./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 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_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:22:55,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:22:55,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:22:55,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:22:55,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:22:55,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:22:55,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:22:55,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:22:55,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:22:55,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:22:55,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:22:55,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:22:55,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:22:55,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:22:55,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:22:55,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:22:55,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:22:55,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:22:55,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:22:55,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:22:55,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:22:55,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:22:55,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:22:55,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:22:55,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:22:55,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:22:55,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:22:55,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:22:55,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:22:55,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:22:55,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:22:55,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:22:55,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:22:55,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:22:55,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:22:55,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:22:55,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:22:55,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:22:55,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:22:55,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:22:55,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:22:55,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-12-13 21:22:55,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:22:55,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:22:55,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:22:55,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:22:55,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:22:55,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:22:55,595 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:22:55,595 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 21:22:55,595 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 21:22:55,595 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 21:22:55,596 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 21:22:55,596 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 21:22:55,596 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 21:22:55,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:22:55,596 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:22:55,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:22:55,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:22:55,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 21:22:55,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 21:22:55,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 21:22:55,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:22:55,597 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 21:22:55,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:22:55,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 21:22:55,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:22:55,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:22:55,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:22:55,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:22:55,599 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 21:22:55,599 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_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba [2022-12-13 21:22:55,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:22:55,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:22:55,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:22:55,795 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:22:55,796 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:22:55,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2022-12-13 21:22:58,312 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:22:58,458 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:22:58,458 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2022-12-13 21:22:58,462 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/data/d5f165fd8/142e67862729444eb25ae9cc5cfee8d0/FLAGb06c54923 [2022-12-13 21:22:58,888 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/data/d5f165fd8/142e67862729444eb25ae9cc5cfee8d0 [2022-12-13 21:22:58,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:22:58,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:22:58,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:22:58,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:22:58,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:22:58,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:22:58" (1/1) ... [2022-12-13 21:22:58,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a155149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:58, skipping insertion in model container [2022-12-13 21:22:58,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:22:58" (1/1) ... [2022-12-13 21:22:58,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:22:58,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:22:58,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:22:59,003 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:22:59,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:22:59,019 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:22:59,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59 WrapperNode [2022-12-13 21:22:59,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:22:59,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:22:59,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:22:59,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:22:59,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,039 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-12-13 21:22:59,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:22:59,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:22:59,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:22:59,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:22:59,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,050 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:22:59,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:22:59,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:22:59,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:22:59,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (1/1) ... [2022-12-13 21:22:59,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:59,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:22:59,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 21:22:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:22:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:22:59,155 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:22:59,157 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:22:59,189 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:22:59,193 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:22:59,194 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:22:59,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:22:59 BoogieIcfgContainer [2022-12-13 21:22:59,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:22:59,196 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 21:22:59,196 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 21:22:59,199 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 21:22:59,199 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:22:59,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 09:22:58" (1/3) ... [2022-12-13 21:22:59,200 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12b33788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 09:22:59, skipping insertion in model container [2022-12-13 21:22:59,200 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:22:59,200 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:22:59" (2/3) ... [2022-12-13 21:22:59,201 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12b33788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 09:22:59, skipping insertion in model container [2022-12-13 21:22:59,201 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:22:59,201 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:22:59" (3/3) ... [2022-12-13 21:22:59,202 INFO L332 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2022-12-13 21:22:59,245 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 21:22:59,245 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 21:22:59,246 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 21:22:59,246 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 21:22:59,246 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 21:22:59,246 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 21:22:59,246 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 21:22:59,246 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 21:22:59,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:59,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:22:59,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:22:59,263 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:22:59,266 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 21:22:59,266 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 21:22:59,267 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 21:22:59,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:59,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:22:59,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:22:59,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:22:59,268 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 21:22:59,268 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 21:22:59,273 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L17-2true [2022-12-13 21:22:59,274 INFO L750 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_~x~0#1); 4#L17true assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 3#L17-2true [2022-12-13 21:22:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:59,278 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-12-13 21:22:59,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:22:59,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883513418] [2022-12-13 21:22:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:22:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:22:59,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:22:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:22:59,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:22:59,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-12-13 21:22:59,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:22:59,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407729908] [2022-12-13 21:22:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:59,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:22:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:22:59,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:22:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:22:59,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:22:59,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:59,367 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-12-13 21:22:59,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:22:59,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535746708] [2022-12-13 21:22:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:59,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:22:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:22:59,372 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:22:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:22:59,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:22:59,425 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:22:59,426 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:22:59,426 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:22:59,426 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:22:59,426 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:22:59,427 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,427 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:22:59,427 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:22:59,427 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2022-12-13 21:22:59,427 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:22:59,427 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:22:59,441 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:22:59,451 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:22:59,455 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:22:59,530 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:22:59,530 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:22:59,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:59,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:22:59,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 21:22:59,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:22:59,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:22:59,560 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:22:59,560 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:22:59,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:22:59,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:59,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:22:59,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 21:22:59,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:22:59,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:22:59,587 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:22:59,587 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:22:59,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 21:22:59,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:59,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:22:59,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 21:22:59,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:22:59,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:22:59,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 21:22:59,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:59,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:22:59,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 21:22:59,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:22:59,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:22:59,638 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 21:22:59,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 21:22:59,642 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:22:59,642 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:22:59,642 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:22:59,642 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:22:59,643 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 21:22:59,643 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,643 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:22:59,643 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:22:59,643 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2022-12-13 21:22:59,643 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:22:59,643 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:22:59,646 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:22:59,650 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:22:59,653 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:22:59,694 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:22:59,698 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 21:22:59,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:59,700 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:22:59,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 21:22:59,709 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 21:22:59,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:22:59,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:22:59,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:22:59,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:22:59,725 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 21:22:59,725 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 21:22:59,731 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:22:59,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 21:22:59,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:59,736 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:22:59,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 21:22:59,738 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 21:22:59,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:22:59,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:22:59,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:22:59,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:22:59,752 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 21:22:59,752 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 21:22:59,762 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:22:59,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 21:22:59,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:59,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:22:59,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 21:22:59,768 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 21:22:59,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:22:59,779 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:22:59,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:22:59,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:22:59,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:22:59,780 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:22:59,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:22:59,783 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 21:22:59,788 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 21:22:59,788 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 21:22:59,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:22:59,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:59,812 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:22:59,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 21:22:59,814 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 21:22:59,814 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 21:22:59,814 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 21:22:59,815 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 [] [2022-12-13 21:22:59,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 21:22:59,820 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 21:22:59,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:22:59,846 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:22:59,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:22:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:22:59,855 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:22:59,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:22:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:22:59,882 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-12-13 21:22:59,883 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:59,912 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). 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 24 states and 31 transitions. Complement of second has 6 states. [2022-12-13 21:22:59,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-12-13 21:22:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-12-13 21:22:59,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2022-12-13 21:22:59,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:22:59,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2022-12-13 21:22:59,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:22:59,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-12-13 21:22:59,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:22:59,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-12-13 21:22:59,922 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:22:59,925 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-12-13 21:22:59,925 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-12-13 21:22:59,925 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-12-13 21:22:59,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-12-13 21:22:59,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:22:59,926 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-12-13 21:22:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-12-13 21:22:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-12-13 21:22:59,942 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) [2022-12-13 21:22:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-12-13 21:22:59,943 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-12-13 21:22:59,943 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-12-13 21:22:59,943 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 21:22:59,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-12-13 21:22:59,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:22:59,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:22:59,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:22:59,944 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-12-13 21:22:59,944 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 21:22:59,944 INFO L748 eck$LassoCheckResult]: Stem: 72#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 73#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 74#L17-2 assume !!(0 != main_~x~0#1); 67#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 68#L17-2 [2022-12-13 21:22:59,944 INFO L750 eck$LassoCheckResult]: Loop: 68#L17-2 assume !!(0 != main_~x~0#1); 71#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 68#L17-2 [2022-12-13 21:22:59,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:59,945 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-12-13 21:22:59,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:22:59,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370540817] [2022-12-13 21:22:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:59,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:22:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:22:59,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:22:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:22:59,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:22:59,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:59,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-12-13 21:22:59,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:22:59,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325853922] [2022-12-13 21:22:59,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:59,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:22:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:22:59,955 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:22:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:22:59,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:22:59,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-12-13 21:22:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:22:59,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69870026] [2022-12-13 21:22:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:59,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:22:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:00,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:23:00,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69870026] [2022-12-13 21:23:00,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69870026] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:23:00,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:23:00,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:23:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813465024] [2022-12-13 21:23:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:23:00,046 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:23:00,046 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:23:00,047 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:23:00,047 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:23:00,047 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:23:00,047 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,047 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:23:00,047 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:23:00,047 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2022-12-13 21:23:00,047 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:23:00,047 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:23:00,049 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,052 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,054 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,093 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:23:00,093 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:23:00,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,094 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 21:23:00,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:23:00,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:23:00,114 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:23:00,114 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:23:00,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 21:23:00,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,119 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 21:23:00,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:23:00,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:23:00,139 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:23:00,139 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:23:00,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 21:23:00,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,143 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 21:23:00,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:23:00,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:23:00,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 21:23:00,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,161 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 21:23:00,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:23:00,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:23:00,185 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 21:23:00,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-12-13 21:23:00,188 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:23:00,188 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:23:00,188 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:23:00,188 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:23:00,189 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 21:23:00,189 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,189 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:23:00,189 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:23:00,189 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2022-12-13 21:23:00,189 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:23:00,189 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:23:00,191 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,193 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,196 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,234 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:23:00,234 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 21:23:00,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,236 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 21:23:00,238 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 21:23:00,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:23:00,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:23:00,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:23:00,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:23:00,251 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 21:23:00,252 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 21:23:00,256 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:23:00,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 21:23:00,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,260 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 21:23:00,262 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 21:23:00,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:23:00,272 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:23:00,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:23:00,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:23:00,275 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 21:23:00,275 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 21:23:00,279 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:23:00,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 21:23:00,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,284 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 21:23:00,286 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 21:23:00,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:23:00,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:23:00,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:23:00,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:23:00,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:23:00,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:23:00,297 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:23:00,300 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 21:23:00,303 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 21:23:00,303 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 21:23:00,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,304 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 21:23:00,307 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 21:23:00,307 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 21:23:00,307 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 21:23:00,307 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 [] [2022-12-13 21:23:00,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 21:23:00,311 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 21:23:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:00,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:23:00,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:00,333 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:23:00,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:00,336 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-12-13 21:23:00,337 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) [2022-12-13 21:23:00,347 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 12 states and 17 transitions. Complement of second has 5 states. [2022-12-13 21:23:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-12-13 21:23:00,348 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) [2022-12-13 21:23:00,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-12-13 21:23:00,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2022-12-13 21:23:00,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:00,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-12-13 21:23:00,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:00,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2022-12-13 21:23:00,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:00,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2022-12-13 21:23:00,350 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:23:00,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2022-12-13 21:23:00,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-12-13 21:23:00,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-12-13 21:23:00,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-12-13 21:23:00,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:23:00,351 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-12-13 21:23:00,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-12-13 21:23:00,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-12-13 21:23:00,352 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) [2022-12-13 21:23:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-12-13 21:23:00,352 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-12-13 21:23:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:23:00,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:23:00,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:23:00,355 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:23:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:23:00,366 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-12-13 21:23:00,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-12-13 21:23:00,366 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:23:00,367 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2022-12-13 21:23:00,367 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-12-13 21:23:00,367 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-12-13 21:23:00,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2022-12-13 21:23:00,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:23:00,367 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-12-13 21:23:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2022-12-13 21:23:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2022-12-13 21:23:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:23:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-12-13 21:23:00,368 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-12-13 21:23:00,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:23:00,369 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-12-13 21:23:00,369 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 21:23:00,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2022-12-13 21:23:00,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:23:00,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:23:00,370 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:23:00,370 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 21:23:00,370 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 21:23:00,370 INFO L748 eck$LassoCheckResult]: Stem: 153#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 154#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 155#L17-2 assume !!(0 != main_~x~0#1); 150#L17 [2022-12-13 21:23:00,370 INFO L750 eck$LassoCheckResult]: Loop: 150#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 149#L17-2 assume !!(0 != main_~x~0#1); 150#L17 [2022-12-13 21:23:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:00,370 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-12-13 21:23:00,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:23:00,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912958174] [2022-12-13 21:23:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:23:00,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:23:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:23:00,374 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:23:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:23:00,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:23:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2022-12-13 21:23:00,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:23:00,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806408190] [2022-12-13 21:23:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:23:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:23:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:23:00,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:23:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:23:00,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:23:00,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:00,387 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 2 times [2022-12-13 21:23:00,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:23:00,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058413557] [2022-12-13 21:23:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:23:00,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:23:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:23:00,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:23:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:23:00,396 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:23:00,410 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:23:00,410 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:23:00,410 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:23:00,410 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:23:00,410 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:23:00,410 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,411 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:23:00,411 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:23:00,411 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2022-12-13 21:23:00,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:23:00,411 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:23:00,412 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,418 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,421 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,455 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:23:00,455 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:23:00,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,456 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-12-13 21:23:00,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:23:00,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:23:00,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-12-13 21:23:00,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,473 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 21:23:00,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:23:00,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:23:00,530 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 21:23:00,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 21:23:00,533 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:23:00,533 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:23:00,533 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:23:00,533 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:23:00,533 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 21:23:00,533 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,533 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:23:00,533 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:23:00,533 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2022-12-13 21:23:00,533 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:23:00,534 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:23:00,534 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,540 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,542 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,574 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:23:00,574 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 21:23:00,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,576 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 21:23:00,578 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 21:23:00,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:23:00,588 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:23:00,588 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:23:00,588 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:23:00,588 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:23:00,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:23:00,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:23:00,591 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 21:23:00,594 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 21:23:00,594 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 21:23:00,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,596 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 21:23:00,598 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 21:23:00,598 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 21:23:00,598 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 21:23:00,598 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 [] [2022-12-13 21:23:00,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-12-13 21:23:00,601 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 21:23:00,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:00,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:23:00,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:00,617 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:23:00,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:00,642 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 21:23:00,642 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:23:00,649 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 14 transitions. Complement of second has 5 states. [2022-12-13 21:23:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-12-13 21:23:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:23:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-12-13 21:23:00,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-12-13 21:23:00,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:00,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2022-12-13 21:23:00,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:00,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2022-12-13 21:23:00,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:00,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2022-12-13 21:23:00,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:23:00,652 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2022-12-13 21:23:00,652 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-12-13 21:23:00,652 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-12-13 21:23:00,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2022-12-13 21:23:00,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:23:00,653 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-12-13 21:23:00,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2022-12-13 21:23:00,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-12-13 21:23:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:23:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-12-13 21:23:00,654 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-12-13 21:23:00,654 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-12-13 21:23:00,654 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 21:23:00,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2022-12-13 21:23:00,654 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 21:23:00,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:23:00,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:23:00,654 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2022-12-13 21:23:00,655 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 21:23:00,655 INFO L748 eck$LassoCheckResult]: Stem: 208#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 209#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 203#L17-2 assume !!(0 != main_~x~0#1); 204#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 205#L17-2 assume !!(0 != main_~x~0#1); 206#L17 [2022-12-13 21:23:00,655 INFO L750 eck$LassoCheckResult]: Loop: 206#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 207#L17-2 assume !!(0 != main_~x~0#1); 206#L17 [2022-12-13 21:23:00,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:00,655 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2022-12-13 21:23:00,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:23:00,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572120884] [2022-12-13 21:23:00,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:23:00,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:23:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:23:00,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:23:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:23:00,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:23:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2022-12-13 21:23:00,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:23:00,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214223768] [2022-12-13 21:23:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:23:00,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:23:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:23:00,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:23:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:23:00,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:23:00,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:00,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 2 times [2022-12-13 21:23:00,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:23:00,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87052552] [2022-12-13 21:23:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:23:00,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:23:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:23:00,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87052552] [2022-12-13 21:23:00,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87052552] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:23:00,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082433482] [2022-12-13 21:23:00,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:23:00,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:23:00,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,694 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 21:23:00,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:23:00,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:23:00,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:23:00,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:00,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:23:00,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-12-13 21:23:00,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 21:23:00,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 21:23:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:00,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082433482] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:23:00,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:23:00,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-12-13 21:23:00,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403204415] [2022-12-13 21:23:00,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:23:00,771 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:23:00,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:23:00,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:23:00,771 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:23:00,771 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:23:00,771 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,771 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:23:00,771 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:23:00,771 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2022-12-13 21:23:00,772 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:23:00,772 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:23:00,773 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,775 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,780 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,806 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:23:00,806 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:23:00,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,807 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 21:23:00,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:23:00,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:23:00,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:23:00,827 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:23:00,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-12-13 21:23:00,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,830 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 21:23:00,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:23:00,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:23:00,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-12-13 21:23:00,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,846 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 21:23:00,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:23:00,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:23:00,905 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 21:23:00,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-12-13 21:23:00,908 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:23:00,908 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:23:00,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:23:00,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:23:00,908 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 21:23:00,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,908 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:23:00,908 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:23:00,908 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2022-12-13 21:23:00,908 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:23:00,908 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:23:00,910 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,915 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,917 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:23:00,941 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:23:00,942 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 21:23:00,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,943 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 21:23:00,945 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 21:23:00,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:23:00,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:23:00,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:23:00,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:23:00,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:23:00,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:23:00,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:23:00,958 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 21:23:00,961 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 21:23:00,961 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 21:23:00,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:23:00,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:23:00,962 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:23:00,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 21:23:00,964 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 21:23:00,964 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 21:23:00,964 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 21:23:00,964 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 [] [2022-12-13 21:23:00,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-12-13 21:23:00,967 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 21:23:00,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:00,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:23:00,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:00,986 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:23:00,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:00,998 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 21:23:00,998 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 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) [2022-12-13 21:23:01,002 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. 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 8 states and 9 transitions. Complement of second has 3 states. [2022-12-13 21:23:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-12-13 21:23:01,003 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) [2022-12-13 21:23:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-12-13 21:23:01,003 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2022-12-13 21:23:01,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:01,004 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 21:23:01,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:01,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:23:01,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:01,022 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:23:01,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:01,034 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 21:23:01,034 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 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) [2022-12-13 21:23:01,038 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. 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 8 states and 9 transitions. Complement of second has 3 states. [2022-12-13 21:23:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-12-13 21:23:01,039 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) [2022-12-13 21:23:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-12-13 21:23:01,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2022-12-13 21:23:01,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:01,039 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 21:23:01,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:23:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:01,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:23:01,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:23:01,057 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:23:01,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:23:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:01,069 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 21:23:01,069 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 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) [2022-12-13 21:23:01,076 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. 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 9 states and 10 transitions. Complement of second has 4 states. [2022-12-13 21:23:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-12-13 21:23:01,077 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) [2022-12-13 21:23:01,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-12-13 21:23:01,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2022-12-13 21:23:01,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:01,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2022-12-13 21:23:01,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:01,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2022-12-13 21:23:01,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:23:01,078 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-12-13 21:23:01,078 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 21:23:01,079 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2022-12-13 21:23:01,079 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 21:23:01,079 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 21:23:01,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 21:23:01,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:23:01,079 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:23:01,079 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:23:01,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:23:01,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:23:01,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:23:01,079 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:23:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:23:01,079 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-12-13 21:23:01,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-12-13 21:23:01,080 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 21:23:01,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 21:23:01,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 21:23:01,080 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 21:23:01,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 21:23:01,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:23:01,080 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:23:01,080 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:23:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:23:01,080 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:23:01,080 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 21:23:01,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 21:23:01,081 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 21:23:01,081 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 21:23:01,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 09:23:01 BoogieIcfgContainer [2022-12-13 21:23:01,086 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 21:23:01,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:23:01,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:23:01,086 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:23:01,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:22:59" (3/4) ... [2022-12-13 21:23:01,088 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 21:23:01,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:23:01,089 INFO L158 Benchmark]: Toolchain (without parser) took 2197.36ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 101.7MB in the beginning and 126.4MB in the end (delta: -24.6MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2022-12-13 21:23:01,089 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 136.3MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:23:01,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 127.82ms. Allocated memory is still 136.3MB. Free memory was 101.7MB in the beginning and 92.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 21:23:01,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.64ms. Allocated memory is still 136.3MB. Free memory was 92.7MB in the beginning and 91.8MB in the end (delta: 891.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:23:01,090 INFO L158 Benchmark]: Boogie Preprocessor took 11.76ms. Allocated memory is still 136.3MB. Free memory was 91.2MB in the beginning and 90.6MB in the end (delta: 601.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:23:01,090 INFO L158 Benchmark]: RCFGBuilder took 143.41ms. Allocated memory is still 136.3MB. Free memory was 90.6MB in the beginning and 82.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 21:23:01,090 INFO L158 Benchmark]: BuchiAutomizer took 1889.93ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 82.2MB in the beginning and 127.4MB in the end (delta: -45.2MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-12-13 21:23:01,090 INFO L158 Benchmark]: Witness Printer took 2.30ms. Allocated memory is still 186.6MB. Free memory was 127.4MB in the beginning and 126.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:23:01,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 136.3MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 127.82ms. Allocated memory is still 136.3MB. Free memory was 101.7MB in the beginning and 92.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.64ms. Allocated memory is still 136.3MB. Free memory was 92.7MB in the beginning and 91.8MB in the end (delta: 891.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.76ms. Allocated memory is still 136.3MB. Free memory was 91.2MB in the beginning and 90.6MB in the end (delta: 601.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 143.41ms. Allocated memory is still 136.3MB. Free memory was 90.6MB in the beginning and 82.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1889.93ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 82.2MB in the beginning and 127.4MB in the end (delta: -45.2MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Witness Printer took 2.30ms. Allocated memory is still 186.6MB. Free memory was 127.4MB in the beginning and 126.4MB in the end (delta: 1.0MB). 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function -1 * x and consists of 3 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 29 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax182 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf95 smp68 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 21:23:01,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-12-13 21:23:01,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-13 21:23:01,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56bf035a-85ea-4604-9e3e-eedd149417e8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE