./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_22.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2aebec197cf7bd355d2eb5f718c983de149eae8f5ff2da107813d58a220d4744 --- 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-b5237d8 [2022-11-21 09:09:39,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:09:39,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:09:39,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:09:39,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:09:39,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:09:39,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:09:39,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:09:39,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:09:39,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:09:39,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:09:39,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:09:39,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:09:39,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:09:39,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:09:39,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:09:39,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:09:39,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:09:39,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:09:39,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:09:39,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:09:39,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:09:39,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:09:39,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:09:39,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:09:39,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:09:39,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:09:39,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:09:39,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:09:39,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:09:39,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:09:39,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:09:39,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:09:39,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:09:39,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:09:39,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:09:39,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:09:39,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:09:39,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:09:39,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:09:39,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:09:39,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-21 09:09:39,858 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:09:39,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:09:39,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:09:39,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:09:39,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:09:39,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:09:39,865 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:09:39,865 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 09:09:39,865 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 09:09:39,866 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 09:09:39,867 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 09:09:39,867 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 09:09:39,868 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 09:09:39,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:09:39,869 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:09:39,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:09:39,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:09:39,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 09:09:39,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 09:09:39,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 09:09:39,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:09:39,871 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 09:09:39,871 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:09:39,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 09:09:39,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:09:39,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:09:39,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:09:39,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:09:39,876 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 09:09:39,877 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_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aebec197cf7bd355d2eb5f718c983de149eae8f5ff2da107813d58a220d4744 [2022-11-21 09:09:40,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:09:40,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:09:40,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:09:40,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:09:40,275 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:09:40,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-restricted-15/NO_22.c [2022-11-21 09:09:43,933 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:09:44,240 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:09:44,240 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/sv-benchmarks/c/termination-restricted-15/NO_22.c [2022-11-21 09:09:44,248 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/data/0cbf04d06/fdce5d611030464e804591af2153e6c7/FLAGece16bd29 [2022-11-21 09:09:44,273 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/data/0cbf04d06/fdce5d611030464e804591af2153e6c7 [2022-11-21 09:09:44,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:09:44,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:09:44,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:09:44,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:09:44,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:09:44,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c807ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44, skipping insertion in model container [2022-11-21 09:09:44,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:09:44,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:09:44,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:09:44,499 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:09:44,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:09:44,524 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:09:44,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44 WrapperNode [2022-11-21 09:09:44,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:09:44,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:09:44,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:09:44,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:09:44,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,562 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2022-11-21 09:09:44,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:09:44,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:09:44,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:09:44,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:09:44,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,581 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:09:44,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:09:44,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:09:44,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:09:44,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (1/1) ... [2022-11-21 09:09:44,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:44,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:44,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:44,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 09:09:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:09:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:09:44,784 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:09:44,786 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:09:44,878 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:09:44,886 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:09:44,887 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 09:09:44,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:09:44 BoogieIcfgContainer [2022-11-21 09:09:44,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:09:44,891 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 09:09:44,891 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 09:09:44,896 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 09:09:44,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 09:09:44,898 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 09:09:44" (1/3) ... [2022-11-21 09:09:44,899 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3329f15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 09:09:44, skipping insertion in model container [2022-11-21 09:09:44,900 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 09:09:44,900 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:44" (2/3) ... [2022-11-21 09:09:44,900 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3329f15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 09:09:44, skipping insertion in model container [2022-11-21 09:09:44,901 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 09:09:44,901 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:09:44" (3/3) ... [2022-11-21 09:09:44,902 INFO L332 chiAutomizerObserver]: Analyzing ICFG NO_22.c [2022-11-21 09:09:44,974 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 09:09:44,974 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 09:09:44,974 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 09:09:44,974 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 09:09:44,975 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 09:09:44,975 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 09:09:44,975 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 09:09:44,975 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 09:09:44,981 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:45,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:09:45,004 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:09:45,004 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:09:45,011 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 09:09:45,011 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:09:45,011 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 09:09:45,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:45,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:09:45,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:09:45,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:09:45,014 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 09:09:45,014 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:09:45,024 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 3#L10-2true [2022-11-21 09:09:45,025 INFO L750 eck$LassoCheckResult]: Loop: 3#L10-2true assume !!(main_~i~0#1 < 100); 5#L10true assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 3#L10-2true [2022-11-21 09:09:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-21 09:09:45,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:45,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24519392] [2022-11-21 09:09:45,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:45,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:45,147 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:45,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-11-21 09:09:45,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:45,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596304465] [2022-11-21 09:09:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:45,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:45,216 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:45,222 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:45,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-21 09:09:45,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:45,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230824233] [2022-11-21 09:09:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:45,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:45,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:45,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230824233] [2022-11-21 09:09:45,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230824233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:45,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:09:45,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:09:45,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786264938] [2022-11-21 09:09:45,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:45,488 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:09:45,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:09:45,504 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:09:45,504 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:09:45,504 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 09:09:45,504 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:45,505 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:09:45,505 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:09:45,505 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration1_Loop [2022-11-21 09:09:45,505 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:09:45,506 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:09:45,542 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:45,592 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:45,598 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:45,681 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:09:45,682 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 09:09:45,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:45,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:45,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:45,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:09:45,706 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:45,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-21 09:09:45,746 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 09:09:45,746 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 09:09:45,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:45,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:45,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:45,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:45,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:09:45,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:45,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-21 09:09:45,815 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 09:09:45,816 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 09:09:45,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:45,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:45,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:45,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:45,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:09:45,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:45,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-21 09:09:45,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:45,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:45,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:45,882 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:45,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 09:09:45,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:45,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-21 09:09:45,927 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 09:09:45,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:45,942 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:09:45,942 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:09:45,942 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:09:45,942 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:09:45,942 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 09:09:45,942 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:45,942 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:09:45,942 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:09:45,943 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration1_Loop [2022-11-21 09:09:45,943 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:09:45,943 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:09:45,945 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:45,953 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:45,963 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:46,058 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:09:46,064 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 09:09:46,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:46,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:46,074 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:46,085 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 [2022-11-21 09:09:46,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-21 09:09:46,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:09:46,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:09:46,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:09:46,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:09:46,109 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 09:09:46,110 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 09:09:46,124 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 09:09:46,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:46,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:46,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:46,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:46,147 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 [2022-11-21 09:09:46,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-21 09:09:46,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:09:46,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:09:46,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:09:46,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:09:46,173 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 09:09:46,173 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 09:09:46,194 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 09:09:46,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:46,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:46,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:46,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:46,215 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 [2022-11-21 09:09:46,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-21 09:09:46,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:09:46,231 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:09:46,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:09:46,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:09:46,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:09:46,234 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:09:46,234 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:09:46,245 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 09:09:46,251 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 09:09:46,251 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 09:09:46,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:46,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:46,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:46,290 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 09:09:46,290 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 09:09:46,290 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 09:09:46,291 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-21 09:09:46,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-21 09:09:46,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:46,300 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 09:09:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:46,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:09:46,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:46,356 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:09:46,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:46,399 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-21 09:09:46,402 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:46,447 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 31 transitions. Complement of second has 6 states. [2022-11-21 09:09:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-21 09:09:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-11-21 09:09:46,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-21 09:09:46,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:46,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-21 09:09:46,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:46,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-21 09:09:46,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:46,462 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-11-21 09:09:46,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:09:46,468 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-11-21 09:09:46,470 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-21 09:09:46,470 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-11-21 09:09:46,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-11-21 09:09:46,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:09:46,472 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-21 09:09:46,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-11-21 09:09:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-21 09:09:46,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-11-21 09:09:46,504 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-21 09:09:46,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:46,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:09:46,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:09:46,510 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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) [2022-11-21 09:09:46,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:46,526 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2022-11-21 09:09:46,527 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2022-11-21 09:09:46,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:09:46,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 7 transitions. [2022-11-21 09:09:46,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-21 09:09:46,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-11-21 09:09:46,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2022-11-21 09:09:46,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:09:46,533 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2022-11-21 09:09:46,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2022-11-21 09:09:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-21 09:09:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2022-11-21 09:09:46,535 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2022-11-21 09:09:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:09:46,537 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2022-11-21 09:09:46,537 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-21 09:09:46,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2022-11-21 09:09:46,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:09:46,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:09:46,545 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:09:46,545 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-21 09:09:46,546 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:09:46,546 INFO L748 eck$LassoCheckResult]: Stem: 85#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 86#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 88#L10-2 assume !!(main_~i~0#1 < 100); 87#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 83#L10-2 [2022-11-21 09:09:46,546 INFO L750 eck$LassoCheckResult]: Loop: 83#L10-2 assume !!(main_~i~0#1 < 100); 84#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 83#L10-2 [2022-11-21 09:09:46,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:46,556 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-21 09:09:46,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:46,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041360764] [2022-11-21 09:09:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:46,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:46,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:46,578 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:46,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:46,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-11-21 09:09:46,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:46,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37042242] [2022-11-21 09:09:46,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:46,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:46,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:46,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-11-21 09:09:46,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:46,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734334117] [2022-11-21 09:09:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:46,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:46,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:46,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734334117] [2022-11-21 09:09:46,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734334117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:09:46,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225218878] [2022-11-21 09:09:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:46,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:46,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:46,655 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:46,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 09:09:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:46,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 09:09:46,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:46,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:46,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225218878] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:46,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:09:46,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-21 09:09:46,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838458912] [2022-11-21 09:09:46,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:46,799 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:09:46,800 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:09:46,800 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:09:46,800 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:09:46,800 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 09:09:46,800 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:46,801 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:09:46,801 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:09:46,801 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration2_Loop [2022-11-21 09:09:46,801 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:09:46,801 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:09:46,803 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:46,807 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:46,811 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:46,916 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:09:46,916 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 09:09:46,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:46,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:46,939 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:46,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:09:46,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:46,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-21 09:09:46,973 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 09:09:46,973 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 09:09:46,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:46,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:46,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:46,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:47,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:09:47,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:47,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-21 09:09:47,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 09:09:47,040 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 09:09:47,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:47,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:47,052 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:47,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:09:47,058 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:47,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-21 09:09:47,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:47,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:47,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:47,090 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:47,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-21 09:09:47,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 09:09:47,095 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:47,140 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 09:09:47,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:47,151 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:09:47,151 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:09:47,152 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:09:47,152 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:09:47,152 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 09:09:47,152 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:47,152 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:09:47,152 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:09:47,153 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration2_Loop [2022-11-21 09:09:47,153 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:09:47,153 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:09:47,155 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:47,160 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:47,171 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:47,227 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:09:47,227 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 09:09:47,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:47,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:47,229 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:47,250 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 [2022-11-21 09:09:47,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-21 09:09:47,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:09:47,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:09:47,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:09:47,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:09:47,269 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 09:09:47,269 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 09:09:47,282 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 09:09:47,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:47,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:47,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:47,288 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:47,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-21 09:09:47,295 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 09:09:47,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:09:47,308 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:09:47,308 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:09:47,308 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:09:47,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:09:47,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:09:47,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:09:47,315 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 09:09:47,320 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 09:09:47,320 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 09:09:47,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:47,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:47,323 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:47,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-21 09:09:47,325 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 09:09:47,326 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 09:09:47,326 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 09:09:47,326 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-21 09:09:47,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-11-21 09:09:47,333 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 09:09:47,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:47,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:09:47,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:47,390 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:09:47,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:47,397 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-21 09:09:47,399 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:47,418 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 13 transitions. Complement of second has 5 states. [2022-11-21 09:09:47,419 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 [2022-11-21 09:09:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-21 09:09:47,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-21 09:09:47,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:47,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-21 09:09:47,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:47,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 4 letters. [2022-11-21 09:09:47,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:47,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2022-11-21 09:09:47,425 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:09:47,427 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 13 transitions. [2022-11-21 09:09:47,428 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-11-21 09:09:47,428 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 09:09:47,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-11-21 09:09:47,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:09:47,428 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-11-21 09:09:47,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-11-21 09:09:47,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-21 09:09:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 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) [2022-11-21 09:09:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-11-21 09:09:47,432 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-11-21 09:09:47,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:09:47,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:09:47,434 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:47,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:47,468 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-21 09:09:47,468 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2022-11-21 09:09:47,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:09:47,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 13 transitions. [2022-11-21 09:09:47,474 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-21 09:09:47,475 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-11-21 09:09:47,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2022-11-21 09:09:47,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:09:47,476 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-21 09:09:47,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2022-11-21 09:09:47,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-21 09:09:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 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) [2022-11-21 09:09:47,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-21 09:09:47,483 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-21 09:09:47,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:09:47,486 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-21 09:09:47,487 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-21 09:09:47,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2022-11-21 09:09:47,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 09:09:47,490 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:09:47,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:09:47,491 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1] [2022-11-21 09:09:47,492 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:09:47,492 INFO L748 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 198#L10-2 assume !!(main_~i~0#1 < 100); 197#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 193#L10-2 assume !!(main_~i~0#1 < 100); 194#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 204#L10-2 assume !!(main_~i~0#1 < 100); 203#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 202#L10-2 assume !!(main_~i~0#1 < 100); 201#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 200#L10-2 [2022-11-21 09:09:47,493 INFO L750 eck$LassoCheckResult]: Loop: 200#L10-2 assume !!(main_~i~0#1 < 100); 199#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 200#L10-2 [2022-11-21 09:09:47,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:47,494 INFO L85 PathProgramCache]: Analyzing trace with hash 742492623, now seen corresponding path program 2 times [2022-11-21 09:09:47,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:47,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138030186] [2022-11-21 09:09:47,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:47,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:47,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:47,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:47,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:47,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2022-11-21 09:09:47,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:47,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060266192] [2022-11-21 09:09:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:47,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:47,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:47,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:47,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:47,558 INFO L85 PathProgramCache]: Analyzing trace with hash 570839924, now seen corresponding path program 2 times [2022-11-21 09:09:47,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:47,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744274225] [2022-11-21 09:09:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:47,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:47,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-11-21 09:09:47,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:47,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:47,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744274225] [2022-11-21 09:09:47,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744274225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:09:47,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045646436] [2022-11-21 09:09:47,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:09:47,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:47,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:47,817 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:47,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 09:09:47,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:09:47,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:09:47,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 09:09:47,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:47,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:47,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045646436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:47,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:09:47,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-21 09:09:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105725925] [2022-11-21 09:09:48,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:48,029 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:09:48,029 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:09:48,029 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:09:48,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:09:48,030 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 09:09:48,031 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:48,031 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:09:48,031 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:09:48,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration3_Loop [2022-11-21 09:09:48,031 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:09:48,032 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:09:48,035 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:48,044 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:48,049 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:48,112 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:09:48,113 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 09:09:48,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:48,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:48,114 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:48,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-21 09:09:48,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:09:48,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:48,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:48,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:48,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:48,145 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:48,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 09:09:48,160 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:48,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-21 09:09:48,199 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 09:09:48,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-11-21 09:09:48,209 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:09:48,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:09:48,209 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:09:48,210 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:09:48,210 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 09:09:48,210 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:48,210 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:09:48,210 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:09:48,210 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration3_Loop [2022-11-21 09:09:48,210 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:09:48,210 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:09:48,212 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:48,233 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:48,237 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:48,301 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:09:48,302 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 09:09:48,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:48,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:48,303 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:48,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-21 09:09:48,316 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 [2022-11-21 09:09:48,333 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:09:48,333 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:09:48,334 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:09:48,334 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:09:48,334 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:09:48,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:09:48,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:09:48,349 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 09:09:48,354 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 09:09:48,354 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 09:09:48,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:48,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:48,360 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:48,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-21 09:09:48,369 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 09:09:48,369 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 09:09:48,369 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 09:09:48,369 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-21 09:09:48,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:48,381 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 09:09:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:48,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:09:48,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:48,439 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:09:48,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:48,443 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-21 09:09:48,443 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:48,452 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 14 transitions. Complement of second has 5 states. [2022-11-21 09:09:48,453 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 [2022-11-21 09:09:48,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2022-11-21 09:09:48,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 10 letters. Loop has 2 letters. [2022-11-21 09:09:48,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:48,455 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 09:09:48,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:48,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:09:48,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:48,514 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:09:48,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:48,519 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-21 09:09:48,519 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:48,530 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 14 transitions. Complement of second has 5 states. [2022-11-21 09:09:48,531 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 [2022-11-21 09:09:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2022-11-21 09:09:48,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 10 letters. Loop has 2 letters. [2022-11-21 09:09:48,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:48,534 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 09:09:48,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:48,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:09:48,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:48,585 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:09:48,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:48,589 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 1 loop predicates [2022-11-21 09:09:48,590 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:48,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 19 transitions. Complement of second has 4 states. [2022-11-21 09:09:48,606 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 [2022-11-21 09:09:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:48,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-11-21 09:09:48,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2022-11-21 09:09:48,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:48,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 12 letters. Loop has 2 letters. [2022-11-21 09:09:48,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:48,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-21 09:09:48,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:48,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2022-11-21 09:09:48,613 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-21 09:09:48,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 16 transitions. [2022-11-21 09:09:48,614 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-21 09:09:48,614 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-11-21 09:09:48,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2022-11-21 09:09:48,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:09:48,615 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-21 09:09:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2022-11-21 09:09:48,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-21 09:09:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-11-21 09:09:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-21 09:09:48,617 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-21 09:09:48,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:48,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:09:48,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:09:48,618 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 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) [2022-11-21 09:09:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:48,696 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-11-21 09:09:48,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 34 transitions. [2022-11-21 09:09:48,699 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-21 09:09:48,699 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 28 transitions. [2022-11-21 09:09:48,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-11-21 09:09:48,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2022-11-21 09:09:48,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 28 transitions. [2022-11-21 09:09:48,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:09:48,701 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-21 09:09:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 28 transitions. [2022-11-21 09:09:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-21 09:09:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.08) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-11-21 09:09:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-11-21 09:09:48,705 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-21 09:09:48,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:09:48,706 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-21 09:09:48,706 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-21 09:09:48,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 27 transitions. [2022-11-21 09:09:48,707 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-21 09:09:48,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:09:48,707 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:09:48,708 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 1, 1] [2022-11-21 09:09:48,708 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:09:48,709 INFO L748 eck$LassoCheckResult]: Stem: 508#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 509#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 511#L10-2 assume !!(main_~i~0#1 < 100); 510#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 503#L10-2 assume !!(main_~i~0#1 < 100); 504#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 527#L10-2 assume !!(main_~i~0#1 < 100); 526#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 525#L10-2 assume !!(main_~i~0#1 < 100); 524#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 523#L10-2 assume !!(main_~i~0#1 < 100); 522#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 521#L10-2 assume !!(main_~i~0#1 < 100); 520#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 519#L10-2 assume !!(main_~i~0#1 < 100); 518#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 517#L10-2 assume !!(main_~i~0#1 < 100); 516#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 515#L10-2 assume !!(main_~i~0#1 < 100); 514#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 513#L10-2 assume !!(main_~i~0#1 < 100); 507#L10 [2022-11-21 09:09:48,709 INFO L750 eck$LassoCheckResult]: Loop: 507#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 512#L10-2 assume !!(main_~i~0#1 < 100); 507#L10 [2022-11-21 09:09:48,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:48,710 INFO L85 PathProgramCache]: Analyzing trace with hash -926509747, now seen corresponding path program 3 times [2022-11-21 09:09:48,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:48,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594552727] [2022-11-21 09:09:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:48,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:48,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:48,737 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:48,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:48,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2022-11-21 09:09:48,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:48,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276709392] [2022-11-21 09:09:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:48,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:48,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:48,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1317636150, now seen corresponding path program 4 times [2022-11-21 09:09:48,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:48,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366808744] [2022-11-21 09:09:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:48,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:48,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:48,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:48,847 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:09:48,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:09:48,847 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:09:48,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:09:48,847 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 09:09:48,847 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:48,848 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:09:48,848 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:09:48,848 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration4_Loop [2022-11-21 09:09:48,848 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:09:48,848 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:09:48,849 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:48,858 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:48,862 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:48,912 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:09:48,913 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 09:09:48,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:48,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:48,914 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:48,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:09:48,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:48,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-21 09:09:48,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-11-21 09:09:48,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:48,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:48,945 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:48,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-21 09:09:48,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 09:09:48,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:48,995 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 09:09:49,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:49,001 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:09:49,001 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:09:49,002 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:09:49,002 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:09:49,002 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 09:09:49,002 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:49,002 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:09:49,002 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:09:49,002 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration4_Loop [2022-11-21 09:09:49,002 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:09:49,002 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:09:49,004 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:49,020 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:49,024 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:49,073 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:09:49,073 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 09:09:49,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:49,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:49,076 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:49,085 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 [2022-11-21 09:09:49,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-21 09:09:49,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:09:49,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:09:49,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:09:49,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:09:49,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:09:49,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:09:49,102 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:09:49,119 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 09:09:49,122 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 09:09:49,122 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 09:09:49,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:49,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:49,127 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:49,135 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 09:09:49,135 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 09:09:49,136 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 09:09:49,136 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 99 Supporting invariants [] [2022-11-21 09:09:49,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-21 09:09:49,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:49,146 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 09:09:49,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:49,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:09:49,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:49,261 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:09:49,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:49,290 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 [2022-11-21 09:09:49,290 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 27 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:49,313 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 27 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 38 states and 42 transitions. Complement of second has 5 states. [2022-11-21 09:09:49,314 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 [2022-11-21 09:09:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-21 09:09:49,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 21 letters. Loop has 2 letters. [2022-11-21 09:09:49,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:49,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 23 letters. Loop has 2 letters. [2022-11-21 09:09:49,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:49,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 21 letters. Loop has 4 letters. [2022-11-21 09:09:49,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:49,321 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 42 transitions. [2022-11-21 09:09:49,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-21 09:09:49,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 28 states and 31 transitions. [2022-11-21 09:09:49,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-21 09:09:49,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-11-21 09:09:49,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 31 transitions. [2022-11-21 09:09:49,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:09:49,328 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-21 09:09:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 31 transitions. [2022-11-21 09:09:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-21 09:09:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 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) [2022-11-21 09:09:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-11-21 09:09:49,334 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-11-21 09:09:49,334 INFO L428 stractBuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-11-21 09:09:49,334 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-21 09:09:49,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2022-11-21 09:09:49,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-21 09:09:49,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:09:49,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:09:49,340 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 1, 1, 1] [2022-11-21 09:09:49,340 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 09:09:49,341 INFO L748 eck$LassoCheckResult]: Stem: 660#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 661#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 665#L10-2 assume !!(main_~i~0#1 < 100); 662#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 663#L10-2 assume !!(main_~i~0#1 < 100); 664#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 658#L10-2 assume !!(main_~i~0#1 < 100); 659#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 681#L10-2 assume !!(main_~i~0#1 < 100); 680#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 679#L10-2 assume !!(main_~i~0#1 < 100); 678#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 677#L10-2 assume !!(main_~i~0#1 < 100); 676#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 675#L10-2 assume !!(main_~i~0#1 < 100); 674#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 673#L10-2 assume !!(main_~i~0#1 < 100); 672#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 671#L10-2 assume !!(main_~i~0#1 < 100); 670#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 669#L10-2 assume !!(main_~i~0#1 < 100); 668#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 667#L10-2 assume !!(main_~i~0#1 < 100); 656#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 666#L10-2 assume !!(main_~i~0#1 < 100); 657#L10 [2022-11-21 09:09:49,341 INFO L750 eck$LassoCheckResult]: Loop: 657#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 655#L10-2 assume !!(main_~i~0#1 < 100); 657#L10 [2022-11-21 09:09:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:49,342 INFO L85 PathProgramCache]: Analyzing trace with hash 767012677, now seen corresponding path program 3 times [2022-11-21 09:09:49,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:49,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295857155] [2022-11-21 09:09:49,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:49,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:49,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:49,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:49,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:49,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295857155] [2022-11-21 09:09:49,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295857155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:09:49,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938233178] [2022-11-21 09:09:49,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 09:09:49,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:49,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:49,745 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:49,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-21 09:09:49,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-21 09:09:49,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:09:49,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 09:09:49,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:49,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:50,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938233178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:50,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:09:50,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-11-21 09:09:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884567623] [2022-11-21 09:09:50,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:50,232 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 09:09:50,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2022-11-21 09:09:50,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:50,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383053094] [2022-11-21 09:09:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:50,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:50,240 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:50,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:50,270 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:09:50,270 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:09:50,271 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:09:50,271 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:09:50,271 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 09:09:50,271 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:50,271 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:09:50,271 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:09:50,272 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration5_Loop [2022-11-21 09:09:50,272 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:09:50,272 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:09:50,276 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:50,283 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:50,287 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:50,331 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:09:50,332 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 09:09:50,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:50,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:50,333 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:50,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-21 09:09:50,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 09:09:50,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:50,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:50,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:50,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:50,379 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:50,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 09:09:50,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 09:09:50,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-21 09:09:50,427 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 09:09:50,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:50,432 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 09:09:50,433 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 09:09:50,433 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 09:09:50,433 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 09:09:50,433 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 09:09:50,433 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:50,433 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 09:09:50,433 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 09:09:50,433 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration5_Loop [2022-11-21 09:09:50,434 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 09:09:50,434 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 09:09:50,435 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:50,445 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:50,449 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 09:09:50,503 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 09:09:50,504 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 09:09:50,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:50,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:50,508 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:50,516 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 [2022-11-21 09:09:50,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-21 09:09:50,532 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 09:09:50,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 09:09:50,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 09:09:50,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 09:09:50,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 09:09:50,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 09:09:50,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 09:09:50,555 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 09:09:50,560 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 09:09:50,560 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 09:09:50,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 09:09:50,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:50,562 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:50,569 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 09:09:50,569 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 09:09:50,569 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 09:09:50,569 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 99 Supporting invariants [] [2022-11-21 09:09:50,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-21 09:09:50,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:50,580 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 09:09:50,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:50,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:09:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:50,670 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:09:50,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:50,699 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 [2022-11-21 09:09:50,699 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5 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) [2022-11-21 09:09:50,715 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5. 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 38 states and 42 transitions. Complement of second has 5 states. [2022-11-21 09:09:50,716 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 [2022-11-21 09:09:50,717 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) [2022-11-21 09:09:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-21 09:09:50,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 25 letters. Loop has 2 letters. [2022-11-21 09:09:50,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:50,719 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 09:09:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:50,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:09:50,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:50,801 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:09:50,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:50,826 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 [2022-11-21 09:09:50,826 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5 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) [2022-11-21 09:09:50,846 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5. 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 39 states and 43 transitions. Complement of second has 5 states. [2022-11-21 09:09:50,847 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 [2022-11-21 09:09:50,848 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) [2022-11-21 09:09:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2022-11-21 09:09:50,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 25 letters. Loop has 2 letters. [2022-11-21 09:09:50,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:50,849 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 09:09:50,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:50,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:09:50,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:50,936 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:09:50,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:50,959 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 [2022-11-21 09:09:50,959 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5 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) [2022-11-21 09:09:50,979 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5. 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 40 states and 45 transitions. Complement of second has 4 states. [2022-11-21 09:09:50,979 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 [2022-11-21 09:09:50,980 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) [2022-11-21 09:09:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-11-21 09:09:50,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 25 letters. Loop has 2 letters. [2022-11-21 09:09:50,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:50,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 27 letters. Loop has 2 letters. [2022-11-21 09:09:50,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:50,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 25 letters. Loop has 4 letters. [2022-11-21 09:09:50,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 09:09:50,983 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 45 transitions. [2022-11-21 09:09:50,984 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-21 09:09:50,985 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 29 states and 32 transitions. [2022-11-21 09:09:50,985 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-21 09:09:50,985 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-11-21 09:09:50,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 32 transitions. [2022-11-21 09:09:50,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:09:50,986 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-21 09:09:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 32 transitions. [2022-11-21 09:09:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-11-21 09:09:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 25 states have internal predecessors, (28), 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) [2022-11-21 09:09:50,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-21 09:09:50,989 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-21 09:09:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 09:09:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-21 09:09:50,990 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 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) [2022-11-21 09:09:51,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:51,084 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2022-11-21 09:09:51,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 65 transitions. [2022-11-21 09:09:51,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 09:09:51,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 51 states and 53 transitions. [2022-11-21 09:09:51,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-21 09:09:51,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-11-21 09:09:51,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 53 transitions. [2022-11-21 09:09:51,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:09:51,088 INFO L218 hiAutomatonCegarLoop]: Abstraction has 51 states and 53 transitions. [2022-11-21 09:09:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 53 transitions. [2022-11-21 09:09:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-11-21 09:09:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 50 states have (on average 1.04) internal successors, (52), 49 states have internal predecessors, (52), 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) [2022-11-21 09:09:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2022-11-21 09:09:51,092 INFO L240 hiAutomatonCegarLoop]: Abstraction has 50 states and 52 transitions. [2022-11-21 09:09:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 09:09:51,093 INFO L428 stractBuchiCegarLoop]: Abstraction has 50 states and 52 transitions. [2022-11-21 09:09:51,093 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-21 09:09:51,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 52 transitions. [2022-11-21 09:09:51,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 09:09:51,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:09:51,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:09:51,102 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [24, 22, 1, 1, 1] [2022-11-21 09:09:51,105 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2022-11-21 09:09:51,105 INFO L748 eck$LassoCheckResult]: Stem: 1328#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1329#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 1324#L10-2 assume !!(main_~i~0#1 < 100); 1325#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1330#L10-2 assume !!(main_~i~0#1 < 100); 1331#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1326#L10-2 assume !!(main_~i~0#1 < 100); 1327#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1373#L10-2 assume !!(main_~i~0#1 < 100); 1372#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1371#L10-2 assume !!(main_~i~0#1 < 100); 1370#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1369#L10-2 assume !!(main_~i~0#1 < 100); 1368#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1367#L10-2 assume !!(main_~i~0#1 < 100); 1366#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1365#L10-2 assume !!(main_~i~0#1 < 100); 1364#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1363#L10-2 assume !!(main_~i~0#1 < 100); 1362#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1361#L10-2 assume !!(main_~i~0#1 < 100); 1360#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1359#L10-2 assume !!(main_~i~0#1 < 100); 1358#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1357#L10-2 assume !!(main_~i~0#1 < 100); 1356#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1355#L10-2 assume !!(main_~i~0#1 < 100); 1354#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1353#L10-2 assume !!(main_~i~0#1 < 100); 1352#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1351#L10-2 assume !!(main_~i~0#1 < 100); 1350#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1349#L10-2 assume !!(main_~i~0#1 < 100); 1348#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1347#L10-2 assume !!(main_~i~0#1 < 100); 1346#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1345#L10-2 assume !!(main_~i~0#1 < 100); 1344#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1343#L10-2 assume !!(main_~i~0#1 < 100); 1342#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1341#L10-2 assume !!(main_~i~0#1 < 100); 1340#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1339#L10-2 assume !!(main_~i~0#1 < 100); 1338#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1337#L10-2 assume !!(main_~i~0#1 < 100); 1336#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1335#L10-2 assume !!(main_~i~0#1 < 100); 1333#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 1332#L10-2 assume !!(main_~i~0#1 < 100); 1334#L10 [2022-11-21 09:09:51,106 INFO L750 eck$LassoCheckResult]: Loop: 1334#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1335#L10-2 assume !!(main_~i~0#1 < 100); 1333#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 1332#L10-2 assume !!(main_~i~0#1 < 100); 1334#L10 [2022-11-21 09:09:51,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:51,106 INFO L85 PathProgramCache]: Analyzing trace with hash -694298463, now seen corresponding path program 4 times [2022-11-21 09:09:51,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:51,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007082308] [2022-11-21 09:09:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-11-21 09:09:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:51,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007082308] [2022-11-21 09:09:51,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007082308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:09:51,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716706033] [2022-11-21 09:09:51,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 09:09:51,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:51,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:51,788 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:51,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-21 09:09:51,845 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 09:09:51,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:09:51,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 09:09:51,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:51,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:53,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716706033] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:53,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:09:53,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2022-11-21 09:09:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677606803] [2022-11-21 09:09:53,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:53,048 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 09:09:53,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 1 times [2022-11-21 09:09:53,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:53,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235825585] [2022-11-21 09:09:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:53,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:53,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:53,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:53,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:53,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-21 09:09:53,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-21 09:09:53,099 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. cyclomatic complexity: 3 Second operand has 48 states, 48 states have (on average 2.0) internal successors, (96), 48 states have internal predecessors, (96), 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) [2022-11-21 09:09:53,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:53,353 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2022-11-21 09:09:53,353 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 125 transitions. [2022-11-21 09:09:53,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 09:09:53,369 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 99 states and 101 transitions. [2022-11-21 09:09:53,369 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-21 09:09:53,369 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-11-21 09:09:53,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 101 transitions. [2022-11-21 09:09:53,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:09:53,370 INFO L218 hiAutomatonCegarLoop]: Abstraction has 99 states and 101 transitions. [2022-11-21 09:09:53,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 101 transitions. [2022-11-21 09:09:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2022-11-21 09:09:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 97 states have internal predecessors, (100), 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) [2022-11-21 09:09:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2022-11-21 09:09:53,375 INFO L240 hiAutomatonCegarLoop]: Abstraction has 98 states and 100 transitions. [2022-11-21 09:09:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-21 09:09:53,376 INFO L428 stractBuchiCegarLoop]: Abstraction has 98 states and 100 transitions. [2022-11-21 09:09:53,377 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-21 09:09:53,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 100 transitions. [2022-11-21 09:09:53,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 09:09:53,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:09:53,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:09:53,381 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [48, 46, 1, 1, 1] [2022-11-21 09:09:53,394 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2022-11-21 09:09:53,395 INFO L748 eck$LassoCheckResult]: Stem: 1840#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1841#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 1836#L10-2 assume !!(main_~i~0#1 < 100); 1837#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1842#L10-2 assume !!(main_~i~0#1 < 100); 1843#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1838#L10-2 assume !!(main_~i~0#1 < 100); 1839#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1933#L10-2 assume !!(main_~i~0#1 < 100); 1932#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1931#L10-2 assume !!(main_~i~0#1 < 100); 1930#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1929#L10-2 assume !!(main_~i~0#1 < 100); 1928#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1927#L10-2 assume !!(main_~i~0#1 < 100); 1926#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1925#L10-2 assume !!(main_~i~0#1 < 100); 1924#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1923#L10-2 assume !!(main_~i~0#1 < 100); 1922#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1921#L10-2 assume !!(main_~i~0#1 < 100); 1920#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1919#L10-2 assume !!(main_~i~0#1 < 100); 1918#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1917#L10-2 assume !!(main_~i~0#1 < 100); 1916#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1915#L10-2 assume !!(main_~i~0#1 < 100); 1914#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1913#L10-2 assume !!(main_~i~0#1 < 100); 1912#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1911#L10-2 assume !!(main_~i~0#1 < 100); 1910#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1909#L10-2 assume !!(main_~i~0#1 < 100); 1908#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1907#L10-2 assume !!(main_~i~0#1 < 100); 1906#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1905#L10-2 assume !!(main_~i~0#1 < 100); 1904#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1903#L10-2 assume !!(main_~i~0#1 < 100); 1902#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1901#L10-2 assume !!(main_~i~0#1 < 100); 1900#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1899#L10-2 assume !!(main_~i~0#1 < 100); 1898#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1897#L10-2 assume !!(main_~i~0#1 < 100); 1896#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1895#L10-2 assume !!(main_~i~0#1 < 100); 1894#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1893#L10-2 assume !!(main_~i~0#1 < 100); 1892#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1891#L10-2 assume !!(main_~i~0#1 < 100); 1890#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1889#L10-2 assume !!(main_~i~0#1 < 100); 1888#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1887#L10-2 assume !!(main_~i~0#1 < 100); 1886#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1885#L10-2 assume !!(main_~i~0#1 < 100); 1884#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1883#L10-2 assume !!(main_~i~0#1 < 100); 1882#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1881#L10-2 assume !!(main_~i~0#1 < 100); 1880#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1879#L10-2 assume !!(main_~i~0#1 < 100); 1878#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1877#L10-2 assume !!(main_~i~0#1 < 100); 1876#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1875#L10-2 assume !!(main_~i~0#1 < 100); 1874#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1873#L10-2 assume !!(main_~i~0#1 < 100); 1872#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1871#L10-2 assume !!(main_~i~0#1 < 100); 1870#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1869#L10-2 assume !!(main_~i~0#1 < 100); 1868#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1867#L10-2 assume !!(main_~i~0#1 < 100); 1866#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1865#L10-2 assume !!(main_~i~0#1 < 100); 1864#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1863#L10-2 assume !!(main_~i~0#1 < 100); 1862#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1861#L10-2 assume !!(main_~i~0#1 < 100); 1860#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1859#L10-2 assume !!(main_~i~0#1 < 100); 1858#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1857#L10-2 assume !!(main_~i~0#1 < 100); 1856#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1855#L10-2 assume !!(main_~i~0#1 < 100); 1854#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1853#L10-2 assume !!(main_~i~0#1 < 100); 1852#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1851#L10-2 assume !!(main_~i~0#1 < 100); 1850#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1849#L10-2 assume !!(main_~i~0#1 < 100); 1848#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1847#L10-2 assume !!(main_~i~0#1 < 100); 1845#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 1844#L10-2 assume !!(main_~i~0#1 < 100); 1846#L10 [2022-11-21 09:09:53,395 INFO L750 eck$LassoCheckResult]: Loop: 1846#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1847#L10-2 assume !!(main_~i~0#1 < 100); 1845#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 1844#L10-2 assume !!(main_~i~0#1 < 100); 1846#L10 [2022-11-21 09:09:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash -818401447, now seen corresponding path program 5 times [2022-11-21 09:09:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:53,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686301031] [2022-11-21 09:09:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:53,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:55,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:55,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686301031] [2022-11-21 09:09:55,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686301031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:09:55,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857910341] [2022-11-21 09:09:55,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 09:09:55,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:55,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:55,640 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:55,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-21 09:09:55,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2022-11-21 09:09:55,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:09:55,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-21 09:09:55,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:56,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:57,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857910341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:57,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:09:57,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2022-11-21 09:09:57,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931051624] [2022-11-21 09:09:57,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:57,751 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 09:09:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 2 times [2022-11-21 09:09:57,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:57,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853848627] [2022-11-21 09:09:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:57,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:57,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:57,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:57,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-21 09:09:57,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2022-11-21 09:09:57,798 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. cyclomatic complexity: 3 Second operand has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 52 states have internal predecessors, (105), 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) [2022-11-21 09:09:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:58,011 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2022-11-21 09:09:58,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 113 transitions. [2022-11-21 09:09:58,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 09:09:58,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 107 states and 109 transitions. [2022-11-21 09:09:58,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-21 09:09:58,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-11-21 09:09:58,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 109 transitions. [2022-11-21 09:09:58,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 09:09:58,015 INFO L218 hiAutomatonCegarLoop]: Abstraction has 107 states and 109 transitions. [2022-11-21 09:09:58,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 109 transitions. [2022-11-21 09:09:58,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2022-11-21 09:09:58,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 105 states have internal predecessors, (108), 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) [2022-11-21 09:09:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2022-11-21 09:09:58,023 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 108 transitions. [2022-11-21 09:09:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-21 09:09:58,024 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 108 transitions. [2022-11-21 09:09:58,024 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-21 09:09:58,024 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 108 transitions. [2022-11-21 09:09:58,025 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 09:09:58,025 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 09:09:58,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 09:09:58,028 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [52, 50, 1, 1, 1] [2022-11-21 09:09:58,029 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2022-11-21 09:09:58,029 INFO L748 eck$LassoCheckResult]: Stem: 2680#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2681#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 2676#L10-2 assume !!(main_~i~0#1 < 100); 2677#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2682#L10-2 assume !!(main_~i~0#1 < 100); 2683#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2678#L10-2 assume !!(main_~i~0#1 < 100); 2679#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2781#L10-2 assume !!(main_~i~0#1 < 100); 2780#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2779#L10-2 assume !!(main_~i~0#1 < 100); 2778#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2777#L10-2 assume !!(main_~i~0#1 < 100); 2776#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2775#L10-2 assume !!(main_~i~0#1 < 100); 2774#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2773#L10-2 assume !!(main_~i~0#1 < 100); 2772#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2771#L10-2 assume !!(main_~i~0#1 < 100); 2770#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2769#L10-2 assume !!(main_~i~0#1 < 100); 2768#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2767#L10-2 assume !!(main_~i~0#1 < 100); 2766#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2765#L10-2 assume !!(main_~i~0#1 < 100); 2764#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2763#L10-2 assume !!(main_~i~0#1 < 100); 2762#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2761#L10-2 assume !!(main_~i~0#1 < 100); 2760#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2759#L10-2 assume !!(main_~i~0#1 < 100); 2758#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2757#L10-2 assume !!(main_~i~0#1 < 100); 2756#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2755#L10-2 assume !!(main_~i~0#1 < 100); 2754#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2753#L10-2 assume !!(main_~i~0#1 < 100); 2752#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2751#L10-2 assume !!(main_~i~0#1 < 100); 2750#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2749#L10-2 assume !!(main_~i~0#1 < 100); 2748#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2747#L10-2 assume !!(main_~i~0#1 < 100); 2746#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2745#L10-2 assume !!(main_~i~0#1 < 100); 2744#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2743#L10-2 assume !!(main_~i~0#1 < 100); 2742#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2741#L10-2 assume !!(main_~i~0#1 < 100); 2740#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2739#L10-2 assume !!(main_~i~0#1 < 100); 2738#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2737#L10-2 assume !!(main_~i~0#1 < 100); 2736#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2735#L10-2 assume !!(main_~i~0#1 < 100); 2734#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2733#L10-2 assume !!(main_~i~0#1 < 100); 2732#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2731#L10-2 assume !!(main_~i~0#1 < 100); 2730#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2729#L10-2 assume !!(main_~i~0#1 < 100); 2728#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2727#L10-2 assume !!(main_~i~0#1 < 100); 2726#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2725#L10-2 assume !!(main_~i~0#1 < 100); 2724#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2723#L10-2 assume !!(main_~i~0#1 < 100); 2722#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2721#L10-2 assume !!(main_~i~0#1 < 100); 2720#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2719#L10-2 assume !!(main_~i~0#1 < 100); 2718#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2717#L10-2 assume !!(main_~i~0#1 < 100); 2716#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2715#L10-2 assume !!(main_~i~0#1 < 100); 2714#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2713#L10-2 assume !!(main_~i~0#1 < 100); 2712#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2711#L10-2 assume !!(main_~i~0#1 < 100); 2710#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2709#L10-2 assume !!(main_~i~0#1 < 100); 2708#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2707#L10-2 assume !!(main_~i~0#1 < 100); 2706#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2705#L10-2 assume !!(main_~i~0#1 < 100); 2704#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2703#L10-2 assume !!(main_~i~0#1 < 100); 2702#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2701#L10-2 assume !!(main_~i~0#1 < 100); 2700#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2699#L10-2 assume !!(main_~i~0#1 < 100); 2698#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2697#L10-2 assume !!(main_~i~0#1 < 100); 2696#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2695#L10-2 assume !!(main_~i~0#1 < 100); 2694#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2693#L10-2 assume !!(main_~i~0#1 < 100); 2692#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2691#L10-2 assume !!(main_~i~0#1 < 100); 2690#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2689#L10-2 assume !!(main_~i~0#1 < 100); 2688#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2687#L10-2 assume !!(main_~i~0#1 < 100); 2685#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 2684#L10-2 assume !!(main_~i~0#1 < 100); 2686#L10 [2022-11-21 09:09:58,029 INFO L750 eck$LassoCheckResult]: Loop: 2686#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2687#L10-2 assume !!(main_~i~0#1 < 100); 2685#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 2684#L10-2 assume !!(main_~i~0#1 < 100); 2686#L10 [2022-11-21 09:09:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1468745677, now seen corresponding path program 6 times [2022-11-21 09:09:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:58,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506572093] [2022-11-21 09:09:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:58,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:58,060 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:58,085 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:58,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 3 times [2022-11-21 09:09:58,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:58,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687432198] [2022-11-21 09:09:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:58,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:58,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:58,092 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:58,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1914756667, now seen corresponding path program 7 times [2022-11-21 09:09:58,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:58,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089778169] [2022-11-21 09:09:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:58,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:58,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:58,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:09:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:59,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:09:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:09:59,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 09:09:59 BoogieIcfgContainer [2022-11-21 09:09:59,959 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-21 09:09:59,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 09:09:59,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 09:09:59,960 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 09:09:59,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:09:44" (3/4) ... [2022-11-21 09:09:59,964 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-21 09:10:00,026 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 09:10:00,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 09:10:00,027 INFO L158 Benchmark]: Toolchain (without parser) took 15743.37ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 122.6MB in the beginning and 72.4MB in the end (delta: 50.2MB). Peak memory consumption was 81.2MB. Max. memory is 16.1GB. [2022-11-21 09:10:00,028 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory was 76.5MB in the beginning and 76.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:10:00,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.01ms. Allocated memory is still 153.1MB. Free memory was 122.6MB in the beginning and 113.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 09:10:00,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.90ms. Allocated memory is still 153.1MB. Free memory was 113.6MB in the beginning and 112.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:10:00,029 INFO L158 Benchmark]: Boogie Preprocessor took 20.11ms. Allocated memory is still 153.1MB. Free memory was 112.1MB in the beginning and 110.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:10:00,029 INFO L158 Benchmark]: RCFGBuilder took 305.62ms. Allocated memory is still 153.1MB. Free memory was 110.9MB in the beginning and 103.1MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 09:10:00,030 INFO L158 Benchmark]: BuchiAutomizer took 15068.18ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 103.1MB in the beginning and 75.5MB in the end (delta: 27.6MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2022-11-21 09:10:00,030 INFO L158 Benchmark]: Witness Printer took 66.74ms. Allocated memory is still 184.5MB. Free memory was 75.5MB in the beginning and 72.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 09:10:00,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory was 76.5MB in the beginning and 76.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.01ms. Allocated memory is still 153.1MB. Free memory was 122.6MB in the beginning and 113.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.90ms. Allocated memory is still 153.1MB. Free memory was 113.6MB in the beginning and 112.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.11ms. Allocated memory is still 153.1MB. Free memory was 112.1MB in the beginning and 110.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 305.62ms. Allocated memory is still 153.1MB. Free memory was 110.9MB in the beginning and 103.1MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 15068.18ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 103.1MB in the beginning and 75.5MB in the end (delta: 27.6MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. * Witness Printer took 66.74ms. Allocated memory is still 184.5MB. Free memory was 75.5MB in the beginning and 72.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 11 terminating modules (6 trivial, 3 deterministic, 2 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 99 and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 99 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 52 locations. The remainder module has 106 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.9s and 8 iterations. TraceHistogramMax:52. Analysis of lassos took 12.9s. Construction of modules took 0.4s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 9. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 7 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, 48 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 350 IncrementalHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 54 mSDtfsCounter, 350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN2 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax199 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq149 hnf94 smp100 dnf100 smp100 tf111 neg97 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 59ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = 0 VAL [i=0] [L9] COND TRUE i < 100 VAL [i=0] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=1] [L9] COND TRUE i < 100 VAL [i=1] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=2] [L9] COND TRUE i < 100 VAL [i=2] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=3] [L9] COND TRUE i < 100 VAL [i=3] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=4] [L9] COND TRUE i < 100 VAL [i=4] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=5] [L9] COND TRUE i < 100 VAL [i=5] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=6] [L9] COND TRUE i < 100 VAL [i=6] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=7] [L9] COND TRUE i < 100 VAL [i=7] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=8] [L9] COND TRUE i < 100 VAL [i=8] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=9] [L9] COND TRUE i < 100 VAL [i=9] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=10] [L9] COND TRUE i < 100 VAL [i=10] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=11] [L9] COND TRUE i < 100 VAL [i=11] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=12] [L9] COND TRUE i < 100 VAL [i=12] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=13] [L9] COND TRUE i < 100 VAL [i=13] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=14] [L9] COND TRUE i < 100 VAL [i=14] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=15] [L9] COND TRUE i < 100 VAL [i=15] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=16] [L9] COND TRUE i < 100 VAL [i=16] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=17] [L9] COND TRUE i < 100 VAL [i=17] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=18] [L9] COND TRUE i < 100 VAL [i=18] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=19] [L9] COND TRUE i < 100 VAL [i=19] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=20] [L9] COND TRUE i < 100 VAL [i=20] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=21] [L9] COND TRUE i < 100 VAL [i=21] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=22] [L9] COND TRUE i < 100 VAL [i=22] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=23] [L9] COND TRUE i < 100 VAL [i=23] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=24] [L9] COND TRUE i < 100 VAL [i=24] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=25] [L9] COND TRUE i < 100 VAL [i=25] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=26] [L9] COND TRUE i < 100 VAL [i=26] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=27] [L9] COND TRUE i < 100 VAL [i=27] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=28] [L9] COND TRUE i < 100 VAL [i=28] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=29] [L9] COND TRUE i < 100 VAL [i=29] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=30] [L9] COND TRUE i < 100 VAL [i=30] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=31] [L9] COND TRUE i < 100 VAL [i=31] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=32] [L9] COND TRUE i < 100 VAL [i=32] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=33] [L9] COND TRUE i < 100 VAL [i=33] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=34] [L9] COND TRUE i < 100 VAL [i=34] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=35] [L9] COND TRUE i < 100 VAL [i=35] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=36] [L9] COND TRUE i < 100 VAL [i=36] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=37] [L9] COND TRUE i < 100 VAL [i=37] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=38] [L9] COND TRUE i < 100 VAL [i=38] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=39] [L9] COND TRUE i < 100 VAL [i=39] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=40] [L9] COND TRUE i < 100 VAL [i=40] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=41] [L9] COND TRUE i < 100 VAL [i=41] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=42] [L9] COND TRUE i < 100 VAL [i=42] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=43] [L9] COND TRUE i < 100 VAL [i=43] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=44] [L9] COND TRUE i < 100 VAL [i=44] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=45] [L9] COND TRUE i < 100 VAL [i=45] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=46] [L9] COND TRUE i < 100 VAL [i=46] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=47] [L9] COND TRUE i < 100 VAL [i=47] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=48] [L9] COND TRUE i < 100 VAL [i=48] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=49] [L9] COND TRUE i < 100 VAL [i=49] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=50] [L9] COND TRUE i < 100 VAL [i=50] [L10] COND FALSE !(i < 50) [L11] i = i-1 VAL [i=49] [L9] COND TRUE i < 100 VAL [i=49] Loop: [L10] COND TRUE i < 50 [L10] i = i+1 [L9] COND TRUE i < 100 [L10] COND FALSE !(i < 50) [L11] i = i-1 [L9] COND TRUE i < 100 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = 0 VAL [i=0] [L9] COND TRUE i < 100 VAL [i=0] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=1] [L9] COND TRUE i < 100 VAL [i=1] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=2] [L9] COND TRUE i < 100 VAL [i=2] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=3] [L9] COND TRUE i < 100 VAL [i=3] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=4] [L9] COND TRUE i < 100 VAL [i=4] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=5] [L9] COND TRUE i < 100 VAL [i=5] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=6] [L9] COND TRUE i < 100 VAL [i=6] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=7] [L9] COND TRUE i < 100 VAL [i=7] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=8] [L9] COND TRUE i < 100 VAL [i=8] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=9] [L9] COND TRUE i < 100 VAL [i=9] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=10] [L9] COND TRUE i < 100 VAL [i=10] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=11] [L9] COND TRUE i < 100 VAL [i=11] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=12] [L9] COND TRUE i < 100 VAL [i=12] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=13] [L9] COND TRUE i < 100 VAL [i=13] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=14] [L9] COND TRUE i < 100 VAL [i=14] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=15] [L9] COND TRUE i < 100 VAL [i=15] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=16] [L9] COND TRUE i < 100 VAL [i=16] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=17] [L9] COND TRUE i < 100 VAL [i=17] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=18] [L9] COND TRUE i < 100 VAL [i=18] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=19] [L9] COND TRUE i < 100 VAL [i=19] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=20] [L9] COND TRUE i < 100 VAL [i=20] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=21] [L9] COND TRUE i < 100 VAL [i=21] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=22] [L9] COND TRUE i < 100 VAL [i=22] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=23] [L9] COND TRUE i < 100 VAL [i=23] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=24] [L9] COND TRUE i < 100 VAL [i=24] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=25] [L9] COND TRUE i < 100 VAL [i=25] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=26] [L9] COND TRUE i < 100 VAL [i=26] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=27] [L9] COND TRUE i < 100 VAL [i=27] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=28] [L9] COND TRUE i < 100 VAL [i=28] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=29] [L9] COND TRUE i < 100 VAL [i=29] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=30] [L9] COND TRUE i < 100 VAL [i=30] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=31] [L9] COND TRUE i < 100 VAL [i=31] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=32] [L9] COND TRUE i < 100 VAL [i=32] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=33] [L9] COND TRUE i < 100 VAL [i=33] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=34] [L9] COND TRUE i < 100 VAL [i=34] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=35] [L9] COND TRUE i < 100 VAL [i=35] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=36] [L9] COND TRUE i < 100 VAL [i=36] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=37] [L9] COND TRUE i < 100 VAL [i=37] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=38] [L9] COND TRUE i < 100 VAL [i=38] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=39] [L9] COND TRUE i < 100 VAL [i=39] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=40] [L9] COND TRUE i < 100 VAL [i=40] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=41] [L9] COND TRUE i < 100 VAL [i=41] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=42] [L9] COND TRUE i < 100 VAL [i=42] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=43] [L9] COND TRUE i < 100 VAL [i=43] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=44] [L9] COND TRUE i < 100 VAL [i=44] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=45] [L9] COND TRUE i < 100 VAL [i=45] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=46] [L9] COND TRUE i < 100 VAL [i=46] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=47] [L9] COND TRUE i < 100 VAL [i=47] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=48] [L9] COND TRUE i < 100 VAL [i=48] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=49] [L9] COND TRUE i < 100 VAL [i=49] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=50] [L9] COND TRUE i < 100 VAL [i=50] [L10] COND FALSE !(i < 50) [L11] i = i-1 VAL [i=49] [L9] COND TRUE i < 100 VAL [i=49] Loop: [L10] COND TRUE i < 50 [L10] i = i+1 [L9] COND TRUE i < 100 [L10] COND FALSE !(i < 50) [L11] i = i-1 [L9] COND TRUE i < 100 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-21 09:10:00,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:00,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:00,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:00,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:00,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-21 09:10:01,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc69dd2-faeb-4125-91b6-dffe24e9b1ee/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)