./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/parity0.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b 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_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/parity0.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 1708189d114fc991c7d8cbd3a7ecd0f04bc3d73251a9b81e9ba9fc25d8cf6990 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:15:33,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:15:33,764 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 21:15:33,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:15:33,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:15:33,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:15:33,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:15:33,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:15:33,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:15:33,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:15:33,836 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:15:33,837 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 21:15:33,838 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 21:15:33,840 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 21:15:33,841 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 21:15:33,841 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 21:15:33,842 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 21:15:33,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:15:33,844 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 21:15:33,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:15:33,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:15:33,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 21:15:33,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 21:15:33,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 21:15:33,849 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:15:33,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:15:33,850 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 21:15:33,851 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:15:33,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:15:33,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:15:33,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:15:33,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:15:33,854 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 21:15:33,854 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_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1708189d114fc991c7d8cbd3a7ecd0f04bc3d73251a9b81e9ba9fc25d8cf6990 [2023-11-06 21:15:34,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:15:34,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:15:34,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:15:34,309 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:15:34,310 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:15:34,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-bwb/parity0.i [2023-11-06 21:15:37,738 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:15:38,038 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:15:38,039 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/sv-benchmarks/c/termination-bwb/parity0.i [2023-11-06 21:15:38,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/data/018cc44e8/4b49fc12d12e429eb0ca2963c79e7cad/FLAG5b6b4db4b [2023-11-06 21:15:38,066 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/data/018cc44e8/4b49fc12d12e429eb0ca2963c79e7cad [2023-11-06 21:15:38,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:15:38,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:15:38,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:15:38,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:15:38,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:15:38,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5413e2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38, skipping insertion in model container [2023-11-06 21:15:38,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,116 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:15:38,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:15:38,344 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:15:38,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:15:38,385 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:15:38,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38 WrapperNode [2023-11-06 21:15:38,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:15:38,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:15:38,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:15:38,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:15:38,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,428 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2023-11-06 21:15:38,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:15:38,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:15:38,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:15:38,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:15:38,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,468 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:15:38,469 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:15:38,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:15:38,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:15:38,471 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (1/1) ... [2023-11-06 21:15:38,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:38,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:38,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:38,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 21:15:38,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:15:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:15:38,634 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:15:38,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:15:38,762 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:15:38,769 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:15:38,769 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:15:38,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:38 BoogieIcfgContainer [2023-11-06 21:15:38,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:15:38,773 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 21:15:38,774 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 21:15:38,778 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 21:15:38,779 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 21:15:38,780 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 09:15:38" (1/3) ... [2023-11-06 21:15:38,781 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50cb4be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 09:15:38, skipping insertion in model container [2023-11-06 21:15:38,781 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 21:15:38,782 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:38" (2/3) ... [2023-11-06 21:15:38,782 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50cb4be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 09:15:38, skipping insertion in model container [2023-11-06 21:15:38,783 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 21:15:38,783 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:38" (3/3) ... [2023-11-06 21:15:38,785 INFO L332 chiAutomizerObserver]: Analyzing ICFG parity0.i [2023-11-06 21:15:38,855 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 21:15:38,856 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 21:15:38,856 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 21:15:38,856 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 21:15:38,857 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 21:15:38,857 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 21:15:38,857 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 21:15:38,858 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 21:15:38,864 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) [2023-11-06 21:15:38,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 21:15:38,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:15:38,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:15:38,895 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 21:15:38,895 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 21:15:38,896 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 21:15:38,896 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) [2023-11-06 21:15:38,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 21:15:38,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:15:38,899 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:15:38,899 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 21:15:38,899 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 21:15:38,910 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;~v~0 := 0;~y~0 := 0;~parity~0 := 0; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~z~0#1.base, main_~z~0#1.offset;havoc main_~z~0#1.base, main_~z~0#1.offset;main_~z~0#1.base, main_~z~0#1.offset := 0, 0;~parity~0 := 0;havoc main_#t~nondet0#1;~y~0 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;~v~0 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L13-2true [2023-11-06 21:15:38,910 INFO L750 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(~v~0 > 0);~parity~0 := 1 - ~parity~0; 2#L16true assume 0 == ~v~0 || 0 == ~v~0 - 1;main_#t~nondet2#1 := 0; 10#L16-4true ~v~0 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 