./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.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_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/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_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/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_b14d7de7-1f7b-42f5-a4e0-331fda77800c/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 0d6528b7cc69fe4ab1ae178e84639571fa28bd084493b226ea467e9ac1e22d5f --- 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 17:01:17,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:01:17,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:01:17,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:01:17,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:01:17,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:01:17,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:01:17,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:01:17,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:01:17,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:01:17,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:01:17,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:01:17,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:01:17,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:01:17,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:01:17,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:01:17,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:01:17,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:01:17,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:01:17,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:01:17,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:01:17,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:01:17,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:01:17,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:01:17,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:01:17,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:01:17,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:01:17,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:01:17,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:01:17,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:01:17,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:01:17,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:01:17,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:01:17,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:01:17,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:01:17,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:01:17,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:01:17,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:01:17,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:01:17,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:01:17,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:01:17,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-25 17:01:17,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:01:17,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:01:17,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:01:17,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:01:17,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:01:17,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:01:17,619 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:01:17,619 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 17:01:17,619 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 17:01:17,620 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 17:01:17,636 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 17:01:17,637 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 17:01:17,637 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 17:01:17,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:01:17,638 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:01:17,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:01:17,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:01:17,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 17:01:17,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 17:01:17,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 17:01:17,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:01:17,641 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 17:01:17,641 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:01:17,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 17:01:17,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:01:17,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:01:17,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:01:17,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:01:17,645 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 17:01:17,646 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_b14d7de7-1f7b-42f5-a4e0-331fda77800c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d6528b7cc69fe4ab1ae178e84639571fa28bd084493b226ea467e9ac1e22d5f [2022-11-25 17:01:18,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:01:18,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:01:18,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:01:18,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:01:18,060 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:01:18,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2022-11-25 17:01:21,453 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:01:21,678 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:01:21,679 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2022-11-25 17:01:21,685 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/data/07323f0e2/a6e537eaa4654d9490022af9c634c498/FLAG007b668b0 [2022-11-25 17:01:21,701 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/data/07323f0e2/a6e537eaa4654d9490022af9c634c498 [2022-11-25 17:01:21,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:01:21,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:01:21,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:01:21,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:01:21,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:01:21,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f138a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21, skipping insertion in model container [2022-11-25 17:01:21,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:01:21,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:01:21,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:01:21,913 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:01:21,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:01:21,939 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:01:21,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21 WrapperNode [2022-11-25 17:01:21,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:01:21,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:01:21,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:01:21,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:01:21,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,975 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-25 17:01:21,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:01:21,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:01:21,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:01:21,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:01:21,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:21,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:01:21,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:01:21,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:01:21,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:01:21,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (1/1) ... [2022-11-25 17:01:22,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:22,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:22,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:22,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 17:01:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:01:22,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:01:22,173 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:01:22,179 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:01:22,297 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:01:22,307 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:01:22,308 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:01:22,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:01:22 BoogieIcfgContainer [2022-11-25 17:01:22,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:01:22,313 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 17:01:22,313 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 17:01:22,319 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 17:01:22,320 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:01:22,320 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 05:01:21" (1/3) ... [2022-11-25 17:01:22,322 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e894712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:01:22, skipping insertion in model container [2022-11-25 17:01:22,322 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:01:22,323 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:01:21" (2/3) ... [2022-11-25 17:01:22,325 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e894712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:01:22, skipping insertion in model container [2022-11-25 17:01:22,326 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:01:22,326 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:01:22" (3/3) ... [2022-11-25 17:01:22,328 INFO L332 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2.c [2022-11-25 17:01:22,432 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 17:01:22,433 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 17:01:22,433 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 17:01:22,433 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 17:01:22,434 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 17:01:22,434 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 17:01:22,434 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 17:01:22,434 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 17:01:22,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 17:01:22,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-25 17:01:22,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:01:22,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:01:22,475 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 17:01:22,476 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 17:01:22,476 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 17:01:22,477 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 17:01:22,478 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-25 17:01:22,478 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:01:22,478 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:01:22,479 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 17:01:22,479 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 17:01:22,489 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L17-2true [2022-11-25 17:01:22,489 INFO L750 eck$LassoCheckResult]: Loop: 4#L17-2true assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 2#L19-2true assume !(main_~y~0#1 < main_~x~0#1); 9#L19-3true main_~x~0#1 := main_~x~0#1 - 1; 4#L17-2true [2022-11-25 17:01:22,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-25 17:01:22,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:22,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227909983] [2022-11-25 17:01:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:22,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:22,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:01:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:22,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:01:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:22,661 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2022-11-25 17:01:22,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:22,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719532870] [2022-11-25 17:01:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:22,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:22,700 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:01:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:22,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:01:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:22,732 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2022-11-25 17:01:22,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:22,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610257182] [2022-11-25 17:01:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:22,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:22,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:01:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:22,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:01:22,891 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:01:22,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:01:22,893 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:01:22,893 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:01:22,893 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:01:22,893 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:22,894 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:01:22,894 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:01:22,894 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration1_Loop [2022-11-25 17:01:22,894 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:01:22,895 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:01:22,918 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 17:01:22,933 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 17:01:22,939 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 17:01:23,084 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:01:23,084 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:01:23,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:23,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:23,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:23,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:01:23,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:23,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-25 17:01:23,135 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:01:23,136 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:01:23,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:23,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:23,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:23,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:23,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-25 17:01:23,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:01:23,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:23,189 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:01:23,189 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:01:23,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:23,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:23,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:23,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:23,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-25 17:01:23,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:01:23,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:23,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:23,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:23,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:23,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:23,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-25 17:01:23,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:01:23,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:23,287 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 17:01:23,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:23,293 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:01:23,293 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:01:23,293 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:01:23,293 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:01:23,293 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 17:01:23,294 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:23,294 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:01:23,294 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:01:23,294 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration1_Loop [2022-11-25 17:01:23,294 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:01:23,295 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:01:23,297 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 17:01:23,310 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 17:01:23,325 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 17:01:23,385 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:01:23,391 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 17:01:23,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:23,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:23,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:23,415 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 17:01:23,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-25 17:01:23,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:01:23,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:01:23,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:01:23,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:01:23,447 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 17:01:23,447 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 17:01:23,475 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:01:23,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:23,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:23,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:23,488 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:23,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-25 17:01:23,494 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 17:01:23,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:01:23,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:01:23,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:01:23,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:01:23,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:01:23,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:01:23,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:01:23,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 17:01:23,537 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 17:01:23,537 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 17:01:23,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:23,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:23,567 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:23,577 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 17:01:23,578 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 17:01:23,578 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 17:01:23,578 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2022-11-25 17:01:23,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-25 17:01:23,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-11-25 17:01:23,590 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 17:01:23,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:23,668 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:01:23,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:23,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-11-25 17:01:23,749 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:01:23,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:23,826 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 17:01:23,914 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 17:01:23,917 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:24,001 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2022-11-25 17:01:24,004 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 17:01:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:24,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2022-11-25 17:01:24,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2022-11-25 17:01:24,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:24,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2022-11-25 17:01:24,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:24,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2022-11-25 17:01:24,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:24,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2022-11-25 17:01:24,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-25 17:01:24,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-11-25 17:01:24,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-11-25 17:01:24,038 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-11-25 17:01:24,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-11-25 17:01:24,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:01:24,040 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-25 17:01:24,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-11-25 17:01:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-11-25 17:01:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2022-11-25 17:01:24,076 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-11-25 17:01:24,077 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-11-25 17:01:24,077 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-25 17:01:24,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2022-11-25 17:01:24,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-25 17:01:24,081 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:01:24,082 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:01:24,083 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 17:01:24,083 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-25 17:01:24,083 INFO L748 eck$LassoCheckResult]: Stem: 79#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 80#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_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 77#L17-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 74#L19-2 [2022-11-25 17:01:24,084 INFO L750 eck$LassoCheckResult]: Loop: 74#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 1 + main_~y~0#1; 74#L19-2 [2022-11-25 17:01:24,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:24,085 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-25 17:01:24,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:24,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589585241] [2022-11-25 17:01:24,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:24,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:24,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:01:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:24,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:01:24,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2022-11-25 17:01:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:24,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217661756] [2022-11-25 17:01:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:24,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:24,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:01:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:24,139 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:01:24,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2022-11-25 17:01:24,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:24,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463375800] [2022-11-25 17:01:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:24,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:24,147 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:01:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:24,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:01:24,178 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:01:24,179 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:01:24,179 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:01:24,179 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:01:24,180 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:01:24,180 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:24,180 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:01:24,180 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:01:24,180 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration2_Loop [2022-11-25 17:01:24,181 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:01:24,181 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:01:24,183 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 17:01:24,187 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 17:01:24,192 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 17:01:24,245 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:01:24,246 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:01:24,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:24,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:24,248 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:24,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:01:24,264 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:24,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-25 17:01:24,293 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:01:24,293 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:01:24,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:24,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:24,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:24,309 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:24,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-25 17:01:24,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:01:24,313 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:24,335 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:01:24,335 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:01:24,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:24,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:24,340 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:24,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-25 17:01:24,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:01:24,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:24,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:24,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:24,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:24,368 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:24,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-25 17:01:24,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:01:24,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:24,544 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 17:01:24,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:24,548 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:01:24,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:01:24,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:01:24,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:01:24,549 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 17:01:24,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:24,549 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:01:24,549 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:01:24,549 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration2_Loop [2022-11-25 17:01:24,549 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:01:24,550 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:01:24,551 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 17:01:24,561 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 17:01:24,565 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 17:01:24,619 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:01:24,620 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 17:01:24,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:24,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:24,622 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:24,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-25 17:01:24,632 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 17:01:24,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:01:24,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:01:24,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:01:24,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:01:24,649 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 17:01:24,649 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 17:01:24,662 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:01:24,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:24,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:24,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:24,674 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:24,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-25 17:01:24,680 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 17:01:24,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:01:24,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:01:24,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:01:24,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:01:24,699 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 17:01:24,700 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 17:01:24,716 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:01:24,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:24,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:24,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:24,728 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:24,741 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 17:01:24,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-25 17:01:24,756 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:01:24,756 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:01:24,756 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:01:24,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:01:24,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:01:24,758 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:01:24,758 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:01:24,768 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 17:01:24,772 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 17:01:24,773 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 17:01:24,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:24,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:24,775 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:24,784 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 17:01:24,784 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 17:01:24,784 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 17:01:24,784 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-25 17:01:24,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:24,800 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 17:01:24,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-25 17:01:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:24,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:01:24,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:24,851 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:01:24,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:24,852 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 17:01:24,853 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-25 17:01:24,853 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:24,879 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 19 transitions. Complement of second has 5 states. [2022-11-25 17:01:24,885 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 17:01:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-25 17:01:24,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2022-11-25 17:01:24,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:24,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2022-11-25 17:01:24,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:24,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-11-25 17:01:24,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:24,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2022-11-25 17:01:24,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-25 17:01:24,890 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2022-11-25 17:01:24,890 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-11-25 17:01:24,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2022-11-25 17:01:24,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2022-11-25 17:01:24,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 17:01:24,891 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 14 transitions. [2022-11-25 17:01:24,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2022-11-25 17:01:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2022-11-25 17:01:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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 17:01:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-11-25 17:01:24,893 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-11-25 17:01:24,893 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-11-25 17:01:24,893 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-25 17:01:24,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2022-11-25 17:01:24,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-25 17:01:24,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:01:24,894 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:01:24,894 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2022-11-25 17:01:24,895 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-25 17:01:24,895 INFO L748 eck$LassoCheckResult]: Stem: 131#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 132#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_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 129#L17-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 127#L19-2 assume !(main_~y~0#1 < main_~x~0#1); 128#L19-3 main_~x~0#1 := main_~x~0#1 - 1; 130#L17-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 126#L19-2 [2022-11-25 17:01:24,895 INFO L750 eck$LassoCheckResult]: Loop: 126#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 1 + main_~y~0#1; 126#L19-2 [2022-11-25 17:01:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:24,896 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2022-11-25 17:01:24,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:24,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208665101] [2022-11-25 17:01:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:24,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:24,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:01:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:24,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:01:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:24,918 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2022-11-25 17:01:24,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:24,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130986674] [2022-11-25 17:01:24,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:24,938 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:01:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:01:24,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:01:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:24,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1810787031, now seen corresponding path program 1 times [2022-11-25 17:01:24,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:01:24,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026975796] [2022-11-25 17:01:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:24,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:01:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:25,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:01:25,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026975796] [2022-11-25 17:01:25,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026975796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:01:25,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688719899] [2022-11-25 17:01:25,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:01:25,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:01:25,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:25,061 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:01:25,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 17:01:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:25,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:01:25,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:25,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:01:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:01:25,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688719899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:01:25,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:01:25,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-25 17:01:25,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970935261] [2022-11-25 17:01:25,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:01:25,249 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:01:25,249 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:01:25,250 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:01:25,250 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:01:25,251 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 17:01:25,251 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:25,251 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:01:25,251 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:01:25,251 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration3_Loop [2022-11-25 17:01:25,251 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:01:25,252 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:01:25,255 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 17:01:25,259 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 17:01:25,263 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 17:01:25,313 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:01:25,313 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 17:01:25,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:25,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:25,317 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:25,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:01:25,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:25,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-25 17:01:25,351 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:01:25,351 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:01:25,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:25,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:25,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:25,358 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:25,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:01:25,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:25,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-25 17:01:25,392 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 17:01:25,392 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 17:01:25,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:25,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:25,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:25,400 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:25,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 17:01:25,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:25,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-25 17:01:25,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:25,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:25,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:25,466 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:25,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-25 17:01:25,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 17:01:25,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 17:01:25,633 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 17:01:25,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:25,637 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 17:01:25,638 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 17:01:25,638 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 17:01:25,638 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 17:01:25,638 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 17:01:25,638 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:25,638 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 17:01:25,638 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 17:01:25,638 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration3_Loop [2022-11-25 17:01:25,638 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 17:01:25,639 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 17:01:25,640 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 17:01:25,651 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 17:01:25,659 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 17:01:25,709 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 17:01:25,709 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 17:01:25,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:25,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:25,711 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:25,720 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 17:01:25,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-25 17:01:25,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:01:25,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:01:25,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:01:25,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:01:25,742 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 17:01:25,742 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 17:01:25,762 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 17:01:25,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:25,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:25,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:25,775 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:25,780 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 17:01:25,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-25 17:01:25,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 17:01:25,796 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 17:01:25,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 17:01:25,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 17:01:25,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 17:01:25,799 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 17:01:25,799 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 17:01:25,818 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 17:01:25,825 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-25 17:01:25,825 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 17:01:25,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:01:25,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:01:25,830 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:01:25,833 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 17:01:25,833 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 17:01:25,833 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 17:01:25,833 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-25 17:01:25,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-25 17:01:25,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:25,841 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 17:01:25,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:25,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:01:25,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:25,883 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:01:25,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:25,884 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 17:01:25,884 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-25 17:01:25,885 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,900 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2022-11-25 17:01:25,900 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 17:01:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-25 17:01:25,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2022-11-25 17:01:25,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:25,902 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 17:01:25,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:25,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:01:25,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:25,939 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:01:25,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:25,940 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 17:01:25,940 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-25 17:01:25,941 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,955 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2022-11-25 17:01:25,956 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 17:01:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-25 17:01:25,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2022-11-25 17:01:25,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:25,957 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 17:01:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:01:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:25,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:01:25,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:01:25,992 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:01:25,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:01:25,992 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 17:01:25,993 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-25 17:01:25,993 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,007 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 12 transitions. Complement of second has 4 states. [2022-11-25 17:01:26,008 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 17:01:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:01:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-11-25 17:01:26,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 1 letters. [2022-11-25 17:01:26,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:26,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2022-11-25 17:01:26,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:26,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-25 17:01:26,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 17:01:26,010 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2022-11-25 17:01:26,011 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 17:01:26,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2022-11-25 17:01:26,011 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-25 17:01:26,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-25 17:01:26,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-25 17:01:26,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:26,012 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:01:26,012 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:01:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:01:26,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:01:26,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:01:26,017 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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 17:01:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:01:26,020 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-25 17:01:26,020 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-25 17:01:26,020 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 17:01:26,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 17:01:26,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-25 17:01:26,021 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-25 17:01:26,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-25 17:01:26,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:01:26,021 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:01:26,021 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:01:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:01:26,022 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:01:26,022 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-25 17:01:26,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-25 17:01:26,022 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 17:01:26,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-25 17:01:26,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 05:01:26 BoogieIcfgContainer [2022-11-25 17:01:26,031 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 17:01:26,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:01:26,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:01:26,032 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:01:26,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:01:22" (3/4) ... [2022-11-25 17:01:26,036 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:01:26,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:01:26,037 INFO L158 Benchmark]: Toolchain (without parser) took 4331.22ms. Allocated memory was 161.5MB in the beginning and 205.5MB in the end (delta: 44.0MB). Free memory was 117.9MB in the beginning and 101.8MB in the end (delta: 16.1MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. [2022-11-25 17:01:26,038 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 161.5MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:01:26,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.64ms. Allocated memory is still 161.5MB. Free memory was 117.9MB in the beginning and 109.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 17:01:26,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.48ms. Allocated memory is still 161.5MB. Free memory was 108.5MB in the beginning and 107.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:01:26,039 INFO L158 Benchmark]: Boogie Preprocessor took 20.31ms. Allocated memory is still 161.5MB. Free memory was 107.4MB in the beginning and 106.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:01:26,040 INFO L158 Benchmark]: RCFGBuilder took 313.41ms. Allocated memory is still 161.5MB. Free memory was 106.4MB in the beginning and 98.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 17:01:26,040 INFO L158 Benchmark]: BuchiAutomizer took 3718.11ms. Allocated memory was 161.5MB in the beginning and 205.5MB in the end (delta: 44.0MB). Free memory was 98.0MB in the beginning and 101.8MB in the end (delta: -3.7MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2022-11-25 17:01:26,040 INFO L158 Benchmark]: Witness Printer took 4.54ms. Allocated memory is still 205.5MB. Free memory is still 101.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:01:26,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 161.5MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.64ms. Allocated memory is still 161.5MB. Free memory was 117.9MB in the beginning and 109.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.48ms. Allocated memory is still 161.5MB. Free memory was 108.5MB in the beginning and 107.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.31ms. Allocated memory is still 161.5MB. Free memory was 107.4MB in the beginning and 106.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.41ms. Allocated memory is still 161.5MB. Free memory was 106.4MB in the beginning and 98.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3718.11ms. Allocated memory was 161.5MB in the beginning and 205.5MB in the end (delta: 44.0MB). Free memory was 98.0MB in the beginning and 101.8MB in the end (delta: -3.7MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * Witness Printer took 4.54ms. Allocated memory is still 205.5MB. Free memory is still 101.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 20 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf100 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf93 smp100 dnf100 smp100 tf111 neg98 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 83ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s 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 17:01:26,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-11-25 17:01:26,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:26,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-25 17:01:26,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14d7de7-1f7b-42f5-a4e0-331fda77800c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE