./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/not-01.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_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/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_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/not-01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/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_eb58507d-80af-4e69-a12f-5eb7fa33f377/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 3dfbe8f5341b447680f0727714aef9849c6c8cbf32af0f88458cc80db5d02e27 --- 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 11:13:28,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:13:28,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:13:28,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:13:28,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:13:28,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:13:28,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:13:28,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:13:28,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:13:28,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:13:28,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:13:28,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:13:28,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:13:28,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:13:28,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:13:28,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:13:28,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:13:28,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:13:28,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:13:28,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:13:28,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:13:28,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:13:28,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:13:28,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:13:28,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:13:28,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:13:28,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:13:28,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:13:28,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:13:28,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:13:28,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:13:28,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:13:28,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:13:28,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:13:28,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:13:28,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:13:28,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:13:28,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:13:28,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:13:28,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:13:28,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:13:28,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-20 11:13:28,680 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:13:28,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:13:28,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:13:28,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:13:28,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:13:28,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:13:28,683 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:13:28,683 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 11:13:28,683 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 11:13:28,683 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 11:13:28,683 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 11:13:28,684 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 11:13:28,684 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 11:13:28,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:13:28,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:13:28,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:13:28,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:13:28,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 11:13:28,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 11:13:28,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 11:13:28,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:13:28,685 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 11:13:28,686 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:13:28,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 11:13:28,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:13:28,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:13:28,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:13:28,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:13:28,688 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 11:13:28,688 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_eb58507d-80af-4e69-a12f-5eb7fa33f377/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dfbe8f5341b447680f0727714aef9849c6c8cbf32af0f88458cc80db5d02e27 [2022-11-20 11:13:28,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:13:28,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:13:28,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:13:28,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:13:28,973 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:13:28,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-bwb/not-01.c [2022-11-20 11:13:32,059 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:13:32,223 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:13:32,224 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/sv-benchmarks/c/termination-bwb/not-01.c [2022-11-20 11:13:32,228 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/data/318491e06/72dc8fe0a1174e1db9bdb27e7fa9c62d/FLAG6ee4a1f7e [2022-11-20 11:13:32,243 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/data/318491e06/72dc8fe0a1174e1db9bdb27e7fa9c62d [2022-11-20 11:13:32,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:13:32,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:13:32,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:13:32,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:13:32,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:13:32,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7876906e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32, skipping insertion in model container [2022-11-20 11:13:32,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:13:32,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:13:32,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:13:32,471 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:13:32,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:13:32,499 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:13:32,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32 WrapperNode [2022-11-20 11:13:32,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:13:32,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:13:32,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:13:32,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:13:32,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,534 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-20 11:13:32,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:13:32,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:13:32,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:13:32,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:13:32,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,557 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:13:32,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:13:32,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:13:32,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:13:32,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (1/1) ... [2022-11-20 11:13:32,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:32,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:32,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:32,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 11:13:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:13:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:13:32,710 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:13:32,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:13:32,798 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:13:32,805 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:13:32,805 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:13:32,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:32 BoogieIcfgContainer [2022-11-20 11:13:32,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:13:32,809 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 11:13:32,809 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 11:13:32,813 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 11:13:32,814 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:13:32,814 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 11:13:32" (1/3) ... [2022-11-20 11:13:32,816 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72c679d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 11:13:32, skipping insertion in model container [2022-11-20 11:13:32,816 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:13:32,816 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:32" (2/3) ... [2022-11-20 11:13:32,816 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72c679d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 11:13:32, skipping insertion in model container [2022-11-20 11:13:32,817 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:13:32,817 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:32" (3/3) ... [2022-11-20 11:13:32,818 INFO L332 chiAutomizerObserver]: Analyzing ICFG not-01.c [2022-11-20 11:13:32,876 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 11:13:32,876 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 11:13:32,877 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 11:13:32,877 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 11:13:32,877 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 11:13:32,877 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 11:13:32,878 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 11:13:32,878 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 11:13:32,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:32,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 11:13:32,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:13:32,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:13:32,906 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 11:13:32,906 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 11:13:32,907 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 11:13:32,907 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:32,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 11:13:32,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:13:32,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:13:32,908 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 11:13:32,909 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 11:13:32,916 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~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L18-2true [2022-11-20 11:13:32,917 INFO L750 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 3#L18true assume !(main_~a~0#1 > 0);main_~x~0#1 := main_~x~0#1 + main_~a~0#1; 5#L18-2true [2022-11-20 11:13:32,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:32,923 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-20 11:13:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:32,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975791117] [2022-11-20 11:13:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:33,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:33,049 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:33,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:33,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-11-20 11:13:33,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:33,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016799024] [2022-11-20 11:13:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:33,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:33,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:33,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-20 11:13:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:33,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141352500] [2022-11-20 11:13:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:33,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:33,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:33,309 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:13:33,310 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:13:33,310 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:13:33,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:13:33,310 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:13:33,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:33,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:13:33,311 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:13:33,311 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration1_Loop [2022-11-20 11:13:33,311 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:13:33,311 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:13:33,331 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:13:33,344 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 11:13:33,491 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:13:33,492 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:13:33,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:33,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:33,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:33,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 11:13:33,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:13:33,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:33,532 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:13:33,532 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:13:33,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:33,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:33,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:33,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:33,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:13:33,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:33,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 11:13:33,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:33,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:33,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:33,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:33,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:13:33,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:33,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 11:13:33,631 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:13:33,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:33,640 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:13:33,640 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:13:33,640 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:13:33,641 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:13:33,641 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:13:33,641 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:33,641 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:13:33,641 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:13:33,641 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration1_Loop [2022-11-20 11:13:33,641 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:13:33,641 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:13:33,643 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:13:33,647 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 11:13:33,708 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:13:33,713 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:13:33,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:33,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:33,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:33,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:13:33,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:13:33,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:13:33,754 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:13:33,754 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:13:33,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:13:33,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:13:33,756 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:13:33,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 11:13:33,763 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:13:33,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-11-20 11:13:33,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:33,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:33,775 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 11:13:33,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:13:33,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:13:33,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:13:33,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:13:33,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:13:33,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 11:13:33,790 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:13:33,790 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:13:33,800 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:13:33,805 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:13:33,805 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 11:13:33,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:33,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:33,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:33,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 11:13:33,840 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:13:33,840 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:13:33,840 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:13:33,841 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 2*ULTIMATE.start_main_~a~0#1 + 1 Supporting invariants [] [2022-11-20 11:13:33,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:33,854 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:13:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:33,895 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:13:33,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:33,912 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:13:33,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:34,034 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 11:13:34,072 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 11:13:34,074 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:34,155 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). 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 28 states and 36 transitions. Complement of second has 8 states. [2022-11-20 11:13:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:13:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2022-11-20 11:13:34,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-20 11:13:34,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:34,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-20 11:13:34,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:34,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-20 11:13:34,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:34,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 36 transitions. [2022-11-20 11:13:34,177 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 11:13:34,180 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 9 states and 12 transitions. [2022-11-20 11:13:34,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-20 11:13:34,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-11-20 11:13:34,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2022-11-20 11:13:34,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:13:34,184 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-11-20 11:13:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2022-11-20 11:13:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-11-20 11:13:34,210 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 11:13:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-11-20 11:13:34,212 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-20 11:13:34,212 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-20 11:13:34,213 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 11:13:34,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-11-20 11:13:34,214 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 11:13:34,215 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:13:34,215 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:13:34,216 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-20 11:13:34,216 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 11:13:34,216 INFO L748 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 79#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 81#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 74#L18 assume main_~a~0#1 > 0;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 75#L18-2 [2022-11-20 11:13:34,216 INFO L750 eck$LassoCheckResult]: Loop: 75#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 80#L18 assume !(main_~a~0#1 > 0);main_~x~0#1 := main_~x~0#1 + main_~a~0#1; 75#L18-2 [2022-11-20 11:13:34,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-20 11:13:34,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:34,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947831608] [2022-11-20 11:13:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:34,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:34,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-11-20 11:13:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:34,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363945619] [2022-11-20 11:13:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,249 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:34,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:34,260 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-11-20 11:13:34,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:34,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171271114] [2022-11-20 11:13:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:34,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:34,385 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:13:34,385 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:13:34,385 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:13:34,385 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:13:34,386 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:13:34,386 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:34,386 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:13:34,386 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:13:34,386 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration2_Loop [2022-11-20 11:13:34,386 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:13:34,386 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:13:34,388 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 11:13:34,400 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 11:13:34,450 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:13:34,450 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:13:34,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:34,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:34,452 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:34,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:13:34,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:34,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 11:13:34,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:34,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:34,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:34,529 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:34,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:13:34,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:34,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 11:13:34,591 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:13:34,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:34,611 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:13:34,612 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:13:34,612 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:13:34,612 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:13:34,612 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:13:34,612 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:34,612 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:13:34,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:13:34,612 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration2_Loop [2022-11-20 11:13:34,612 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:13:34,613 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:13:34,614 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 11:13:34,626 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 11:13:34,675 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:13:34,675 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:13:34,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:34,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:34,676 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:34,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 11:13:34,688 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 11:13:34,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:13:34,698 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:13:34,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:13:34,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:13:34,699 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:13:34,701 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:13:34,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:13:34,727 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:13:34,731 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:13:34,732 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 11:13:34,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:34,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:34,735 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:34,742 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:13:34,742 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:13:34,742 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:13:34,742 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 2*ULTIMATE.start_main_~a~0#1 + 1 Supporting invariants [] [2022-11-20 11:13:34,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 11:13:34,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-20 11:13:34,752 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:13:34,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:34,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:13:34,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:34,796 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:13:34,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:34,837 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 11:13:34,837 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:34,854 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 19 transitions. Complement of second has 5 states. [2022-11-20 11:13:34,854 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 11:13:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-11-20 11:13:34,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-20 11:13:34,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:34,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-20 11:13:34,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:34,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2022-11-20 11:13:34,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:34,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2022-11-20 11:13:34,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 11:13:34,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 18 transitions. [2022-11-20 11:13:34,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-20 11:13:34,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-20 11:13:34,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2022-11-20 11:13:34,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:13:34,886 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2022-11-20 11:13:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2022-11-20 11:13:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-11-20 11:13:34,888 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 11:13:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-11-20 11:13:34,888 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-20 11:13:34,888 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-20 11:13:34,889 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 11:13:34,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2022-11-20 11:13:34,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 11:13:34,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:13:34,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:13:34,890 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2022-11-20 11:13:34,890 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 11:13:34,891 INFO L748 eck$LassoCheckResult]: Stem: 138#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 139#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 143#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 145#L18 assume main_~a~0#1 > 0;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 144#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 134#L18 assume main_~a~0#1 > 0;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 135#L18-2 [2022-11-20 11:13:34,891 INFO L750 eck$LassoCheckResult]: Loop: 135#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 140#L18 assume !(main_~a~0#1 > 0);main_~x~0#1 := main_~x~0#1 + main_~a~0#1; 135#L18-2 [2022-11-20 11:13:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash 889692233, now seen corresponding path program 2 times [2022-11-20 11:13:34,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:34,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143216740] [2022-11-20 11:13:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:34,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-11-20 11:13:34,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:34,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:34,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2022-11-20 11:13:34,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:34,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544293997] [2022-11-20 11:13:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:34,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:34,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash 295744366, now seen corresponding path program 2 times [2022-11-20 11:13:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:34,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237413381] [2022-11-20 11:13:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:34,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,969 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:34,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:35,024 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:13:35,025 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:13:35,025 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:13:35,025 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:13:35,025 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:13:35,025 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,026 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:13:35,026 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:13:35,026 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration3_Loop [2022-11-20 11:13:35,026 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:13:35,026 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:13:35,027 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 11:13:35,030 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 11:13:35,084 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:13:35,084 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:13:35,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:35,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:35,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:13:35,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:35,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 11:13:35,122 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:13:35,122 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:13:35,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:35,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:35,133 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:35,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:13:35,142 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:35,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 11:13:35,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:35,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:35,182 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:35,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:13:35,189 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:35,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 11:13:35,231 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:13:35,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:35,240 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:13:35,240 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:13:35,241 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:13:35,241 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:13:35,241 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:13:35,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,241 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:13:35,241 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:13:35,241 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration3_Loop [2022-11-20 11:13:35,241 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:13:35,241 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:13:35,242 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 11:13:35,246 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 11:13:35,311 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:13:35,312 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:13:35,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:35,313 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:35,319 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 11:13:35,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:13:35,332 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:13:35,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:13:35,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:13:35,332 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:13:35,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:13:35,333 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:13:35,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 11:13:35,339 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:13:35,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:35,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:35,349 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:35,357 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 11:13:35,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:13:35,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:13:35,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:13:35,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:13:35,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:13:35,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:13:35,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:13:35,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 11:13:35,382 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:13:35,385 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:13:35,386 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 11:13:35,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:35,391 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:35,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 11:13:35,396 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:13:35,396 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:13:35,396 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:13:35,396 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 2*ULTIMATE.start_main_~a~0#1 + 1 Supporting invariants [] [2022-11-20 11:13:35,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:35,403 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:13:35,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:35,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:13:35,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:35,441 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:13:35,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:35,484 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 11:13:35,485 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 11:13:35,485 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:35,503 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 23 transitions. Complement of second has 5 states. [2022-11-20 11:13:35,504 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 11:13:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-11-20 11:13:35,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-20 11:13:35,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:35,505 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:13:35,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:35,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:13:35,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:35,560 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:13:35,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:35,632 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 11:13:35,635 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:13:35,635 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:35,659 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 23 transitions. Complement of second has 5 states. [2022-11-20 11:13:35,660 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 11:13:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-11-20 11:13:35,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-20 11:13:35,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:35,662 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:13:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:35,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:13:35,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:35,707 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:13:35,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:35,747 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 11:13:35,748 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:13:35,748 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:35,764 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 26 transitions. Complement of second has 6 states. [2022-11-20 11:13:35,764 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 11:13:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-11-20 11:13:35,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-20 11:13:35,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:35,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2022-11-20 11:13:35,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:35,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-20 11:13:35,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:35,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 26 transitions. [2022-11-20 11:13:35,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 11:13:35,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 20 transitions. [2022-11-20 11:13:35,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-20 11:13:35,768 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-20 11:13:35,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-11-20 11:13:35,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:13:35,769 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-11-20 11:13:35,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-11-20 11:13:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2022-11-20 11:13:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2022-11-20 11:13:35,770 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 8 transitions. [2022-11-20 11:13:35,770 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2022-11-20 11:13:35,770 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 11:13:35,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2022-11-20 11:13:35,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 11:13:35,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:13:35,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:13:35,771 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 11:13:35,771 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 11:13:35,772 INFO L748 eck$LassoCheckResult]: Stem: 302#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 303#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 299#L18-2 [2022-11-20 11:13:35,772 INFO L750 eck$LassoCheckResult]: Loop: 299#L18-2 assume !!(main_~x~0#1 > 0);main_#t~nondet2#1 := ~bitwiseComplement(main_~a~0#1);assume main_#t~nondet2#1 != main_~a~0#1;assume main_~a~0#1 >= 0 || main_#t~nondet2#1 > 0;main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 298#L18 assume main_~a~0#1 > 0;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 299#L18-2 [2022-11-20 11:13:35,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-20 11:13:35,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:35,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215194430] [2022-11-20 11:13:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:35,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:35,775 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:35,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:35,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:35,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-11-20 11:13:35,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:35,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898422473] [2022-11-20 11:13:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:35,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:35,781 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:35,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:35,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:35,785 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 3 times [2022-11-20 11:13:35,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:35,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847416957] [2022-11-20 11:13:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:35,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:35,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:13:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:13:35,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:13:35,830 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:13:35,830 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:13:35,830 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:13:35,830 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:13:35,830 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:13:35,831 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,831 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:13:35,831 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:13:35,831 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration4_Loop [2022-11-20 11:13:35,831 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:13:35,831 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:13:35,832 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 11:13:35,834 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 11:13:35,885 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:13:35,885 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:13:35,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:35,886 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:35,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 11:13:35,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:13:35,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:35,902 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:13:35,902 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:13:35,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:35,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:35,908 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:35,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 11:13:35,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:13:35,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:35,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-11-20 11:13:35,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:35,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:35,933 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:35,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 11:13:35,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:13:35,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:13:36,126 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:13:36,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:36,136 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:13:36,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:13:36,136 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:13:36,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:13:36,137 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:13:36,137 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:36,137 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:13:36,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:13:36,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-01.c_Iteration4_Loop [2022-11-20 11:13:36,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:13:36,137 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:13:36,138 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 11:13:36,152 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 11:13:36,200 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:13:36,200 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:13:36,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:36,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:36,211 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:36,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 11:13:36,219 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 11:13:36,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:13:36,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:13:36,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:13:36,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:13:36,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:13:36,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:13:36,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:13:36,251 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:13:36,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:36,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:36,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:36,257 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:36,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 11:13:36,264 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 11:13:36,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:13:36,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:13:36,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:13:36,290 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 11:13:36,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:13:36,293 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-20 11:13:36,293 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:13:36,304 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:13:36,308 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-20 11:13:36,308 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 11:13:36,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:13:36,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:36,310 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:36,321 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:13:36,321 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:13:36,322 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:13:36,322 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-20 11:13:36,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 11:13:36,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:36,336 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:13:36,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:36,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:36,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:36,379 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:13:36,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:36,393 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:13:36,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:36,407 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 11:13:36,408 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 11:13:36,408 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:36,424 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. 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 12 states and 18 transitions. Complement of second has 6 states. [2022-11-20 11:13:36,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:13:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2022-11-20 11:13:36,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-20 11:13:36,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:36,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-20 11:13:36,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:36,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-20 11:13:36,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:13:36,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2022-11-20 11:13:36,433 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:13:36,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2022-11-20 11:13:36,433 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 11:13:36,433 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 11:13:36,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 11:13:36,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:36,433 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:13:36,433 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:13:36,434 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:13:36,434 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 11:13:36,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:13:36,434 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:13:36,434 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 11:13:36,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 11:13:36 BoogieIcfgContainer [2022-11-20 11:13:36,444 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 11:13:36,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:13:36,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:13:36,445 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:13:36,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:32" (3/4) ... [2022-11-20 11:13:36,449 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 11:13:36,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:13:36,450 INFO L158 Benchmark]: Toolchain (without parser) took 4202.78ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 80.1MB in the beginning and 123.1MB in the end (delta: -43.0MB). Peak memory consumption was 654.8kB. Max. memory is 16.1GB. [2022-11-20 11:13:36,450 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:13:36,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.35ms. Allocated memory is still 115.3MB. Free memory was 80.1MB in the beginning and 71.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 11:13:36,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.82ms. Allocated memory is still 115.3MB. Free memory was 71.2MB in the beginning and 69.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:13:36,460 INFO L158 Benchmark]: Boogie Preprocessor took 22.26ms. Allocated memory is still 115.3MB. Free memory was 69.9MB in the beginning and 68.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:13:36,461 INFO L158 Benchmark]: RCFGBuilder took 247.70ms. Allocated memory is still 115.3MB. Free memory was 68.9MB in the beginning and 60.2MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:13:36,461 INFO L158 Benchmark]: BuchiAutomizer took 3635.65ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 60.2MB in the beginning and 123.1MB in the end (delta: -63.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:13:36,461 INFO L158 Benchmark]: Witness Printer took 3.82ms. Allocated memory is still 157.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:13:36,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.35ms. Allocated memory is still 115.3MB. Free memory was 80.1MB in the beginning and 71.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.82ms. Allocated memory is still 115.3MB. Free memory was 71.2MB in the beginning and 69.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.26ms. Allocated memory is still 115.3MB. Free memory was 69.9MB in the beginning and 68.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 247.70ms. Allocated memory is still 115.3MB. Free memory was 68.9MB in the beginning and 60.2MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3635.65ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 60.2MB in the beginning and 123.1MB in the end (delta: -63.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.82ms. Allocated memory is still 157.3MB. Free memory is still 123.1MB. 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 1 + 2 * a and consists of 5 locations. One deterministic module has affine ranking function 1 + 2 * a and consists of 3 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function 1 + 2 * a and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 30 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf96 smp90 dnf117 smp100 tf106 neg93 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 66ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 11:13:36,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb58507d-80af-4e69-a12f-5eb7fa33f377/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