6#L13-2true [2023-11-06 21:15:38,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 21:15:38,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:38,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132589617] [2023-11-06 21:15:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:38,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:39,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:39,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:39,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:39,056 INFO L85 PathProgramCache]: Analyzing trace with hash 40819, now seen corresponding path program 1 times [2023-11-06 21:15:39,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:39,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604115418] [2023-11-06 21:15:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:39,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:39,075 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:39,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:39,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:39,086 INFO L85 PathProgramCache]: Analyzing trace with hash 28699761, now seen corresponding path program 1 times [2023-11-06 21:15:39,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:39,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27617360] [2023-11-06 21:15:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:39,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:39,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:39,118 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:39,307 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:15:39,308 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:15:39,308 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:15:39,309 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:15:39,309 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 21:15:39,309 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:39,309 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:15:39,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:15:39,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: parity0.i_Iteration1_Loop [2023-11-06 21:15:39,311 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:15:39,311 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:15:39,329 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:39,344 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:39,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:39,410 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:15:39,411 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 21:15:39,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:39,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:39,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:39,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:15:39,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:39,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 21:15:39,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:39,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:39,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:39,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:39,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 21:15:39,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 21:15:39,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:39,540 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 21:15:39,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:39,544 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:15:39,544 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:15:39,544 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:15:39,544 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:15:39,545 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 21:15:39,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:39,545 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:15:39,545 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:15:39,545 INFO L133 ssoRankerPreferences]: Filename of dumped script: parity0.i_Iteration1_Loop [2023-11-06 21:15:39,545 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:15:39,546 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:15:39,548 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:39,554 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:39,558 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:39,655 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:15:39,660 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 21:15:39,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:39,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:39,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:39,677 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 [2023-11-06 21:15:39,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 21:15:39,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:39,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:15:39,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:39,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:39,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:39,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:15:39,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:15:39,742 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 21:15:39,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:39,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:39,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:39,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:39,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 21:15:39,765 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 [2023-11-06 21:15:39,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:39,782 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:15:39,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:39,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:39,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:39,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:15:39,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:15:39,803 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 21:15:39,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:39,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:39,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:39,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:39,822 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 [2023-11-06 21:15:39,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 21:15:39,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:39,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:15:39,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:39,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:39,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:39,842 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:15:39,843 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:15:39,855 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 21:15:39,861 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 21:15:39,862 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 21:15:39,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:39,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:39,894 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:39,907 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 21:15:39,908 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 21:15:39,908 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 21:15:39,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 21:15:39,910 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(~v~0) = 1*~v~0 Supporting invariants [] [2023-11-06 21:15:39,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:39,918 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 21:15:39,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:39,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:15:39,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:39,988 WARN L260 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:15:39,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:40,117 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-06 21:15:40,119 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:40,300 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 63 transitions. Complement of second has 11 states. [2023-11-06 21:15:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-06 21:15:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 39 transitions. [2023-11-06 21:15:40,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 39 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-06 21:15:40,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:40,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 39 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-06 21:15:40,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:40,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 39 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-06 21:15:40,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:40,321 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 63 transitions. [2023-11-06 21:15:40,330 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 21:15:40,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 19 states and 23 transitions. [2023-11-06 21:15:40,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-11-06 