 letters. Loop has 2 letters. [2023-11-19 07:48:03,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:03,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-19 07:48:03,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:03,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-19 07:48:03,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:48:03,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 43 transitions. [2023-11-19 07:48:03,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 07:48:03,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 14 states and 21 transitions. [2023-11-19 07:48:03,653 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-11-19 07:48:03,653 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-19 07:48:03,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2023-11-19 07:48:03,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:03,654 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-11-19 07:48:03,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2023-11-19 07:48:03,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2023-11-19 07:48:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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) [2023-11-19 07:48:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2023-11-19 07:48:03,682 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 16 transitions. [2023-11-19 07:48:03,682 INFO L428 stractBuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2023-11-19 07:48:03,682 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:48:03,682 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2023-11-19 07:48:03,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 07:48:03,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:03,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:03,684 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 07:48:03,684 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:48:03,685 INFO L748 eck$LassoCheckResult]: Stem: 87#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 88#L-1 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_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 89#L20-2 assume !!(main_~x~0#1 > 0); 83#L20 assume 1 == main_~y~0#1; 84#L21 [2023-11-19 07:48:03,685 INFO L750 eck$LassoCheckResult]: Loop: 84#L21 assume 0 == main_~y~0#1 || main_~y~0#1 == 1 + main_~y~0#1;main_#t~nondet1#1 := 1 + main_~y~0#1; 85#L21-4 main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 79#L20-2 assume !!(main_~x~0#1 > 0); 80#L20 assume 1 == main_~y~0#1; 84#L21 [2023-11-19 07:48:03,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:03,686 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-19 07:48:03,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:03,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915639878] [2023-11-19 07:48:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:03,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:03,759 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 07:48:03,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:03,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915639878] [2023-11-19 07:48:03,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915639878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:03,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:03,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111197187] [2023-11-19 07:48:03,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:03,782 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:48:03,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:03,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1455309, now seen corresponding path program 1 times [2023-11-19 07:48:03,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:03,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706267381] [2023-11-19 07:48:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:03,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:03,833 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 07:48:03,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706267381] [2023-11-19 07:48:03,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706267381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:03,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:03,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:03,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143418412] [2023-11-19 07:48:03,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:03,837 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:48:03,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:03,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:03,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:03,840 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:03,858 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2023-11-19 07:48:03,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2023-11-19 07:48:03,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 07:48:03,859 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 15 states and 19 transitions. [2023-11-19 07:48:03,860 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-19 07:48:03,860 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-19 07:48:03,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2023-11-19 07:48:03,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:48:03,860 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 19 transitions. [2023-11-19 07:48:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2023-11-19 07:48:03,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-11-19 07:48:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 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) [2023-11-19 07:48:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2023-11-19 07:48:03,863 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 18 transitions. [2023-11-19 07:48:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:03,864 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2023-11-19 07:48:03,864 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:48:03,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2023-11-19 07:48:03,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 07:48:03,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:48:03,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:48:03,866 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2023-11-19 07:48:03,866 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-19 07:48:03,866 INFO L748 eck$LassoCheckResult]: Stem: 121#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 122#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 124#L20-2 assume !!(main_~x~0#1 > 0); 116#L20 assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 115#L20-2 assume !!(main_~x~0#1 > 0); 117#L20 assume 1 == main_~y~0#1; 118#L21 [2023-11-19 07:48:03,866 INFO L750 eck$LassoCheckResult]: Loop: 118#L21 assume !(0 == main_~y~0#1 || main_~y~0#1 == 1 + main_~y~0#1); 120#L21-2 assume !(0 == 1 + main_~y~0#1);assume (main_~y~0#1 < 0 && 1 + main_~y~0#1 >= 0) || main_#t~nondet1#1 >= 1 + main_~y~0#1;assume (main_~y~0#1 >= 0 && 1 + main_~y~0#1 < 0) || main_#t~nondet1#1 >= main_~y~0#1;assume (main_~y~0#1 < 0 || 1 + main_~y~0#1 < 0) || main_#t~nondet1#1 <= main_~y~0#1 + (1 + main_~y~0#1);assume (main_~y~0#1 >= 0 && 1 + main_~y~0#1 >= 0) || main_#t~nondet1#1 < 0;assume main_#t~nondet1#1 <= 2147483647; 123#L21-4 main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 125#L20-2 assume !!(main_~x~0#1 > 0); 126#L20 assume 1 == main_~y~0#1; 118#L21 [2023-11-19 07:48:03,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash 889705687, now seen corresponding path program 1 times [2023-11-19 07:48:03,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:03,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516597024] [2023-11-19 07:48:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:03,876 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:03,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:03,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:03,882 INFO L85 PathProgramCache]: Analyzing trace with hash 46916375, now seen corresponding path program 1 times [2023-11-19 07:48:03,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:03,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59193116] [2023-11-19 07:48:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:03,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:03,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:03,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:03,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:03,901 INFO L85 PathProgramCache]: Analyzing trace with hash 179676161, now seen corresponding path program 1 times [2023-11-19 07:48:03,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:03,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204388371] [2023-11-19 07:48:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:03,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:03,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:03,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:04,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:04,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:48:04 BoogieIcfgContainer [2023-11-19 07:48:04,064 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:48:04,065 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:48:04,065 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:48:04,065 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:48:04,066 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:02" (3/4) ... [2023-11-19 07:48:04,068 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:48:04,069 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:48:04,070 INFO L158 Benchmark]: Toolchain (without parser) took 2263.07ms. Allocated memory is still 138.4MB. Free memory was 93.8MB in the beginning and 60.1MB in the end (delta: 33.7MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2023-11-19 07:48:04,071 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 109.1MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:04,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.80ms. Allocated memory is still 138.4MB. Free memory was 93.8MB in the beginning and 84.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:48:04,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.50ms. Allocated memory is still 138.4MB. Free memory was 84.2MB in the beginning and 82.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:48:04,073 INFO L158 Benchmark]: Boogie Preprocessor took 34.15ms. Allocated memory is still 138.4MB. Free memory was 82.7MB in the beginning and 81.8MB in the end (delta: 933.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:04,073 INFO L158 Benchmark]: RCFGBuilder took 299.37ms. Allocated memory is still 138.4MB. Free memory was 81.8MB in the beginning and 72.8MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:48:04,074 INFO L158 Benchmark]: BuchiAutomizer took 1571.01ms. Allocated memory is still 138.4MB. Free memory was 72.8MB in the beginning and 60.6MB in the end (delta: 12.2MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2023-11-19 07:48:04,075 INFO L158 Benchmark]: Witness Printer took 4.47ms. Allocated memory is still 138.4MB. Free memory was 60.6MB in the beginning and 60.1MB in the end (delta: 551.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:04,078 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 109.1MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.80ms. Allocated memory is still 138.4MB. Free memory was 93.8MB in the beginning and 84.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.50ms. Allocated memory is still 138.4MB. Free memory was 84.2MB in the beginning and 82.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.15ms. Allocated memory is still 138.4MB. Free memory was 82.7MB in the beginning and 81.8MB in the end (delta: 933.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 299.37ms. Allocated memory is still 138.4MB. Free memory was 81.8MB in the beginning and 72.8MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1571.01ms. Allocated memory is still 138.4MB. Free memory was 72.8MB in the beginning and 60.6MB in the end (delta: 12.2MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Witness Printer took 4.47ms. Allocated memory is still 138.4MB. Free memory was 60.6MB in the beginning and 60.1MB in the end (delta: 551.1kB). 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic) and one module whose termination is unknown.One deterministic module has affine ranking function x and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 3 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 18 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq170 hnf94 smp100 dnf137 smp100 tf109 neg100 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 100ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Unable to decide termination Buchi Automizer cannot decide termination for the following lasso because it contains the following overapproximations. Overapproximations C: y|(y+1) [21] (Reason bitwiseOr) Lasso Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0;" "assume !!(main_~x~0#1 > 0);" "assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;" Loop: "assume !(0 == main_~y~0#1 || main_~y~0#1 == 1 + main_~y~0#1);" "assume !(0 == 1 + main_~y~0#1);assume (main_~y~0#1 < 0 && 1 + main_~y~0#1 >= 0) || main_#t~nondet1#1 >= 1 + main_~y~0#1;assume (main_~y~0#1 >= 0 && 1 + main_~y~0#1 < 0) || main_#t~nondet1#1 >= main_~y~0#1;assume (main_~y~0#1 < 0 || 1 + main_~y~0#1 < 0) || main_#t~nondet1#1 <= main_~y~0#1 + (1 + main_~y~0#1);assume (main_~y~0#1 >= 0 && 1 + main_~y~0#1 >= 0) || main_#t~nondet1#1 < 0;assume main_#t~nondet1#1 <= 2147483647;" "main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;" RESULT: Ultimate could not prove your program: unable to determine termination [2023-11-19 07:48:04,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:04,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/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 Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66d7c3-c152-4e34-9ef2-91b1de0cc8ec/bin/uautomizer-verify-uCwYo4JHxu/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN