./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/xor-01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/xor-01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R --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 6748276207b055f086b7e803489fe8020fc54faaccf8e7b513ddf6b7ff856d91 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:21:47,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:21:47,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:21:47,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:21:47,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:21:47,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:21:47,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:21:47,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:21:47,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:21:47,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:21:47,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:21:47,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:21:47,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:21:47,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:21:47,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:21:47,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:21:47,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:21:47,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:21:47,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:21:47,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:21:47,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:21:47,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:21:47,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:21:47,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:21:47,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:21:47,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:21:47,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:21:47,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:21:47,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:21:47,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:21:47,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:21:47,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:21:47,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:21:47,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:21:47,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:21:47,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:21:47,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:21:47,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:21:47,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:21:47,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:21:47,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:21:47,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-25 17:21:47,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:21:47,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:21:47,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:21:47,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:21:47,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:21:47,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:21:47,655 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:21:47,655 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 17:21:47,655 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 17:21:47,655 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 17:21:47,655 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 17:21:47,656 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 17:21:47,656 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 17:21:47,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:21:47,656 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:21:47,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:21:47,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:21:47,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 17:21:47,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 17:21:47,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 17:21:47,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:21:47,658 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 17:21:47,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:21:47,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 17:21:47,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:21:47,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:21:47,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:21:47,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:21:47,660 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 17:21:47,660 INFO L138 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_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6748276207b055f086b7e803489fe8020fc54faaccf8e7b513ddf6b7ff856d91 [2022-11-25 17:21:47,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:21:47,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:21:47,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:21:47,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:21:47,960 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:21:47,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-bwb/xor-01.c [2022-11-25 17:21:51,041 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:21:51,263 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:21:51,264 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/sv-benchmarks/c/termination-bwb/xor-01.c [2022-11-25 17:21:51,272 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/data/7c28e8728/582b18bfddc34accbf88fd61b5552b47/FLAGebf681b75 [2022-11-25 17:21:51,289 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/data/7c28e8728/582b18bfddc34accbf88fd61b5552b47 [2022-11-25 17:21:51,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:21:51,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:21:51,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:21:51,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:21:51,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:21:51,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a443ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51, skipping insertion in model container [2022-11-25 17:21:51,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:21:51,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:21:51,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:21:51,530 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:21:51,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:21:51,555 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:21:51,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51 WrapperNode [2022-11-25 17:21:51,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:21:51,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:21:51,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:21:51,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:21:51,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,590 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2022-11-25 17:21:51,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:21:51,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:21:51,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:21:51,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:21:51,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,611 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:21:51,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:21:51,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:21:51,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:21:51,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (1/1) ... [2022-11-25 17:21:51,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:51,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:51,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:51,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 17:21:51,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:21:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:21:51,783 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:21:51,786 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:21:51,912 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:21:51,921 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:21:51,922 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 17:21:51,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:21:51 BoogieIcfgContainer [2022-11-25 17:21:51,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:21:51,926 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 17:21:51,926 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 17:21:51,931 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 17:21:51,933 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:21:51,933 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 05:21:51" (1/3) ... [2022-11-25 17:21:51,935 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4efd2b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:21:51, skipping insertion in model container [2022-11-25 17:21:51,935 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:21:51,935 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:51" (2/3) ... [2022-11-25 17:21:51,938 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4efd2b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:21:51, skipping insertion in model container [2022-11-25 17:21:51,938 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:21:51,938 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:21:51" (3/3) ... [2022-11-25 17:21:51,940 INFO L332 chiAutomizerObserver]: Analyzing ICFG xor-01.c [2022-11-25 17:21:52,025 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 17:21:52,026 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 17:21:52,026 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 17:21:52,026 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 17:21:52,026 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 17:21:52,026 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 17:21:52,026 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 17:21:52,027 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 17:21:52,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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) [2022-11-25 17:21:52,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-25 17:21:52,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:21:52,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:21:52,062 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 17:21:52,062 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-25 17:21:52,062 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 17:21:52,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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) [2022-11-25 17:21:52,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-25 17:21:52,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:21:52,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:21:52,064 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 17:21:52,064 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-25 17:21:52,071 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#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_~a~0#1, main_~b~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := 0; 6#L18-2true [2022-11-25 17:21:52,071 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 > 0); 4#L18true assume !(main_~a~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - 1; 6#L18-2true [2022-11-25 17:21:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-25 17:21:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:52,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512943070] [2022-11-25 17:21:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:52,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:52,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:21:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:52,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:21:52,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1335, now seen corresponding path program 1 times [2022-11-25 17:21:52,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:52,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886271499] [2022-11-25 17:21:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:52,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:52,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:21:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:52,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:21:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:52,211 INFO L85 PathProgramCache]: Analyzing trace with hash 925817, now seen corresponding path program 1 times [2022-11-25 17:21:52,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:52,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081836781] [2022-11-25 17:21:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:52,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:52,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:21:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:52,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:21:52,304 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:21:52,305 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:21:52,305 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:21:52,305 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:21:52,305 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:21:52,305 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:52,306 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:21:52,306 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:21:52,306 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration1_Loop [2022-11-25 17:21:52,306 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:21:52,306 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:21:52,331 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:21:52,347 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:21:52,395 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:21:52,396 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:21:52,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:52,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:52,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:52,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:21:52,417 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:21:52,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-25 17:21:52,471 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:21:52,471 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=-1} Honda state: {ULTIMATE.start_main_~a~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:21:52,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:52,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:52,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:52,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:52,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:21:52,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:21:52,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-25 17:21:52,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:52,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:52,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:52,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:52,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-25 17:21:52,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:21:52,544 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:21:52,589 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 17:21:52,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:52,594 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:21:52,594 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:21:52,594 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:21:52,594 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:21:52,594 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 17:21:52,595 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:52,595 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:21:52,595 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:21:52,595 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration1_Loop [2022-11-25 17:21:52,595 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:21:52,595 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:21:52,597 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:21:52,603 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:21:52,642 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:21:52,647 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 17:21:52,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:52,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:52,650 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:52,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-25 17:21:52,660 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 [2022-11-25 17:21:52,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:21:52,672 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:21:52,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:21:52,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:21:52,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:21:52,676 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:21:52,676 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:21:52,688 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:21:52,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:52,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:52,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:52,697 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:52,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-25 17:21:52,701 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 [2022-11-25 17:21:52,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:21:52,712 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:21:52,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:21:52,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:21:52,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:21:52,714 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:21:52,714 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:21:52,727 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 17:21:52,734 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 17:21:52,735 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 17:21:52,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:52,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:52,780 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:52,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-25 17:21:52,782 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 17:21:52,782 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 17:21:52,783 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 17:21:52,783 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-25 17:21:52,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:52,795 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 17:21:52,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:52,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:21:52,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:52,865 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:21:52,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:52,925 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-25 17:21:52,927 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:52,975 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 38 states and 55 transitions. Complement of second has 8 states. [2022-11-25 17:21:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-25 17:21:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-11-25 17:21:52,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-25 17:21:52,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:21:52,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-25 17:21:52,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:21:52,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-25 17:21:52,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:21:52,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 55 transitions. [2022-11-25 17:21:53,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-25 17:21:53,013 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 14 states and 20 transitions. [2022-11-25 17:21:53,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-11-25 17:21:53,015 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-11-25 17:21:53,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-11-25 17:21:53,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:21:53,016 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-11-25 17:21:53,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-11-25 17:21:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-25 17:21:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 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) [2022-11-25 17:21:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-11-25 17:21:53,053 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-25 17:21:53,053 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-25 17:21:53,053 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-25 17:21:53,054 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-11-25 17:21:53,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-25 17:21:53,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:21:53,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:21:53,060 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-25 17:21:53,061 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 17:21:53,061 INFO L748 eck$LassoCheckResult]: Stem: 93#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 94#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_~a~0#1, main_~b~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := 0; 100#L18-2 assume !!(main_~x~0#1 > 0); 89#L18 assume main_~a~0#1 >= 0; 90#L20 main_#t~nondet2#1 := 1; 98#L20-6 [2022-11-25 17:21:53,062 INFO L750 eck$LassoCheckResult]: Loop: 98#L20-6 main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 95#L18-2 assume !!(main_~x~0#1 > 0); 96#L18 assume main_~a~0#1 >= 0; 101#L20 main_#t~nondet2#1 := 1; 98#L20-6 [2022-11-25 17:21:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:53,069 INFO L85 PathProgramCache]: Analyzing trace with hash 28699755, now seen corresponding path program 1 times [2022-11-25 17:21:53,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:53,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690395102] [2022-11-25 17:21:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:53,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:53,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:21:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:53,094 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:21:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:53,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1858064, now seen corresponding path program 1 times [2022-11-25 17:21:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:53,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311094533] [2022-11-25 17:21:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:53,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:53,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:21:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:53,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:21:53,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:53,131 INFO L85 PathProgramCache]: Analyzing trace with hash 584188282, now seen corresponding path program 1 times [2022-11-25 17:21:53,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:53,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022605625] [2022-11-25 17:21:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:53,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:21:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:53,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:21:53,212 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:21:53,212 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:21:53,213 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:21:53,213 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:21:53,213 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:21:53,213 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:53,213 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:21:53,213 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:21:53,214 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration2_Loop [2022-11-25 17:21:53,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:21:53,214 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:21:53,228 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:21:53,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-11-25 17:21:53,305 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:21:53,305 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:21:53,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:53,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:53,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:53,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:21:53,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:21:53,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-25 17:21:53,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-11-25 17:21:53,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:53,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:53,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:53,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:21:53,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:21:53,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-25 17:21:54,659 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 17:21:54,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-25 17:21:54,663 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:21:54,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:21:54,664 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:21:54,664 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:21:54,664 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 17:21:54,664 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:54,664 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:21:54,664 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:21:54,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration2_Loop [2022-11-25 17:21:54,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:21:54,665 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:21:54,666 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:21:54,722 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:21:54,722 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 17:21:54,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:54,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:54,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:54,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-25 17:21:54,740 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 [2022-11-25 17:21:54,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:21:54,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:21:54,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:21:54,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:21:54,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:21:54,755 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:21:54,756 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:21:54,766 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 17:21:54,771 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 17:21:54,771 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 17:21:54,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:54,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:54,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:54,788 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 17:21:54,789 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 17:21:54,789 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 17:21:54,789 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_#t~nondet2#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_#t~nondet2#1 Supporting invariants [] [2022-11-25 17:21:54,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:54,802 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 17:21:54,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-25 17:21:54,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:54,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:21:54,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:54,854 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:21:54,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:54,921 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 [2022-11-25 17:21:54,921 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,942 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 32 transitions. Complement of second has 7 states. [2022-11-25 17:21:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-25 17:21:54,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2022-11-25 17:21:54,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 4 letters. [2022-11-25 17:21:54,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:21:54,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 9 letters. Loop has 4 letters. [2022-11-25 17:21:54,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:21:54,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 8 letters. [2022-11-25 17:21:54,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:21:54,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 32 transitions. [2022-11-25 17:21:54,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-25 17:21:54,947 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 20 transitions. [2022-11-25 17:21:54,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-25 17:21:54,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-25 17:21:54,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2022-11-25 17:21:54,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:21:54,947 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-11-25 17:21:54,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2022-11-25 17:21:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-11-25 17:21:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 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) [2022-11-25 17:21:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2022-11-25 17:21:54,949 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-11-25 17:21:54,949 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-11-25 17:21:54,950 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-25 17:21:54,950 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2022-11-25 17:21:54,950 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-25 17:21:54,950 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:21:54,951 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:21:54,951 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:21:54,951 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-25 17:21:54,951 INFO L748 eck$LassoCheckResult]: Stem: 179#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 180#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_~a~0#1, main_~b~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := 0; 182#L18-2 assume !!(main_~x~0#1 > 0); 181#L18 assume main_~a~0#1 >= 0; 183#L20 main_#t~nondet2#1 := 1; 184#L20-6 main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 176#L18-2 [2022-11-25 17:21:54,951 INFO L750 eck$LassoCheckResult]: Loop: 176#L18-2 assume !!(main_~x~0#1 > 0); 175#L18 assume !(main_~a~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - 1; 176#L18-2 [2022-11-25 17:21:54,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:54,952 INFO L85 PathProgramCache]: Analyzing trace with hash 889692436, now seen corresponding path program 2 times [2022-11-25 17:21:54,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:54,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793825949] [2022-11-25 17:21:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:54,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:54,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:21:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:54,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:21:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1335, now seen corresponding path program 2 times [2022-11-25 17:21:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:54,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146945481] [2022-11-25 17:21:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:54,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:54,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:21:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:21:54,970 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:21:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash 295939466, now seen corresponding path program 1 times [2022-11-25 17:21:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:54,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879236703] [2022-11-25 17:21:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:55,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:55,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879236703] [2022-11-25 17:21:55,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879236703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:55,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:55,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:21:55,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416463531] [2022-11-25 17:21:55,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:55,059 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:21:55,059 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:21:55,059 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:21:55,059 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:21:55,059 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:21:55,059 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:55,060 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:21:55,060 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:21:55,060 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration3_Loop [2022-11-25 17:21:55,060 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:21:55,060 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:21:55,061 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:21:55,067 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:21:55,088 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:21:55,089 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:21:55,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:55,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:55,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:55,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:21:55,105 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:21:55,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-25 17:21:55,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:55,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:55,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:55,145 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:55,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-25 17:21:55,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:21:55,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:21:55,186 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 17:21:55,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:55,196 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:21:55,196 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:21:55,196 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:21:55,196 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:21:55,196 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 17:21:55,196 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:55,196 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:21:55,196 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:21:55,196 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration3_Loop [2022-11-25 17:21:55,196 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:21:55,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:21:55,197 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:21:55,210 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 17:21:55,233 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:21:55,234 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 17:21:55,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:55,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:55,235 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:55,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-25 17:21:55,252 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 [2022-11-25 17:21:55,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:21:55,264 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:21:55,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:21:55,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:21:55,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:21:55,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:21:55,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:21:55,291 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 17:21:55,295 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 17:21:55,295 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 17:21:55,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:21:55,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:55,303 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:55,311 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 17:21:55,311 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 17:21:55,311 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 17:21:55,311 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-25 17:21:55,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-25 17:21:55,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:55,317 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 17:21:55,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:55,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:21:55,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:55,352 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:21:55,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:55,368 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-25 17:21:55,368 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 19 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-25 17:21:55,382 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 19 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 25 states and 33 transitions. Complement of second has 5 states. [2022-11-25 17:21:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-25 17:21:55,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-25 17:21:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2022-11-25 17:21:55,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-25 17:21:55,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:21:55,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2022-11-25 17:21:55,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:21:55,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-25 17:21:55,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:21:55,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 33 transitions. [2022-11-25 17:21:55,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-25 17:21:55,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 25 transitions. [2022-11-25 17:21:55,386 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-25 17:21:55,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-25 17:21:55,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2022-11-25 17:21:55,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:21:55,387 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-25 17:21:55,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2022-11-25 17:21:55,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-25 17:21:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 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) [2022-11-25 17:21:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-11-25 17:21:55,389 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-11-25 17:21:55,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:55,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:21:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:21:55,393 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-11-25 17:21:55,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:21:55,418 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-25 17:21:55,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2022-11-25 17:21:55,419 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 17:21:55,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2022-11-25 17:21:55,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-25 17:21:55,419 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-25 17:21:55,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-25 17:21:55,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:55,419 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:21:55,420 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:21:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:21:55,421 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:21:55,421 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-25 17:21:55,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-25 17:21:55,421 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 17:21:55,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-25 17:21:55,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 05:21:55 BoogieIcfgContainer [2022-11-25 17:21:55,429 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 17:21:55,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:21:55,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:21:55,430 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:21:55,430 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:21:51" (3/4) ... [2022-11-25 17:21:55,433 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:21:55,433 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:21:55,434 INFO L158 Benchmark]: Toolchain (without parser) took 4136.44ms. Allocated memory is still 148.9MB. Free memory was 114.4MB in the beginning and 81.1MB in the end (delta: 33.3MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2022-11-25 17:21:55,434 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 121.6MB. Free memory was 90.0MB in the beginning and 89.9MB in the end (delta: 70.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:21:55,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.79ms. Allocated memory is still 148.9MB. Free memory was 113.7MB in the beginning and 113.4MB in the end (delta: 320.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:21:55,435 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.16ms. Allocated memory is still 148.9MB. Free memory was 113.4MB in the beginning and 112.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:21:55,436 INFO L158 Benchmark]: Boogie Preprocessor took 21.98ms. Allocated memory is still 148.9MB. Free memory was 112.1MB in the beginning and 111.3MB in the end (delta: 802.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:21:55,436 INFO L158 Benchmark]: RCFGBuilder took 310.28ms. Allocated memory is still 148.9MB. Free memory was 111.3MB in the beginning and 102.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 17:21:55,436 INFO L158 Benchmark]: BuchiAutomizer took 3503.06ms. Allocated memory is still 148.9MB. Free memory was 102.3MB in the beginning and 81.2MB in the end (delta: 21.0MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-11-25 17:21:55,437 INFO L158 Benchmark]: Witness Printer took 3.88ms. Allocated memory is still 148.9MB. Free memory was 81.2MB in the beginning and 81.1MB in the end (delta: 102.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:21:55,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87ms. Allocated memory is still 121.6MB. Free memory was 90.0MB in the beginning and 89.9MB in the end (delta: 70.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.79ms. Allocated memory is still 148.9MB. Free memory was 113.7MB in the beginning and 113.4MB in the end (delta: 320.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.16ms. Allocated memory is still 148.9MB. Free memory was 113.4MB in the beginning and 112.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.98ms. Allocated memory is still 148.9MB. Free memory was 112.1MB in the beginning and 111.3MB in the end (delta: 802.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 310.28ms. Allocated memory is still 148.9MB. Free memory was 111.3MB in the beginning and 102.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3503.06ms. Allocated memory is still 148.9MB. Free memory was 102.3MB in the beginning and 81.2MB in the end (delta: 21.0MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * Witness Printer took 3.88ms. Allocated memory is still 148.9MB. Free memory was 81.2MB in the beginning and 81.1MB in the end (delta: 102.3kB). 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, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x + -1 * aux-a = 0^1-aux and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 32 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp80 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf92 smp100 dnf100 smp100 tf111 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-25 17:21:55,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:55,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:55,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bee844-91db-45ba-ae0d-52b8bd9be188/bin/uautomizer-ZsLfNo2U6R/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