21:15:40,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-06 21:15:40,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2023-11-06 21:15:40,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 21:15:40,340 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-11-06 21:15:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2023-11-06 21:15:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2023-11-06 21:15:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) [2023-11-06 21:15:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-11-06 21:15:40,379 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-11-06 21:15:40,379 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-11-06 21:15:40,380 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 21:15:40,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2023-11-06 21:15:40,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 21:15:40,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:15:40,383 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:15:40,383 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 21:15:40,383 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 21:15:40,384 INFO L748 eck$LassoCheckResult]: Stem: 111#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;~v~0 := 0;~y~0 := 0;~parity~0 := 0; 112#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_#t~nondet2#1, main_~z~0#1.base, main_~z~0#1.offset;havoc main_~z~0#1.base, main_~z~0#1.offset;main_~z~0#1.base, main_~z~0#1.offset := 0, 0;~parity~0 := 0;havoc main_#t~nondet0#1;~y~0 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;~v~0 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 114#L13-2 assume !!(~v~0 > 0);~parity~0 := 1 - ~parity~0; 102#L16 [2023-11-06 21:15:40,384 INFO L750 eck$LassoCheckResult]: Loop: 102#L16 assume !(0 == ~v~0 || 0 == ~v~0 - 1); 103#L16-2 assume !(~v~0 == ~v~0 - 1);assume (~v~0 < 0 && ~v~0 - 1 >= 0) || main_#t~nondet2#1 <= ~v~0;assume (~v~0 >= 0 && ~v~0 - 1 < 0) || main_#t~nondet2#1 <= ~v~0 - 1;assume (~v~0 < 0 && ~v~0 - 1 < 0) || main_#t~nondet2#1 >= 0;assume (~v~0 >= 0 && ~v~0 - 1 >= 0) || main_#t~nondet2#1 > ~v~0 + (~v~0 - 1);assume main_#t~nondet2#1 >= -2147483648; 109#L16-4 ~v~0 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 107#L13-2 assume !!(~v~0 > 0);~parity~0 := 1 - ~parity~0; 102#L16 [2023-11-06 21:15:40,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:40,392 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-06 21:15:40,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:40,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951553831] [2023-11-06 21:15:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:40,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:40,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:40,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:40,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:40,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1421082, now seen corresponding path program 1 times [2023-11-06 21:15:40,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:40,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24328079] [2023-11-06 21:15:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:40,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:40,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:40,483 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:40,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:40,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724929, now seen corresponding path program 1 times [2023-11-06 21:15:40,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:40,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565367331] [2023-11-06 21:15:40,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:40,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:40,533 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:40,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:40,672 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:15:40,672 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:15:40,672 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:15:40,673 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:15:40,673 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 21:15:40,674 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:40,674 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:15:40,674 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:15:40,674 INFO L133 ssoRankerPreferences]: Filename of dumped script: parity0.i_Iteration2_Loop [2023-11-06 21:15:40,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:15:40,675 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:15:40,680 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:40,686 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:40,736 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:15:40,736 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 21:15:40,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:40,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:40,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:40,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:15:40,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:40,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 21:15:40,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:40,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:40,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:40,789 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:40,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 21:15:40,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:40,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 21:15:40,896 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 21:15:40,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:40,907 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:15:40,907 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:15:40,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:15:40,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:15:40,908 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 21:15:40,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:40,908 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:15:40,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:15:40,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: parity0.i_Iteration2_Loop [2023-11-06 21:15:40,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:15:40,909 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:15:40,911 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:40,918 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:40,969 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:15:40,970 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 21:15:40,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:40,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:40,972 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:40,981 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 [2023-11-06 21:15:40,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 21:15:40,995 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:40,995 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:15:40,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:40,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:40,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:41,003 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:15:41,003 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:15:41,027 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 21:15:41,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:41,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:41,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:41,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:41,049 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 [2023-11-06 21:15:41,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 21:15:41,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:41,064 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:15:41,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:41,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:41,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:41,067 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:15:41,068 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:15:41,083 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 21:15:41,111 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 21:15:41,112 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 21:15:41,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:41,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:41,116 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:41,132 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 21:15:41,132 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 21:15:41,132 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 21:15:41,133 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(~v~0) = 1*~v~0 Supporting invariants [] [2023-11-06 21:15:41,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 21:15:41,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:41,145 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 21:15:41,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:41,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:15:41,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:41,197 WARN L260 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:15:41,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:41,417 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2023-11-06 21:15:41,417 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2023-11-06 21:15:41,606 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 30 states and 35 transitions. Complement of second has 11 states. [2023-11-06 21:15:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-06 21:15:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2023-11-06 21:15:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2023-11-06 21:15:41,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 8 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-06 21:15:41,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:41,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 8 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-06 21:15:41,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:41,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 8 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-06 21:15:41,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:41,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 35 transitions. [2023-11-06 21:15:41,618 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 21:15:41,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 18 states and 21 transitions. [2023-11-06 21:15:41,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-11-06 21:15:41,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-11-06 21:15:41,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2023-11-06 21:15:41,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 21:15:41,621 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-11-06 21:15:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2023-11-06 21:15:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2023-11-06 21:15:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-11-06 21:15:41,629 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-06 21:15:41,630 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-06 21:15:41,630 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 21:15:41,630 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2023-11-06 21:15:41,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 21:15:41,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:15:41,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:15:41,633 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2023-11-06 21:15:41,633 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 21:15:41,633 INFO L748 eck$LassoCheckResult]: Stem: 207#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;~v~0 := 0;~y~0 := 0;~parity~0 := 0; 208#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~z~0#1.base, main_~z~0#1.offset;havoc main_~z~0#1.base, main_~z~0#1.offset;main_~z~0#1.base, main_~z~0#1.offset := 0, 0;~parity~0 := 0;havoc main_#t~nondet0#1;~y~0 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;~v~0 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 203#L13-2 assume !!(~v~0 > 0);~parity~0 := 1 - ~parity~0; 200#L16 assume 0 == ~v~0 || 0 == ~v~0 - 1;main_#t~nondet2#1 := 0; 202#L16-4 ~v~0 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 210#L13-2 assume !!(~v~0 > 0);~parity~0 := 1 - ~parity~0; 198#L16 [2023-11-06 21:15:41,634 INFO L750 eck$LassoCheckResult]: Loop: 198#L16 assume !(0 == ~v~0 || 0 == ~v~0 - 1); 199#L16-2 assume !(~v~0 == ~v~0 - 1);assume (~v~0 < 0 && ~v~0 - 1 >= 0) || main_#t~nondet2#1 <= ~v~0;assume (~v~0 >= 0 && ~v~0 - 1 < 0) || main_#t~nondet2#1 <= ~v~0 - 1;assume (~v~0 < 0 && ~v~0 - 1 < 0) || main_#t~nondet2#1 >= 0;assume (~v~0 >= 0 && ~v~0 - 1 >= 0) || main_#t~nondet2#1 > ~v~0 + (~v~0 - 1);assume main_#t~nondet2#1 >= -2147483648; 205#L16-4 ~v~0 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 209#L13-2 assume !!(~v~0 > 0);~parity~0 := 1 - ~parity~0; 198#L16 [2023-11-06 21:15:41,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:41,635 INFO L85 PathProgramCache]: Analyzing trace with hash 889692602, now seen corresponding path program 2 times [2023-11-06 21:15:41,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:41,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721981857] [2023-11-06 21:15:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:41,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:41,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721981857] [2023-11-06 21:15:41,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721981857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:41,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:41,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:15:41,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330533236] [2023-11-06 21:15:41,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:41,738 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 21:15:41,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1421082, now seen corresponding path program 2 times [2023-11-06 21:15:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777647888] [2023-11-06 21:15:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:41,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:41,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:41,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:41,897 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:15:41,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:15:41,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:15:41,898 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:15:41,898 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 21:15:41,898 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:41,898 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:15:41,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:15:41,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: parity0.i_Iteration3_Loop [2023-11-06 21:15:41,899 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:15:41,899 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:15:41,900 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:41,905 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:41,961 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:15:41,961 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 21:15:41,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:41,967 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:41,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:15:41,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:41,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 21:15:42,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:42,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:42,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:42,011 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:42,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 21:15:42,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:42,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 21:15:42,113 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 21:15:42,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:42,120 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:15:42,120 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:15:42,120 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:15:42,120 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:15:42,120 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 21:15:42,120 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:42,120 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:15:42,121 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:15:42,121 INFO L133 ssoRankerPreferences]: Filename of dumped script: parity0.i_Iteration3_Loop [2023-11-06 21:15:42,121 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:15:42,121 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:15:42,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:42,136 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:42,186 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:15:42,186 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 21:15:42,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:42,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:42,189 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:42,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 21:15:42,201 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 [2023-11-06 21:15:42,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:42,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:15:42,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:42,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:42,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:42,219 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:15:42,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:15:42,229 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 21:15:42,233 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 21:15:42,233 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 21:15:42,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:42,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:42,239 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:42,241 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 21:15:42,241 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 21:15:42,241 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 21:15:42,241 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(~v~0) = 1*~v~0 Supporting invariants [] [2023-11-06 21:15:42,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 21:15:42,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:42,253 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 21:15:42,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:42,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:15:42,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:42,310 WARN L260 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:15:42,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:42,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:42,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-11-06 21:15:42,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:42,509 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2023-11-06 21:15:42,509 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-11-06 21:15:42,631 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 25 transitions. Complement of second has 11 states. [2023-11-06 21:15:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-06 21:15:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-11-06 21:15:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2023-11-06 21:15:42,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-06 21:15:42,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:42,634 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 21:15:42,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:42,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:15:42,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:42,697 WARN L260 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:15:42,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:42,840 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2023-11-06 21:15:42,841 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-11-06 21:15:42,947 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 25 transitions. Complement of second has 11 states. [2023-11-06 21:15:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-06 21:15:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-11-06 21:15:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2023-11-06 21:15:42,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-06 21:15:42,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:42,950 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 21:15:42,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:42,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:15:42,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:42,998 WARN L260 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:15:43,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:43,142 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2023-11-06 21:15:43,142 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-11-06 21:15:43,253 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 24 transitions. Complement of second has 10 states. [2023-11-06 21:15:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-06 21:15:43,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-11-06 21:15:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2023-11-06 21:15:43,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-06 21:15:43,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:43,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 10 letters. Loop has 4 letters. [2023-11-06 21:15:43,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:43,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 6 letters. Loop has 8 letters. [2023-11-06 21:15:43,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:43,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 24 transitions. [2023-11-06 21:15:43,259 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 21:15:43,259 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2023-11-06 21:15:43,259 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 21:15:43,260 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 21:15:43,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 21:15:43,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:43,260 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:15:43,260 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:15:43,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:43,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:15:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:15:43,265 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-11-06 21:15:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:43,269 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-06 21:15:43,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-06 21:15:43,269 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 21:15:43,270 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:15:43,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 21:15:43,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 21:15:43,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 21:15:43,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:43,271 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:15:43,271 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:15:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:15:43,272 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:15:43,272 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 21:15:43,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:15:43,273 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 21:15:43,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 21:15:43,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 09:15:43 BoogieIcfgContainer [2023-11-06 21:15:43,282 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 21:15:43,283 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:15:43,283 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:15:43,283 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:15:43,284 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:38" (3/4) ... [2023-11-06 21:15:43,286 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:15:43,287 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:15:43,288 INFO L158 Benchmark]: Toolchain (without parser) took 5212.70ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 108.0MB in the beginning and 129.9MB in the end (delta: -21.9MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2023-11-06 21:15:43,289 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:15:43,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.88ms. Allocated memory is still 146.8MB. Free memory was 107.6MB in the beginning and 98.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 21:15:43,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.84ms. Allocated memory is still 146.8MB. Free memory was 98.3MB in the beginning and 97.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:15:43,291 INFO L158 Benchmark]: Boogie Preprocessor took 39.18ms. Allocated memory is still 146.8MB. Free memory was 97.1MB in the beginning and 96.2MB in the end (delta: 857.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:15:43,292 INFO L158 Benchmark]: RCFGBuilder took 302.72ms. Allocated memory is still 146.8MB. Free memory was 95.9MB in the beginning and 86.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:15:43,292 INFO L158 Benchmark]: BuchiAutomizer took 4509.12ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 86.6MB in the beginning and 129.9MB in the end (delta: -43.3MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2023-11-06 21:15:43,293 INFO L158 Benchmark]: Witness Printer took 4.59ms. Allocated memory is still 207.6MB. Free memory is still 129.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:15:43,296 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 146.8MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.88ms. Allocated memory is still 146.8MB. Free memory was 107.6MB in the beginning and 98.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.84ms. Allocated memory is still 146.8MB. Free memory was 98.3MB in the beginning and 97.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.18ms. Allocated memory is still 146.8MB. Free memory was 97.1MB in the beginning and 96.2MB in the end (delta: 857.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 302.72ms. Allocated memory is still 146.8MB. Free memory was 95.9MB in the beginning and 86.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 4509.12ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 86.6MB in the beginning and 129.9MB in the end (delta: -43.3MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Witness Printer took 4.59ms. Allocated memory is still 207.6MB. Free memory is still 129.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function v and consists of 7 locations. One deterministic module has affine ranking function v and consists of 6 locations. One nondeterministic module has affine ranking function v and consists of 6 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.4s. Construction of modules took 0.1s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113 IncrementalHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 27 mSDtfsCounter, 113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp68 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf91 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 81ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-06 21:15:43,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b48764-d46b-48e1-98f2-9ae4475c53f2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE