./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:14:01,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:14:01,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:14:01,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:14:01,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:14:01,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:14:01,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:14:01,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:14:01,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:14:01,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:14:01,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:14:01,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:14:01,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:14:01,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:14:01,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:14:01,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:14:01,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:14:01,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:14:01,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:14:01,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:14:01,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:14:01,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:14:01,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:14:01,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:14:01,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:14:01,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:14:01,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:14:01,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:14:01,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:14:01,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:14:01,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:14:01,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:14:01,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:14:01,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:14:01,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:14:01,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:14:01,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:14:01,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:14:01,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:14:01,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:14:01,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:14:01,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-20 11:14:01,569 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:14:01,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:14:01,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:14:01,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:14:01,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:14:01,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:14:01,572 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:14:01,572 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 11:14:01,573 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 11:14:01,573 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 11:14:01,574 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 11:14:01,574 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 11:14:01,575 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 11:14:01,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:14:01,575 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:14:01,575 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:14:01,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:14:01,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:14:01,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:14:01,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 11:14:01,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 11:14:01,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 11:14:01,577 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:14:01,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:14:01,577 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 11:14:01,577 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:14:01,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 11:14:01,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:14:01,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:14:01,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:14:01,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:14:01,581 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 11:14:01,581 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_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc [2022-11-20 11:14:01,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:14:01,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:14:01,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:14:01,928 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:14:01,929 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:14:01,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/loop-invgen/nested6.i [2022-11-20 11:14:05,151 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:14:05,431 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:14:05,431 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/sv-benchmarks/c/loop-invgen/nested6.i [2022-11-20 11:14:05,438 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/data/b74068858/bbaa60a543624e4da0d634aa53213899/FLAG9f303e0e6 [2022-11-20 11:14:05,452 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/data/b74068858/bbaa60a543624e4da0d634aa53213899 [2022-11-20 11:14:05,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:14:05,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:14:05,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:14:05,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:14:05,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:14:05,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25548216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05, skipping insertion in model container [2022-11-20 11:14:05,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:14:05,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:14:05,634 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2022-11-20 11:14:05,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:14:05,655 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:14:05,668 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2022-11-20 11:14:05,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:14:05,686 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:14:05,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05 WrapperNode [2022-11-20 11:14:05,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:14:05,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:14:05,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:14:05,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:14:05,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,721 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2022-11-20 11:14:05,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:14:05,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:14:05,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:14:05,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:14:05,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:14:05,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:14:05,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:14:05,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:14:05,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (1/1) ... [2022-11-20 11:14:05,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:05,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:05,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:05,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 11:14:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:14:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:14:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:14:05,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:14:05,895 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:14:05,897 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:14:06,041 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:14:06,050 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:14:06,051 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:14:06,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:06 BoogieIcfgContainer [2022-11-20 11:14:06,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:14:06,066 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 11:14:06,066 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 11:14:06,071 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 11:14:06,072 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:14:06,072 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 11:14:05" (1/3) ... [2022-11-20 11:14:06,073 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@700f8ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 11:14:06, skipping insertion in model container [2022-11-20 11:14:06,074 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:14:06,074 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:05" (2/3) ... [2022-11-20 11:14:06,074 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@700f8ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 11:14:06, skipping insertion in model container [2022-11-20 11:14:06,075 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:14:06,075 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:06" (3/3) ... [2022-11-20 11:14:06,081 INFO L332 chiAutomizerObserver]: Analyzing ICFG nested6.i [2022-11-20 11:14:06,198 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 11:14:06,198 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 11:14:06,198 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 11:14:06,198 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 11:14:06,199 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 11:14:06,199 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 11:14:06,199 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 11:14:06,199 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 11:14:06,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:06,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-20 11:14:06,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:14:06,251 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:14:06,256 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-20 11:14:06,257 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 11:14:06,257 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 11:14:06,257 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:06,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-20 11:14:06,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:14:06,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:14:06,260 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-20 11:14:06,260 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 11:14:06,270 INFO L748 eck$LassoCheckResult]: Stem: 17#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 23#L28true assume !!(main_~n~0#1 < 1000000); 19#L29true assume main_~k~0#1 == main_~n~0#1; 20#L29-1true main_~i~0#1 := 0; 24#L33-3true [2022-11-20 11:14:06,270 INFO L750 eck$LassoCheckResult]: Loop: 24#L33-3true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 15#L34-3true assume !true; 21#L33-2true main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 24#L33-3true [2022-11-20 11:14:06,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash 28695784, now seen corresponding path program 1 times [2022-11-20 11:14:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:06,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341425468] [2022-11-20 11:14:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:06,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:06,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:06,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 53559, now seen corresponding path program 1 times [2022-11-20 11:14:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:06,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027104900] [2022-11-20 11:14:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:06,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:06,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027104900] [2022-11-20 11:14:06,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027104900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:06,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:06,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:14:06,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067757792] [2022-11-20 11:14:06,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:06,548 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 11:14:06,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:06,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:14:06,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:14:06,594 INFO L87 Difference]: Start difference. First operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:06,609 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-11-20 11:14:06,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2022-11-20 11:14:06,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-20 11:14:06,628 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 21 transitions. [2022-11-20 11:14:06,629 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-11-20 11:14:06,629 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-20 11:14:06,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2022-11-20 11:14:06,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:06,631 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-20 11:14:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2022-11-20 11:14:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-20 11:14:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-20 11:14:06,670 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-20 11:14:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:14:06,679 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-20 11:14:06,680 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 11:14:06,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2022-11-20 11:14:06,682 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-11-20 11:14:06,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:14:06,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:14:06,683 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-20 11:14:06,684 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 11:14:06,684 INFO L748 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 59#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 66#L28 assume !!(main_~n~0#1 < 1000000); 62#L29 assume main_~k~0#1 == main_~n~0#1; 63#L29-1 main_~i~0#1 := 0; 64#L33-3 [2022-11-20 11:14:06,684 INFO L750 eck$LassoCheckResult]: Loop: 64#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 70#L34-3 assume !(main_~j~0#1 < main_~n~0#1); 65#L33-2 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 64#L33-3 [2022-11-20 11:14:06,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash 28695784, now seen corresponding path program 2 times [2022-11-20 11:14:06,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:06,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662713242] [2022-11-20 11:14:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:06,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:06,698 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:06,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:06,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:06,719 INFO L85 PathProgramCache]: Analyzing trace with hash 51885, now seen corresponding path program 1 times [2022-11-20 11:14:06,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:06,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403206919] [2022-11-20 11:14:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:06,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:06,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:06,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:06,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:06,748 INFO L85 PathProgramCache]: Analyzing trace with hash 177631334, now seen corresponding path program 1 times [2022-11-20 11:14:06,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:06,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137577473] [2022-11-20 11:14:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:06,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:06,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:06,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137577473] [2022-11-20 11:14:06,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137577473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:06,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:06,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:14:06,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291815121] [2022-11-20 11:14:06,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:06,907 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:14:06,907 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:14:06,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:14:06,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:14:06,908 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:14:06,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:06,908 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:14:06,908 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:14:06,908 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration2_Loop [2022-11-20 11:14:06,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:14:06,909 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:14:06,928 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:06,951 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:07,002 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:14:07,003 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:14:07,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:07,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:07,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:07,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 11:14:07,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:14:07,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:07,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:07,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:07,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:07,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:07,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:14:07,071 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:07,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 11:14:07,292 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:14:07,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:07,296 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:14:07,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:14:07,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:14:07,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:14:07,297 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:14:07,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:07,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:14:07,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:14:07,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration2_Loop [2022-11-20 11:14:07,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:14:07,297 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:14:07,299 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:07,333 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:07,385 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:14:07,390 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:14:07,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:07,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:07,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:07,398 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:14:07,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:14:07,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:14:07,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:14:07,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:14:07,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:14:07,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 11:14:07,420 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:14:07,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:14:07,431 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:14:07,449 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 11:14:07,449 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 11:14:07,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:07,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:07,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:07,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 11:14:07,479 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:14:07,479 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:14:07,480 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:14:07,480 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-20 11:14:07,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:07,490 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:14:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:14:07,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,578 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:14:07,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:07,631 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:14:07,632 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:07,730 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 40 transitions. Complement of second has 4 states. [2022-11-20 11:14:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 11:14:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 21 transitions. [2022-11-20 11:14:07,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 5 letters. Loop has 3 letters. [2022-11-20 11:14:07,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:07,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 8 letters. Loop has 3 letters. [2022-11-20 11:14:07,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:07,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 5 letters. Loop has 6 letters. [2022-11-20 11:14:07,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:07,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2022-11-20 11:14:07,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:07,766 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-20 11:14:07,767 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 31 states and 38 transitions. [2022-11-20 11:14:07,767 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-20 11:14:07,769 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-20 11:14:07,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 38 transitions. [2022-11-20 11:14:07,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:14:07,769 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-20 11:14:07,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 38 transitions. [2022-11-20 11:14:07,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-11-20 11:14:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:07,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2022-11-20 11:14:07,786 INFO L240 hiAutomatonCegarLoop]: Abstraction has 30 states and 37 transitions. [2022-11-20 11:14:07,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:07,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:14:07,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:07,788 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:07,822 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2022-11-20 11:14:07,822 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 67 transitions. [2022-11-20 11:14:07,823 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2022-11-20 11:14:07,824 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 55 states and 67 transitions. [2022-11-20 11:14:07,824 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2022-11-20 11:14:07,824 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2022-11-20 11:14:07,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 67 transitions. [2022-11-20 11:14:07,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:14:07,825 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 67 transitions. [2022-11-20 11:14:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 67 transitions. [2022-11-20 11:14:07,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2022-11-20 11:14:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-11-20 11:14:07,830 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-20 11:14:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:14:07,835 INFO L428 stractBuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-20 11:14:07,836 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 11:14:07,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2022-11-20 11:14:07,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-20 11:14:07,840 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:14:07,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:14:07,840 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:14:07,840 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:14:07,841 INFO L748 eck$LassoCheckResult]: Stem: 238#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 239#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 249#L28 assume !!(main_~n~0#1 < 1000000); 244#L29 assume main_~k~0#1 == main_~n~0#1; 245#L29-1 main_~i~0#1 := 0; 246#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 256#L34-3 [2022-11-20 11:14:07,841 INFO L750 eck$LassoCheckResult]: Loop: 256#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 267#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 250#L36-3 assume !(main_~k~0#1 < main_~n~0#1); 251#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 256#L34-3 [2022-11-20 11:14:07,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:07,842 INFO L85 PathProgramCache]: Analyzing trace with hash 889569326, now seen corresponding path program 1 times [2022-11-20 11:14:07,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:07,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357223607] [2022-11-20 11:14:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:07,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:07,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:07,867 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1850253, now seen corresponding path program 1 times [2022-11-20 11:14:07,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:07,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580963928] [2022-11-20 11:14:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:07,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:07,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:07,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580963928] [2022-11-20 11:14:07,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580963928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:07,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:07,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:14:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748480095] [2022-11-20 11:14:07,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:07,940 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 11:14:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:14:07,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:07,942 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:08,003 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-11-20 11:14:08,003 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 40 transitions. [2022-11-20 11:14:08,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 11:14:08,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 40 transitions. [2022-11-20 11:14:08,011 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-11-20 11:14:08,012 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-20 11:14:08,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 40 transitions. [2022-11-20 11:14:08,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:14:08,013 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-20 11:14:08,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 40 transitions. [2022-11-20 11:14:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-20 11:14:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-11-20 11:14:08,021 INFO L240 hiAutomatonCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-20 11:14:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:14:08,023 INFO L428 stractBuchiCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-20 11:14:08,023 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 11:14:08,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 40 transitions. [2022-11-20 11:14:08,024 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 11:14:08,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:14:08,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:14:08,025 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:14:08,025 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:08,025 INFO L748 eck$LassoCheckResult]: Stem: 311#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 312#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 322#L28 assume !!(main_~n~0#1 < 1000000); 317#L29 assume main_~k~0#1 == main_~n~0#1; 318#L29-1 main_~i~0#1 := 0; 319#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 331#L34-3 [2022-11-20 11:14:08,025 INFO L750 eck$LassoCheckResult]: Loop: 331#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 342#L35 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 339#L18-3 assume !(0 == __VERIFIER_assert_~cond#1); 313#L18-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 <= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 314#L18-6 assume !(0 == __VERIFIER_assert_~cond#1); 327#L18-8 assume { :end_inline___VERIFIER_assert } true; 328#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 331#L34-3 [2022-11-20 11:14:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:08,026 INFO L85 PathProgramCache]: Analyzing trace with hash 889569326, now seen corresponding path program 2 times [2022-11-20 11:14:08,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:08,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627580138] [2022-11-20 11:14:08,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:08,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:08,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:08,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash 25769677, now seen corresponding path program 1 times [2022-11-20 11:14:08,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:08,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238202178] [2022-11-20 11:14:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:08,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:08,075 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:08,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash 824203776, now seen corresponding path program 1 times [2022-11-20 11:14:08,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:08,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137970595] [2022-11-20 11:14:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:08,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:08,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:08,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:08,215 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:14:08,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:14:08,215 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:14:08,215 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:14:08,215 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:14:08,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:08,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:14:08,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:14:08,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration4_Loop [2022-11-20 11:14:08,216 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:14:08,216 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:14:08,218 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:08,228 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:08,231 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:08,234 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:08,296 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:14:08,297 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:14:08,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:08,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:08,299 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:08,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:14:08,307 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:08,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 11:14:08,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:08,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:08,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:08,346 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:08,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:14:08,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:08,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 11:14:08,686 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:14:08,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:08,691 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:14:08,691 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:14:08,691 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:14:08,691 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:14:08,691 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:14:08,691 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:08,691 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:14:08,691 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:14:08,691 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration4_Loop [2022-11-20 11:14:08,691 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:14:08,691 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:14:08,693 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:08,703 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:08,714 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:08,718 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:08,775 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:14:08,775 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:14:08,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:08,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:08,778 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:08,787 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:14:08,800 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:14:08,800 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:14:08,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:14:08,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:14:08,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:14:08,802 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:14:08,802 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:14:08,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 11:14:08,817 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:14:08,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:08,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:08,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:08,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:08,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 11:14:08,842 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:14:08,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:14:08,855 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:14:08,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:14:08,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:14:08,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:14:08,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:14:08,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:14:08,867 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:14:08,870 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:14:08,870 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 11:14:08,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:08,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:08,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:08,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 11:14:08,884 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:14:08,885 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:14:08,885 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:14:08,885 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-11-20 11:14:08,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:08,897 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:14:08,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:08,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:14:08,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:08,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:14:08,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:09,052 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:14:09,053 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 40 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:09,085 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 40 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 103 transitions. Complement of second has 7 states. [2022-11-20 11:14:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:14:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2022-11-20 11:14:09,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 7 letters. [2022-11-20 11:14:09,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:09,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 13 letters. Loop has 7 letters. [2022-11-20 11:14:09,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:09,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 14 letters. [2022-11-20 11:14:09,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:09,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 103 transitions. [2022-11-20 11:14:09,091 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2022-11-20 11:14:09,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 66 states and 81 transitions. [2022-11-20 11:14:09,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-11-20 11:14:09,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-20 11:14:09,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 81 transitions. [2022-11-20 11:14:09,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:14:09,092 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 81 transitions. [2022-11-20 11:14:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 81 transitions. [2022-11-20 11:14:09,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 51. [2022-11-20 11:14:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 50 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2022-11-20 11:14:09,096 INFO L240 hiAutomatonCegarLoop]: Abstraction has 51 states and 62 transitions. [2022-11-20 11:14:09,096 INFO L428 stractBuchiCegarLoop]: Abstraction has 51 states and 62 transitions. [2022-11-20 11:14:09,097 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 11:14:09,097 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 62 transitions. [2022-11-20 11:14:09,097 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2022-11-20 11:14:09,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:14:09,098 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:14:09,098 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:09,098 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:14:09,098 INFO L748 eck$LassoCheckResult]: Stem: 490#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 491#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 501#L28 assume !!(main_~n~0#1 < 1000000); 496#L29 assume main_~k~0#1 == main_~n~0#1; 497#L29-1 main_~i~0#1 := 0; 498#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 522#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 525#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 502#L36-3 [2022-11-20 11:14:09,099 INFO L750 eck$LassoCheckResult]: Loop: 502#L36-3 assume !!(main_~k~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 503#L18 assume !(0 == __VERIFIER_assert_~cond#1); 518#L18-2 assume { :end_inline___VERIFIER_assert } true; 512#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 502#L36-3 [2022-11-20 11:14:09,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:09,099 INFO L85 PathProgramCache]: Analyzing trace with hash 177631345, now seen corresponding path program 1 times [2022-11-20 11:14:09,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:09,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429105732] [2022-11-20 11:14:09,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:09,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:09,113 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:09,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:09,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2192714, now seen corresponding path program 1 times [2022-11-20 11:14:09,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:09,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847514056] [2022-11-20 11:14:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:09,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:09,145 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:09,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2764218, now seen corresponding path program 1 times [2022-11-20 11:14:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:09,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229166427] [2022-11-20 11:14:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:09,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:09,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:09,249 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:14:09,249 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:14:09,249 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:14:09,249 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:14:09,249 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:14:09,249 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:09,250 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:14:09,250 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:14:09,250 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration5_Loop [2022-11-20 11:14:09,250 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:14:09,250 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:14:09,251 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:09,254 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:09,264 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:09,313 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:14:09,313 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:14:09,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:09,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:09,315 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:09,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:14:09,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:09,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 11:14:09,348 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:14:09,348 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:14:09,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:09,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:09,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:09,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:09,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 11:14:09,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:14:09,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:09,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:09,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:09,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:09,436 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:09,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:14:09,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:09,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 11:14:09,679 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:14:09,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:09,683 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:14:09,683 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:14:09,683 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:14:09,683 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:14:09,684 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:14:09,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:09,684 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:14:09,684 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:14:09,684 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration5_Loop [2022-11-20 11:14:09,684 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:14:09,684 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:14:09,685 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:09,692 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:09,695 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:09,750 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:14:09,751 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:14:09,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:09,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:09,752 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:09,768 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 [2022-11-20 11:14:09,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 11:14:09,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:14:09,781 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:14:09,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:14:09,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:14:09,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:14:09,783 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:14:09,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:14:09,793 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:14:09,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:09,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:09,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:09,809 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:09,819 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:14:09,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:14:09,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:14:09,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:14:09,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:14:09,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:14:09,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 11:14:09,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:14:09,835 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:14:09,849 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:14:09,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:09,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:09,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:09,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:09,875 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:14:09,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 11:14:09,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:14:09,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:14:09,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:14:09,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:14:09,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:14:09,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:14:09,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:14:09,910 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:14:09,916 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 11:14:09,916 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 11:14:09,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:09,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:09,920 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:09,932 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:14:09,932 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:14:09,932 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:14:09,932 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~k~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~k~0#1 Supporting invariants [] [2022-11-20 11:14:09,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 11:14:09,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:09,938 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:14:09,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:09,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:14:09,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:09,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:14:09,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:10,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-11-20 11:14:10,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:10,054 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:14:10,054 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 62 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:10,108 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 62 transitions. cyclomatic complexity: 15. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 157 states and 192 transitions. Complement of second has 7 states. [2022-11-20 11:14:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:14:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2022-11-20 11:14:10,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 8 letters. Loop has 4 letters. [2022-11-20 11:14:10,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:10,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 12 letters. Loop has 4 letters. [2022-11-20 11:14:10,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:10,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 8 letters. Loop has 8 letters. [2022-11-20 11:14:10,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:10,112 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 192 transitions. [2022-11-20 11:14:10,114 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 30 [2022-11-20 11:14:10,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 114 states and 138 transitions. [2022-11-20 11:14:10,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2022-11-20 11:14:10,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2022-11-20 11:14:10,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 138 transitions. [2022-11-20 11:14:10,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:14:10,116 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 138 transitions. [2022-11-20 11:14:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 138 transitions. [2022-11-20 11:14:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 79. [2022-11-20 11:14:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 78 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2022-11-20 11:14:10,122 INFO L240 hiAutomatonCegarLoop]: Abstraction has 79 states and 95 transitions. [2022-11-20 11:14:10,122 INFO L428 stractBuchiCegarLoop]: Abstraction has 79 states and 95 transitions. [2022-11-20 11:14:10,123 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 11:14:10,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79 states and 95 transitions. [2022-11-20 11:14:10,123 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 23 [2022-11-20 11:14:10,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:14:10,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:14:10,124 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:10,125 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:10,125 INFO L748 eck$LassoCheckResult]: Stem: 757#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 758#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 768#L28 assume !!(main_~n~0#1 < 1000000); 763#L29 assume main_~k~0#1 == main_~n~0#1; 764#L29-1 main_~i~0#1 := 0; 765#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 787#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 805#L35 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 811#L18-3 assume !(0 == __VERIFIER_assert_~cond#1); 810#L18-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 <= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 809#L18-6 assume !(0 == __VERIFIER_assert_~cond#1); 808#L18-8 assume { :end_inline___VERIFIER_assert } true; 807#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 801#L34-3 assume !(main_~j~0#1 < main_~n~0#1); 803#L33-2 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 800#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 798#L34-3 [2022-11-20 11:14:10,125 INFO L750 eck$LassoCheckResult]: Loop: 798#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 796#L35 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 797#L18-3 assume !(0 == __VERIFIER_assert_~cond#1); 806#L18-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 <= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 804#L18-6 assume !(0 == __VERIFIER_assert_~cond#1); 802#L18-8 assume { :end_inline___VERIFIER_assert } true; 799#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 798#L34-3 [2022-11-20 11:14:10,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:10,126 INFO L85 PathProgramCache]: Analyzing trace with hash -473310882, now seen corresponding path program 1 times [2022-11-20 11:14:10,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:10,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191634651] [2022-11-20 11:14:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:10,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:10,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:10,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191634651] [2022-11-20 11:14:10,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191634651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:14:10,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890647475] [2022-11-20 11:14:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:10,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:10,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:10,242 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:14:10,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:14:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:10,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:14:10,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:10,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:14:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:10,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890647475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:14:10,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:14:10,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-20 11:14:10,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555725498] [2022-11-20 11:14:10,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:14:10,549 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 11:14:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:10,550 INFO L85 PathProgramCache]: Analyzing trace with hash 25769677, now seen corresponding path program 2 times [2022-11-20 11:14:10,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:10,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169397651] [2022-11-20 11:14:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:10,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:10,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:10,640 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:14:10,641 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:14:10,641 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:14:10,641 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:14:10,641 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:14:10,641 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:10,641 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:14:10,641 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:14:10,642 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration6_Loop [2022-11-20 11:14:10,642 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:14:10,642 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:14:10,643 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:10,649 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:10,653 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:10,662 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:10,712 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:14:10,712 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:14:10,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:10,714 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:10,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:14:10,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:10,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 11:14:10,758 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:14:10,758 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:14:10,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:10,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:10,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:10,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:10,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:14:10,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:10,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 11:14:10,818 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:14:10,818 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=0} Honda state: {ULTIMATE.start_main_#t~nondet5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:14:10,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:10,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:10,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:10,829 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:10,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 11:14:10,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:14:10,837 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:10,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:10,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:10,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:10,871 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:10,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:14:10,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:10,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 11:14:11,249 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:14:11,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:11,253 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:14:11,253 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:14:11,253 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:14:11,253 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:14:11,254 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:14:11,254 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:11,254 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:14:11,254 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:14:11,254 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration6_Loop [2022-11-20 11:14:11,254 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:14:11,254 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:14:11,258 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:11,270 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:11,276 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:11,279 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:11,335 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:14:11,340 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:14:11,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:11,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:11,342 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:11,350 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:14:11,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:14:11,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:14:11,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:14:11,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:14:11,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:14:11,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:14:11,373 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:14:11,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 11:14:11,389 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:14:11,404 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:14:11,405 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 11:14:11,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:11,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:11,406 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:11,414 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:14:11,415 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:14:11,415 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:14:11,415 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-11-20 11:14:11,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 11:14:11,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:11,419 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:14:11,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:14:11,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:14:11,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:11,527 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:14:11,527 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:11,562 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 145 states and 177 transitions. Complement of second has 7 states. [2022-11-20 11:14:11,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:14:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2022-11-20 11:14:11,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 16 letters. Loop has 7 letters. [2022-11-20 11:14:11,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:11,566 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:14:11,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:14:11,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:14:11,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:11,669 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:14:11,669 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:11,693 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 145 states and 177 transitions. Complement of second has 7 states. [2022-11-20 11:14:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:14:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2022-11-20 11:14:11,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 16 letters. Loop has 7 letters. [2022-11-20 11:14:11,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:11,697 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:14:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:14:11,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:14:11,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:11,779 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:14:11,779 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:11,808 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 146 states and 177 transitions. Complement of second has 6 states. [2022-11-20 11:14:11,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:14:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-11-20 11:14:11,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 7 letters. [2022-11-20 11:14:11,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:11,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 23 letters. Loop has 7 letters. [2022-11-20 11:14:11,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:11,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 14 letters. [2022-11-20 11:14:11,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:11,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 146 states and 177 transitions. [2022-11-20 11:14:11,813 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-11-20 11:14:11,814 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 146 states to 87 states and 105 transitions. [2022-11-20 11:14:11,814 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-11-20 11:14:11,814 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-20 11:14:11,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 105 transitions. [2022-11-20 11:14:11,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:14:11,814 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 105 transitions. [2022-11-20 11:14:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 105 transitions. [2022-11-20 11:14:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 56. [2022-11-20 11:14:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 55 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-11-20 11:14:11,818 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-11-20 11:14:11,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:11,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:14:11,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:14:11,819 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:11,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:11,918 INFO L93 Difference]: Finished difference Result 173 states and 206 transitions. [2022-11-20 11:14:11,919 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 173 states and 206 transitions. [2022-11-20 11:14:11,920 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2022-11-20 11:14:11,922 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 173 states to 169 states and 202 transitions. [2022-11-20 11:14:11,922 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-11-20 11:14:11,922 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2022-11-20 11:14:11,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 202 transitions. [2022-11-20 11:14:11,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:14:11,923 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 202 transitions. [2022-11-20 11:14:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 202 transitions. [2022-11-20 11:14:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 70. [2022-11-20 11:14:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 69 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2022-11-20 11:14:11,928 INFO L240 hiAutomatonCegarLoop]: Abstraction has 70 states and 85 transitions. [2022-11-20 11:14:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:14:11,929 INFO L428 stractBuchiCegarLoop]: Abstraction has 70 states and 85 transitions. [2022-11-20 11:14:11,929 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-20 11:14:11,929 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 85 transitions. [2022-11-20 11:14:11,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 11:14:11,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:14:11,931 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:14:11,931 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:11,931 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:14:11,932 INFO L748 eck$LassoCheckResult]: Stem: 1851#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 1852#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 1864#L28 assume !!(main_~n~0#1 < 1000000); 1855#L29 assume main_~k~0#1 == main_~n~0#1; 1856#L29-1 main_~i~0#1 := 0; 1857#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1875#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 1879#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 1862#L36-3 assume !!(main_~k~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1863#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1872#L18-2 assume { :end_inline___VERIFIER_assert } true; 1869#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1870#L36-3 assume !(main_~k~0#1 < main_~n~0#1); 1889#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1880#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 1878#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 1860#L36-3 [2022-11-20 11:14:11,932 INFO L750 eck$LassoCheckResult]: Loop: 1860#L36-3 assume !!(main_~k~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1861#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1871#L18-2 assume { :end_inline___VERIFIER_assert } true; 1868#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1860#L36-3 [2022-11-20 11:14:11,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:11,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1604037446, now seen corresponding path program 1 times [2022-11-20 11:14:11,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:11,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495178038] [2022-11-20 11:14:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:11,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:11,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495178038] [2022-11-20 11:14:11,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495178038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:14:11,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987022257] [2022-11-20 11:14:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:11,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:11,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:11,998 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:14:12,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 11:14:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:12,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:14:12,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:12,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:14:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:12,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987022257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:14:12,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:14:12,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-11-20 11:14:12,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565674222] [2022-11-20 11:14:12,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:14:12,101 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 11:14:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:12,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2192714, now seen corresponding path program 2 times [2022-11-20 11:14:12,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:12,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414971998] [2022-11-20 11:14:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:12,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:12,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:14:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:14:12,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:14:12,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:12,195 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:14:12,195 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:14:12,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:14:12,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:14:12,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:14:12,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:12,196 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:14:12,196 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:14:12,196 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration7_Loop [2022-11-20 11:14:12,196 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:14:12,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:14:12,197 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:12,199 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:12,204 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:12,243 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:14:12,243 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:14:12,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:12,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:12,245 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:12,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 11:14:12,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:14:12,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:12,282 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:14:12,282 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:14:12,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:12,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:12,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:12,292 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:12,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:14:12,303 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:12,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 11:14:12,330 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:14:12,330 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:14:12,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:12,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:12,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:12,339 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:12,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:14:12,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:12,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-20 11:14:12,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:12,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:12,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:12,391 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:12,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:14:12,397 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:14:12,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-20 11:14:12,668 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:14:12,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:12,678 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:14:12,678 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:14:12,678 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:14:12,678 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:14:12,678 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:14:12,678 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:12,679 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:14:12,679 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:14:12,679 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration7_Loop [2022-11-20 11:14:12,679 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:14:12,679 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:14:12,680 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:12,685 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:12,693 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:14:12,727 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:14:12,727 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:14:12,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:12,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:12,729 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:12,734 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:14:12,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-20 11:14:12,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:14:12,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:14:12,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:14:12,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:14:12,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:14:12,747 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:14:12,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:14:12,757 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:14:12,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:12,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:12,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:12,767 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:12,771 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:14:12,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:14:12,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:14:12,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:14:12,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:14:12,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:14:12,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:14:12,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:14:12,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 11:14:12,790 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:14:12,792 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:14:12,793 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 11:14:12,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:14:12,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:12,796 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:12,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-20 11:14:12,797 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:14:12,797 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:14:12,797 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:14:12,797 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-11-20 11:14:12,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:12,801 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:14:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:12,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:14:12,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:12,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:14:12,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:12,888 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:14:12,888 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:12,928 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 135 states and 167 transitions. Complement of second has 7 states. [2022-11-20 11:14:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:14:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2022-11-20 11:14:12,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 16 letters. Loop has 4 letters. [2022-11-20 11:14:12,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:12,930 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:14:12,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:12,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:14:12,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:12,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:14:12,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:13,013 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:14:13,013 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:13,036 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 135 states and 167 transitions. Complement of second has 7 states. [2022-11-20 11:14:13,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:14:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2022-11-20 11:14:13,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 16 letters. Loop has 4 letters. [2022-11-20 11:14:13,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:13,039 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:14:13,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:13,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:14:13,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:13,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:14:13,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:13,117 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 11:14:13,117 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:13,147 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 111 states and 136 transitions. Complement of second has 6 states. [2022-11-20 11:14:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:14:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-11-20 11:14:13,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 4 letters. [2022-11-20 11:14:13,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:13,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 20 letters. Loop has 4 letters. [2022-11-20 11:14:13,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:13,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 8 letters. [2022-11-20 11:14:13,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:14:13,152 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 136 transitions. [2022-11-20 11:14:13,154 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:14:13,154 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 0 states and 0 transitions. [2022-11-20 11:14:13,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 11:14:13,155 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 11:14:13,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 11:14:13,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:13,155 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:14:13,155 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:14:13,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:13,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:13,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:13,157 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:13,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:13,157 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-20 11:14:13,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-20 11:14:13,158 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:14:13,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:14:13,158 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 11:14:13,158 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 11:14:13,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 11:14:13,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:14:13,158 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:14:13,159 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:14:13,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:14:13,160 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:14:13,160 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-20 11:14:13,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:14:13,160 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:14:13,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 11:14:13,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 11:14:13 BoogieIcfgContainer [2022-11-20 11:14:13,169 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 11:14:13,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:14:13,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:14:13,170 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:14:13,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:06" (3/4) ... [2022-11-20 11:14:13,174 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 11:14:13,174 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:14:13,175 INFO L158 Benchmark]: Toolchain (without parser) took 7718.16ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 128.7MB in the beginning and 126.5MB in the end (delta: 2.1MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2022-11-20 11:14:13,176 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:14:13,176 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.21ms. Allocated memory is still 159.4MB. Free memory was 128.7MB in the beginning and 118.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:14:13,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.17ms. Allocated memory is still 159.4MB. Free memory was 118.2MB in the beginning and 116.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:14:13,177 INFO L158 Benchmark]: Boogie Preprocessor took 21.50ms. Allocated memory is still 159.4MB. Free memory was 116.9MB in the beginning and 115.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:14:13,177 INFO L158 Benchmark]: RCFGBuilder took 320.80ms. Allocated memory is still 159.4MB. Free memory was 115.3MB in the beginning and 104.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:14:13,177 INFO L158 Benchmark]: BuchiAutomizer took 7102.76ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 104.8MB in the beginning and 126.5MB in the end (delta: -21.8MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2022-11-20 11:14:13,178 INFO L158 Benchmark]: Witness Printer took 4.57ms. Allocated memory is still 203.4MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:14:13,180 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 109.1MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.21ms. Allocated memory is still 159.4MB. Free memory was 128.7MB in the beginning and 118.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.17ms. Allocated memory is still 159.4MB. Free memory was 118.2MB in the beginning and 116.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.50ms. Allocated memory is still 159.4MB. Free memory was 116.9MB in the beginning and 115.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.80ms. Allocated memory is still 159.4MB. Free memory was 115.3MB in the beginning and 104.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 7102.76ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 104.8MB in the beginning and 126.5MB in the end (delta: -21.8MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. * Witness Printer took 4.57ms. Allocated memory is still 203.4MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * i + n and consists of 3 locations. One deterministic module has affine ranking function -1 * j + n and consists of 4 locations. One deterministic module has affine ranking function n + -1 * k and consists of 4 locations. One nondeterministic module has affine ranking function -1 * j + n and consists of 4 locations. One nondeterministic module has affine ranking function n + -1 * k and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.9s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 5.0s. Construction of modules took 0.2s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 7. Automata minimization 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 205 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 407 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 423 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 172 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 278 IncrementalHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 251 mSDtfsCounter, 278 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf109 neg99 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 88ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 11:14:13,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:13,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-11-20 11:14:13,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-20 11:14:13,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a38ce7cf-b81c-4ae7-9695-3a24b05229ae/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE