./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8393723b 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_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro --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 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 --- 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-8393723 [2022-11-18 20:04:02,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:04:02,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:04:02,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:04:02,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:04:02,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:04:02,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:04:02,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:04:02,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:04:02,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:04:02,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:04:02,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:04:02,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:04:02,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:04:02,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:04:02,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:04:02,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:04:02,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:04:02,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:04:02,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:04:02,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:04:02,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:04:02,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:04:02,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:04:02,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:04:02,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:04:02,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:04:02,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:04:02,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:04:02,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:04:02,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:04:02,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:04:02,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:04:02,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:04:02,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:04:02,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:04:02,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:04:02,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:04:02,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:04:02,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:04:02,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:04:02,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-18 20:04:02,679 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:04:02,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:04:02,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:04:02,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:04:02,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:04:02,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:04:02,682 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:04:02,683 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 20:04:02,683 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 20:04:02,683 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 20:04:02,684 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 20:04:02,685 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 20:04:02,685 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 20:04:02,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:04:02,686 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:04:02,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:04:02,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:04:02,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 20:04:02,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 20:04:02,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 20:04:02,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:04:02,687 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 20:04:02,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:04:02,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 20:04:02,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:04:02,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:04:02,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:04:02,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:04:02,692 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 20:04:02,692 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_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 [2022-11-18 20:04:03,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:04:03,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:04:03,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:04:03,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:04:03,040 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:04:03,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2022-11-18 20:04:03,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/data/2c8a5e564/cbf936d0804c42eb86464528f8023f3d/FLAG34e7b2b3d [2022-11-18 20:04:03,591 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:04:03,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2022-11-18 20:04:03,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/data/2c8a5e564/cbf936d0804c42eb86464528f8023f3d/FLAG34e7b2b3d [2022-11-18 20:04:03,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/data/2c8a5e564/cbf936d0804c42eb86464528f8023f3d [2022-11-18 20:04:03,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:04:03,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:04:04,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:04:04,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:04:04,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:04:04,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:04,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5192c4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04, skipping insertion in model container [2022-11-18 20:04:04,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:04,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:04:04,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:04:04,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:04:04,250 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:04:04,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:04:04,313 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:04:04,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04 WrapperNode [2022-11-18 20:04:04,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:04:04,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:04:04,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:04:04,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:04:04,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,346 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-18 20:04:04,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:04:04,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:04:04,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:04:04,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:04:04,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,366 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:04:04,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:04:04,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:04:04,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:04:04,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (1/1) ... [2022-11-18 20:04:04,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:04,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:04,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:04,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 20:04:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:04:04,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:04:04,521 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:04:04,524 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:04:04,638 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:04:04,648 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:04:04,648 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:04:04,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:04:04 BoogieIcfgContainer [2022-11-18 20:04:04,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:04:04,654 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 20:04:04,655 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 20:04:04,659 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 20:04:04,660 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:04:04,661 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:04:03" (1/3) ... [2022-11-18 20:04:04,662 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@75e35927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:04:04, skipping insertion in model container [2022-11-18 20:04:04,662 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:04:04,662 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:04" (2/3) ... [2022-11-18 20:04:04,663 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@75e35927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:04:04, skipping insertion in model container [2022-11-18 20:04:04,663 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:04:04,664 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:04:04" (3/3) ... [2022-11-18 20:04:04,665 INFO L332 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2022-11-18 20:04:04,752 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 20:04:04,752 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 20:04:04,752 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 20:04:04,753 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 20:04:04,753 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 20:04:04,753 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 20:04:04,753 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 20:04:04,754 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 20:04:04,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2022-11-18 20:04:04,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-18 20:04:04,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:04,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:04,804 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:04:04,804 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:04:04,805 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 20:04:04,805 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2022-11-18 20:04:04,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-18 20:04:04,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:04,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:04,808 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:04:04,808 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:04:04,816 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 5#L18-1true [2022-11-18 20:04:04,818 INFO L750 eck$LassoCheckResult]: Loop: 5#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 10#L12true assume !(10 == main_~i~0#1); 2#L12-2true assume 0 == main_~i~0#1;main_~up~0#1 := 1; 7#L15-1true assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5#L18-1true [2022-11-18 20:04:04,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:04,824 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-18 20:04:04,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:04,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770271999] [2022-11-18 20:04:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:04,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:04,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:04,964 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:04,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2022-11-18 20:04:04,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:04,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155428264] [2022-11-18 20:04:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:04,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:05,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:05,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:05,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:05,031 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2022-11-18 20:04:05,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:05,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820646431] [2022-11-18 20:04:05,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:05,043 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:05,055 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:05,158 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:05,159 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:05,159 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:05,160 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:05,160 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:04:05,160 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,160 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:05,161 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:05,161 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2022-11-18 20:04:05,161 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:05,162 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:05,198 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:05,212 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:05,222 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:05,247 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:05,340 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:05,348 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:04:05,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:05,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:05,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:05,362 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:05,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-18 20:04:05,405 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:05,405 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: [] [2022-11-18 20:04:05,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:05,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:05,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:05,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:05,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:05,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-18 20:04:05,461 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:05,461 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: [] [2022-11-18 20:04:05,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:05,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:05,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:05,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-18 20:04:05,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:05,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:05,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:05,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:05,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:05,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:04:05,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:05,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-18 20:04:05,566 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:04:05,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:05,574 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:05,575 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:05,575 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:05,575 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:05,575 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:04:05,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:05,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:05,576 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2022-11-18 20:04:05,576 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:05,576 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:05,578 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:05,585 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:05,593 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:05,607 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:05,688 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:05,692 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:04:05,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:05,697 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:05,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-18 20:04:05,713 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 [2022-11-18 20:04:05,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:05,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:05,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:05,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:05,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:05,730 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:04:05,730 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:05,743 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:05,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:05,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:05,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:05,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-18 20:04:05,796 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 [2022-11-18 20:04:05,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:05,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:05,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:05,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:05,832 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:05,832 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:05,862 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:05,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:05,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:05,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:05,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-18 20:04:05,884 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 [2022-11-18 20:04:05,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:05,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:05,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:05,905 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:05,916 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:05,916 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:05,931 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:05,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:05,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:05,946 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:05,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-18 20:04:05,963 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 [2022-11-18 20:04:05,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:05,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:05,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:05,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:05,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:05,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:04:05,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:05,988 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:04:05,992 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 20:04:05,992 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:04:05,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:05,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:06,000 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:06,031 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:04:06,031 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:04:06,031 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:04:06,032 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-11-18 20:04:06,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-18 20:04:06,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:06,042 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:04:06,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:06,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:06,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:06,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:06,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:06,218 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 [2022-11-18 20:04:06,221 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:04:06,352 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 54 transitions. Complement of second has 8 states. [2022-11-18 20:04:06,356 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 [2022-11-18 20:04:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:04:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2022-11-18 20:04:06,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-18 20:04:06,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:06,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-18 20:04:06,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:06,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2022-11-18 20:04:06,372 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:06,373 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2022-11-18 20:04:06,376 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-11-18 20:04:06,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 30 transitions. [2022-11-18 20:04:06,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-18 20:04:06,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-11-18 20:04:06,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2022-11-18 20:04:06,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:06,383 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 30 transitions. [2022-11-18 20:04:06,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2022-11-18 20:04:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-11-18 20:04:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 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) [2022-11-18 20:04:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2022-11-18 20:04:06,407 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 28 transitions. [2022-11-18 20:04:06,407 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2022-11-18 20:04:06,407 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-18 20:04:06,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2022-11-18 20:04:06,408 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-11-18 20:04:06,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:06,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:06,409 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 20:04:06,409 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:04:06,409 INFO L748 eck$LassoCheckResult]: Stem: 97#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 98#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 103#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 105#L12 [2022-11-18 20:04:06,410 INFO L750 eck$LassoCheckResult]: Loop: 105#L12 assume !(10 == main_~i~0#1); 91#L12-2 assume !(0 == main_~i~0#1); 93#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 107#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 105#L12 [2022-11-18 20:04:06,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-18 20:04:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:06,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975626468] [2022-11-18 20:04:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:06,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:06,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:06,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:06,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2022-11-18 20:04:06,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:06,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153671356] [2022-11-18 20:04:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:06,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:06,429 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:06,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:06,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2022-11-18 20:04:06,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:06,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291891891] [2022-11-18 20:04:06,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:06,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:06,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:06,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291891891] [2022-11-18 20:04:06,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291891891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:06,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:06,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:04:06,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894846901] [2022-11-18 20:04:06,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:06,562 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:06,562 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:06,563 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:06,563 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:06,563 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:04:06,563 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:06,563 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:06,563 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:06,564 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2022-11-18 20:04:06,564 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:06,564 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:06,566 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:06,570 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:06,582 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:06,586 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:06,682 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:06,682 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:04:06,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:06,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:06,687 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:06,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:06,699 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:06,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-18 20:04:06,718 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:06,718 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: [] [2022-11-18 20:04:06,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:06,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:06,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:06,724 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:06,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-18 20:04:06,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:06,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:06,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:06,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:06,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:06,763 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:06,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-18 20:04:06,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:04:06,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:06,859 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:04:06,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:06,863 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:06,863 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:06,863 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:06,863 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:06,864 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:04:06,864 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:06,864 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:06,864 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:06,864 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2022-11-18 20:04:06,864 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:06,864 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:06,866 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:06,875 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:06,894 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:06,899 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:07,021 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:07,022 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:04:07,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:07,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:07,024 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:07,037 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 [2022-11-18 20:04:07,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-18 20:04:07,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:07,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:07,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:07,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:07,060 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:07,060 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:07,076 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:07,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:07,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:07,084 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:07,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-18 20:04:07,092 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 [2022-11-18 20:04:07,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:07,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:07,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:07,108 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-18 20:04:07,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:07,114 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-18 20:04:07,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:07,132 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:04:07,137 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 20:04:07,137 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:04:07,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:07,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:07,142 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:07,151 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:04:07,151 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:04:07,151 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:04:07,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-18 20:04:07,152 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2022-11-18 20:04:07,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:07,167 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:04:07,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:07,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:07,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:07,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:07,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:07,279 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 [2022-11-18 20:04:07,279 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-11-18 20:04:07,340 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 28 states and 43 transitions. Complement of second has 7 states. [2022-11-18 20:04:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-11-18 20:04:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-18 20:04:07,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-18 20:04:07,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:07,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-18 20:04:07,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:07,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-18 20:04:07,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:07,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2022-11-18 20:04:07,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-18 20:04:07,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 35 transitions. [2022-11-18 20:04:07,348 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-11-18 20:04:07,348 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-11-18 20:04:07,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 35 transitions. [2022-11-18 20:04:07,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:07,349 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 35 transitions. [2022-11-18 20:04:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 35 transitions. [2022-11-18 20:04:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-11-18 20:04:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 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) [2022-11-18 20:04:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 34 transitions. [2022-11-18 20:04:07,352 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 34 transitions. [2022-11-18 20:04:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:04:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:04:07,356 INFO L87 Difference]: Start difference. First operand 20 states and 34 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-18 20:04:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:07,372 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2022-11-18 20:04:07,373 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 52 transitions. [2022-11-18 20:04:07,399 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 20:04:07,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:07,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:07,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 46 transitions. [2022-11-18 20:04:07,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-18 20:04:07,405 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-11-18 20:04:07,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 46 transitions. [2022-11-18 20:04:07,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:07,410 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 46 transitions. [2022-11-18 20:04:07,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 46 transitions. [2022-11-18 20:04:07,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-18 20:04:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 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) [2022-11-18 20:04:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2022-11-18 20:04:07,414 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 45 transitions. [2022-11-18 20:04:07,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:04:07,419 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 45 transitions. [2022-11-18 20:04:07,419 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-18 20:04:07,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 45 transitions. [2022-11-18 20:04:07,420 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 20:04:07,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:07,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:07,421 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-18 20:04:07,421 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:04:07,422 INFO L748 eck$LassoCheckResult]: Stem: 239#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 240#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 247#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 252#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 234#L12-2 assume !(0 == main_~i~0#1); 236#L15-1 [2022-11-18 20:04:07,422 INFO L750 eck$LassoCheckResult]: Loop: 236#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 245#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 256#L12 assume !(10 == main_~i~0#1); 254#L12-2 assume !(0 == main_~i~0#1); 236#L15-1 [2022-11-18 20:04:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2022-11-18 20:04:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:07,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685473820] [2022-11-18 20:04:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:07,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:07,429 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:07,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:07,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2022-11-18 20:04:07,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:07,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755707578] [2022-11-18 20:04:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:07,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:07,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:07,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2022-11-18 20:04:07,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:07,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933162250] [2022-11-18 20:04:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:07,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:07,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:07,504 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:07,504 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:07,504 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:07,505 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:07,505 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:04:07,505 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:07,505 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:07,505 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:07,505 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2022-11-18 20:04:07,506 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:07,506 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:07,507 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:07,517 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:07,521 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:07,535 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:07,632 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:07,632 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:04:07,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:07,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:07,633 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:07,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:07,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:07,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-18 20:04:07,666 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:07,666 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: [] [2022-11-18 20:04:07,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:07,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:07,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:07,677 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:07,687 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:07,687 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:07,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-18 20:04:07,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:07,717 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=4} Honda state: {ULTIMATE.start_main_~up~0#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:07,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:07,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:07,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:07,729 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:07,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:07,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:07,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-18 20:04:07,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:07,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:07,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:07,777 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:07,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-18 20:04:07,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:04:07,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:07,894 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:04:07,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-11-18 20:04:07,899 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:07,899 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:07,899 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:07,899 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:07,899 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:04:07,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:07,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:07,899 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:07,900 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2022-11-18 20:04:07,900 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:07,900 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:07,901 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:07,919 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:07,932 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:07,936 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:08,036 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:08,036 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:04:08,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,039 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,049 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:04:08,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-18 20:04:08,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:08,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:08,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:08,063 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-18 20:04:08,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:08,065 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-18 20:04:08,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:08,082 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:08,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,088 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,095 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 [2022-11-18 20:04:08,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-18 20:04:08,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:08,109 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:08,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:08,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:08,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:08,111 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:04:08,112 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:08,126 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:04:08,132 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-18 20:04:08,132 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:04:08,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,133 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,138 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:04:08,138 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:04:08,138 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:04:08,138 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-18 20:04:08,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-18 20:04:08,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,148 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:04:08,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:08,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:08,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:08,247 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-18 20:04:08,248 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 45 transitions. cyclomatic complexity: 20 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:04:08,302 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 45 transitions. cyclomatic complexity: 20. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 65 states and 104 transitions. Complement of second has 7 states. [2022-11-18 20:04:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:04:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-18 20:04:08,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2022-11-18 20:04:08,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:08,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2022-11-18 20:04:08,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:08,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2022-11-18 20:04:08,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:08,312 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 104 transitions. [2022-11-18 20:04:08,314 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2022-11-18 20:04:08,315 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 60 states and 98 transitions. [2022-11-18 20:04:08,315 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2022-11-18 20:04:08,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2022-11-18 20:04:08,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 98 transitions. [2022-11-18 20:04:08,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:08,316 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 98 transitions. [2022-11-18 20:04:08,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 98 transitions. [2022-11-18 20:04:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2022-11-18 20:04:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.6785714285714286) internal successors, (94), 55 states have internal predecessors, (94), 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) [2022-11-18 20:04:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 94 transitions. [2022-11-18 20:04:08,331 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 94 transitions. [2022-11-18 20:04:08,331 INFO L428 stractBuchiCegarLoop]: Abstraction has 56 states and 94 transitions. [2022-11-18 20:04:08,331 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-18 20:04:08,332 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 94 transitions. [2022-11-18 20:04:08,333 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2022-11-18 20:04:08,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:08,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:08,338 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:04:08,338 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:04:08,338 INFO L748 eck$LassoCheckResult]: Stem: 383#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 384#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 392#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 420#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 418#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 416#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 412#L18-1 [2022-11-18 20:04:08,338 INFO L750 eck$LassoCheckResult]: Loop: 412#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 409#L12 assume !(10 == main_~i~0#1); 401#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 402#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 412#L18-1 [2022-11-18 20:04:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:08,339 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2022-11-18 20:04:08,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:08,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128989019] [2022-11-18 20:04:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:08,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:08,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128989019] [2022-11-18 20:04:08,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128989019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:08,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:08,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:04:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219589857] [2022-11-18 20:04:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:08,406 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:04:08,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 2 times [2022-11-18 20:04:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:08,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102356093] [2022-11-18 20:04:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:08,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:08,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:08,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:08,444 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:08,445 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:08,445 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:08,445 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:08,445 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:04:08,445 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,445 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:08,445 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:08,445 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2022-11-18 20:04:08,446 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:08,446 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:08,447 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:08,450 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:08,454 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:08,457 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:08,512 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:08,513 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:04:08,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,514 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:08,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:08,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-18 20:04:08,551 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:08,551 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:08,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,561 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:08,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:08,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-18 20:04:08,598 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:08,599 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:08,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,610 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:08,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:08,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-18 20:04:08,654 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:08,655 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:08,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,665 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:08,670 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:08,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-18 20:04:08,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,703 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:04:08,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:08,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-18 20:04:08,742 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:04:08,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,751 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:08,751 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:08,751 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:08,752 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:08,752 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:04:08,752 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,752 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:08,752 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:08,752 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2022-11-18 20:04:08,752 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:08,752 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:08,753 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:08,757 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:08,761 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:08,764 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:08,824 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:08,824 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:04:08,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,826 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,831 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 [2022-11-18 20:04:08,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-18 20:04:08,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:08,844 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:08,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:08,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:08,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:08,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:04:08,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:08,859 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:08,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,866 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,870 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 [2022-11-18 20:04:08,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-18 20:04:08,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:08,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:08,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:08,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:08,887 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:08,887 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:08,906 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:08,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,915 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,919 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 [2022-11-18 20:04:08,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-18 20:04:08,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:08,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:08,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:08,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:08,937 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:08,938 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:08,960 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:08,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:08,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:08,968 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:08,973 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 [2022-11-18 20:04:08,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-18 20:04:08,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:08,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:08,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:08,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:08,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:08,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:04:08,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:09,003 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:04:09,011 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 20:04:09,011 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:04:09,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:09,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:09,013 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:09,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:09,046 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:04:09,047 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:04:09,047 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:04:09,047 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-11-18 20:04:09,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-18 20:04:09,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:09,052 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:04:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:09,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:09,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:09,125 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 [2022-11-18 20:04:09,125 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 94 transitions. cyclomatic complexity: 44 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-18 20:04:09,181 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 94 transitions. cyclomatic complexity: 44. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 116 states and 190 transitions. Complement of second has 7 states. [2022-11-18 20:04:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-18 20:04:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-18 20:04:09,187 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-18 20:04:09,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:09,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-18 20:04:09,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:09,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 8 letters. [2022-11-18 20:04:09,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:09,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 190 transitions. [2022-11-18 20:04:09,193 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2022-11-18 20:04:09,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 107 states and 175 transitions. [2022-11-18 20:04:09,201 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2022-11-18 20:04:09,202 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-11-18 20:04:09,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 175 transitions. [2022-11-18 20:04:09,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:09,202 INFO L218 hiAutomatonCegarLoop]: Abstraction has 107 states and 175 transitions. [2022-11-18 20:04:09,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 175 transitions. [2022-11-18 20:04:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2022-11-18 20:04:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.6770833333333333) internal successors, (161), 95 states have internal predecessors, (161), 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) [2022-11-18 20:04:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 161 transitions. [2022-11-18 20:04:09,215 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 161 transitions. [2022-11-18 20:04:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:09,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:04:09,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:04:09,217 INFO L87 Difference]: Start difference. First operand 96 states and 161 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:04:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:09,236 INFO L93 Difference]: Finished difference Result 107 states and 163 transitions. [2022-11-18 20:04:09,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 163 transitions. [2022-11-18 20:04:09,238 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2022-11-18 20:04:09,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 101 states and 153 transitions. [2022-11-18 20:04:09,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2022-11-18 20:04:09,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2022-11-18 20:04:09,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 153 transitions. [2022-11-18 20:04:09,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:09,242 INFO L218 hiAutomatonCegarLoop]: Abstraction has 101 states and 153 transitions. [2022-11-18 20:04:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 153 transitions. [2022-11-18 20:04:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2022-11-18 20:04:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 95 states have internal predecessors, (148), 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) [2022-11-18 20:04:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2022-11-18 20:04:09,257 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 148 transitions. [2022-11-18 20:04:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:04:09,258 INFO L428 stractBuchiCegarLoop]: Abstraction has 96 states and 148 transitions. [2022-11-18 20:04:09,258 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-18 20:04:09,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 148 transitions. [2022-11-18 20:04:09,260 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2022-11-18 20:04:09,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:09,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:09,260 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1] [2022-11-18 20:04:09,261 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:04:09,261 INFO L748 eck$LassoCheckResult]: Stem: 814#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 815#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 809#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 811#L12 assume !(10 == main_~i~0#1); 818#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 873#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 868#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 864#L12 assume !(10 == main_~i~0#1); 858#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 856#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 828#L18-1 [2022-11-18 20:04:09,261 INFO L750 eck$LassoCheckResult]: Loop: 828#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 849#L12 assume !(10 == main_~i~0#1); 829#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 827#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 828#L18-1 [2022-11-18 20:04:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:09,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1506873443, now seen corresponding path program 1 times [2022-11-18 20:04:09,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:09,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510077128] [2022-11-18 20:04:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:09,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:09,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:09,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510077128] [2022-11-18 20:04:09,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510077128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:09,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:09,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:04:09,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349127963] [2022-11-18 20:04:09,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:09,287 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:04:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 3 times [2022-11-18 20:04:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:09,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573024041] [2022-11-18 20:04:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:09,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:09,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:09,296 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:09,322 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:09,322 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:09,322 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:09,322 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:09,323 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:04:09,323 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:09,323 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:09,323 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:09,323 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2022-11-18 20:04:09,323 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:09,323 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:09,324 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:09,330 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:09,333 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:09,337 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:09,385 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:09,385 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:04:09,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:09,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:09,387 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:09,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:09,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:09,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-18 20:04:09,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:09,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:09,429 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:09,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:04:09,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:09,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-18 20:04:09,462 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:04:09,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:09,467 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:09,467 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:09,468 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:09,468 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:09,468 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:04:09,468 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:09,468 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:09,468 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:09,468 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2022-11-18 20:04:09,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:09,468 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:09,469 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:09,473 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:09,480 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:09,483 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:09,537 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:09,538 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:04:09,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:09,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:09,543 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:09,547 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 [2022-11-18 20:04:09,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-18 20:04:09,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:09,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:09,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:09,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:09,564 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:09,564 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:09,582 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:09,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:09,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:09,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:09,592 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:09,597 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 [2022-11-18 20:04:09,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-18 20:04:09,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:09,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:09,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:09,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:09,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:09,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:04:09,612 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:09,626 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:04:09,637 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 20:04:09,637 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:04:09,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:09,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:09,639 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:09,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-18 20:04:09,642 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:04:09,643 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:04:09,643 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:04:09,643 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-11-18 20:04:09,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:09,646 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:04:09,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:09,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:09,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:09,730 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 [2022-11-18 20:04:09,730 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 20:04:09,772 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 147 states and 221 transitions. Complement of second has 7 states. [2022-11-18 20:04:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 20:04:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-18 20:04:09,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-18 20:04:09,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:09,776 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:04:09,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:09,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:09,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:09,836 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-18 20:04:09,837 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 20:04:09,859 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 147 states and 221 transitions. Complement of second has 7 states. [2022-11-18 20:04:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 20:04:09,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-18 20:04:09,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-18 20:04:09,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:09,861 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:04:09,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:09,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:09,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:09,918 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 2 loop predicates [2022-11-18 20:04:09,918 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 20:04:09,942 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 161 states and 250 transitions. Complement of second has 6 states. [2022-11-18 20:04:09,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 20:04:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2022-11-18 20:04:09,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-18 20:04:09,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:09,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 4 letters. [2022-11-18 20:04:09,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:09,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 8 letters. [2022-11-18 20:04:09,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:09,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 161 states and 250 transitions. [2022-11-18 20:04:09,948 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 32 [2022-11-18 20:04:09,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 161 states to 119 states and 180 transitions. [2022-11-18 20:04:09,949 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2022-11-18 20:04:09,950 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2022-11-18 20:04:09,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 180 transitions. [2022-11-18 20:04:09,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:09,950 INFO L218 hiAutomatonCegarLoop]: Abstraction has 119 states and 180 transitions. [2022-11-18 20:04:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 180 transitions. [2022-11-18 20:04:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2022-11-18 20:04:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 76 states have internal predecessors, (117), 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) [2022-11-18 20:04:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 117 transitions. [2022-11-18 20:04:09,956 INFO L240 hiAutomatonCegarLoop]: Abstraction has 77 states and 117 transitions. [2022-11-18 20:04:09,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:09,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:04:09,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:04:09,957 INFO L87 Difference]: Start difference. First operand 77 states and 117 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-11-18 20:04:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:09,967 INFO L93 Difference]: Finished difference Result 57 states and 79 transitions. [2022-11-18 20:04:09,967 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 79 transitions. [2022-11-18 20:04:09,968 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2022-11-18 20:04:09,968 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 51 states and 68 transitions. [2022-11-18 20:04:09,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2022-11-18 20:04:09,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-11-18 20:04:09,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 68 transitions. [2022-11-18 20:04:09,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:09,969 INFO L218 hiAutomatonCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-11-18 20:04:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 68 transitions. [2022-11-18 20:04:09,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-11-18 20:04:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 47 states have internal predecessors, (65), 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) [2022-11-18 20:04:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2022-11-18 20:04:09,981 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 65 transitions. [2022-11-18 20:04:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:04:09,983 INFO L428 stractBuchiCegarLoop]: Abstraction has 48 states and 65 transitions. [2022-11-18 20:04:09,983 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-18 20:04:09,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 65 transitions. [2022-11-18 20:04:09,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-18 20:04:09,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:09,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:09,984 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:09,984 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:04:09,985 INFO L748 eck$LassoCheckResult]: Stem: 1657#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1658#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1659#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1660#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1667#L12-2 assume !(0 == main_~i~0#1); 1664#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1665#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1684#L12 assume !(10 == main_~i~0#1); 1681#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 1654#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1676#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1674#L12 [2022-11-18 20:04:09,985 INFO L750 eck$LassoCheckResult]: Loop: 1674#L12 assume !(10 == main_~i~0#1); 1672#L12-2 assume !(0 == main_~i~0#1); 1668#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1669#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1674#L12 [2022-11-18 20:04:09,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1179049836, now seen corresponding path program 1 times [2022-11-18 20:04:09,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:09,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246697286] [2022-11-18 20:04:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:09,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:10,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:10,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246697286] [2022-11-18 20:04:10,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246697286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:10,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436822825] [2022-11-18 20:04:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:10,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:10,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:10,059 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:04:10,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-18 20:04:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:10,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:04:10,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:10,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:10,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436822825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:04:10,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:04:10,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-18 20:04:10,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130614131] [2022-11-18 20:04:10,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:04:10,126 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:04:10,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 2 times [2022-11-18 20:04:10,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:10,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105368838] [2022-11-18 20:04:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:10,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:10,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:10,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:10,173 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:10,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:10,173 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:10,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:10,173 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:04:10,173 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:10,174 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:10,174 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:10,174 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2022-11-18 20:04:10,174 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:10,174 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:10,175 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:10,178 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:10,181 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:10,191 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:10,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:10,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:10,285 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:10,286 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:04:10,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:10,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:10,291 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:10,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:10,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:10,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-18 20:04:10,330 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:10,331 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:10,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:10,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:10,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:10,341 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:10,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:10,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:10,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-18 20:04:10,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:10,376 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:10,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:10,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:10,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:10,386 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:10,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:10,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:10,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-18 20:04:10,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:10,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:10,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:10,428 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:10,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:04:10,432 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:10,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-18 20:04:10,551 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:04:10,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:10,555 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:10,555 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:10,556 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:10,556 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:10,556 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:04:10,556 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:10,556 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:10,556 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:10,556 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2022-11-18 20:04:10,556 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:10,556 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:10,557 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:10,560 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:10,569 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:10,573 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:10,653 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:10,653 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:04:10,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:10,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:10,654 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:10,659 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 [2022-11-18 20:04:10,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-18 20:04:10,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:10,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:10,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:10,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:10,676 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:10,676 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:10,692 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:10,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:10,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:10,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:10,697 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:10,700 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 [2022-11-18 20:04:10,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-18 20:04:10,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:10,714 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:10,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:10,714 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-18 20:04:10,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:10,716 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-18 20:04:10,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:10,734 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:04:10,737 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 20:04:10,737 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:04:10,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:10,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:10,739 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:10,744 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:04:10,744 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:04:10,744 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:04:10,744 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2022-11-18 20:04:10,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-18 20:04:10,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:10,749 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:04:10,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:10,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:10,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:10,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:10,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:10,815 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 [2022-11-18 20:04:10,816 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:10,852 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 66 states and 90 transitions. Complement of second has 7 states. [2022-11-18 20:04:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-18 20:04:10,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2022-11-18 20:04:10,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:10,854 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:04:10,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:10,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:10,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:10,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:10,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:10,922 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-18 20:04:10,922 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:10,953 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 66 states and 90 transitions. Complement of second has 7 states. [2022-11-18 20:04:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:10,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-18 20:04:10,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2022-11-18 20:04:10,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:10,957 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:04:10,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:10,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:10,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:11,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:11,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:11,030 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 2 loop predicates [2022-11-18 20:04:11,030 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:11,066 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 86 states and 124 transitions. Complement of second has 6 states. [2022-11-18 20:04:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-18 20:04:11,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2022-11-18 20:04:11,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:11,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2022-11-18 20:04:11,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:11,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 8 letters. [2022-11-18 20:04:11,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:11,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 86 states and 124 transitions. [2022-11-18 20:04:11,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2022-11-18 20:04:11,072 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 86 states to 56 states and 76 transitions. [2022-11-18 20:04:11,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2022-11-18 20:04:11,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2022-11-18 20:04:11,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 76 transitions. [2022-11-18 20:04:11,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:11,073 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 76 transitions. [2022-11-18 20:04:11,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 76 transitions. [2022-11-18 20:04:11,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2022-11-18 20:04:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 41 states have internal predecessors, (57), 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) [2022-11-18 20:04:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2022-11-18 20:04:11,076 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 57 transitions. [2022-11-18 20:04:11,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:11,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:04:11,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:04:11,077 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:04:11,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:11,119 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2022-11-18 20:04:11,119 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 105 transitions. [2022-11-18 20:04:11,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2022-11-18 20:04:11,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 72 states and 93 transitions. [2022-11-18 20:04:11,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2022-11-18 20:04:11,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2022-11-18 20:04:11,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 93 transitions. [2022-11-18 20:04:11,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:11,121 INFO L218 hiAutomatonCegarLoop]: Abstraction has 72 states and 93 transitions. [2022-11-18 20:04:11,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 93 transitions. [2022-11-18 20:04:11,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2022-11-18 20:04:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 65 states have internal predecessors, (85), 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) [2022-11-18 20:04:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2022-11-18 20:04:11,125 INFO L240 hiAutomatonCegarLoop]: Abstraction has 66 states and 85 transitions. [2022-11-18 20:04:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:04:11,126 INFO L428 stractBuchiCegarLoop]: Abstraction has 66 states and 85 transitions. [2022-11-18 20:04:11,126 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-18 20:04:11,126 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 85 transitions. [2022-11-18 20:04:11,127 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2022-11-18 20:04:11,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:11,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:11,128 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:11,128 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:04:11,128 INFO L748 eck$LassoCheckResult]: Stem: 2284#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2285#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2293#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2298#L12 assume !(10 == main_~i~0#1); 2280#L12-2 assume !(0 == main_~i~0#1); 2281#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2312#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2294#L12 assume !(10 == main_~i~0#1); 2282#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2283#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2322#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2310#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2309#L12-2 [2022-11-18 20:04:11,128 INFO L750 eck$LassoCheckResult]: Loop: 2309#L12-2 assume !(0 == main_~i~0#1); 2345#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2344#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2308#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2309#L12-2 [2022-11-18 20:04:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:11,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1510748164, now seen corresponding path program 2 times [2022-11-18 20:04:11,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:11,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971014959] [2022-11-18 20:04:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:11,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:04:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:11,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971014959] [2022-11-18 20:04:11,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971014959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:11,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:11,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:04:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045098405] [2022-11-18 20:04:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:11,167 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:04:11,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:11,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2022-11-18 20:04:11,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:11,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336880361] [2022-11-18 20:04:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:11,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:11,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:11,209 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:11,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:11,210 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:11,210 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:11,210 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:04:11,210 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,210 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:11,210 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:11,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2022-11-18 20:04:11,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:11,211 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:11,212 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:11,218 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:11,221 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:11,225 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:11,289 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:11,289 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:04:11,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:11,291 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:11,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-18 20:04:11,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:11,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:11,319 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:11,319 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:11,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:11,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:11,324 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:11,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:11,335 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:11,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-18 20:04:11,357 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:11,357 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:11,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:11,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:11,362 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:11,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-18 20:04:11,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:11,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:11,383 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:11,383 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:11,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:11,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:11,387 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:11,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-18 20:04:11,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:11,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:11,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:11,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:11,407 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:11,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:04:11,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:11,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-18 20:04:11,511 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:04:11,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2022-11-18 20:04:11,514 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:11,514 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:11,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:11,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:11,515 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:04:11,515 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,515 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:11,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:11,515 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2022-11-18 20:04:11,515 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:11,515 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:11,516 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:11,522 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:11,525 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:11,528 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:11,605 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:11,608 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:04:11,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:11,612 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:11,619 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 [2022-11-18 20:04:11,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-18 20:04:11,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:11,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:11,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:11,633 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-18 20:04:11,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:11,635 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-18 20:04:11,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:11,650 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:11,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:11,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:11,655 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:11,663 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 [2022-11-18 20:04:11,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-18 20:04:11,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:11,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:11,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:11,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:11,679 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:11,679 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:11,698 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:11,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:11,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:11,703 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:11,707 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 [2022-11-18 20:04:11,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-18 20:04:11,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:11,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:11,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:11,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:11,730 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:11,730 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:11,746 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:11,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:11,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:11,752 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:11,759 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 [2022-11-18 20:04:11,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-18 20:04:11,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:11,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:11,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:11,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:11,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:11,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:04:11,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:11,790 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:04:11,803 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-18 20:04:11,803 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:04:11,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:11,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:11,809 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:11,810 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:04:11,811 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:04:11,811 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:04:11,811 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-18 20:04:11,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-18 20:04:11,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:11,816 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:04:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:11,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:11,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:11,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:11,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:11,877 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 [2022-11-18 20:04:11,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 85 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-18 20:04:11,908 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 85 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 160 states and 209 transitions. Complement of second has 7 states. [2022-11-18 20:04:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-18 20:04:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-18 20:04:11,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2022-11-18 20:04:11,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:11,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2022-11-18 20:04:11,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:11,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2022-11-18 20:04:11,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:11,911 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 209 transitions. [2022-11-18 20:04:11,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2022-11-18 20:04:11,914 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 126 states and 161 transitions. [2022-11-18 20:04:11,914 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2022-11-18 20:04:11,914 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2022-11-18 20:04:11,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 161 transitions. [2022-11-18 20:04:11,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:11,915 INFO L218 hiAutomatonCegarLoop]: Abstraction has 126 states and 161 transitions. [2022-11-18 20:04:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 161 transitions. [2022-11-18 20:04:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2022-11-18 20:04:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 119 states have internal predecessors, (155), 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) [2022-11-18 20:04:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2022-11-18 20:04:11,919 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 155 transitions. [2022-11-18 20:04:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:11,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:04:11,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:04:11,920 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2022-11-18 20:04:11,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:11,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:11,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:11,979 INFO L93 Difference]: Finished difference Result 138 states and 174 transitions. [2022-11-18 20:04:11,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 174 transitions. [2022-11-18 20:04:11,981 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2022-11-18 20:04:11,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 138 states and 174 transitions. [2022-11-18 20:04:11,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2022-11-18 20:04:11,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2022-11-18 20:04:11,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 138 states and 174 transitions. [2022-11-18 20:04:11,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:11,984 INFO L218 hiAutomatonCegarLoop]: Abstraction has 138 states and 174 transitions. [2022-11-18 20:04:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states and 174 transitions. [2022-11-18 20:04:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 117. [2022-11-18 20:04:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.2564102564102564) internal successors, (147), 116 states have internal predecessors, (147), 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) [2022-11-18 20:04:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2022-11-18 20:04:11,992 INFO L240 hiAutomatonCegarLoop]: Abstraction has 117 states and 147 transitions. [2022-11-18 20:04:11,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:04:11,993 INFO L428 stractBuchiCegarLoop]: Abstraction has 117 states and 147 transitions. [2022-11-18 20:04:11,993 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-18 20:04:11,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 147 transitions. [2022-11-18 20:04:11,994 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2022-11-18 20:04:11,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:11,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:11,997 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1, 1] [2022-11-18 20:04:11,997 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:04:11,997 INFO L748 eck$LassoCheckResult]: Stem: 2843#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2844#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2848#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2856#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2835#L12-2 assume !(0 == main_~i~0#1); 2836#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2950#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2851#L12 assume !(10 == main_~i~0#1); 2837#L12-2 assume !(0 == main_~i~0#1); 2838#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2847#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2949#L12 assume !(10 == main_~i~0#1); 2948#L12-2 assume !(0 == main_~i~0#1); 2947#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2945#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2944#L12 assume !(10 == main_~i~0#1); 2943#L12-2 assume !(0 == main_~i~0#1); 2941#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2942#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2946#L12 assume !(10 == main_~i~0#1); 2850#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2910#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2907#L12 assume !(10 == main_~i~0#1); 2885#L12-2 assume !(0 == main_~i~0#1); 2887#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2886#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2884#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2858#L12-2 [2022-11-18 20:04:11,997 INFO L750 eck$LassoCheckResult]: Loop: 2858#L12-2 assume !(0 == main_~i~0#1); 2853#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2854#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2882#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2858#L12-2 [2022-11-18 20:04:11,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:11,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1054469156, now seen corresponding path program 3 times [2022-11-18 20:04:11,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:11,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932753895] [2022-11-18 20:04:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:11,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:12,151 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:04:12,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:12,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932753895] [2022-11-18 20:04:12,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932753895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:12,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227257433] [2022-11-18 20:04:12,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:04:12,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:12,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:12,154 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:04:12,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-18 20:04:12,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:04:12,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:04:12,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:12,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 20:04:12,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 20:04:12,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227257433] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:04:12,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:04:12,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2022-11-18 20:04:12,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266387020] [2022-11-18 20:04:12,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:04:12,277 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:04:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2022-11-18 20:04:12,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:12,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463179256] [2022-11-18 20:04:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:12,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:12,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:12,318 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:12,318 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:12,318 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:12,318 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:12,319 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:04:12,319 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:12,319 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:12,319 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:12,319 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2022-11-18 20:04:12,319 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:12,320 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:12,321 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:12,324 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:12,329 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:12,332 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:12,402 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:12,402 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:04:12,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:12,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:12,404 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:12,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:12,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:12,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-11-18 20:04:12,438 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:12,439 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:12,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:12,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:12,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:12,444 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:12,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:12,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:12,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-11-18 20:04:12,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2022-11-18 20:04:12,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:12,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:12,479 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:12,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-11-18 20:04:12,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:04:12,487 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:12,584 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:04:12,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-11-18 20:04:12,587 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:12,587 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:12,587 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:12,587 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:12,588 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:04:12,588 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:12,588 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:12,588 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:12,588 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2022-11-18 20:04:12,588 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:12,588 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:12,589 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:12,597 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:12,606 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:12,612 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:12,685 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:12,685 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:04:12,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:12,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:12,686 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:12,699 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 [2022-11-18 20:04:12,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-11-18 20:04:12,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:12,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:12,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:12,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:12,714 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:12,714 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:12,738 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:12,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:12,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:12,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:12,743 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:12,751 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 [2022-11-18 20:04:12,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-11-18 20:04:12,765 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:12,765 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:12,765 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:12,765 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:12,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:12,766 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:04:12,767 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:12,776 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:04:12,779 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 20:04:12,779 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-18 20:04:12,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:12,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:12,783 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:12,787 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:04:12,787 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:04:12,787 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:04:12,787 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-18 20:04:12,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-11-18 20:04:12,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:12,792 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:04:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:12,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:12,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:12,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:12,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:12,884 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 [2022-11-18 20:04:12,884 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:12,913 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 164 states and 204 transitions. Complement of second has 7 states. [2022-11-18 20:04:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-18 20:04:12,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 28 letters. Loop has 4 letters. [2022-11-18 20:04:12,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:12,915 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:04:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:12,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:12,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:12,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:12,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:13,000 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-18 20:04:13,001 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:13,030 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 198 states and 239 transitions. Complement of second has 7 states. [2022-11-18 20:04:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-11-18 20:04:13,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 28 letters. Loop has 4 letters. [2022-11-18 20:04:13,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:13,034 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:04:13,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:13,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:13,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:13,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:04:13,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:13,130 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 2 loop predicates [2022-11-18 20:04:13,130 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:13,171 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 176 states and 219 transitions. Complement of second has 8 states. [2022-11-18 20:04:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-18 20:04:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-18 20:04:13,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 4 letters. [2022-11-18 20:04:13,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:13,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 32 letters. Loop has 4 letters. [2022-11-18 20:04:13,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:13,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 8 letters. [2022-11-18 20:04:13,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:13,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 176 states and 219 transitions. [2022-11-18 20:04:13,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 30 [2022-11-18 20:04:13,180 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 176 states to 121 states and 151 transitions. [2022-11-18 20:04:13,180 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2022-11-18 20:04:13,180 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-11-18 20:04:13,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 151 transitions. [2022-11-18 20:04:13,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:13,181 INFO L218 hiAutomatonCegarLoop]: Abstraction has 121 states and 151 transitions. [2022-11-18 20:04:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 151 transitions. [2022-11-18 20:04:13,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 76. [2022-11-18 20:04:13,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 76 states have (on average 1.25) internal successors, (95), 75 states have internal predecessors, (95), 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) [2022-11-18 20:04:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2022-11-18 20:04:13,183 INFO L240 hiAutomatonCegarLoop]: Abstraction has 76 states and 95 transitions. [2022-11-18 20:04:13,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:13,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:04:13,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:04:13,185 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 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) [2022-11-18 20:04:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:13,282 INFO L93 Difference]: Finished difference Result 158 states and 194 transitions. [2022-11-18 20:04:13,282 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 194 transitions. [2022-11-18 20:04:13,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2022-11-18 20:04:13,284 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 153 states and 188 transitions. [2022-11-18 20:04:13,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-11-18 20:04:13,285 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-18 20:04:13,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 153 states and 188 transitions. [2022-11-18 20:04:13,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:13,285 INFO L218 hiAutomatonCegarLoop]: Abstraction has 153 states and 188 transitions. [2022-11-18 20:04:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states and 188 transitions. [2022-11-18 20:04:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 104. [2022-11-18 20:04:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 103 states have internal predecessors, (126), 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) [2022-11-18 20:04:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2022-11-18 20:04:13,288 INFO L240 hiAutomatonCegarLoop]: Abstraction has 104 states and 126 transitions. [2022-11-18 20:04:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:04:13,289 INFO L428 stractBuchiCegarLoop]: Abstraction has 104 states and 126 transitions. [2022-11-18 20:04:13,289 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-18 20:04:13,289 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 126 transitions. [2022-11-18 20:04:13,290 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2022-11-18 20:04:13,290 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:13,290 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:13,291 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-18 20:04:13,291 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [11, 10, 10, 6, 5, 1, 1] [2022-11-18 20:04:13,291 INFO L748 eck$LassoCheckResult]: Stem: 4231#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4226#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4228#L12 assume !(10 == main_~i~0#1); 4251#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4249#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4241#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4242#L12 [2022-11-18 20:04:13,292 INFO L750 eck$LassoCheckResult]: Loop: 4242#L12 assume !(10 == main_~i~0#1); 4270#L12-2 assume !(0 == main_~i~0#1); 4269#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4268#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4267#L12 assume !(10 == main_~i~0#1); 4266#L12-2 assume !(0 == main_~i~0#1); 4265#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4264#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4263#L12 assume !(10 == main_~i~0#1); 4262#L12-2 assume !(0 == main_~i~0#1); 4261#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4260#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4259#L12 assume !(10 == main_~i~0#1); 4258#L12-2 assume !(0 == main_~i~0#1); 4257#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4256#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4255#L12 assume !(10 == main_~i~0#1); 4245#L12-2 assume !(0 == main_~i~0#1); 4248#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4247#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4244#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4246#L12-2 assume !(0 == main_~i~0#1); 4310#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4309#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4308#L12 assume !(10 == main_~i~0#1); 4307#L12-2 assume !(0 == main_~i~0#1); 4306#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4305#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4304#L12 assume !(10 == main_~i~0#1); 4303#L12-2 assume !(0 == main_~i~0#1); 4302#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4301#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4300#L12 assume !(10 == main_~i~0#1); 4299#L12-2 assume !(0 == main_~i~0#1); 4298#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4297#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4295#L12 assume !(10 == main_~i~0#1); 4294#L12-2 assume !(0 == main_~i~0#1); 4292#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4293#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4228#L12 assume !(10 == main_~i~0#1); 4251#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4249#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4241#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4242#L12 [2022-11-18 20:04:13,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:13,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 2 times [2022-11-18 20:04:13,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:13,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906427346] [2022-11-18 20:04:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:13,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:13,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:13,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:13,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:13,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1466490324, now seen corresponding path program 1 times [2022-11-18 20:04:13,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:13,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981556535] [2022-11-18 20:04:13,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:13,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:04:13,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:13,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981556535] [2022-11-18 20:04:13,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981556535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:13,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691927468] [2022-11-18 20:04:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:13,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:13,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:13,418 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:04:13,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-18 20:04:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:13,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:04:13,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:13,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:04:13,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:04:13,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691927468] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:04:13,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:04:13,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-11-18 20:04:13,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048045151] [2022-11-18 20:04:13,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:04:13,625 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:04:13,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:04:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:04:13,626 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. cyclomatic complexity: 26 Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 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) [2022-11-18 20:04:13,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:13,703 INFO L93 Difference]: Finished difference Result 198 states and 243 transitions. [2022-11-18 20:04:13,703 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 198 states and 243 transitions. [2022-11-18 20:04:13,704 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 72 [2022-11-18 20:04:13,705 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 198 states to 173 states and 213 transitions. [2022-11-18 20:04:13,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-11-18 20:04:13,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-18 20:04:13,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 213 transitions. [2022-11-18 20:04:13,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:13,706 INFO L218 hiAutomatonCegarLoop]: Abstraction has 173 states and 213 transitions. [2022-11-18 20:04:13,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 213 transitions. [2022-11-18 20:04:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2022-11-18 20:04:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 164 states have (on average 1.225609756097561) internal successors, (201), 163 states have internal predecessors, (201), 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) [2022-11-18 20:04:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 201 transitions. [2022-11-18 20:04:13,710 INFO L240 hiAutomatonCegarLoop]: Abstraction has 164 states and 201 transitions. [2022-11-18 20:04:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:04:13,711 INFO L428 stractBuchiCegarLoop]: Abstraction has 164 states and 201 transitions. [2022-11-18 20:04:13,711 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-18 20:04:13,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 164 states and 201 transitions. [2022-11-18 20:04:13,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2022-11-18 20:04:13,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:13,712 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:13,713 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-18 20:04:13,713 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2022-11-18 20:04:13,714 INFO L748 eck$LassoCheckResult]: Stem: 4806#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4807#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4801#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4803#L12 assume !(10 == main_~i~0#1); 4845#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4844#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4815#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4816#L12 [2022-11-18 20:04:13,714 INFO L750 eck$LassoCheckResult]: Loop: 4816#L12 assume !(10 == main_~i~0#1); 4837#L12-2 assume !(0 == main_~i~0#1); 4836#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4835#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4834#L12 assume !(10 == main_~i~0#1); 4833#L12-2 assume !(0 == main_~i~0#1); 4832#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4831#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4830#L12 assume !(10 == main_~i~0#1); 4829#L12-2 assume !(0 == main_~i~0#1); 4828#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4827#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4826#L12 assume !(10 == main_~i~0#1); 4825#L12-2 assume !(0 == main_~i~0#1); 4824#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4823#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4822#L12 assume !(10 == main_~i~0#1); 4819#L12-2 assume !(0 == main_~i~0#1); 4821#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4820#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4818#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4798#L12-2 assume !(0 == main_~i~0#1); 4799#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4804#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4805#L12 assume !(10 == main_~i~0#1); 4812#L12-2 assume !(0 == main_~i~0#1); 4961#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4960#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4959#L12 assume !(10 == main_~i~0#1); 4958#L12-2 assume !(0 == main_~i~0#1); 4957#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4956#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4955#L12 assume !(10 == main_~i~0#1); 4954#L12-2 assume !(0 == main_~i~0#1); 4953#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4952#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4951#L12 assume !(10 == main_~i~0#1); 4950#L12-2 assume !(0 == main_~i~0#1); 4949#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4948#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4947#L12 assume !(10 == main_~i~0#1); 4946#L12-2 assume !(0 == main_~i~0#1); 4945#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4944#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4943#L12 assume !(10 == main_~i~0#1); 4942#L12-2 assume !(0 == main_~i~0#1); 4941#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4940#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4939#L12 assume !(10 == main_~i~0#1); 4938#L12-2 assume !(0 == main_~i~0#1); 4937#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4936#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4935#L12 assume !(10 == main_~i~0#1); 4934#L12-2 assume !(0 == main_~i~0#1); 4933#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4932#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4852#L12 assume !(10 == main_~i~0#1); 4931#L12-2 assume !(0 == main_~i~0#1); 4896#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4851#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4803#L12 assume !(10 == main_~i~0#1); 4845#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4844#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4815#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4816#L12 [2022-11-18 20:04:13,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 3 times [2022-11-18 20:04:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:13,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764176509] [2022-11-18 20:04:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:13,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:13,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:13,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:13,722 INFO L85 PathProgramCache]: Analyzing trace with hash 726843037, now seen corresponding path program 2 times [2022-11-18 20:04:13,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:13,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120451088] [2022-11-18 20:04:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:13,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:13,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:13,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:13,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:13,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1110135673, now seen corresponding path program 4 times [2022-11-18 20:04:13,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:13,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225192909] [2022-11-18 20:04:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:13,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-18 20:04:13,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:13,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225192909] [2022-11-18 20:04:13,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225192909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:13,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076264695] [2022-11-18 20:04:13,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:04:13,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:13,899 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:04:13,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-11-18 20:04:13,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:04:13,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:04:13,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:04:13,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-18 20:04:14,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-18 20:04:14,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076264695] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:04:14,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:04:14,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-18 20:04:14,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126448291] [2022-11-18 20:04:14,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:04:14,578 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:14,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:14,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:14,579 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:14,579 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:04:14,579 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:14,579 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:14,579 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:14,579 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2022-11-18 20:04:14,579 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:14,579 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:14,580 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:14,586 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:14,589 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:14,595 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:14,644 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:14,644 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:04:14,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:14,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:14,653 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:14,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:14,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:14,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-11-18 20:04:14,686 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:14,687 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:14,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:14,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:14,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:14,691 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:14,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:14,699 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:14,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-11-18 20:04:14,723 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:04:14,723 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:04:14,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:14,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:14,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:14,728 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:14,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:04:14,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:14,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-11-18 20:04:14,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2022-11-18 20:04:14,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:14,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:14,762 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:14,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2022-11-18 20:04:14,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:04:14,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:04:14,779 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:04:14,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2022-11-18 20:04:14,782 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:04:14,782 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:04:14,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:04:14,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:04:14,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:04:14,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:14,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:04:14,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:04:14,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2022-11-18 20:04:14,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:04:14,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:04:14,784 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:14,799 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:14,802 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:14,807 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:04:14,852 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:04:14,852 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:04:14,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:14,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:14,853 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:14,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2022-11-18 20:04:14,860 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 [2022-11-18 20:04:14,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:14,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:14,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:14,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:14,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:14,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:04:14,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:14,890 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:14,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:14,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:14,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:14,897 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:14,903 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 [2022-11-18 20:04:14,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2022-11-18 20:04:14,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:14,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:14,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:14,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:14,919 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 20:04:14,919 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 20:04:14,938 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:04:14,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:14,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:14,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:14,943 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:14,951 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 [2022-11-18 20:04:14,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2022-11-18 20:04:14,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:04:14,964 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:04:14,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:04:14,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:04:14,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:04:14,966 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:04:14,966 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:04:14,986 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:04:14,988 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-18 20:04:14,988 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:04:14,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:04:14,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:14,992 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:14,994 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:04:14,994 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:04:14,994 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:04:14,994 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-18 20:04:14,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2022-11-18 20:04:14,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:14,998 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:04:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:15,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:15,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:15,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:04:15,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:04:15,272 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2022-11-18 20:04:15,272 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2022-11-18 20:04:15,404 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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 489 states and 580 transitions. Complement of second has 17 states. [2022-11-18 20:04:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:15,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2022-11-18 20:04:15,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2022-11-18 20:04:15,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 7 letters. Loop has 64 letters. [2022-11-18 20:04:15,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:15,406 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:04:15,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:15,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:15,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:15,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:04:15,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:04:15,649 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2022-11-18 20:04:15,649 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2022-11-18 20:04:15,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:15,983 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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 784 states and 937 transitions. Complement of second has 31 states. [2022-11-18 20:04:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2022-11-18 20:04:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 67 transitions. [2022-11-18 20:04:15,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 67 transitions. Stem has 7 letters. Loop has 64 letters. [2022-11-18 20:04:15,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:15,985 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:04:15,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:16,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:16,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:16,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:04:16,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:04:16,224 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 9 loop predicates [2022-11-18 20:04:16,224 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2022-11-18 20:04:16,529 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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 1329 states and 1557 transitions. Complement of second has 174 states. [2022-11-18 20:04:16,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2022-11-18 20:04:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 76 transitions. [2022-11-18 20:04:16,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 76 transitions. Stem has 7 letters. Loop has 64 letters. [2022-11-18 20:04:16,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:16,534 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:04:16,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:16,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:04:16,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:16,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:04:16,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 20:04:16,793 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2022-11-18 20:04:16,793 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2022-11-18 20:04:17,154 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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 1639 states and 1887 transitions. Complement of second has 195 states. [2022-11-18 20:04:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2022-11-18 20:04:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2022-11-18 20:04:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 78 transitions. [2022-11-18 20:04:17,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 7 letters. Loop has 64 letters. [2022-11-18 20:04:17,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:17,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 71 letters. Loop has 64 letters. [2022-11-18 20:04:17,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:17,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 7 letters. Loop has 128 letters. [2022-11-18 20:04:17,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:04:17,162 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1639 states and 1887 transitions. [2022-11-18 20:04:17,176 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 307 [2022-11-18 20:04:17,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1639 states to 522 states and 614 transitions. [2022-11-18 20:04:17,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-18 20:04:17,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2022-11-18 20:04:17,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 614 transitions. [2022-11-18 20:04:17,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:17,180 INFO L218 hiAutomatonCegarLoop]: Abstraction has 522 states and 614 transitions. [2022-11-18 20:04:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 614 transitions. [2022-11-18 20:04:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 163. [2022-11-18 20:04:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 162 states have internal predecessors, (197), 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) [2022-11-18 20:04:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2022-11-18 20:04:17,187 INFO L240 hiAutomatonCegarLoop]: Abstraction has 163 states and 197 transitions. [2022-11-18 20:04:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:17,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:04:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:04:17,188 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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) [2022-11-18 20:04:17,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:17,261 INFO L93 Difference]: Finished difference Result 398 states and 454 transitions. [2022-11-18 20:04:17,262 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 454 transitions. [2022-11-18 20:04:17,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 195 [2022-11-18 20:04:17,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 298 states and 353 transitions. [2022-11-18 20:04:17,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 79 [2022-11-18 20:04:17,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2022-11-18 20:04:17,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 298 states and 353 transitions. [2022-11-18 20:04:17,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:17,272 INFO L218 hiAutomatonCegarLoop]: Abstraction has 298 states and 353 transitions. [2022-11-18 20:04:17,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states and 353 transitions. [2022-11-18 20:04:17,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 152. [2022-11-18 20:04:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 151 states have internal predecessors, (183), 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) [2022-11-18 20:04:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2022-11-18 20:04:17,278 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 183 transitions. [2022-11-18 20:04:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:04:17,279 INFO L428 stractBuchiCegarLoop]: Abstraction has 152 states and 183 transitions. [2022-11-18 20:04:17,279 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-11-18 20:04:17,279 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 152 states and 183 transitions. [2022-11-18 20:04:17,280 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2022-11-18 20:04:17,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:17,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:17,286 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-18 20:04:17,286 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [21, 20, 19, 11, 10, 2, 1] [2022-11-18 20:04:17,286 INFO L748 eck$LassoCheckResult]: Stem: 11576#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 11577#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 11581#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11591#L12 assume !(10 == main_~i~0#1); 11594#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11592#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11585#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11586#L12 [2022-11-18 20:04:17,289 INFO L750 eck$LassoCheckResult]: Loop: 11586#L12 assume !(10 == main_~i~0#1); 11674#L12-2 assume !(0 == main_~i~0#1); 11673#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11672#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11671#L12 assume !(10 == main_~i~0#1); 11670#L12-2 assume !(0 == main_~i~0#1); 11669#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11668#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11667#L12 assume !(10 == main_~i~0#1); 11666#L12-2 assume !(0 == main_~i~0#1); 11665#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11664#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11663#L12 assume !(10 == main_~i~0#1); 11660#L12-2 assume !(0 == main_~i~0#1); 11662#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11661#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11659#L12 assume !(10 == main_~i~0#1); 11568#L12-2 assume !(0 == main_~i~0#1); 11569#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11572#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11573#L12 assume !(10 == main_~i~0#1); 11658#L12-2 assume !(0 == main_~i~0#1); 11657#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11656#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11655#L12 assume !(10 == main_~i~0#1); 11654#L12-2 assume !(0 == main_~i~0#1); 11653#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11652#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11651#L12 assume !(10 == main_~i~0#1); 11650#L12-2 assume !(0 == main_~i~0#1); 11649#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11648#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11647#L12 assume !(10 == main_~i~0#1); 11646#L12-2 assume !(0 == main_~i~0#1); 11645#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11644#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11643#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11642#L12-2 assume !(0 == main_~i~0#1); 11641#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11640#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11639#L12 assume !(10 == main_~i~0#1); 11638#L12-2 assume !(0 == main_~i~0#1); 11637#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11636#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11635#L12 assume !(10 == main_~i~0#1); 11634#L12-2 assume !(0 == main_~i~0#1); 11633#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11632#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11631#L12 assume !(10 == main_~i~0#1); 11630#L12-2 assume !(0 == main_~i~0#1); 11629#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11628#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11627#L12 assume !(10 == main_~i~0#1); 11626#L12-2 assume !(0 == main_~i~0#1); 11625#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11624#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11623#L12 assume !(10 == main_~i~0#1); 11622#L12-2 assume !(0 == main_~i~0#1); 11621#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11620#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11619#L12 assume !(10 == main_~i~0#1); 11618#L12-2 assume !(0 == main_~i~0#1); 11617#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11616#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11615#L12 assume !(10 == main_~i~0#1); 11614#L12-2 assume !(0 == main_~i~0#1); 11613#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11612#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11611#L12 assume !(10 == main_~i~0#1); 11610#L12-2 assume !(0 == main_~i~0#1); 11609#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11608#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11604#L12 assume !(10 == main_~i~0#1); 11606#L12-2 assume !(0 == main_~i~0#1); 11605#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11603#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11602#L12 assume !(10 == main_~i~0#1); 11600#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11601#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11677#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11587#L12 assume !(10 == main_~i~0#1); 11597#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11592#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11585#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11586#L12 [2022-11-18 20:04:17,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:17,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 4 times [2022-11-18 20:04:17,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:17,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299083324] [2022-11-18 20:04:17,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:17,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:17,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:17,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1840948782, now seen corresponding path program 3 times [2022-11-18 20:04:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:17,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834271796] [2022-11-18 20:04:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:17,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-18 20:04:17,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:17,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834271796] [2022-11-18 20:04:17,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834271796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:17,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:17,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:04:17,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769438924] [2022-11-18 20:04:17,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:17,410 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:04:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:17,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:04:17,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:04:17,411 INFO L87 Difference]: Start difference. First operand 152 states and 183 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:04:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:17,432 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2022-11-18 20:04:17,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 152 states and 181 transitions. [2022-11-18 20:04:17,433 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2022-11-18 20:04:17,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 152 states to 144 states and 170 transitions. [2022-11-18 20:04:17,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2022-11-18 20:04:17,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2022-11-18 20:04:17,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 170 transitions. [2022-11-18 20:04:17,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:04:17,435 INFO L218 hiAutomatonCegarLoop]: Abstraction has 144 states and 170 transitions. [2022-11-18 20:04:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states and 170 transitions. [2022-11-18 20:04:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 101. [2022-11-18 20:04:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 100 states have internal predecessors, (117), 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) [2022-11-18 20:04:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2022-11-18 20:04:17,438 INFO L240 hiAutomatonCegarLoop]: Abstraction has 101 states and 117 transitions. [2022-11-18 20:04:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:04:17,439 INFO L428 stractBuchiCegarLoop]: Abstraction has 101 states and 117 transitions. [2022-11-18 20:04:17,439 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2022-11-18 20:04:17,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 101 states and 117 transitions. [2022-11-18 20:04:17,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2022-11-18 20:04:17,440 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:04:17,440 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:04:17,441 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 5, 4, 1, 1, 1] [2022-11-18 20:04:17,441 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2022-11-18 20:04:17,441 INFO L748 eck$LassoCheckResult]: Stem: 11886#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 11887#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 11890#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11899#L12 assume !(10 == main_~i~0#1); 11900#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11901#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11882#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11883#L12 assume !(10 == main_~i~0#1); 11935#L12-2 assume !(0 == main_~i~0#1); 11934#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11933#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11932#L12 assume !(10 == main_~i~0#1); 11931#L12-2 assume !(0 == main_~i~0#1); 11930#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11929#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11928#L12 assume !(10 == main_~i~0#1); 11927#L12-2 assume !(0 == main_~i~0#1); 11926#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11925#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11924#L12 assume !(10 == main_~i~0#1); 11920#L12-2 assume !(0 == main_~i~0#1); 11923#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11922#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11919#L12 assume !(10 == main_~i~0#1); 11902#L12-2 [2022-11-18 20:04:17,441 INFO L750 eck$LassoCheckResult]: Loop: 11902#L12-2 assume !(0 == main_~i~0#1); 11895#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11896#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11921#L12 assume !(10 == main_~i~0#1); 11918#L12-2 assume !(0 == main_~i~0#1); 11917#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11916#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11915#L12 assume !(10 == main_~i~0#1); 11914#L12-2 assume !(0 == main_~i~0#1); 11913#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11912#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11911#L12 assume !(10 == main_~i~0#1); 11910#L12-2 assume !(0 == main_~i~0#1); 11909#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11907#L12 assume !(10 == main_~i~0#1); 11906#L12-2 assume !(0 == main_~i~0#1); 11905#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11904#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11903#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11879#L12-2 assume !(0 == main_~i~0#1); 11880#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11884#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11885#L12 assume !(10 == main_~i~0#1); 11977#L12-2 assume !(0 == main_~i~0#1); 11976#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11975#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11974#L12 assume !(10 == main_~i~0#1); 11973#L12-2 assume !(0 == main_~i~0#1); 11972#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11971#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11970#L12 assume !(10 == main_~i~0#1); 11969#L12-2 assume !(0 == main_~i~0#1); 11968#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11967#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11966#L12 assume !(10 == main_~i~0#1); 11965#L12-2 assume !(0 == main_~i~0#1); 11964#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11963#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11962#L12 assume !(10 == main_~i~0#1); 11961#L12-2 assume !(0 == main_~i~0#1); 11960#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11959#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11958#L12 assume !(10 == main_~i~0#1); 11957#L12-2 assume !(0 == main_~i~0#1); 11956#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11955#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11954#L12 assume !(10 == main_~i~0#1); 11953#L12-2 assume !(0 == main_~i~0#1); 11952#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11951#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11950#L12 assume !(10 == main_~i~0#1); 11949#L12-2 assume !(0 == main_~i~0#1); 11948#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11947#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11944#L12 assume !(10 == main_~i~0#1); 11946#L12-2 assume !(0 == main_~i~0#1); 11945#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11943#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11942#L12 assume !(10 == main_~i~0#1); 11892#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11941#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11938#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11936#L12 assume !(10 == main_~i~0#1); 11935#L12-2 assume !(0 == main_~i~0#1); 11934#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11933#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11932#L12 assume !(10 == main_~i~0#1); 11931#L12-2 assume !(0 == main_~i~0#1); 11930#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11929#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11928#L12 assume !(10 == main_~i~0#1); 11927#L12-2 assume !(0 == main_~i~0#1); 11926#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11925#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11924#L12 assume !(10 == main_~i~0#1); 11920#L12-2 assume !(0 == main_~i~0#1); 11923#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11922#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11919#L12 assume !(10 == main_~i~0#1); 11902#L12-2 [2022-11-18 20:04:17,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash 781927031, now seen corresponding path program 1 times [2022-11-18 20:04:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:17,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832621760] [2022-11-18 20:04:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:17,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:17,447 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:17,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:17,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:17,452 INFO L85 PathProgramCache]: Analyzing trace with hash 921517193, now seen corresponding path program 4 times [2022-11-18 20:04:17,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:17,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279647652] [2022-11-18 20:04:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:17,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:17,464 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:17,476 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:17,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash 933372671, now seen corresponding path program 5 times [2022-11-18 20:04:17,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:17,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141435678] [2022-11-18 20:04:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:17,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:17,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:17,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:18,316 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:18,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:04:18 BoogieIcfgContainer [2022-11-18 20:04:18,384 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 20:04:18,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:04:18,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:04:18,386 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:04:18,387 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:04:04" (3/4) ... [2022-11-18 20:04:18,389 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-18 20:04:18,468 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:04:18,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:04:18,469 INFO L158 Benchmark]: Toolchain (without parser) took 14474.26ms. Allocated memory was 104.9MB in the beginning and 192.9MB in the end (delta: 88.1MB). Free memory was 75.1MB in the beginning and 155.6MB in the end (delta: -80.5MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2022-11-18 20:04:18,470 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 104.9MB. Free memory was 60.8MB in the beginning and 60.7MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:04:18,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.39ms. Allocated memory is still 104.9MB. Free memory was 75.1MB in the beginning and 83.5MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:04:18,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.81ms. Allocated memory is still 104.9MB. Free memory was 83.5MB in the beginning and 82.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:04:18,472 INFO L158 Benchmark]: Boogie Preprocessor took 19.98ms. Allocated memory is still 104.9MB. Free memory was 82.4MB in the beginning and 81.4MB in the end (delta: 925.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:04:18,472 INFO L158 Benchmark]: RCFGBuilder took 283.41ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 73.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:04:18,472 INFO L158 Benchmark]: BuchiAutomizer took 13730.35ms. Allocated memory was 104.9MB in the beginning and 192.9MB in the end (delta: 88.1MB). Free memory was 72.7MB in the beginning and 158.8MB in the end (delta: -86.1MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2022-11-18 20:04:18,473 INFO L158 Benchmark]: Witness Printer took 83.09ms. Allocated memory is still 192.9MB. Free memory was 158.8MB in the beginning and 155.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:04:18,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 104.9MB. Free memory was 60.8MB in the beginning and 60.7MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.39ms. Allocated memory is still 104.9MB. Free memory was 75.1MB in the beginning and 83.5MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.81ms. Allocated memory is still 104.9MB. Free memory was 83.5MB in the beginning and 82.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.98ms. Allocated memory is still 104.9MB. Free memory was 82.4MB in the beginning and 81.4MB in the end (delta: 925.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 283.41ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 73.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 13730.35ms. Allocated memory was 104.9MB in the beginning and 192.9MB in the end (delta: 88.1MB). Free memory was 72.7MB in the beginning and 158.8MB in the end (delta: -86.1MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * Witness Printer took 83.09ms. Allocated memory is still 192.9MB. Free memory was 158.8MB in the beginning and 155.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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 18 terminating modules (9 trivial, 5 deterministic, 4 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One nondeterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 16 locations. 9 modules have a trivial ranking function, the largest among these consists of 13 locations. The remainder module has 101 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.5s and 12 iterations. TraceHistogramMax:21. Analysis of lassos took 8.7s. Construction of modules took 0.8s. Büchi inclusion checks took 3.7s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 18. Automata minimization 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 766 StatesRemovedByMinimization, 18 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 3, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 220/480 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 483 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 465 mSDsluCounter, 237 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 923 IncrementalHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 204 mSDtfsCounter, 923 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax174 hnf100 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq187 hnf91 smp95 dnf122 smp94 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 108ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 VAL [up=0] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=0, up=0] [L12] COND FALSE !(i == 10) VAL [i=0, up=0] [L15] COND TRUE i == 0 [L16] up = 1 VAL [i=0, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=1, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=1, up=1] [L12] COND FALSE !(i == 10) VAL [i=1, up=1] [L15] COND FALSE !(i == 0) VAL [i=1, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=2, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=2, up=1] [L12] COND FALSE !(i == 10) VAL [i=2, up=1] [L15] COND FALSE !(i == 0) VAL [i=2, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=3, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=3, up=1] [L12] COND FALSE !(i == 10) VAL [i=3, up=1] [L15] COND FALSE !(i == 0) VAL [i=3, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=4, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=4, up=1] [L12] COND FALSE !(i == 10) VAL [i=4, up=1] [L15] COND FALSE !(i == 0) VAL [i=4, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=5, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=5, up=1] [L12] COND FALSE !(i == 10) VAL [i=5, up=1] Loop: [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 VAL [up=0] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=0, up=0] [L12] COND FALSE !(i == 10) VAL [i=0, up=0] [L15] COND TRUE i == 0 [L16] up = 1 VAL [i=0, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=1, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=1, up=1] [L12] COND FALSE !(i == 10) VAL [i=1, up=1] [L15] COND FALSE !(i == 0) VAL [i=1, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=2, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=2, up=1] [L12] COND FALSE !(i == 10) VAL [i=2, up=1] [L15] COND FALSE !(i == 0) VAL [i=2, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=3, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=3, up=1] [L12] COND FALSE !(i == 10) VAL [i=3, up=1] [L15] COND FALSE !(i == 0) VAL [i=3, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=4, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=4, up=1] [L12] COND FALSE !(i == 10) VAL [i=4, up=1] [L15] COND FALSE !(i == 0) VAL [i=4, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=5, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=5, up=1] [L12] COND FALSE !(i == 10) VAL [i=5, up=1] Loop: [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-18 20:04:18,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:18,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:18,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:19,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-11-18 20:04:19,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63e6bda-18ee-4704-83f8-5075d01aa630/bin/uautomizer-TMbwUNV5ro/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)