./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Piecewise.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Piecewise.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8 --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 ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 --- 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-2329fc7 [2022-12-13 11:43:03,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:43:03,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:43:03,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:43:03,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:43:03,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:43:03,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:43:03,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:43:03,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:43:03,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:43:03,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:43:03,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:43:03,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:43:03,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:43:03,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:43:03,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:43:03,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:43:03,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:43:03,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:43:03,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:43:03,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:43:03,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:43:03,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:43:03,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:43:03,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:43:03,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:43:03,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:43:03,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:43:03,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:43:03,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:43:03,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:43:03,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:43:03,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:43:03,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:43:03,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:43:03,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:43:03,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:43:03,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:43:03,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:43:03,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:43:03,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:43:03,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-12-13 11:43:03,304 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:43:03,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:43:03,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:43:03,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:43:03,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:43:03,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:43:03,306 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:43:03,307 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 11:43:03,307 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 11:43:03,307 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 11:43:03,307 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 11:43:03,307 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 11:43:03,308 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 11:43:03,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:43:03,308 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:43:03,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:43:03,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:43:03,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 11:43:03,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 11:43:03,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 11:43:03,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:43:03,309 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 11:43:03,309 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:43:03,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 11:43:03,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:43:03,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:43:03,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:43:03,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:43:03,311 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 11:43:03,312 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_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 [2022-12-13 11:43:03,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:43:03,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:43:03,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:43:03,550 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:43:03,550 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:43:03,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-crafted/Piecewise.c [2022-12-13 11:43:06,145 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:43:06,282 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:43:06,282 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/sv-benchmarks/c/termination-crafted/Piecewise.c [2022-12-13 11:43:06,287 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/data/99955166a/c455160da6074acd98fed4412606d4d8/FLAGcd36e80fa [2022-12-13 11:43:06,297 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/data/99955166a/c455160da6074acd98fed4412606d4d8 [2022-12-13 11:43:06,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:43:06,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:43:06,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:43:06,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:43:06,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:43:06,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f971cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06, skipping insertion in model container [2022-12-13 11:43:06,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:43:06,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:43:06,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:43:06,455 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:43:06,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:43:06,473 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:43:06,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06 WrapperNode [2022-12-13 11:43:06,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:43:06,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:43:06,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:43:06,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:43:06,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,497 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-12-13 11:43:06,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:43:06,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:43:06,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:43:06,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:43:06,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,511 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:43:06,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:43:06,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:43:06,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:43:06,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (1/1) ... [2022-12-13 11:43:06,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:06,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:06,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 11:43:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:43:06,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:43:06,630 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:43:06,632 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:43:06,679 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:43:06,683 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:43:06,683 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:43:06,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:43:06 BoogieIcfgContainer [2022-12-13 11:43:06,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:43:06,685 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 11:43:06,685 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 11:43:06,688 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 11:43:06,689 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 11:43:06,689 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 11:43:06" (1/3) ... [2022-12-13 11:43:06,689 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5bc7c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 11:43:06, skipping insertion in model container [2022-12-13 11:43:06,690 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 11:43:06,690 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:06" (2/3) ... [2022-12-13 11:43:06,690 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5bc7c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 11:43:06, skipping insertion in model container [2022-12-13 11:43:06,690 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 11:43:06,690 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:43:06" (3/3) ... [2022-12-13 11:43:06,691 INFO L332 chiAutomizerObserver]: Analyzing ICFG Piecewise.c [2022-12-13 11:43:06,732 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 11:43:06,732 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 11:43:06,733 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 11:43:06,733 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 11:43:06,733 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 11:43:06,733 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 11:43:06,733 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 11:43:06,733 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 11:43:06,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:06,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-12-13 11:43:06,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 11:43:06,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 11:43:06,754 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 11:43:06,754 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 11:43:06,754 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 11:43:06,754 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:06,755 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-12-13 11:43:06,755 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 11:43:06,755 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 11:43:06,755 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 11:43:06,755 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 11:43:06,760 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L26-2true [2022-12-13 11:43:06,761 INFO L750 eck$LassoCheckResult]: Loop: 4#L26-2true assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 6#L23true assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 4#L26-2true [2022-12-13 11:43:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:06,765 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-12-13 11:43:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:06,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133131217] [2022-12-13 11:43:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:06,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:06,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:06,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-12-13 11:43:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:06,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186701053] [2022-12-13 11:43:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:06,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:06,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:06,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:06,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:06,861 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-12-13 11:43:06,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:06,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056645403] [2022-12-13 11:43:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:06,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:06,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:06,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:06,946 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:06,947 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:06,947 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:06,947 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:06,947 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 11:43:06,947 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:06,947 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:06,948 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:06,948 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2022-12-13 11:43:06,948 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:06,948 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:06,966 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:06,978 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:06,983 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:07,054 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:07,054 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 11:43:07,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 11:43:07,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:07,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:07,082 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:07,082 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: [] [2022-12-13 11:43:07,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:07,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 11:43:07,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:07,090 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:07,108 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:07,108 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: [] [2022-12-13 11:43:07,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 11:43:07,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 11:43:07,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:07,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:07,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 11:43:07,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,138 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 11:43:07,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 11:43:07,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:07,170 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 11:43:07,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:07,173 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:07,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:07,173 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:07,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:07,173 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 11:43:07,173 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,173 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:07,174 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:07,174 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2022-12-13 11:43:07,174 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:07,174 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:07,180 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:07,184 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:07,187 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:07,234 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:07,238 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 11:43:07,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,240 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 11:43:07,242 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 [2022-12-13 11:43:07,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:07,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:07,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:07,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:07,257 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 11:43:07,257 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 11:43:07,262 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 11:43:07,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 11:43:07,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,266 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 11:43:07,268 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 [2022-12-13 11:43:07,278 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:07,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:07,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:07,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:07,281 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 11:43:07,281 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 11:43:07,286 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 11:43:07,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 11:43:07,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,291 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 11:43:07,293 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 [2022-12-13 11:43:07,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:07,304 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 11:43:07,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:07,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:07,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:07,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 11:43:07,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 11:43:07,310 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 11:43:07,315 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 11:43:07,315 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 11:43:07,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,347 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 11:43:07,349 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 11:43:07,349 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 11:43:07,349 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 11:43:07,350 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-12-13 11:43:07,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 11:43:07,355 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 11:43:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:07,382 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:43:07,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:07,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:43:07,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:07,435 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 [2022-12-13 11:43:07,437 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:07,477 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 38 states and 49 transitions. Complement of second has 8 states. [2022-12-13 11:43:07,479 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 [2022-12-13 11:43:07,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2022-12-13 11:43:07,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 2 letters. [2022-12-13 11:43:07,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:07,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2022-12-13 11:43:07,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:07,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2022-12-13 11:43:07,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:07,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 49 transitions. [2022-12-13 11:43:07,488 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-12-13 11:43:07,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 14 states and 20 transitions. [2022-12-13 11:43:07,491 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-12-13 11:43:07,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-12-13 11:43:07,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-12-13 11:43:07,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 11:43:07,492 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-12-13 11:43:07,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-12-13 11:43:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-12-13 11:43:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-12-13 11:43:07,512 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-12-13 11:43:07,513 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-12-13 11:43:07,513 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 11:43:07,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-12-13 11:43:07,513 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-12-13 11:43:07,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 11:43:07,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 11:43:07,514 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 11:43:07,514 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 11:43:07,514 INFO L748 eck$LassoCheckResult]: Stem: 90#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 91#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 97#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 87#L23 [2022-12-13 11:43:07,514 INFO L750 eck$LassoCheckResult]: Loop: 87#L23 assume !(main_~q~0#1 < main_~p~0#1); 92#L26 assume !(main_~p~0#1 < main_~q~0#1); 86#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 87#L23 [2022-12-13 11:43:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-12-13 11:43:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:07,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891513070] [2022-12-13 11:43:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:07,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:07,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:07,522 INFO L85 PathProgramCache]: Analyzing trace with hash 45829, now seen corresponding path program 1 times [2022-12-13 11:43:07,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:07,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494553091] [2022-12-13 11:43:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:07,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:07,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:07,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494553091] [2022-12-13 11:43:07,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494553091] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:43:07,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:43:07,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:43:07,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102962206] [2022-12-13 11:43:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:43:07,565 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 11:43:07,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:07,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:43:07,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:43:07,568 INFO L87 Difference]: Start difference. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-12-13 11:43:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:43:07,580 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2022-12-13 11:43:07,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2022-12-13 11:43:07,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-12-13 11:43:07,582 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2022-12-13 11:43:07,582 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-12-13 11:43:07,582 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-12-13 11:43:07,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-12-13 11:43:07,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 11:43:07,583 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-12-13 11:43:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-12-13 11:43:07,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-12-13 11:43:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2022-12-13 11:43:07,584 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-12-13 11:43:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:43:07,585 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-12-13 11:43:07,585 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 11:43:07,586 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2022-12-13 11:43:07,586 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-12-13 11:43:07,586 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 11:43:07,586 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 11:43:07,586 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-12-13 11:43:07,587 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 11:43:07,587 INFO L748 eck$LassoCheckResult]: Stem: 126#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 127#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 128#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 123#L23 assume !(main_~q~0#1 < main_~p~0#1); 125#L26 [2022-12-13 11:43:07,587 INFO L750 eck$LassoCheckResult]: Loop: 125#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 120#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 121#L23 assume !(main_~q~0#1 < main_~p~0#1); 125#L26 [2022-12-13 11:43:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:07,587 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-12-13 11:43:07,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:07,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733536790] [2022-12-13 11:43:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:07,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:07,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:07,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:07,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 1 times [2022-12-13 11:43:07,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:07,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554420731] [2022-12-13 11:43:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:07,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:07,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:07,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:07,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:07,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 1 times [2022-12-13 11:43:07,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:07,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569165721] [2022-12-13 11:43:07,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:07,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:07,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:07,615 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:07,656 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:07,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:07,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:07,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:07,656 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 11:43:07,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,657 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:07,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:07,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2022-12-13 11:43:07,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:07,657 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:07,659 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:07,661 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:07,664 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:07,721 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:07,721 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 11:43:07,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,722 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 11:43:07,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:07,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:07,742 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:07,742 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: [] [2022-12-13 11:43:07,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 11:43:07,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,747 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 11:43:07,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:07,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:07,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:07,766 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 11:43:07,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 11:43:07,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,771 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 11:43:07,773 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:07,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:07,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 11:43:07,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,789 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 11:43:07,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 11:43:07,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:07,913 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 11:43:07,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 11:43:07,917 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:07,917 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:07,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:07,917 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:07,917 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 11:43:07,917 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,917 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:07,917 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:07,917 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2022-12-13 11:43:07,917 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:07,918 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:07,919 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:07,922 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:07,933 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:07,982 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:07,982 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 11:43:07,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:07,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:07,983 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:07,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 11:43:07,985 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 [2022-12-13 11:43:07,995 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:07,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:07,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:07,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:07,998 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 11:43:07,998 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 11:43:08,002 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 11:43:08,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 11:43:08,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,006 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 11:43:08,008 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 [2022-12-13 11:43:08,018 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:08,018 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 11:43:08,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:08,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:08,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:08,020 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 11:43:08,020 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 11:43:08,023 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 11:43:08,027 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 11:43:08,027 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 11:43:08,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,028 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 11:43:08,030 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 11:43:08,030 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 11:43:08,030 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 11:43:08,030 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2022-12-13 11:43:08,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:08,034 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 11:43:08,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:08,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:43:08,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:08,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:43:08,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:08,088 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 [2022-12-13 11:43:08,089 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 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) [2022-12-13 11:43:08,105 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. 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 17 states and 21 transitions. Complement of second has 7 states. [2022-12-13 11:43:08,106 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 [2022-12-13 11:43:08,107 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) [2022-12-13 11:43:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-12-13 11:43:08,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2022-12-13 11:43:08,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2022-12-13 11:43:08,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2022-12-13 11:43:08,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,108 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2022-12-13 11:43:08,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-12-13 11:43:08,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 18 transitions. [2022-12-13 11:43:08,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-12-13 11:43:08,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-12-13 11:43:08,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2022-12-13 11:43:08,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 11:43:08,109 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 18 transitions. [2022-12-13 11:43:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2022-12-13 11:43:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-12-13 11:43:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 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) [2022-12-13 11:43:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2022-12-13 11:43:08,111 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-12-13 11:43:08,111 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-12-13 11:43:08,111 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 11:43:08,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2022-12-13 11:43:08,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-12-13 11:43:08,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 11:43:08,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 11:43:08,112 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-12-13 11:43:08,112 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 11:43:08,113 INFO L748 eck$LassoCheckResult]: Stem: 196#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 197#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 201#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 194#L23 assume !(main_~q~0#1 < main_~p~0#1); 203#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 200#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 202#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 191#L26-2 [2022-12-13 11:43:08,113 INFO L750 eck$LassoCheckResult]: Loop: 191#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 192#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 191#L26-2 [2022-12-13 11:43:08,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722638, now seen corresponding path program 1 times [2022-12-13 11:43:08,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:08,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3090251] [2022-12-13 11:43:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:08,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,121 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:08,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2022-12-13 11:43:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:08,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962751458] [2022-12-13 11:43:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:08,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:08,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash 642700593, now seen corresponding path program 2 times [2022-12-13 11:43:08,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:08,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520834226] [2022-12-13 11:43:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:08,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,144 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:08,173 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:08,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:08,173 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:08,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:08,174 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 11:43:08,174 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,174 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:08,174 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:08,174 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2022-12-13 11:43:08,174 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:08,174 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:08,175 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,178 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,184 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,215 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:08,215 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 11:43:08,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 11:43:08,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:08,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:08,240 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:08,240 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: [] [2022-12-13 11:43:08,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 11:43:08,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,244 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-12-13 11:43:08,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:08,246 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:08,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2022-12-13 11:43:08,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,264 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 11:43:08,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 11:43:08,266 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:08,289 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 11:43:08,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 11:43:08,292 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:08,292 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:08,292 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:08,292 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:08,292 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 11:43:08,292 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,293 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:08,293 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:08,293 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2022-12-13 11:43:08,293 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:08,293 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:08,294 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,302 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,304 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,335 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:08,335 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 11:43:08,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,336 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 11:43:08,338 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 [2022-12-13 11:43:08,348 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:08,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 11:43:08,348 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:08,348 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:08,348 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:08,349 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 11:43:08,349 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 11:43:08,352 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 11:43:08,354 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 11:43:08,354 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 11:43:08,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,356 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 11:43:08,357 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 11:43:08,357 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 11:43:08,357 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 11:43:08,357 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-12-13 11:43:08,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 11:43:08,360 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 11:43:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:08,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:43:08,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:08,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 11:43:08,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-12-13 11:43:08,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 11:43:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:08,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:43:08,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:08,402 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 [2022-12-13 11:43:08,402 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:08,412 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 35 transitions. Complement of second has 5 states. [2022-12-13 11:43:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-12-13 11:43:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-12-13 11:43:08,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2022-12-13 11:43:08,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2022-12-13 11:43:08,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2022-12-13 11:43:08,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2022-12-13 11:43:08,415 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-12-13 11:43:08,415 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 24 states and 31 transitions. [2022-12-13 11:43:08,415 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-12-13 11:43:08,415 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-12-13 11:43:08,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2022-12-13 11:43:08,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 11:43:08,415 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-12-13 11:43:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2022-12-13 11:43:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-12-13 11:43:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 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) [2022-12-13 11:43:08,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-12-13 11:43:08,417 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-12-13 11:43:08,417 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-12-13 11:43:08,417 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 11:43:08,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2022-12-13 11:43:08,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-12-13 11:43:08,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 11:43:08,417 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 11:43:08,418 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1] [2022-12-13 11:43:08,418 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 11:43:08,418 INFO L748 eck$LassoCheckResult]: Stem: 286#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 287#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 279#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 280#L23 assume !(main_~q~0#1 < main_~p~0#1); 293#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 290#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 291#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 292#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 284#L23 assume !(main_~q~0#1 < main_~p~0#1); 285#L26 [2022-12-13 11:43:08,418 INFO L750 eck$LassoCheckResult]: Loop: 285#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 288#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 297#L23 assume !(main_~q~0#1 < main_~p~0#1); 285#L26 [2022-12-13 11:43:08,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,418 INFO L85 PathProgramCache]: Analyzing trace with hash 642700595, now seen corresponding path program 3 times [2022-12-13 11:43:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:08,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055958759] [2022-12-13 11:43:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:08,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 2 times [2022-12-13 11:43:08,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:08,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524674116] [2022-12-13 11:43:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:08,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,432 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:08,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash -270761307, now seen corresponding path program 4 times [2022-12-13 11:43:08,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:08,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581426366] [2022-12-13 11:43:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:08,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,440 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:08,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:08,476 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:08,477 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:08,477 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:08,477 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:08,477 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 11:43:08,477 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,477 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:08,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:08,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2022-12-13 11:43:08,477 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:08,477 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:08,478 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,480 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,482 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,531 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:08,531 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 11:43:08,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,532 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 11:43:08,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:08,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:08,552 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:08,552 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: [] [2022-12-13 11:43:08,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 11:43:08,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,556 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 11:43:08,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:08,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:08,575 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:08,575 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: [] [2022-12-13 11:43:08,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-12-13 11:43:08,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,578 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 11:43:08,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:08,581 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:08,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 11:43:08,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,596 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 11:43:08,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 11:43:08,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:08,710 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 11:43:08,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-12-13 11:43:08,713 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:08,714 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:08,714 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:08,714 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:08,714 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 11:43:08,714 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,714 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:08,714 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:08,714 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2022-12-13 11:43:08,714 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:08,714 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:08,715 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,718 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,719 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:08,775 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:08,775 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 11:43:08,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,776 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 11:43:08,778 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 [2022-12-13 11:43:08,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:08,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:08,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:08,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:08,789 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 11:43:08,790 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 11:43:08,793 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 11:43:08,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-12-13 11:43:08,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,796 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 11:43:08,798 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 [2022-12-13 11:43:08,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:08,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:08,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:08,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:08,810 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 11:43:08,810 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 11:43:08,813 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 11:43:08,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:08,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,817 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-12-13 11:43:08,818 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 [2022-12-13 11:43:08,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:08,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 11:43:08,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:08,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:08,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:08,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 11:43:08,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 11:43:08,832 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 11:43:08,835 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 11:43:08,835 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 11:43:08,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:08,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:08,836 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:08,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-12-13 11:43:08,838 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 11:43:08,838 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 11:43:08,838 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 11:43:08,838 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2022-12-13 11:43:08,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-12-13 11:43:08,841 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 11:43:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:08,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:43:08,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:08,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:43:08,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:08,877 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 [2022-12-13 11:43:08,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 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) [2022-12-13 11:43:08,889 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. 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 29 states and 36 transitions. Complement of second has 7 states. [2022-12-13 11:43:08,889 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 [2022-12-13 11:43:08,890 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) [2022-12-13 11:43:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-12-13 11:43:08,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2022-12-13 11:43:08,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,891 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 11:43:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:08,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:43:08,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:08,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:43:08,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:08,928 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2022-12-13 11:43:08,928 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 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) [2022-12-13 11:43:08,943 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. 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 26 states and 35 transitions. Complement of second has 7 states. [2022-12-13 11:43:08,944 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 [2022-12-13 11:43:08,944 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) [2022-12-13 11:43:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2022-12-13 11:43:08,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 3 letters. [2022-12-13 11:43:08,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,944 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 11:43:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:08,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:43:08,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:08,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:43:08,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:08,983 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 3 loop predicates [2022-12-13 11:43:08,984 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 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) [2022-12-13 11:43:08,997 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. 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 35 states and 43 transitions. Complement of second has 6 states. [2022-12-13 11:43:08,997 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 [2022-12-13 11:43:08,998 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) [2022-12-13 11:43:08,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-12-13 11:43:08,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2022-12-13 11:43:08,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 3 letters. [2022-12-13 11:43:08,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 6 letters. [2022-12-13 11:43:08,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:08,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2022-12-13 11:43:08,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-12-13 11:43:09,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 26 states and 34 transitions. [2022-12-13 11:43:09,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-12-13 11:43:09,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-12-13 11:43:09,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2022-12-13 11:43:09,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 11:43:09,000 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-12-13 11:43:09,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2022-12-13 11:43:09,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2022-12-13 11:43:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-12-13 11:43:09,001 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-12-13 11:43:09,001 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-12-13 11:43:09,001 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 11:43:09,001 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2022-12-13 11:43:09,001 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-12-13 11:43:09,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 11:43:09,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 11:43:09,002 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2022-12-13 11:43:09,002 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2022-12-13 11:43:09,002 INFO L748 eck$LassoCheckResult]: Stem: 548#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 549#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 540#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 542#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 547#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 545#L23 assume !(main_~q~0#1 < main_~p~0#1); 546#L26 [2022-12-13 11:43:09,002 INFO L750 eck$LassoCheckResult]: Loop: 546#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 543#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 544#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 554#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 553#L23 assume !(main_~q~0#1 < main_~p~0#1); 546#L26 [2022-12-13 11:43:09,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:09,002 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-12-13 11:43:09,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:09,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563943992] [2022-12-13 11:43:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:09,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash 46517562, now seen corresponding path program 1 times [2022-12-13 11:43:09,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:09,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924504259] [2022-12-13 11:43:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:09,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:09,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1606994736, now seen corresponding path program 5 times [2022-12-13 11:43:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:09,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664121907] [2022-12-13 11:43:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:09,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:09,068 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:09,068 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:09,068 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:09,068 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:09,068 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 11:43:09,069 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,069 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:09,069 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:09,069 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2022-12-13 11:43:09,069 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:09,069 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:09,070 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,072 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,074 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,125 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:09,126 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 11:43:09,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,127 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-12-13 11:43:09,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:09,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:09,146 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:09,146 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 11:43:09,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-12-13 11:43:09,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,149 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-12-13 11:43:09,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:09,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:09,169 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:09,169 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 11:43:09,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:09,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,172 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-12-13 11:43:09,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:09,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:09,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-12-13 11:43:09,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,197 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-12-13 11:43:09,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 11:43:09,200 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:09,354 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 11:43:09,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:09,358 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:09,358 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:09,358 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:09,358 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:09,358 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 11:43:09,358 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,358 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:09,358 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:09,358 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2022-12-13 11:43:09,358 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:09,358 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:09,359 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,362 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,363 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,428 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:09,428 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 11:43:09,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,429 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-12-13 11:43:09,431 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 [2022-12-13 11:43:09,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:09,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:09,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:09,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:09,443 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 11:43:09,443 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 11:43:09,446 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 11:43:09,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-12-13 11:43:09,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,450 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-12-13 11:43:09,452 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 [2022-12-13 11:43:09,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:09,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:09,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:09,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:09,463 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 11:43:09,463 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 11:43:09,465 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 11:43:09,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:09,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,469 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-12-13 11:43:09,471 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 [2022-12-13 11:43:09,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:09,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 11:43:09,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:09,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:09,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:09,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 11:43:09,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 11:43:09,486 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 11:43:09,489 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 11:43:09,489 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 11:43:09,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,490 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-12-13 11:43:09,491 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 11:43:09,492 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 11:43:09,492 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 11:43:09,492 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-12-13 11:43:09,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-12-13 11:43:09,495 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 11:43:09,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:09,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:43:09,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:09,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 11:43:09,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:09,547 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2022-12-13 11:43:09,547 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:09,571 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 62 transitions. Complement of second has 8 states. [2022-12-13 11:43:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-12-13 11:43:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2022-12-13 11:43:09,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 6 letters. Loop has 5 letters. [2022-12-13 11:43:09,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:09,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 11 letters. Loop has 5 letters. [2022-12-13 11:43:09,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:09,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 6 letters. Loop has 10 letters. [2022-12-13 11:43:09,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:09,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 62 transitions. [2022-12-13 11:43:09,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 11:43:09,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 38 transitions. [2022-12-13 11:43:09,574 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-12-13 11:43:09,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-12-13 11:43:09,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 38 transitions. [2022-12-13 11:43:09,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 11:43:09,574 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-12-13 11:43:09,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 38 transitions. [2022-12-13 11:43:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-12-13 11:43:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 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) [2022-12-13 11:43:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-12-13 11:43:09,576 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-12-13 11:43:09,576 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-12-13 11:43:09,576 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-12-13 11:43:09,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 32 transitions. [2022-12-13 11:43:09,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 11:43:09,576 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 11:43:09,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 11:43:09,577 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 1, 1, 1, 1] [2022-12-13 11:43:09,577 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 11:43:09,577 INFO L748 eck$LassoCheckResult]: Stem: 671#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 672#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 662#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 664#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 678#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 676#L23 assume !(main_~q~0#1 < main_~p~0#1); 677#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 683#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 682#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 681#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 679#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 668#L26-2 [2022-12-13 11:43:09,577 INFO L750 eck$LassoCheckResult]: Loop: 668#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 667#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 668#L26-2 [2022-12-13 11:43:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1606994734, now seen corresponding path program 6 times [2022-12-13 11:43:09,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:09,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230824781] [2022-12-13 11:43:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,583 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:09,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 3 times [2022-12-13 11:43:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:09,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941013898] [2022-12-13 11:43:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:09,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:09,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1866286831, now seen corresponding path program 7 times [2022-12-13 11:43:09,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:09,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296885916] [2022-12-13 11:43:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:09,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:09,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-12-13 11:43:09,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-12-13 11:43:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,611 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:43:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:43:09,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:43:09,639 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:09,639 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:09,639 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:09,639 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:09,639 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 11:43:09,640 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,640 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:09,640 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:09,640 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2022-12-13 11:43:09,640 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:09,640 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:09,641 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,643 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,645 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,677 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:09,677 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 11:43:09,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,678 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-12-13 11:43:09,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:09,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:09,697 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:09,697 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: [] [2022-12-13 11:43:09,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-12-13 11:43:09,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,700 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-12-13 11:43:09,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:09,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:09,719 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 11:43:09,720 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: [] [2022-12-13 11:43:09,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-12-13 11:43:09,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,723 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-12-13 11:43:09,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 11:43:09,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:09,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2022-12-13 11:43:09,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,739 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-12-13 11:43:09,741 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 11:43:09,741 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 11:43:09,763 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 11:43:09,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-12-13 11:43:09,766 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 11:43:09,766 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 11:43:09,766 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 11:43:09,766 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 11:43:09,766 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 11:43:09,766 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,766 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 11:43:09,766 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 11:43:09,766 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2022-12-13 11:43:09,766 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 11:43:09,766 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 11:43:09,767 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,769 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,771 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 11:43:09,803 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 11:43:09,803 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 11:43:09,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,804 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-12-13 11:43:09,807 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 [2022-12-13 11:43:09,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:09,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:09,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:09,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:09,818 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 11:43:09,818 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 11:43:09,821 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 11:43:09,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:09,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,824 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-12-13 11:43:09,827 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 [2022-12-13 11:43:09,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:09,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:09,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:09,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:09,838 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 11:43:09,838 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 11:43:09,841 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 11:43:09,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-12-13 11:43:09,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,844 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-12-13 11:43:09,846 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 [2022-12-13 11:43:09,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 11:43:09,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 11:43:09,857 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 11:43:09,857 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 11:43:09,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 11:43:09,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 11:43:09,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 11:43:09,861 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 11:43:09,863 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 11:43:09,863 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 11:43:09,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 11:43:09,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:09,864 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:09,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-12-13 11:43:09,866 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 11:43:09,866 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 11:43:09,866 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 11:43:09,866 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-12-13 11:43:09,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:09,869 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 11:43:09,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:09,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:43:09,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:09,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:43:09,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:09,904 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 [2022-12-13 11:43:09,904 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-12-13 11:43:09,913 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 32 states and 40 transitions. Complement of second has 5 states. [2022-12-13 11:43:09,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-12-13 11:43:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-12-13 11:43:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-12-13 11:43:09,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2022-12-13 11:43:09,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:09,915 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 11:43:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:09,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:43:09,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:09,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:43:09,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:09,947 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 [2022-12-13 11:43:09,947 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-12-13 11:43:09,954 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 32 states and 40 transitions. Complement of second has 5 states. [2022-12-13 11:43:09,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-12-13 11:43:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-12-13 11:43:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-12-13 11:43:09,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2022-12-13 11:43:09,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:09,955 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 11:43:09,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:09,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:43:09,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:09,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:43:09,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:09,988 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 [2022-12-13 11:43:09,989 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-12-13 11:43:09,997 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 36 states and 47 transitions. Complement of second has 4 states. [2022-12-13 11:43:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-12-13 11:43:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-12-13 11:43:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-12-13 11:43:09,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2022-12-13 11:43:09,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:09,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 2 letters. [2022-12-13 11:43:09,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:09,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 4 letters. [2022-12-13 11:43:09,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 11:43:09,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 47 transitions. [2022-12-13 11:43:10,000 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 11:43:10,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2022-12-13 11:43:10,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 11:43:10,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 11:43:10,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 11:43:10,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:43:10,000 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 11:43:10,000 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 11:43:10,000 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 11:43:10,000 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-12-13 11:43:10,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 11:43:10,000 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 11:43:10,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 11:43:10,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 11:43:10 BoogieIcfgContainer [2022-12-13 11:43:10,006 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 11:43:10,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:43:10,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:43:10,006 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:43:10,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:43:06" (3/4) ... [2022-12-13 11:43:10,009 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 11:43:10,009 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:43:10,010 INFO L158 Benchmark]: Toolchain (without parser) took 3709.21ms. Allocated memory was 132.1MB in the beginning and 180.4MB in the end (delta: 48.2MB). Free memory was 100.0MB in the beginning and 107.1MB in the end (delta: -7.1MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2022-12-13 11:43:10,010 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 132.1MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:43:10,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.03ms. Allocated memory is still 132.1MB. Free memory was 99.6MB in the beginning and 90.6MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 11:43:10,010 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.82ms. Allocated memory is still 132.1MB. Free memory was 90.6MB in the beginning and 89.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:43:10,011 INFO L158 Benchmark]: Boogie Preprocessor took 14.31ms. Allocated memory is still 132.1MB. Free memory was 89.2MB in the beginning and 88.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:43:10,011 INFO L158 Benchmark]: RCFGBuilder took 171.65ms. Allocated memory is still 132.1MB. Free memory was 88.1MB in the beginning and 80.1MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 11:43:10,011 INFO L158 Benchmark]: BuchiAutomizer took 3320.60ms. Allocated memory was 132.1MB in the beginning and 180.4MB in the end (delta: 48.2MB). Free memory was 79.7MB in the beginning and 108.1MB in the end (delta: -28.5MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2022-12-13 11:43:10,011 INFO L158 Benchmark]: Witness Printer took 3.01ms. Allocated memory is still 180.4MB. Free memory is still 108.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:43:10,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 132.1MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.03ms. Allocated memory is still 132.1MB. Free memory was 99.6MB in the beginning and 90.6MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.82ms. Allocated memory is still 132.1MB. Free memory was 90.6MB in the beginning and 89.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.31ms. Allocated memory is still 132.1MB. Free memory was 89.2MB in the beginning and 88.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 171.65ms. Allocated memory is still 132.1MB. Free memory was 88.1MB in the beginning and 80.1MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3320.60ms. Allocated memory was 132.1MB in the beginning and 180.4MB in the end (delta: 48.2MB). Free memory was 79.7MB in the beginning and 108.1MB in the end (delta: -28.5MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 3.01ms. Allocated memory is still 180.4MB. Free memory is still 108.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. One deterministic module has affine ranking function q and consists of 3 locations. One deterministic module has affine ranking function q and consists of 5 locations. One nondeterministic module has affine ranking function p and consists of 4 locations. One nondeterministic module has affine ranking function q and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 8 iterations. TraceHistogramMax:4. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 80 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 63 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax161 hnf100 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp89 dnf100 smp100 tf107 neg98 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 11:43:10,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:10,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a93e47b-662f-483f-b757-8f13efa3353a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE