./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN --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 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- 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-6b4ec56 [2022-11-20 09:37:02,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:37:02,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:37:02,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:37:02,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:37:02,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:37:02,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:37:02,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:37:02,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:37:02,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:37:02,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:37:02,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:37:02,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:37:02,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:37:02,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:37:02,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:37:02,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:37:02,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:37:02,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:37:02,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:37:02,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:37:02,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:37:02,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:37:02,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:37:02,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:37:02,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:37:02,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:37:02,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:37:02,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:37:02,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:37:02,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:37:02,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:37:02,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:37:02,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:37:02,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:37:02,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:37:02,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:37:02,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:37:02,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:37:02,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:37:02,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:37:02,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-20 09:37:02,567 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:37:02,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:37:02,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:37:02,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:37:02,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:37:02,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:37:02,571 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:37:02,571 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 09:37:02,571 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 09:37:02,571 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 09:37:02,573 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 09:37:02,573 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 09:37:02,573 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 09:37:02,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:37:02,574 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:37:02,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:37:02,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:37:02,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 09:37:02,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 09:37:02,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 09:37:02,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:37:02,575 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 09:37:02,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:37:02,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 09:37:02,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:37:02,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:37:02,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:37:02,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:37:02,579 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 09:37:02,579 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_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2022-11-20 09:37:02,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:37:02,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:37:02,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:37:02,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:37:02,971 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:37:02,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-numeric/twisted.c [2022-11-20 09:37:06,155 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:37:06,385 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:37:06,386 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/sv-benchmarks/c/termination-numeric/twisted.c [2022-11-20 09:37:06,392 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/data/af0c421ee/428ce1af69b14c2e8ed06d5857115e58/FLAGf26102eb8 [2022-11-20 09:37:06,409 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/data/af0c421ee/428ce1af69b14c2e8ed06d5857115e58 [2022-11-20 09:37:06,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:37:06,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:37:06,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:37:06,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:37:06,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:37:06,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4320a700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06, skipping insertion in model container [2022-11-20 09:37:06,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:37:06,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:37:06,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:37:06,641 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:37:06,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:37:06,672 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:37:06,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06 WrapperNode [2022-11-20 09:37:06,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:37:06,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:37:06,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:37:06,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:37:06,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,712 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2022-11-20 09:37:06,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:37:06,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:37:06,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:37:06,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:37:06,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:37:06,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:37:06,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:37:06,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:37:06,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (1/1) ... [2022-11-20 09:37:06,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:06,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:06,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:06,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 09:37:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:37:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:37:06,929 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:37:06,931 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:37:07,120 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:37:07,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:37:07,136 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 09:37:07,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:37:07 BoogieIcfgContainer [2022-11-20 09:37:07,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:37:07,140 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 09:37:07,140 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 09:37:07,144 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 09:37:07,149 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 09:37:07,150 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 09:37:06" (1/3) ... [2022-11-20 09:37:07,151 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ec9607a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:37:07, skipping insertion in model container [2022-11-20 09:37:07,151 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 09:37:07,151 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:06" (2/3) ... [2022-11-20 09:37:07,152 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ec9607a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:37:07, skipping insertion in model container [2022-11-20 09:37:07,153 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 09:37:07,153 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:37:07" (3/3) ... [2022-11-20 09:37:07,155 INFO L332 chiAutomizerObserver]: Analyzing ICFG twisted.c [2022-11-20 09:37:07,235 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 09:37:07,235 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 09:37:07,235 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 09:37:07,236 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 09:37:07,236 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 09:37:07,236 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 09:37:07,236 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 09:37:07,237 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 09:37:07,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:07,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-20 09:37:07,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:37:07,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:37:07,265 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 09:37:07,266 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 09:37:07,266 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 09:37:07,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:07,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-20 09:37:07,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:37:07,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:37:07,269 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 09:37:07,269 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 09:37:07,277 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 9#L18true [2022-11-20 09:37:07,278 INFO L750 eck$LassoCheckResult]: Loop: 9#L18true assume !true; 10#L13true goto; 2#L16true assume !!(f_~j~0#1 < f_~l#1);f_#t~post1#1 := f_~j~0#1;f_~j~0#1 := 1 + f_#t~post1#1;havoc f_#t~post1#1; 5#L15true assume !(0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2)); 9#L18true [2022-11-20 09:37:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-20 09:37:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:07,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063165889] [2022-11-20 09:37:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:07,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:07,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:37:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:07,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:37:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:07,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1481770, now seen corresponding path program 1 times [2022-11-20 09:37:07,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:07,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525223720] [2022-11-20 09:37:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:07,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:37:07,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525223720] [2022-11-20 09:37:07,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525223720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:37:07,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:37:07,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:37:07,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422851240] [2022-11-20 09:37:07,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:37:07,508 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 09:37:07,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:37:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:37:07,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:37:07,557 INFO L87 Difference]: Start difference. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 1 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:07,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:07,565 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2022-11-20 09:37:07,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2022-11-20 09:37:07,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-20 09:37:07,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 8 states and 11 transitions. [2022-11-20 09:37:07,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-20 09:37:07,576 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-20 09:37:07,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-11-20 09:37:07,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:37:07,578 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-20 09:37:07,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-11-20 09:37:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-20 09:37:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-11-20 09:37:07,608 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-20 09:37:07,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:37:07,614 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-20 09:37:07,614 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 09:37:07,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-11-20 09:37:07,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-20 09:37:07,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:37:07,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:37:07,616 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 09:37:07,616 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-20 09:37:07,616 INFO L748 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 41#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 39#L18 [2022-11-20 09:37:07,616 INFO L750 eck$LassoCheckResult]: Loop: 39#L18 goto; 34#L9 assume !(f_~i~0#1 < f_~k#1); 35#L13 goto; 37#L16 assume !!(f_~j~0#1 < f_~l#1);f_#t~post1#1 := f_~j~0#1;f_~j~0#1 := 1 + f_#t~post1#1;havoc f_#t~post1#1; 38#L15 assume !(0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2)); 39#L18 [2022-11-20 09:37:07,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:07,617 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-20 09:37:07,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:07,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811160062] [2022-11-20 09:37:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:07,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:07,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:37:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:07,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:37:07,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 34460407, now seen corresponding path program 1 times [2022-11-20 09:37:07,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:07,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060752066] [2022-11-20 09:37:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:07,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:07,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:37:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:07,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:37:07,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:07,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1805899893, now seen corresponding path program 1 times [2022-11-20 09:37:07,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:07,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111621516] [2022-11-20 09:37:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:07,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:07,669 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:37:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:07,681 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:37:07,747 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:37:07,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:37:07,748 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:37:07,748 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:37:07,748 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 09:37:07,748 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:07,749 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:37:07,749 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:37:07,749 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2022-11-20 09:37:07,749 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:37:07,750 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:37:07,767 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:37:07,785 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:37:07,794 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:37:07,906 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:37:07,907 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 09:37:07,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:07,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:07,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:07,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:37:07,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:37:07,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 09:37:07,978 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:37:07,978 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_~i~0#1=-6, ULTIMATE.start_f_~k#1=-7} Honda state: {ULTIMATE.start_f_~i~0#1=-6, ULTIMATE.start_f_~k#1=-7} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:37:07,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:07,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:07,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:07,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:07,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 09:37:07,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:37:07,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:37:08,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:08,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:08,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:08,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:08,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 09:37:08,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 09:37:08,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:37:08,164 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 09:37:08,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:08,170 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:37:08,170 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:37:08,170 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:37:08,170 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:37:08,170 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 09:37:08,170 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:08,171 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:37:08,171 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:37:08,171 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2022-11-20 09:37:08,171 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:37:08,171 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:37:08,173 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:37:08,182 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:37:08,191 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:37:08,274 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:37:08,286 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 09:37:08,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:08,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:08,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:08,295 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:37:08,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:37:08,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:37:08,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:37:08,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:37:08,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:37:08,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 09:37:08,313 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:37:08,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:37:08,324 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:37:08,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:08,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:08,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:08,340 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:08,352 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:37:08,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:37:08,365 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:37:08,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:37:08,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:37:08,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:37:08,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:37:08,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:37:08,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 09:37:08,390 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 09:37:08,396 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 09:37:08,412 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 09:37:08,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:08,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:08,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:08,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 09:37:08,459 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 09:37:08,459 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 09:37:08,459 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 09:37:08,460 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~j~0#1, ULTIMATE.start_f_~l#1) = -1*ULTIMATE.start_f_~j~0#1 + 1*ULTIMATE.start_f_~l#1 Supporting invariants [] [2022-11-20 09:37:08,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:08,473 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 09:37:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:08,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:37:08,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:08,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:37:08,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:08,655 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 09:37:08,657 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:08,687 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. 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 16 states and 23 transitions. Complement of second has 4 states. [2022-11-20 09:37:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 09:37:08,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2022-11-20 09:37:08,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 2 letters. Loop has 5 letters. [2022-11-20 09:37:08,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:37:08,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 5 letters. [2022-11-20 09:37:08,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:37:08,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 2 letters. Loop has 10 letters. [2022-11-20 09:37:08,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:37:08,695 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2022-11-20 09:37:08,699 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 09:37:08,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 18 transitions. [2022-11-20 09:37:08,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-20 09:37:08,701 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-11-20 09:37:08,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2022-11-20 09:37:08,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 09:37:08,705 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2022-11-20 09:37:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2022-11-20 09:37:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-11-20 09:37:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-11-20 09:37:08,711 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-20 09:37:08,711 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-20 09:37:08,715 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 09:37:08,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2022-11-20 09:37:08,716 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 09:37:08,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:37:08,716 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:37:08,716 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 09:37:08,716 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 09:37:08,717 INFO L748 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 108#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 109#L18 goto; 98#L9 [2022-11-20 09:37:08,717 INFO L750 eck$LassoCheckResult]: Loop: 98#L9 assume !!(f_~i~0#1 < f_~k#1);f_#t~post0#1 := f_~i~0#1;f_~i~0#1 := 1 + f_#t~post0#1;havoc f_#t~post0#1; 99#L8 assume 0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2); 98#L9 [2022-11-20 09:37:08,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:08,717 INFO L85 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2022-11-20 09:37:08,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:08,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824006147] [2022-11-20 09:37:08,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:08,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:08,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:37:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:08,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:37:08,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-11-20 09:37:08,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:08,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339393741] [2022-11-20 09:37:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:08,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:08,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:37:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:08,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:37:08,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:08,756 INFO L85 PathProgramCache]: Analyzing trace with hash 28694854, now seen corresponding path program 1 times [2022-11-20 09:37:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:08,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857397732] [2022-11-20 09:37:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:08,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:08,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:37:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:37:08,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:37:08,815 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:37:08,815 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:37:08,817 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:37:08,818 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:37:08,818 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 09:37:08,818 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:08,818 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:37:08,818 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:37:08,818 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2022-11-20 09:37:08,819 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:37:08,819 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:37:08,820 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:37:08,825 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:37:08,938 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:37:08,939 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 09:37:08,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:08,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:08,940 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:08,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 09:37:08,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:37:08,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:37:08,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 09:37:08,967 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0#1=0} Honda state: {ULTIMATE.start_f_#t~post0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 09:37:08,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:08,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:08,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:08,972 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:08,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 09:37:08,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 09:37:08,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:37:09,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:09,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:09,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:09,023 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:09,031 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 09:37:09,031 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 09:37:09,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 09:37:09,217 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 09:37:09,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-20 09:37:09,222 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 09:37:09,222 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 09:37:09,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 09:37:09,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 09:37:09,222 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 09:37:09,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:09,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 09:37:09,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 09:37:09,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2022-11-20 09:37:09,223 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 09:37:09,223 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 09:37:09,224 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:37:09,228 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 09:37:09,310 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 09:37:09,310 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 09:37:09,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:09,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:09,315 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:09,329 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:37:09,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:37:09,341 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:37:09,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:37:09,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:37:09,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:37:09,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:37:09,343 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:37:09,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 09:37:09,353 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 09:37:09,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:09,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:09,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:09,364 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:09,377 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 09:37:09,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 09:37:09,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 09:37:09,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 09:37:09,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 09:37:09,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 09:37:09,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 09:37:09,396 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 09:37:09,396 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 09:37:09,426 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 09:37:09,430 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 09:37:09,430 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 09:37:09,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:37:09,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:09,434 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:37:09,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 09:37:09,437 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 09:37:09,437 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 09:37:09,438 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 09:37:09,438 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~k#1, ULTIMATE.start_f_~i~0#1) = 1*ULTIMATE.start_f_~k#1 - 1*ULTIMATE.start_f_~i~0#1 Supporting invariants [] [2022-11-20 09:37:09,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:09,444 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 09:37:09,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:09,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:37:09,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:09,485 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:37:09,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:09,522 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 09:37:09,522 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:09,560 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 32 transitions. Complement of second has 4 states. [2022-11-20 09:37:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 09:37:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2022-11-20 09:37:09,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 3 letters. Loop has 2 letters. [2022-11-20 09:37:09,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:37:09,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-20 09:37:09,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:37:09,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-20 09:37:09,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 09:37:09,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 32 transitions. [2022-11-20 09:37:09,568 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 09:37:09,569 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2022-11-20 09:37:09,569 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 09:37:09,570 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 09:37:09,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 09:37:09,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:37:09,570 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 09:37:09,570 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 09:37:09,570 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 09:37:09,570 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 09:37:09,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 09:37:09,571 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 09:37:09,571 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 09:37:09,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 09:37:09 BoogieIcfgContainer [2022-11-20 09:37:09,582 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 09:37:09,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:37:09,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:37:09,583 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:37:09,584 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:37:07" (3/4) ... [2022-11-20 09:37:09,588 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 09:37:09,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:37:09,589 INFO L158 Benchmark]: Toolchain (without parser) took 3175.32ms. Allocated memory is still 188.7MB. Free memory was 142.6MB in the beginning and 116.5MB in the end (delta: 26.1MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2022-11-20 09:37:09,589 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory was 90.8MB in the beginning and 90.8MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:37:09,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.57ms. Allocated memory is still 188.7MB. Free memory was 141.8MB in the beginning and 132.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 09:37:09,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.76ms. Allocated memory is still 188.7MB. Free memory was 132.4MB in the beginning and 131.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:37:09,595 INFO L158 Benchmark]: Boogie Preprocessor took 39.64ms. Allocated memory is still 188.7MB. Free memory was 131.2MB in the beginning and 130.3MB in the end (delta: 867.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:37:09,597 INFO L158 Benchmark]: RCFGBuilder took 382.89ms. Allocated memory is still 188.7MB. Free memory was 130.3MB in the beginning and 120.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 09:37:09,598 INFO L158 Benchmark]: BuchiAutomizer took 2443.07ms. Allocated memory is still 188.7MB. Free memory was 120.0MB in the beginning and 116.5MB in the end (delta: 3.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2022-11-20 09:37:09,598 INFO L158 Benchmark]: Witness Printer took 4.90ms. Allocated memory is still 188.7MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:37:09,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory was 90.8MB in the beginning and 90.8MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.57ms. Allocated memory is still 188.7MB. Free memory was 141.8MB in the beginning and 132.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.76ms. Allocated memory is still 188.7MB. Free memory was 132.4MB in the beginning and 131.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.64ms. Allocated memory is still 188.7MB. Free memory was 131.2MB in the beginning and 130.3MB in the end (delta: 867.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 382.89ms. Allocated memory is still 188.7MB. Free memory was 130.3MB in the beginning and 120.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2443.07ms. Allocated memory is still 188.7MB. Free memory was 120.0MB in the beginning and 116.5MB in the end (delta: 3.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Witness Printer took 4.90ms. Allocated memory is still 188.7MB. Free memory is still 116.5MB. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * j + l and consists of 3 locations. One deterministic module has affine ranking function k + -1 * i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 32 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp77 ukn100 mio100 lsp100 div400 bol100 ite100 ukn100 eq145 hnf95 smp43 dnf100 smp100 tf106 neg98 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 09:37:09,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:09,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:10,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b40259-f699-43bc-b73a-630c0c9cd422/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE