./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 991fb09b573d5827d0db553f1ea89a581f5a664ba8b68d6f14a043df738f2f6d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:17:51,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:17:51,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:17:51,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:17:51,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:17:51,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:17:51,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:17:51,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:17:51,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:17:51,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:17:51,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:17:51,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:17:51,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:17:51,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:17:51,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:17:51,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:17:51,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:17:51,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:17:51,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:17:51,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:17:51,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:17:51,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:17:51,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:17:51,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:17:51,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:17:51,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:17:51,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:17:51,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:17:51,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:17:51,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:17:51,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:17:51,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:17:51,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:17:51,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:17:51,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:17:51,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:17:51,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:17:51,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:17:51,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:17:51,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:17:51,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:17:51,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:17:51,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:17:51,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:17:51,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:17:51,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:17:51,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:17:51,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:17:51,761 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:17:51,761 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:17:51,762 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:17:51,762 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:17:51,763 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:17:51,763 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:17:51,764 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:17:51,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:17:51,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:17:51,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:17:51,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:17:51,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:17:51,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:17:51,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:17:51,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:17:51,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:17:51,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:17:51,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:17:51,766 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:17:51,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:17:51,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:17:51,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:17:51,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:17:51,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:17:51,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:17:51,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:17:51,771 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:17:51,772 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_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 991fb09b573d5827d0db553f1ea89a581f5a664ba8b68d6f14a043df738f2f6d [2021-10-28 23:17:52,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:17:52,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:17:52,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:17:52,076 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:17:52,078 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:17:52,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i [2021-10-28 23:17:52,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/data/e4b8ecf7b/8445c1f1edb349cd8577f2a5c1203593/FLAG49674de47 [2021-10-28 23:17:52,716 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:17:52,717 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i [2021-10-28 23:17:52,731 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/data/e4b8ecf7b/8445c1f1edb349cd8577f2a5c1203593/FLAG49674de47 [2021-10-28 23:17:53,043 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/data/e4b8ecf7b/8445c1f1edb349cd8577f2a5c1203593 [2021-10-28 23:17:53,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:17:53,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:17:53,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:17:53,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:17:53,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:17:53,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a77af91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53, skipping insertion in model container [2021-10-28 23:17:53,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:17:53,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:17:53,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:17:53,472 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:17:53,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:17:53,585 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:17:53,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53 WrapperNode [2021-10-28 23:17:53,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:17:53,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:17:53,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:17:53,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:17:53,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:17:53,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:17:53,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:17:53,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:17:53,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:17:53,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:17:53,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:17:53,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:17:53,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (1/1) ... [2021-10-28 23:17:53,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:53,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:53,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:53,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:17:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:17:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:17:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:17:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:17:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:17:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:17:54,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:17:54,241 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 23:17:54,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:17:54 BoogieIcfgContainer [2021-10-28 23:17:54,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:17:54,244 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:17:54,244 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:17:54,256 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:17:54,257 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:17:54,258 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:17:53" (1/3) ... [2021-10-28 23:17:54,261 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@233d96f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:17:54, skipping insertion in model container [2021-10-28 23:17:54,262 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:17:54,262 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:53" (2/3) ... [2021-10-28 23:17:54,262 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@233d96f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:17:54, skipping insertion in model container [2021-10-28 23:17:54,263 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:17:54,263 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:17:54" (3/3) ... [2021-10-28 23:17:54,264 INFO L389 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrstr-alloca-2.i [2021-10-28 23:17:54,308 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:17:54,308 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:17:54,308 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:17:54,308 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:17:54,309 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:17:54,309 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:17:54,309 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:17:54,309 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:17:54,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 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) [2021-10-28 23:17:54,348 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 21 [2021-10-28 23:17:54,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:17:54,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:17:54,355 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 23:17:54,355 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:17:54,355 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:17:54,356 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 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) [2021-10-28 23:17:54,359 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 21 [2021-10-28 23:17:54,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:17:54,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:17:54,360 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 23:17:54,360 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:17:54,368 INFO L791 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 32#L555true assume !(main_~length1~0 < 1); 29#L555-2true assume !(main_~length2~0 < 1); 7#L558-1true call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 36#L564-3true [2021-10-28 23:17:54,368 INFO L793 eck$LassoCheckResult]: Loop: 36#L564-3true assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 24#L564-2true main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 36#L564-3true [2021-10-28 23:17:54,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:54,375 INFO L85 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2021-10-28 23:17:54,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:54,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743326330] [2021-10-28 23:17:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:54,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:54,526 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:17:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:54,597 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:17:54,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:54,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2021-10-28 23:17:54,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:54,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721156345] [2021-10-28 23:17:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:54,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:54,628 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:17:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:54,653 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:17:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2021-10-28 23:17:54,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:54,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922127888] [2021-10-28 23:17:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:54,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:54,708 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:17:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:54,752 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:17:55,207 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:17:55,208 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:17:55,208 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:17:55,208 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:17:55,209 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:17:55,209 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:55,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:17:55,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:17:55,209 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration1_Lasso [2021-10-28 23:17:55,210 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:17:55,210 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:17:55,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:55,756 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:17:55,761 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:17:55,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:55,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:55,777 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 [2021-10-28 23:17:55,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:55,788 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:55,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:55,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:55,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:55,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:55,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:55,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:17:55,809 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:55,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-28 23:17:55,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:55,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:55,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:55,862 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 [2021-10-28 23:17:55,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:55,872 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:55,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:55,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:55,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:55,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:55,874 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:55,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:17:55,892 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:55,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:55,928 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:55,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:55,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:55,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:17:55,934 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 [2021-10-28 23:17:55,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:55,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:55,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:55,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:55,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:55,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:55,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:55,964 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:55,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:55,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:55,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:55,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:55,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:17:55,997 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 [2021-10-28 23:17:56,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:56,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:56,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:56,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:56,013 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:17:56,014 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:17:56,030 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:56,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:56,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:56,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:56,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:56,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:17:56,076 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 [2021-10-28 23:17:56,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:56,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:56,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:56,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:56,114 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:17:56,114 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:17:56,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:17:56,199 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2021-10-28 23:17:56,199 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. [2021-10-28 23:17:56,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:56,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:56,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:56,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:17:56,273 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:17:56,308 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-28 23:17:56,308 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:17:56,309 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_1, ULTIMATE.start_main_~i~0) = 1*v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_1 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [1*v_rep(select #length ULTIMATE.start_main_#t~malloc22.base)_1 - 1*ULTIMATE.start_main_~length1~0 >= 0] [2021-10-28 23:17:56,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:56,398 INFO L297 tatePredicateManager]: 5 out of 7 supporting invariants were superfluous and have been removed [2021-10-28 23:17:56,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:56,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:17:56,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:17:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:56,518 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:17:56,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:17:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:56,568 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:17:56,570 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 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 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) [2021-10-28 23:17:56,712 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 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 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 96 states and 142 transitions. Complement of second has 8 states. [2021-10-28 23:17:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:17:56,715 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) [2021-10-28 23:17:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2021-10-28 23:17:56,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 96 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-28 23:17:56,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:17:56,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 96 transitions. Stem has 7 letters. Loop has 2 letters. [2021-10-28 23:17:56,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:17:56,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 96 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-28 23:17:56,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:17:56,725 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 96 states and 142 transitions. [2021-10-28 23:17:56,742 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 19 [2021-10-28 23:17:56,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 96 states to 32 states and 43 transitions. [2021-10-28 23:17:56,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-28 23:17:56,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-10-28 23:17:56,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 43 transitions. [2021-10-28 23:17:56,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:56,751 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 43 transitions. [2021-10-28 23:17:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 43 transitions. [2021-10-28 23:17:56,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-28 23:17:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.34375) internal successors, (43), 31 states have internal predecessors, (43), 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) [2021-10-28 23:17:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2021-10-28 23:17:56,837 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 43 transitions. [2021-10-28 23:17:56,837 INFO L587 BuchiCegarLoop]: Abstraction has 32 states and 43 transitions. [2021-10-28 23:17:56,837 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:17:56,837 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 43 transitions. [2021-10-28 23:17:56,838 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 19 [2021-10-28 23:17:56,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:17:56,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:17:56,839 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:56,839 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:17:56,839 INFO L791 eck$LassoCheckResult]: Stem: 243#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 227#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 228#L555 assume !(main_~length1~0 < 1); 245#L555-2 assume !(main_~length2~0 < 1); 223#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 224#L564-3 assume !(main_~i~0 < main_~length1~0); 244#L564-4 main_~i~1 := 0; 235#L568-3 [2021-10-28 23:17:56,839 INFO L793 eck$LassoCheckResult]: Loop: 235#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 237#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 235#L568-3 [2021-10-28 23:17:56,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1806935662, now seen corresponding path program 1 times [2021-10-28 23:17:56,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:56,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405591490] [2021-10-28 23:17:56,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:56,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:56,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:57,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:57,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405591490] [2021-10-28 23:17:57,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405591490] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:57,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:57,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:17:57,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834078043] [2021-10-28 23:17:57,010 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:17:57,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:57,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 1 times [2021-10-28 23:17:57,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:57,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895516786] [2021-10-28 23:17:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:57,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:57,018 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:17:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:57,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:17:57,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:17:57,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:17:57,089 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:57,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:17:57,132 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-10-28 23:17:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:17:57,133 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2021-10-28 23:17:57,137 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 19 [2021-10-28 23:17:57,139 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 43 transitions. [2021-10-28 23:17:57,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-10-28 23:17:57,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-10-28 23:17:57,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 43 transitions. [2021-10-28 23:17:57,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:57,140 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-10-28 23:17:57,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 43 transitions. [2021-10-28 23:17:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-10-28 23:17:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.3125) internal successors, (42), 31 states have internal predecessors, (42), 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) [2021-10-28 23:17:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-10-28 23:17:57,148 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-10-28 23:17:57,148 INFO L587 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-10-28 23:17:57,148 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:17:57,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 42 transitions. [2021-10-28 23:17:57,153 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 19 [2021-10-28 23:17:57,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:17:57,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:17:57,154 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:57,154 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:17:57,154 INFO L791 eck$LassoCheckResult]: Stem: 315#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 299#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 300#L555 assume !(main_~length1~0 < 1); 317#L555-2 assume !(main_~length2~0 < 1); 293#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 294#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 312#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 313#L564-3 assume !(main_~i~0 < main_~length1~0); 316#L564-4 main_~i~1 := 0; 307#L568-3 [2021-10-28 23:17:57,154 INFO L793 eck$LassoCheckResult]: Loop: 307#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 309#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 307#L568-3 [2021-10-28 23:17:57,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:57,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1298440016, now seen corresponding path program 1 times [2021-10-28 23:17:57,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:57,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893938885] [2021-10-28 23:17:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:57,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:57,175 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:17:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:57,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:17:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 2 times [2021-10-28 23:17:57,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:57,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844972044] [2021-10-28 23:17:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:57,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:57,198 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:17:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:57,203 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:17:57,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2034626574, now seen corresponding path program 1 times [2021-10-28 23:17:57,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:57,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371717407] [2021-10-28 23:17:57,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:57,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:57,219 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:17:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:57,237 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:17:57,631 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:17:57,631 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:17:57,631 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:17:57,631 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:17:57,631 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:17:57,631 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:57,631 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:17:57,632 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:17:57,632 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration3_Lasso [2021-10-28 23:17:57,632 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:17:57,632 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:17:57,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:57,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:17:58,153 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:17:58,154 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:17:58,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,165 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,169 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 [2021-10-28 23:17:58,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,178 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:58,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:58,179 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:58,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:17:58,196 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,236 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,245 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 [2021-10-28 23:17:58,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,256 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:58,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:58,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:58,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:17:58,272 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,314 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,320 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 [2021-10-28 23:17:58,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:58,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,335 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:58,335 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:58,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:17:58,352 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,393 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,400 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 [2021-10-28 23:17:58,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:58,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,411 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:58,411 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:58,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:17:58,424 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,464 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,471 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 [2021-10-28 23:17:58,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,483 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:17:58,484 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:17:58,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:17:58,500 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,545 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,552 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 [2021-10-28 23:17:58,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,562 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:58,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,563 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:58,563 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:58,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:17:58,578 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,619 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,625 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 [2021-10-28 23:17:58,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:58,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,635 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:58,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:58,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:17:58,653 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,691 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:17:58,696 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 [2021-10-28 23:17:58,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,711 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:17:58,711 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:17:58,724 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,759 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,766 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 [2021-10-28 23:17:58,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:17:58,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:17:58,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:17:58,796 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,835 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,841 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 [2021-10-28 23:17:58,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,848 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:58,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:17:58,849 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:58,849 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:58,850 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,889 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:17:58,891 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 [2021-10-28 23:17:58,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:17:58,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,898 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,899 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:17:58,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:17:58,900 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:17:58,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:58,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,920 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:58,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:17:58,922 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 [2021-10-28 23:17:58,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:17:58,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:17:58,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:17:58,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:17:58,940 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:17:58,940 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:17:58,959 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:17:58,981 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-10-28 23:17:58,981 INFO L444 ModelExtractionUtils]: 21 out of 34 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-10-28 23:17:58,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:17:58,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:58,989 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:59,007 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:17:59,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:17:59,030 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 23:17:59,030 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:17:59,030 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, ULTIMATE.start_main_~length2~0) = -1*ULTIMATE.start_main_~i~1 + 1*ULTIMATE.start_main_~length2~0 Supporting invariants [] [2021-10-28 23:17:59,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:59,086 INFO L297 tatePredicateManager]: 7 out of 7 supporting invariants were superfluous and have been removed [2021-10-28 23:17:59,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:59,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:17:59,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:17:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:59,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:17:59,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:17:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:59,165 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:17:59,165 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 42 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-28 23:17:59,225 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 42 transitions. cyclomatic complexity: 14. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Result 55 states and 75 transitions. Complement of second has 6 states. [2021-10-28 23:17:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:17:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-28 23:17:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2021-10-28 23:17:59,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 9 letters. Loop has 2 letters. [2021-10-28 23:17:59,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:17:59,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 11 letters. Loop has 2 letters. [2021-10-28 23:17:59,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:17:59,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 9 letters. Loop has 4 letters. [2021-10-28 23:17:59,228 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:17:59,228 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 75 transitions. [2021-10-28 23:17:59,229 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 23:17:59,230 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 33 states and 44 transitions. [2021-10-28 23:17:59,230 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-28 23:17:59,230 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 23:17:59,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 44 transitions. [2021-10-28 23:17:59,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:59,231 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-10-28 23:17:59,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 44 transitions. [2021-10-28 23:17:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-28 23:17:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 32 states have internal predecessors, (44), 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) [2021-10-28 23:17:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2021-10-28 23:17:59,234 INFO L704 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-10-28 23:17:59,234 INFO L587 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-10-28 23:17:59,234 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:17:59,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 44 transitions. [2021-10-28 23:17:59,235 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 23:17:59,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:17:59,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:17:59,235 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:59,235 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:17:59,236 INFO L791 eck$LassoCheckResult]: Stem: 487#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 470#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 471#L555 assume !(main_~length1~0 < 1); 489#L555-2 assume !(main_~length2~0 < 1); 464#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 465#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 484#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 485#L564-3 assume !(main_~i~0 < main_~length1~0); 488#L564-4 main_~i~1 := 0; 478#L568-3 assume !(main_~i~1 < main_~length2~0); 479#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 486#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 476#L518-4 [2021-10-28 23:17:59,236 INFO L793 eck$LassoCheckResult]: Loop: 476#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 477#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 490#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 476#L518-4 [2021-10-28 23:17:59,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:59,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1351083894, now seen corresponding path program 1 times [2021-10-28 23:17:59,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:59,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984970687] [2021-10-28 23:17:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:59,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:59,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:17:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:17:59,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:59,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984970687] [2021-10-28 23:17:59,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984970687] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:59,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:59,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:17:59,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142118154] [2021-10-28 23:17:59,315 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:17:59,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash 79603, now seen corresponding path program 1 times [2021-10-28 23:17:59,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:59,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776122823] [2021-10-28 23:17:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:59,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:59,323 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:17:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:59,335 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:17:59,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:17:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:17:59,377 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:59,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:17:59,400 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2021-10-28 23:17:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:17:59,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 44 transitions. [2021-10-28 23:17:59,403 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 23:17:59,406 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 44 transitions. [2021-10-28 23:17:59,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-28 23:17:59,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 23:17:59,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 44 transitions. [2021-10-28 23:17:59,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:59,408 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-10-28 23:17:59,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 44 transitions. [2021-10-28 23:17:59,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-28 23:17:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.303030303030303) internal successors, (43), 32 states have internal predecessors, (43), 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) [2021-10-28 23:17:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-10-28 23:17:59,416 INFO L704 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-10-28 23:17:59,416 INFO L587 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-10-28 23:17:59,416 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:17:59,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 43 transitions. [2021-10-28 23:17:59,417 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 23:17:59,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:17:59,417 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:17:59,418 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:59,418 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:17:59,419 INFO L791 eck$LassoCheckResult]: Stem: 561#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 544#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 545#L555 assume !(main_~length1~0 < 1); 563#L555-2 assume !(main_~length2~0 < 1); 540#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 541#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 558#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 559#L564-3 assume !(main_~i~0 < main_~length1~0); 562#L564-4 main_~i~1 := 0; 553#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 554#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 555#L568-3 assume !(main_~i~1 < main_~length2~0); 556#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 560#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 550#L518-4 [2021-10-28 23:17:59,419 INFO L793 eck$LassoCheckResult]: Loop: 550#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 551#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 564#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 550#L518-4 [2021-10-28 23:17:59,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1313217428, now seen corresponding path program 1 times [2021-10-28 23:17:59,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:59,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280728753] [2021-10-28 23:17:59,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:59,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:17:59,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:59,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280728753] [2021-10-28 23:17:59,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280728753] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:17:59,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249839910] [2021-10-28 23:17:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:59,698 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:17:59,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:59,699 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:17:59,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 23:17:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:59,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 23:17:59,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:18:00,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-10-28 23:18:00,069 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:18:00,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2021-10-28 23:18:00,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 23:18:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:18:00,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249839910] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:18:00,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:18:00,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-28 23:18:00,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867636819] [2021-10-28 23:18:00,121 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:18:00,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:00,122 INFO L85 PathProgramCache]: Analyzing trace with hash 79603, now seen corresponding path program 2 times [2021-10-28 23:18:00,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:00,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158057050] [2021-10-28 23:18:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:00,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:00,127 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:00,131 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:00,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:00,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:18:00,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:18:00,184 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. cyclomatic complexity: 14 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) [2021-10-28 23:18:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:00,309 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-10-28 23:18:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:18:00,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 48 transitions. [2021-10-28 23:18:00,311 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 23:18:00,311 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 36 states and 46 transitions. [2021-10-28 23:18:00,312 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-28 23:18:00,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 23:18:00,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2021-10-28 23:18:00,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:00,312 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-10-28 23:18:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2021-10-28 23:18:00,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-10-28 23:18:00,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 34 states have internal predecessors, (45), 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) [2021-10-28 23:18:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-10-28 23:18:00,315 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-10-28 23:18:00,315 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-10-28 23:18:00,315 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 23:18:00,315 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2021-10-28 23:18:00,316 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 23:18:00,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:18:00,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:18:00,317 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:00,317 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:18:00,317 INFO L791 eck$LassoCheckResult]: Stem: 695#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 677#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 678#L555 assume !(main_~length1~0 < 1); 697#L555-2 assume !(main_~length2~0 < 1); 673#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 674#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 691#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 692#L564-3 assume !(main_~i~0 < main_~length1~0); 696#L564-4 main_~i~1 := 0; 685#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 686#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 687#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 688#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 699#L568-3 assume !(main_~i~1 < main_~length2~0); 693#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 694#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 683#L518-4 [2021-10-28 23:18:00,317 INFO L793 eck$LassoCheckResult]: Loop: 683#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 684#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 698#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 683#L518-4 [2021-10-28 23:18:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash -716718030, now seen corresponding path program 2 times [2021-10-28 23:18:00,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:00,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728003720] [2021-10-28 23:18:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:00,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:00,337 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:00,360 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:00,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:00,361 INFO L85 PathProgramCache]: Analyzing trace with hash 79603, now seen corresponding path program 3 times [2021-10-28 23:18:00,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:00,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287610750] [2021-10-28 23:18:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:00,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:00,365 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:00,369 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1464353502, now seen corresponding path program 1 times [2021-10-28 23:18:00,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:00,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988511255] [2021-10-28 23:18:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:00,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:00,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:00,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988511255] [2021-10-28 23:18:00,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988511255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:18:00,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775087945] [2021-10-28 23:18:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:00,718 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:18:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:00,720 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:18:00,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 23:18:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:00,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 23:18:00,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:18:00,954 INFO L354 Elim1Store]: treesize reduction 40, result has 20.0 percent of original size [2021-10-28 23:18:00,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 27 [2021-10-28 23:18:25,044 WARN L207 SmtUtils]: Spent 12.02 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-28 23:18:49,157 WARN L207 SmtUtils]: Spent 12.02 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-28 23:18:49,230 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-10-28 23:18:49,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 19 [2021-10-28 23:18:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:18:49,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775087945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:18:49,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:18:49,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2021-10-28 23:18:49,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556671824] [2021-10-28 23:18:49,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 23:18:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=342, Unknown=2, NotChecked=0, Total=420 [2021-10-28 23:18:49,287 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. cyclomatic complexity: 14 Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 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) [2021-10-28 23:19:13,704 WARN L207 SmtUtils]: Spent 24.04 s on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-10-28 23:19:37,806 WARN L207 SmtUtils]: Spent 24.05 s on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-10-28 23:20:01,910 WARN L207 SmtUtils]: Spent 24.05 s on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-10-28 23:20:13,966 WARN L207 SmtUtils]: Spent 12.02 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-28 23:20:26,019 WARN L207 SmtUtils]: Spent 12.02 s on a formula simplification that was a NOOP. DAG size: 39 [2021-10-28 23:20:38,075 WARN L207 SmtUtils]: Spent 12.02 s on a formula simplification that was a NOOP. DAG size: 41 [2021-10-28 23:20:38,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:38,171 INFO L93 Difference]: Finished difference Result 111 states and 141 transitions. [2021-10-28 23:20:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-28 23:20:38,172 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 141 transitions. [2021-10-28 23:20:38,173 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 62 [2021-10-28 23:20:38,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 111 states and 141 transitions. [2021-10-28 23:20:38,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2021-10-28 23:20:38,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2021-10-28 23:20:38,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2021-10-28 23:20:38,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:20:38,177 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-10-28 23:20:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2021-10-28 23:20:38,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 41. [2021-10-28 23:20:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 40 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) [2021-10-28 23:20:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-10-28 23:20:38,181 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-10-28 23:20:38,181 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-10-28 23:20:38,181 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 23:20:38,181 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 52 transitions. [2021-10-28 23:20:38,182 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 23:20:38,182 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:38,182 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:38,183 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:38,183 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:20:38,183 INFO L791 eck$LassoCheckResult]: Stem: 955#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 937#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 938#L555 assume !(main_~length1~0 < 1); 957#L555-2 assume !(main_~length2~0 < 1); 931#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 932#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 951#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 952#L564-3 assume !(main_~i~0 < main_~length1~0); 956#L564-4 main_~i~1 := 0; 945#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 946#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 947#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 948#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 965#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 964#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 963#L568-3 assume !(main_~i~1 < main_~length2~0); 962#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 961#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 959#L518-4 [2021-10-28 23:20:38,183 INFO L793 eck$LassoCheckResult]: Loop: 959#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 960#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 958#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 959#L518-4 [2021-10-28 23:20:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:38,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1569540784, now seen corresponding path program 3 times [2021-10-28 23:20:38,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:38,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463829633] [2021-10-28 23:20:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:38,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:38,201 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:38,220 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:38,221 INFO L85 PathProgramCache]: Analyzing trace with hash 79603, now seen corresponding path program 4 times [2021-10-28 23:20:38,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:38,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045004409] [2021-10-28 23:20:38,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:38,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:38,226 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:38,229 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:38,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1119505220, now seen corresponding path program 2 times [2021-10-28 23:20:38,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:38,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968821240] [2021-10-28 23:20:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:38,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:38,249 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:38,271 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:40,834 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:20:40,834 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:20:40,834 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:20:40,834 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:20:40,834 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:20:40,834 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:40,834 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:20:40,834 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:20:40,834 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration7_Lasso [2021-10-28 23:20:40,834 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:20:40,835 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:20:40,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:40,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:41,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:42,194 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:20:42,194 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:20:42,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,205 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 23:20:42,206 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 [2021-10-28 23:20:42,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,213 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,214 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,214 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,223 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,243 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:20:42,244 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 [2021-10-28 23:20:42,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,251 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,252 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,252 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,253 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,273 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:20:42,275 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 [2021-10-28 23:20:42,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,284 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:20:42,285 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:20:42,295 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,315 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 23:20:42,316 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 [2021-10-28 23:20:42,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,333 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-28 23:20:42,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,381 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,387 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 [2021-10-28 23:20:42,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,396 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,397 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,397 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 23:20:42,412 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,447 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,448 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 [2021-10-28 23:20:42,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 23:20:42,468 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,506 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,509 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 [2021-10-28 23:20:42,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 23:20:42,528 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,565 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,567 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 [2021-10-28 23:20:42,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,583 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:20:42,583 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:20:42,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 23:20:42,600 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,637 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,641 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 [2021-10-28 23:20:42,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 23:20:42,660 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,684 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 23:20:42,686 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 [2021-10-28 23:20:42,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,692 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,693 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,693 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,694 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,717 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,719 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 [2021-10-28 23:20:42,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 23:20:42,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,728 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,748 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 23:20:42,749 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 [2021-10-28 23:20:42,756 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,756 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,756 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,757 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,758 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,778 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 23:20:42,780 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 [2021-10-28 23:20:42,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,787 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,788 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,809 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,810 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 [2021-10-28 23:20:42,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 23:20:42,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:20:42,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:20:42,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:20:42,832 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:42,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:42,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:42,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:42,852 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:42,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 23:20:42,860 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 [2021-10-28 23:20:42,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:42,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:42,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:42,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:42,893 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:20:42,893 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:20:42,932 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:20:43,003 INFO L443 ModelExtractionUtils]: Simplification made 15 calls to the SMT solver. [2021-10-28 23:20:43,003 INFO L444 ModelExtractionUtils]: 14 out of 64 variables were initially zero. Simplification set additionally 47 variables to zero. [2021-10-28 23:20:43,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:43,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:43,009 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:43,013 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:20:43,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 23:20:43,042 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 23:20:43,042 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:20:43,042 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~nondetString2~0.base)_2, ULTIMATE.start_cstrlen_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_~nondetString2~0.base)_2 - 1*ULTIMATE.start_cstrlen_~s~0.offset Supporting invariants [] [2021-10-28 23:20:43,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:43,162 INFO L297 tatePredicateManager]: 21 out of 22 supporting invariants were superfluous and have been removed [2021-10-28 23:20:43,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:43,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:20:43,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:43,290 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:20:43,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:43,329 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2021-10-28 23:20:43,329 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 52 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:20:43,382 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 52 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 61 states and 80 transitions. Complement of second has 5 states. [2021-10-28 23:20:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:20:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:20:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2021-10-28 23:20:43,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 18 letters. Loop has 3 letters. [2021-10-28 23:20:43,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:20:43,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 21 letters. Loop has 3 letters. [2021-10-28 23:20:43,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:20:43,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 18 letters. Loop has 6 letters. [2021-10-28 23:20:43,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:20:43,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 80 transitions. [2021-10-28 23:20:43,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 23:20:43,387 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 43 states and 55 transitions. [2021-10-28 23:20:43,387 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-10-28 23:20:43,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-10-28 23:20:43,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 55 transitions. [2021-10-28 23:20:43,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:43,387 INFO L681 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-10-28 23:20:43,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 55 transitions. [2021-10-28 23:20:43,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-10-28 23:20:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 41 states have internal predecessors, (54), 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) [2021-10-28 23:20:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2021-10-28 23:20:43,391 INFO L704 BuchiCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-10-28 23:20:43,391 INFO L587 BuchiCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-10-28 23:20:43,391 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 23:20:43,391 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 54 transitions. [2021-10-28 23:20:43,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 23:20:43,392 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:43,392 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:43,393 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:43,393 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:43,393 INFO L791 eck$LassoCheckResult]: Stem: 1239#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1218#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 1219#L555 assume !(main_~length1~0 < 1); 1241#L555-2 assume !(main_~length2~0 < 1); 1214#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 1215#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 1235#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 1236#L564-3 assume !(main_~i~0 < main_~length1~0); 1240#L564-4 main_~i~1 := 0; 1228#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1229#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1247#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1246#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1245#L568-3 assume !(main_~i~1 < main_~length2~0); 1237#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 1238#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 1224#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 1225#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 1212#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 1213#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 1220#L542-4 [2021-10-28 23:20:43,394 INFO L793 eck$LassoCheckResult]: Loop: 1220#L542-4 goto; 1233#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 1216#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 1217#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 1234#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 1206#L525 assume 0 == cstrncmp_~n;cstrncmp_#res := 0; 1207#L533 cstrstr_#t~ret16 := cstrncmp_#res; 1222#L542-2 assume !!(0 != cstrstr_#t~ret16);havoc cstrstr_#t~ret16; 1220#L542-4 [2021-10-28 23:20:43,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:43,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1849679959, now seen corresponding path program 1 times [2021-10-28 23:20:43,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:43,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959453428] [2021-10-28 23:20:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:43,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:43,410 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:43,428 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1079765744, now seen corresponding path program 1 times [2021-10-28 23:20:43,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:43,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384653127] [2021-10-28 23:20:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:43,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:43,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:43,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384653127] [2021-10-28 23:20:43,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384653127] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:43,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:43,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:20:43,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160524605] [2021-10-28 23:20:43,448 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:20:43,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:43,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:20:43,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:20:43,449 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. cyclomatic complexity: 16 Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:20:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:43,466 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-10-28 23:20:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:20:43,467 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2021-10-28 23:20:43,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 23:20:43,468 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 41 states and 50 transitions. [2021-10-28 23:20:43,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-10-28 23:20:43,469 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-10-28 23:20:43,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 50 transitions. [2021-10-28 23:20:43,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:43,469 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-10-28 23:20:43,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 50 transitions. [2021-10-28 23:20:43,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 23:20:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 40 states have internal predecessors, (50), 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) [2021-10-28 23:20:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2021-10-28 23:20:43,472 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-10-28 23:20:43,472 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-10-28 23:20:43,473 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 23:20:43,473 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 50 transitions. [2021-10-28 23:20:43,473 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 23:20:43,473 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:43,474 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:43,474 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:43,474 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:43,475 INFO L791 eck$LassoCheckResult]: Stem: 1332#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1311#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 1312#L555 assume !(main_~length1~0 < 1); 1334#L555-2 assume !(main_~length2~0 < 1); 1305#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 1306#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 1328#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 1329#L564-3 assume !(main_~i~0 < main_~length1~0); 1333#L564-4 main_~i~1 := 0; 1323#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1324#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1325#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1326#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1341#L568-3 assume !(main_~i~1 < main_~length2~0); 1330#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 1331#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 1318#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 1319#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 1307#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 1308#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 1313#L542-4 [2021-10-28 23:20:43,475 INFO L793 eck$LassoCheckResult]: Loop: 1313#L542-4 goto; 1322#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 1309#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 1310#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 1327#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 1301#L525 assume !(0 == cstrncmp_~n); 1302#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 1316#L528 assume cstrncmp_#t~mem6 != cstrncmp_#t~mem7;havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;call cstrncmp_#t~mem9 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;call cstrncmp_#t~mem10 := read~int(cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, 1);cstrncmp_#res := cstrncmp_#t~mem9 % 256 - cstrncmp_#t~mem10 % 256;havoc cstrncmp_#t~mem9;havoc cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset;havoc cstrncmp_#t~mem10; 1317#L533 cstrstr_#t~ret16 := cstrncmp_#res; 1315#L542-2 assume !!(0 != cstrstr_#t~ret16);havoc cstrstr_#t~ret16; 1313#L542-4 [2021-10-28 23:20:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:43,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1849679959, now seen corresponding path program 2 times [2021-10-28 23:20:43,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:43,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638539806] [2021-10-28 23:20:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:43,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:43,490 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:43,508 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1728347221, now seen corresponding path program 1 times [2021-10-28 23:20:43,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:43,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905795402] [2021-10-28 23:20:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:43,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:43,517 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:43,527 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:43,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:43,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1941989675, now seen corresponding path program 1 times [2021-10-28 23:20:43,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:43,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541270416] [2021-10-28 23:20:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:43,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:20:43,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:43,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541270416] [2021-10-28 23:20:43,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541270416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:43,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677728008] [2021-10-28 23:20:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:43,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:20:43,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:43,625 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:20:43,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:43,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-28 23:20:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:43,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:20:43,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 23:20:43,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677728008] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:43,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:20:43,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-28 23:20:43,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057280984] [2021-10-28 23:20:44,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:20:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:20:44,409 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. cyclomatic complexity: 13 Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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) [2021-10-28 23:20:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:44,460 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2021-10-28 23:20:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:20:44,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 61 transitions. [2021-10-28 23:20:44,462 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 23:20:44,462 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 50 states and 59 transitions. [2021-10-28 23:20:44,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-28 23:20:44,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-28 23:20:44,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 59 transitions. [2021-10-28 23:20:44,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:44,463 INFO L681 BuchiCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-28 23:20:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 59 transitions. [2021-10-28 23:20:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-10-28 23:20:44,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.1875) internal successors, (57), 47 states have internal predecessors, (57), 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) [2021-10-28 23:20:44,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2021-10-28 23:20:44,467 INFO L704 BuchiCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-10-28 23:20:44,467 INFO L587 BuchiCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-10-28 23:20:44,467 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 23:20:44,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 57 transitions. [2021-10-28 23:20:44,468 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 23:20:44,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:44,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:44,469 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:44,469 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:20:44,469 INFO L791 eck$LassoCheckResult]: Stem: 1536#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1514#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 1515#L555 assume !(main_~length1~0 < 1); 1539#L555-2 assume !(main_~length2~0 < 1); 1508#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 1509#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 1532#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 1533#L564-3 assume !(main_~i~0 < main_~length1~0); 1537#L564-4 main_~i~1 := 0; 1527#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1528#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1529#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1530#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1551#L568-3 assume !(main_~i~1 < main_~length2~0); 1550#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 1540#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 1522#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 1523#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 1510#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 1511#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 1516#L542-4 goto; 1531#L543-2 [2021-10-28 23:20:44,469 INFO L793 eck$LassoCheckResult]: Loop: 1531#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 1512#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 1513#L543 assume !!(cstrstr_~sc~0 != cstrstr_~c~0); 1531#L543-2 [2021-10-28 23:20:44,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:44,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1505503948, now seen corresponding path program 1 times [2021-10-28 23:20:44,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:44,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001512360] [2021-10-28 23:20:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:44,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:44,482 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:44,499 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 99467, now seen corresponding path program 1 times [2021-10-28 23:20:44,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:44,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947090912] [2021-10-28 23:20:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:44,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:44,505 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:44,508 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:44,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1875287584, now seen corresponding path program 1 times [2021-10-28 23:20:44,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:44,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409550614] [2021-10-28 23:20:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:44,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:20:44,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:44,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409550614] [2021-10-28 23:20:44,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409550614] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:44,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7876627] [2021-10-28 23:20:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:44,698 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:20:44,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:44,701 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:20:44,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-28 23:20:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:44,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-28 23:20:44,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:45,096 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-28 23:20:45,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 32 [2021-10-28 23:20:45,422 INFO L354 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2021-10-28 23:20:45,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 38 [2021-10-28 23:20:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:20:45,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7876627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:45,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:20:45,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-28 23:20:45,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493742199] [2021-10-28 23:20:45,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:45,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:20:45,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:20:45,511 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. cyclomatic complexity: 14 Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:20:45,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:45,749 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2021-10-28 23:20:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:20:45,749 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 92 transitions. [2021-10-28 23:20:45,750 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 23:20:45,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 51 states and 60 transitions. [2021-10-28 23:20:45,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-28 23:20:45,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-28 23:20:45,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 60 transitions. [2021-10-28 23:20:45,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:45,752 INFO L681 BuchiCegarLoop]: Abstraction has 51 states and 60 transitions. [2021-10-28 23:20:45,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 60 transitions. [2021-10-28 23:20:45,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-10-28 23:20:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 50 states have (on average 1.18) internal successors, (59), 49 states have internal predecessors, (59), 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) [2021-10-28 23:20:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-10-28 23:20:45,756 INFO L704 BuchiCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-28 23:20:45,756 INFO L587 BuchiCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-28 23:20:45,756 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 23:20:45,756 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 59 transitions. [2021-10-28 23:20:45,757 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 23:20:45,757 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:45,757 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:45,758 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:45,758 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:20:45,759 INFO L791 eck$LassoCheckResult]: Stem: 1760#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1738#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 1739#L555 assume !(main_~length1~0 < 1); 1763#L555-2 assume !(main_~length2~0 < 1); 1734#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 1735#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 1756#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 1757#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 1766#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 1774#L564-3 assume !(main_~i~0 < main_~length1~0); 1761#L564-4 main_~i~1 := 0; 1750#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1751#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1752#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1753#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1772#L568-3 assume !(main_~i~1 < main_~length2~0); 1758#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 1759#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 1745#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 1746#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 1777#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 1776#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 1775#L542-4 goto; 1755#L543-2 [2021-10-28 23:20:45,759 INFO L793 eck$LassoCheckResult]: Loop: 1755#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 1736#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 1737#L543 assume !!(cstrstr_~sc~0 != cstrstr_~c~0); 1755#L543-2 [2021-10-28 23:20:45,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:45,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1779363886, now seen corresponding path program 2 times [2021-10-28 23:20:45,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:45,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599951308] [2021-10-28 23:20:45,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:45,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:45,776 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:45,793 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash 99467, now seen corresponding path program 2 times [2021-10-28 23:20:45,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:45,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899898860] [2021-10-28 23:20:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:45,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:45,798 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:45,801 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:45,802 INFO L85 PathProgramCache]: Analyzing trace with hash 543230270, now seen corresponding path program 2 times [2021-10-28 23:20:45,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:45,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071447542] [2021-10-28 23:20:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:45,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:45,816 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:45,834 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:48,368 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:20:48,369 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:20:48,369 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:20:48,369 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:20:48,369 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:20:48,369 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:48,369 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:20:48,369 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:20:48,369 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration11_Lasso [2021-10-28 23:20:48,369 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:20:48,369 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:20:48,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:48,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:20:49,639 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:20:49,640 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:20:49,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:49,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:49,643 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:49,645 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 [2021-10-28 23:20:49,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 23:20:49,652 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:49,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:49,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:49,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:49,658 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:20:49,658 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:20:49,661 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:20:49,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:49,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:49,686 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:49,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 23:20:49,689 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 [2021-10-28 23:20:49,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:20:49,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:20:49,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:20:49,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:20:49,711 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:20:49,711 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:20:49,736 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:20:49,760 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-10-28 23:20:49,761 INFO L444 ModelExtractionUtils]: 55 out of 70 variables were initially zero. Simplification set additionally 12 variables to zero. [2021-10-28 23:20:49,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:20:49,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:49,762 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:49,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 23:20:49,763 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:20:49,771 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 23:20:49,771 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:20:49,771 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrstr_~s.offset, v_rep(select #length ULTIMATE.start_cstrstr_~s.base)_1) = -1*ULTIMATE.start_cstrstr_~s.offset + 1*v_rep(select #length ULTIMATE.start_cstrstr_~s.base)_1 Supporting invariants [] [2021-10-28 23:20:49,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:49,866 INFO L297 tatePredicateManager]: 26 out of 26 supporting invariants were superfluous and have been removed [2021-10-28 23:20:49,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:49,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:20:49,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:49,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:20:49,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:50,004 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:20:50,004 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 59 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-10-28 23:20:50,022 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 59 transitions. cyclomatic complexity: 14. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 67 states and 78 transitions. Complement of second has 4 states. [2021-10-28 23:20:50,022 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 [2021-10-28 23:20:50,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-10-28 23:20:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2021-10-28 23:20:50,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 39 transitions. Stem has 23 letters. Loop has 3 letters. [2021-10-28 23:20:50,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:20:50,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 39 transitions. Stem has 26 letters. Loop has 3 letters. [2021-10-28 23:20:50,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:20:50,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 39 transitions. Stem has 23 letters. Loop has 6 letters. [2021-10-28 23:20:50,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:20:50,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 67 states and 78 transitions. [2021-10-28 23:20:50,025 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:20:50,026 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 67 states to 50 states and 58 transitions. [2021-10-28 23:20:50,026 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-10-28 23:20:50,026 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 23:20:50,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 58 transitions. [2021-10-28 23:20:50,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:50,026 INFO L681 BuchiCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-28 23:20:50,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 58 transitions. [2021-10-28 23:20:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 23:20:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 50 states have (on average 1.16) internal successors, (58), 49 states have internal predecessors, (58), 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) [2021-10-28 23:20:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-10-28 23:20:50,029 INFO L704 BuchiCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-28 23:20:50,030 INFO L587 BuchiCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-28 23:20:50,030 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 23:20:50,030 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 58 transitions. [2021-10-28 23:20:50,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:20:50,030 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:50,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:50,031 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:50,032 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:20:50,032 INFO L791 eck$LassoCheckResult]: Stem: 2088#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2062#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 2063#L555 assume !(main_~length1~0 < 1); 2090#L555-2 assume !(main_~length2~0 < 1); 2055#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 2056#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2084#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2085#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2092#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2093#L564-3 assume !(main_~i~0 < main_~length1~0); 2089#L564-4 main_~i~1 := 0; 2076#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2077#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2078#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2079#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2096#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2095#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2094#L568-3 assume !(main_~i~1 < main_~length2~0); 2086#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 2087#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 2072#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2073#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2091#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 2074#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2075#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2057#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 2058#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 2064#L542-4 goto; 2080#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 2059#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 2061#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 2082#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 2047#L525 assume !(0 == cstrncmp_~n); 2048#L527-4 [2021-10-28 23:20:50,032 INFO L793 eck$LassoCheckResult]: Loop: 2048#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 2069#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 2065#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 2051#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 2052#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 2048#L527-4 [2021-10-28 23:20:50,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:50,033 INFO L85 PathProgramCache]: Analyzing trace with hash 577420407, now seen corresponding path program 1 times [2021-10-28 23:20:50,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:50,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789657278] [2021-10-28 23:20:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:50,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:50,086 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:50,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:50,129 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:50,130 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 1 times [2021-10-28 23:20:50,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:50,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430760571] [2021-10-28 23:20:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:50,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:50,144 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:50,149 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:50,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:50,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1867951025, now seen corresponding path program 1 times [2021-10-28 23:20:50,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:50,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134739685] [2021-10-28 23:20:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:50,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:50,238 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 23:20:50,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:50,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134739685] [2021-10-28 23:20:50,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134739685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:50,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222795480] [2021-10-28 23:20:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:50,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:20:50,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:50,240 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:20:50,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-28 23:20:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:50,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:20:50,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 23:20:50,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222795480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:50,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:20:50,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 23:20:50,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813064117] [2021-10-28 23:20:50,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:20:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:20:50,787 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. cyclomatic complexity: 13 Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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) [2021-10-28 23:20:50,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:50,892 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2021-10-28 23:20:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:20:50,893 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 99 transitions. [2021-10-28 23:20:50,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:20:50,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 55 states and 63 transitions. [2021-10-28 23:20:50,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 23:20:50,895 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 23:20:50,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 63 transitions. [2021-10-28 23:20:50,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:50,896 INFO L681 BuchiCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-28 23:20:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 63 transitions. [2021-10-28 23:20:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-10-28 23:20:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 53 states have (on average 1.150943396226415) internal successors, (61), 52 states have internal predecessors, (61), 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) [2021-10-28 23:20:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-10-28 23:20:50,899 INFO L704 BuchiCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-10-28 23:20:50,899 INFO L587 BuchiCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-10-28 23:20:50,899 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 23:20:50,899 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 53 states and 61 transitions. [2021-10-28 23:20:50,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:20:50,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:50,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:50,901 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:50,901 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:20:50,901 INFO L791 eck$LassoCheckResult]: Stem: 2357#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2331#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 2332#L555 assume !(main_~length1~0 < 1); 2359#L555-2 assume !(main_~length2~0 < 1); 2324#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 2325#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2353#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2354#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2361#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2365#L564-3 assume !(main_~i~0 < main_~length1~0); 2358#L564-4 main_~i~1 := 0; 2347#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2348#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2349#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2350#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2368#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2367#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2366#L568-3 assume !(main_~i~1 < main_~length2~0); 2355#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 2356#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 2341#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2342#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2360#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 2343#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2344#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2363#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 2364#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2362#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2326#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 2327#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 2333#L542-4 goto; 2345#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 2328#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 2330#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 2351#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 2316#L525 assume !(0 == cstrncmp_~n); 2317#L527-4 [2021-10-28 23:20:50,901 INFO L793 eck$LassoCheckResult]: Loop: 2317#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 2338#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 2334#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 2320#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 2321#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 2317#L527-4 [2021-10-28 23:20:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:50,902 INFO L85 PathProgramCache]: Analyzing trace with hash 609290751, now seen corresponding path program 2 times [2021-10-28 23:20:50,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:50,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091645567] [2021-10-28 23:20:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:50,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:20:51,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:51,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091645567] [2021-10-28 23:20:51,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091645567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:51,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371964135] [2021-10-28 23:20:51,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:20:51,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:20:51,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:51,079 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:20:51,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-28 23:20:51,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:20:51,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:20:51,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 23:20:51,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:51,307 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 23:20:51,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-28 23:20:51,710 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:20:51,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-28 23:20:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:20:51,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371964135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:51,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:20:51,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-10-28 23:20:51,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717619911] [2021-10-28 23:20:51,741 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:20:51,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:51,742 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 2 times [2021-10-28 23:20:51,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:51,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34133217] [2021-10-28 23:20:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:51,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:51,749 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:51,754 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:51,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:51,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 23:20:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-10-28 23:20:51,972 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. cyclomatic complexity: 13 Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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) [2021-10-28 23:20:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:52,269 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2021-10-28 23:20:52,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:20:52,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 73 transitions. [2021-10-28 23:20:52,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:20:52,271 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 56 states and 64 transitions. [2021-10-28 23:20:52,271 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 23:20:52,271 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 23:20:52,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 64 transitions. [2021-10-28 23:20:52,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:20:52,272 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-10-28 23:20:52,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 64 transitions. [2021-10-28 23:20:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2021-10-28 23:20:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 54 states have internal predecessors, (63), 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) [2021-10-28 23:20:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-10-28 23:20:52,275 INFO L704 BuchiCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-28 23:20:52,275 INFO L587 BuchiCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-28 23:20:52,275 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-28 23:20:52,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 63 transitions. [2021-10-28 23:20:52,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:20:52,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:20:52,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:20:52,277 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:52,277 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:20:52,277 INFO L791 eck$LassoCheckResult]: Stem: 2618#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2592#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 2593#L555 assume !(main_~length1~0 < 1); 2620#L555-2 assume !(main_~length2~0 < 1); 2585#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 2586#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2614#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2615#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2623#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2627#L564-3 assume !(main_~i~0 < main_~length1~0); 2619#L564-4 main_~i~1 := 0; 2608#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2609#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2610#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2611#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2622#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2631#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2630#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2629#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2628#L568-3 assume !(main_~i~1 < main_~length2~0); 2616#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 2617#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 2602#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2603#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2621#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 2604#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2605#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2626#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 2625#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2624#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2587#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 2588#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 2594#L542-4 goto; 2606#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 2589#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 2591#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 2612#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 2577#L525 assume !(0 == cstrncmp_~n); 2578#L527-4 [2021-10-28 23:20:52,277 INFO L793 eck$LassoCheckResult]: Loop: 2578#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 2599#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 2595#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 2581#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 2582#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 2578#L527-4 [2021-10-28 23:20:52,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:52,278 INFO L85 PathProgramCache]: Analyzing trace with hash -679136227, now seen corresponding path program 3 times [2021-10-28 23:20:52,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:52,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595007400] [2021-10-28 23:20:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:52,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:52,298 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:52,322 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:52,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:52,323 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 3 times [2021-10-28 23:20:52,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:52,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155571859] [2021-10-28 23:20:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:52,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:52,330 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:52,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:52,335 INFO L85 PathProgramCache]: Analyzing trace with hash 108202955, now seen corresponding path program 2 times [2021-10-28 23:20:52,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:52,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294239900] [2021-10-28 23:20:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:52,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 23:20:52,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:52,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294239900] [2021-10-28 23:20:52,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294239900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:52,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082682308] [2021-10-28 23:20:52,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:20:52,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:20:52,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:52,970 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:20:52,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-28 23:20:53,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:20:53,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:20:53,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 100 conjunts are in the unsatisfiable core [2021-10-28 23:20:53,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:53,237 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 23:20:53,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-28 23:20:53,659 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-28 23:20:53,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 28 [2021-10-28 23:20:54,273 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:20:54,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2021-10-28 23:20:55,568 INFO L354 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2021-10-28 23:20:55,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 25 [2021-10-28 23:20:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 23:20:55,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082682308] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:20:55,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:20:55,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 31 [2021-10-28 23:20:55,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506874402] [2021-10-28 23:20:55,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:55,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-28 23:20:55,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=845, Unknown=1, NotChecked=0, Total=930 [2021-10-28 23:20:55,756 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. cyclomatic complexity: 13 Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 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) [2021-10-28 23:21:21,808 WARN L207 SmtUtils]: Spent 24.81 s on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-10-28 23:21:50,196 WARN L207 SmtUtils]: Spent 27.75 s on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2021-10-28 23:21:50,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:50,657 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-10-28 23:21:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 23:21:50,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 135 transitions. [2021-10-28 23:21:50,658 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-10-28 23:21:50,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 115 states and 130 transitions. [2021-10-28 23:21:50,660 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-10-28 23:21:50,660 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-10-28 23:21:50,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 130 transitions. [2021-10-28 23:21:50,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:21:50,660 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 130 transitions. [2021-10-28 23:21:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 130 transitions. [2021-10-28 23:21:50,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2021-10-28 23:21:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.1379310344827587) internal successors, (99), 86 states have internal predecessors, (99), 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) [2021-10-28 23:21:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2021-10-28 23:21:50,664 INFO L704 BuchiCegarLoop]: Abstraction has 87 states and 99 transitions. [2021-10-28 23:21:50,664 INFO L587 BuchiCegarLoop]: Abstraction has 87 states and 99 transitions. [2021-10-28 23:21:50,665 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-28 23:21:50,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 99 transitions. [2021-10-28 23:21:50,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:21:50,665 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:21:50,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:21:50,666 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:50,667 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:21:50,667 INFO L791 eck$LassoCheckResult]: Stem: 2991#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2962#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 2963#L555 assume !(main_~length1~0 < 1); 2994#L555-2 assume !(main_~length2~0 < 1); 2958#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 2959#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3000#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3001#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3002#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3034#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2987#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2988#L564-3 assume !(main_~i~0 < main_~length1~0); 2992#L564-4 main_~i~1 := 0; 2993#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2998#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2999#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3023#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3024#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3017#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3018#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3013#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3014#L568-3 assume !(main_~i~1 < main_~length2~0); 2989#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 2990#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 3032#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3008#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3009#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3031#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3006#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3007#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3005#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3003#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2956#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 2957#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 2964#L542-4 goto; 3026#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 2996#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 2984#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 2985#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 2948#L525 assume !(0 == cstrncmp_~n); 2949#L527-4 [2021-10-28 23:21:50,667 INFO L793 eck$LassoCheckResult]: Loop: 2949#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 2969#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 2965#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 2952#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 2953#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 2949#L527-4 [2021-10-28 23:21:50,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:50,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1202872581, now seen corresponding path program 4 times [2021-10-28 23:21:50,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:50,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474039782] [2021-10-28 23:21:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:50,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:21:50,690 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:21:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:21:50,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:21:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 4 times [2021-10-28 23:21:50,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:50,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578442087] [2021-10-28 23:21:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:50,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:21:50,740 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:21:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:21:50,744 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:21:50,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1087325267, now seen corresponding path program 3 times [2021-10-28 23:21:50,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:50,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805451873] [2021-10-28 23:21:50,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:50,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:21:50,772 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:21:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:21:50,801 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:21:57,136 WARN L207 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 335 DAG size of output: 262 [2021-10-28 23:21:58,163 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:21:58,164 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:21:58,164 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:21:58,164 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:21:58,164 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:21:58,164 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:21:58,164 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:21:58,164 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:21:58,164 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration15_Lasso [2021-10-28 23:21:58,164 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:21:58,164 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:21:58,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:58,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:58,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:58,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:58,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:58,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:58,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:21:59,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:00,635 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:22:00,635 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:22:00,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:00,639 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:00,640 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 [2021-10-28 23:22:00,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 23:22:00,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:00,648 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:00,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:00,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:00,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:00,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:00,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:00,649 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:00,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:00,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:00,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:00,669 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:00,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 23:22:00,670 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 [2021-10-28 23:22:00,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:00,678 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:00,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:00,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:00,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:00,678 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:00,678 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:00,679 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:00,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:00,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:00,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:00,700 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:00,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 23:22:00,702 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 [2021-10-28 23:22:00,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:00,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:00,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:00,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:00,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:00,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:00,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:00,712 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:00,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:00,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:00,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:00,733 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:00,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 23:22:00,735 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 [2021-10-28 23:22:00,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:00,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:00,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:00,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:00,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:00,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:00,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:00,755 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:00,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:00,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:00,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:00,775 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:00,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 23:22:00,777 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 [2021-10-28 23:22:00,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:00,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:00,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:00,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:00,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:00,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:00,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:00,816 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:00,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:00,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:00,846 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:00,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 23:22:00,847 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 [2021-10-28 23:22:00,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:00,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:00,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:00,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:00,855 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:22:00,855 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:22:00,858 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:00,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:00,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:00,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:00,878 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:00,879 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 [2021-10-28 23:22:00,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 23:22:00,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:00,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:00,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:00,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:00,888 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:22:00,888 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:22:00,890 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:00,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:00,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:00,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:00,911 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:00,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-28 23:22:00,912 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 [2021-10-28 23:22:00,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:00,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:00,922 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:22:00,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:00,965 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-28 23:22:00,965 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-28 23:22:01,161 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:22:01,709 INFO L443 ModelExtractionUtils]: Simplification made 54 calls to the SMT solver. [2021-10-28 23:22:01,709 INFO L444 ModelExtractionUtils]: 63 out of 136 variables were initially zero. Simplification set additionally 70 variables to zero. [2021-10-28 23:22:01,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:01,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:01,717 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:01,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 23:22:01,718 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:22:01,735 INFO L438 nArgumentSynthesizer]: Removed 4 redundant supporting invariants from a total of 4. [2021-10-28 23:22:01,735 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:22:01,735 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrlen_~s~0.base)_3, ULTIMATE.start_cstrncmp_~s2.offset) = 1*v_rep(select #length ULTIMATE.start_cstrlen_~s~0.base)_3 - 1*ULTIMATE.start_cstrncmp_~s2.offset Supporting invariants [] [2021-10-28 23:22:01,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:01,998 INFO L297 tatePredicateManager]: 51 out of 53 supporting invariants were superfluous and have been removed [2021-10-28 23:22:02,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:02,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 23:22:02,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:02,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:02,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:22:02,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:02,534 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 2 loop predicates [2021-10-28 23:22:02,535 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 99 transitions. cyclomatic complexity: 19 Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2021-10-28 23:22:02,658 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 99 transitions. cyclomatic complexity: 19. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 115 states and 130 transitions. Complement of second has 9 states. [2021-10-28 23:22:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 5 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:22:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2021-10-28 23:22:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 35 transitions. [2021-10-28 23:22:02,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 40 letters. Loop has 5 letters. [2021-10-28 23:22:02,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:22:02,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 45 letters. Loop has 5 letters. [2021-10-28 23:22:02,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:22:02,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 40 letters. Loop has 10 letters. [2021-10-28 23:22:02,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:22:02,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 130 transitions. [2021-10-28 23:22:02,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:22:02,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 98 states and 112 transitions. [2021-10-28 23:22:02,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-10-28 23:22:02,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-28 23:22:02,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 112 transitions. [2021-10-28 23:22:02,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:22:02,667 INFO L681 BuchiCegarLoop]: Abstraction has 98 states and 112 transitions. [2021-10-28 23:22:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 112 transitions. [2021-10-28 23:22:02,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-10-28 23:22:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 89 states have internal predecessors, (103), 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) [2021-10-28 23:22:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-10-28 23:22:02,675 INFO L704 BuchiCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-10-28 23:22:02,675 INFO L587 BuchiCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-10-28 23:22:02,675 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-28 23:22:02,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 103 transitions. [2021-10-28 23:22:02,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:22:02,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:22:02,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:22:02,677 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:02,678 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:22:02,679 INFO L791 eck$LassoCheckResult]: Stem: 3582#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3551#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 3552#L555 assume !(main_~length1~0 < 1); 3584#L555-2 assume !(main_~length2~0 < 1); 3545#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 3546#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3578#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3579#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3589#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3626#L564-3 assume !(main_~i~0 < main_~length1~0); 3583#L564-4 main_~i~1 := 0; 3566#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3567#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3568#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3569#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3618#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3616#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3614#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3612#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3611#L568-3 assume !(main_~i~1 < main_~length2~0); 3580#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 3581#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 3607#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3591#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3592#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3564#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3565#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3598#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3599#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3590#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3547#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 3548#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 3570#L542-4 goto; 3571#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 3605#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 3604#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 3603#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 3602#L525 assume !(0 == cstrncmp_~n); 3577#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 3560#L528 assume cstrncmp_#t~mem6 != cstrncmp_#t~mem7;havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;call cstrncmp_#t~mem9 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;call cstrncmp_#t~mem10 := read~int(cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, 1);cstrncmp_#res := cstrncmp_#t~mem9 % 256 - cstrncmp_#t~mem10 % 256;havoc cstrncmp_#t~mem9;havoc cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset;havoc cstrncmp_#t~mem10; 3561#L533 cstrstr_#t~ret16 := cstrncmp_#res; 3557#L542-2 assume !!(0 != cstrstr_#t~ret16);havoc cstrstr_#t~ret16; 3558#L542-4 goto; 3572#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 3593#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 3573#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 3574#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 3537#L525 assume !(0 == cstrncmp_~n); 3538#L527-4 [2021-10-28 23:22:02,680 INFO L793 eck$LassoCheckResult]: Loop: 3538#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 3559#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 3555#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 3541#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 3542#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 3538#L527-4 [2021-10-28 23:22:02,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:02,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1314272625, now seen corresponding path program 1 times [2021-10-28 23:22:02,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:02,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853103643] [2021-10-28 23:22:02,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:02,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-28 23:22:03,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:03,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853103643] [2021-10-28 23:22:03,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853103643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:22:03,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355317658] [2021-10-28 23:22:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:03,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:22:03,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:03,127 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:22:03,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-28 23:22:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:03,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-28 23:22:03,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:03,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-28 23:22:03,716 INFO L354 Elim1Store]: treesize reduction 40, result has 20.0 percent of original size [2021-10-28 23:22:03,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31 [2021-10-28 23:22:04,657 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-10-28 23:22:04,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 23 [2021-10-28 23:22:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-28 23:22:04,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355317658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:22:04,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:22:04,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-28 23:22:04,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644652091] [2021-10-28 23:22:04,702 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:22:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 5 times [2021-10-28 23:22:04,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:04,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390465834] [2021-10-28 23:22:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:04,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:04,710 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:04,714 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:04,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:04,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 23:22:04,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:22:04,872 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. cyclomatic complexity: 21 Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 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) [2021-10-28 23:22:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:05,666 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2021-10-28 23:22:05,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:22:05,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 110 transitions. [2021-10-28 23:22:05,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:22:05,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 62 states and 71 transitions. [2021-10-28 23:22:05,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 23:22:05,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 23:22:05,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2021-10-28 23:22:05,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:22:05,668 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-10-28 23:22:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2021-10-28 23:22:05,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-10-28 23:22:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 60 states have (on average 1.15) internal successors, (69), 59 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2021-10-28 23:22:05,670 INFO L704 BuchiCegarLoop]: Abstraction has 60 states and 69 transitions. [2021-10-28 23:22:05,671 INFO L587 BuchiCegarLoop]: Abstraction has 60 states and 69 transitions. [2021-10-28 23:22:05,671 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-28 23:22:05,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 69 transitions. [2021-10-28 23:22:05,671 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:22:05,671 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:22:05,671 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:22:05,672 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:05,672 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:22:05,672 INFO L791 eck$LassoCheckResult]: Stem: 3952#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3924#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 3925#L555 assume !(main_~length1~0 < 1); 3954#L555-2 assume !(main_~length2~0 < 1); 3920#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 3921#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3957#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3969#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3948#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3949#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3958#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3962#L564-3 assume !(main_~i~0 < main_~length1~0); 3953#L564-4 main_~i~1 := 0; 3940#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3941#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3942#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3943#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3968#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3967#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3966#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3965#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3964#L568-3 assume !(main_~i~1 < main_~length2~0); 3950#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 3951#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 3934#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3935#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3956#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3936#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3937#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3961#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3960#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3959#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3918#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 3919#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 3926#L542-4 goto; 3938#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 3922#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 3923#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 3947#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 3912#L525 assume !(0 == cstrncmp_~n); 3913#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 3932#L528 assume cstrncmp_#t~mem6 != cstrncmp_#t~mem7;havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;call cstrncmp_#t~mem9 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;call cstrncmp_#t~mem10 := read~int(cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, 1);cstrncmp_#res := cstrncmp_#t~mem9 % 256 - cstrncmp_#t~mem10 % 256;havoc cstrncmp_#t~mem9;havoc cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset;havoc cstrncmp_#t~mem10; 3933#L533 cstrstr_#t~ret16 := cstrncmp_#res; 3929#L542-2 assume !!(0 != cstrstr_#t~ret16);havoc cstrstr_#t~ret16; 3930#L542-4 goto; 3939#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 3963#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 3944#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 3945#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 3910#L525 assume !(0 == cstrncmp_~n); 3911#L527-4 [2021-10-28 23:22:05,673 INFO L793 eck$LassoCheckResult]: Loop: 3911#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 3931#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 3927#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 3914#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 3915#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 3911#L527-4 [2021-10-28 23:22:05,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:05,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1519050033, now seen corresponding path program 2 times [2021-10-28 23:22:05,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:05,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71454366] [2021-10-28 23:22:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:05,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:05,732 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:05,762 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:05,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:05,762 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 6 times [2021-10-28 23:22:05,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:05,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915927756] [2021-10-28 23:22:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:05,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:05,791 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:05,794 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:05,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:05,795 INFO L85 PathProgramCache]: Analyzing trace with hash -419005351, now seen corresponding path program 1 times [2021-10-28 23:22:05,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:05,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135613339] [2021-10-28 23:22:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:05,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-28 23:22:06,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:06,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135613339] [2021-10-28 23:22:06,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135613339] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:22:06,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894360954] [2021-10-28 23:22:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:06,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:22:06,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:06,117 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:22:06,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-28 23:22:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:06,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-28 23:22:06,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:06,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-28 23:22:06,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-10-28 23:22:07,884 INFO L354 Elim1Store]: treesize reduction 35, result has 10.3 percent of original size [2021-10-28 23:22:07,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 25 [2021-10-28 23:22:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-28 23:22:07,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894360954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:22:07,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:22:07,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 25 [2021-10-28 23:22:07,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989154070] [2021-10-28 23:22:08,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 23:22:08,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-10-28 23:22:08,085 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. cyclomatic complexity: 15 Second operand has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 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) [2021-10-28 23:22:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:09,095 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2021-10-28 23:22:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 23:22:09,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 172 transitions. [2021-10-28 23:22:09,097 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-10-28 23:22:09,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 145 states and 167 transitions. [2021-10-28 23:22:09,098 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-28 23:22:09,098 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-28 23:22:09,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 167 transitions. [2021-10-28 23:22:09,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:22:09,099 INFO L681 BuchiCegarLoop]: Abstraction has 145 states and 167 transitions. [2021-10-28 23:22:09,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 167 transitions. [2021-10-28 23:22:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 108. [2021-10-28 23:22:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 108 states have (on average 1.1481481481481481) internal successors, (124), 107 states have internal predecessors, (124), 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) [2021-10-28 23:22:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-10-28 23:22:09,103 INFO L704 BuchiCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-10-28 23:22:09,103 INFO L587 BuchiCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-10-28 23:22:09,103 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-28 23:22:09,103 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 108 states and 124 transitions. [2021-10-28 23:22:09,104 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:22:09,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:22:09,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:22:09,105 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:09,105 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 23:22:09,105 INFO L791 eck$LassoCheckResult]: Stem: 4386#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 4356#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 4357#L555 assume !(main_~length1~0 < 1); 4388#L555-2 assume !(main_~length2~0 < 1); 4350#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 4351#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 4382#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 4383#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 4392#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 4408#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 4405#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 4403#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 4404#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 4449#L564-3 assume !(main_~i~0 < main_~length1~0); 4448#L564-4 main_~i~1 := 0; 4447#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 4446#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 4445#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 4444#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 4443#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 4442#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 4441#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 4440#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 4439#L568-3 assume !(main_~i~1 < main_~length2~0); 4438#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 4437#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 4436#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 4435#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 4434#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 4433#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 4395#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 4432#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 4394#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 4393#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 4352#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 4353#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 4358#L542-4 goto; 4389#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 4354#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 4355#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 4380#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 4344#L525 assume !(0 == cstrncmp_~n); 4345#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 4407#L528 assume cstrncmp_#t~mem6 != cstrncmp_#t~mem7;havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;call cstrncmp_#t~mem9 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;call cstrncmp_#t~mem10 := read~int(cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, 1);cstrncmp_#res := cstrncmp_#t~mem9 % 256 - cstrncmp_#t~mem10 % 256;havoc cstrncmp_#t~mem9;havoc cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset;havoc cstrncmp_#t~mem10; 4365#L533 cstrstr_#t~ret16 := cstrncmp_#res; 4361#L542-2 assume !!(0 != cstrstr_#t~ret16);havoc cstrstr_#t~ret16; 4362#L542-4 goto; 4376#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 4406#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 4377#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 4378#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 4342#L525 assume !(0 == cstrncmp_~n); 4343#L527-4 [2021-10-28 23:22:09,105 INFO L793 eck$LassoCheckResult]: Loop: 4343#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 4363#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 4359#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 4346#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 4347#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 4343#L527-4 [2021-10-28 23:22:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:09,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1332858707, now seen corresponding path program 3 times [2021-10-28 23:22:09,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:09,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848916566] [2021-10-28 23:22:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:09,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:09,145 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:09,179 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 7 times [2021-10-28 23:22:09,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:09,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967218750] [2021-10-28 23:22:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:09,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:09,187 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:09,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:09,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:09,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1922995909, now seen corresponding path program 2 times [2021-10-28 23:22:09,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:09,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177210213] [2021-10-28 23:22:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:09,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:09,222 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:09,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:27,403 WARN L207 SmtUtils]: Spent 17.95 s on a formula simplification. DAG size of input: 446 DAG size of output: 341 [2021-10-28 23:22:29,185 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:22:29,185 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:22:29,185 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:22:29,185 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:22:29,185 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:22:29,185 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:29,185 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:22:29,185 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:22:29,185 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration18_Lasso [2021-10-28 23:22:29,185 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:22:29,185 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:22:29,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:29,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:31,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:22:33,079 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:22:33,080 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:22:33,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,087 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 23:22:33,088 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 [2021-10-28 23:22:33,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,096 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,097 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,118 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 23:22:33,119 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 [2021-10-28 23:22:33,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,127 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,147 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-28 23:22:33,148 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 [2021-10-28 23:22:33,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,156 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,156 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,157 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,177 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,178 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 [2021-10-28 23:22:33,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 23:22:33,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,187 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,207 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 23:22:33,208 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 [2021-10-28 23:22:33,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,215 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,216 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,217 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,237 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-28 23:22:33,240 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 [2021-10-28 23:22:33,247 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,247 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,247 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,247 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,248 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,248 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,272 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,294 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 23:22:33,296 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 [2021-10-28 23:22:33,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,304 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,325 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-10-28 23:22:33,326 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 [2021-10-28 23:22:33,333 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,333 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,334 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,364 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,417 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,418 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,425 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 [2021-10-28 23:22:33,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,434 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,434 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,436 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:22:33,436 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:22:33,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-10-28 23:22:33,456 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,495 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,496 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 [2021-10-28 23:22:33,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,506 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,506 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-10-28 23:22:33,520 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,558 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,560 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 [2021-10-28 23:22:33,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-28 23:22:33,583 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,623 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,625 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 [2021-10-28 23:22:33,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-28 23:22:33,656 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,694 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,695 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 [2021-10-28 23:22:33,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,705 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,705 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-28 23:22:33,720 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2021-10-28 23:22:33,752 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,753 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-28 23:22:33,754 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 [2021-10-28 23:22:33,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,762 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,762 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,762 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2021-10-28 23:22:33,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,782 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-28 23:22:33,784 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 [2021-10-28 23:22:33,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,791 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,792 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,816 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-10-28 23:22:33,817 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 [2021-10-28 23:22:33,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,824 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,824 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,825 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2021-10-28 23:22:33,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,845 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-10-28 23:22:33,846 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 [2021-10-28 23:22:33,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,854 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:22:33,854 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:22:33,856 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2021-10-28 23:22:33,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,875 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-10-28 23:22:33,876 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 [2021-10-28 23:22:33,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,883 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,884 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,884 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,885 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:33,904 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,904 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2021-10-28 23:22:33,905 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 [2021-10-28 23:22:33,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,913 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,913 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,914 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2021-10-28 23:22:33,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,934 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-28 23:22:33,935 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 [2021-10-28 23:22:33,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:22:33,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:33,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,942 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:22:33,942 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:22:33,943 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2021-10-28 23:22:33,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,963 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-28 23:22:33,964 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 [2021-10-28 23:22:33,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:33,971 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2021-10-28 23:22:33,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:33,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:33,972 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-10-28 23:22:33,972 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:22:33,975 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:33,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2021-10-28 23:22:33,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:33,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:33,995 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:33,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-28 23:22:33,996 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 [2021-10-28 23:22:34,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:34,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:34,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:22:34,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:34,005 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:22:34,005 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:22:34,007 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:22:34,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2021-10-28 23:22:34,027 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:34,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:34,027 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:34,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-28 23:22:34,029 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 [2021-10-28 23:22:34,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:22:34,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:22:34,037 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:22:34,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:22:34,095 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-28 23:22:34,095 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-28 23:22:34,252 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:22:34,485 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2021-10-28 23:22:34,485 INFO L444 ModelExtractionUtils]: 71 out of 151 variables were initially zero. Simplification set additionally 77 variables to zero. [2021-10-28 23:22:34,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:34,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:34,486 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:34,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-28 23:22:34,487 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:22:34,497 INFO L438 nArgumentSynthesizer]: Removed 4 redundant supporting invariants from a total of 4. [2021-10-28 23:22:34,497 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:22:34,498 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc23.base)_6, ULTIMATE.start_cstrncmp_~s2.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc23.base)_6 - 1*ULTIMATE.start_cstrncmp_~s2.offset Supporting invariants [] [2021-10-28 23:22:34,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:34,888 INFO L297 tatePredicateManager]: 71 out of 72 supporting invariants were superfluous and have been removed [2021-10-28 23:22:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:34,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:22:34,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:35,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:22:35,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:35,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:35,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:35,375 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2021-10-28 23:22:35,375 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25 Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:35,442 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 129 states and 146 transitions. Complement of second has 8 states. [2021-10-28 23:22:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 4 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:22:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 35 transitions. [2021-10-28 23:22:35,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 35 transitions. Stem has 52 letters. Loop has 5 letters. [2021-10-28 23:22:35,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:22:35,450 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:22:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:35,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:22:35,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:35,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:22:35,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:35,899 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 2 loop predicates [2021-10-28 23:22:35,899 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25 Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:35,977 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 153 states and 175 transitions. Complement of second has 10 states. [2021-10-28 23:22:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:22:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 42 transitions. [2021-10-28 23:22:35,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 42 transitions. Stem has 52 letters. Loop has 5 letters. [2021-10-28 23:22:35,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:22:35,981 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:22:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:36,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:22:36,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:36,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:22:36,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:36,467 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2021-10-28 23:22:36,467 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25 Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:36,551 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 125 states and 141 transitions. Complement of second has 7 states. [2021-10-28 23:22:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 4 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:22:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 50 transitions. [2021-10-28 23:22:36,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 50 transitions. Stem has 52 letters. Loop has 5 letters. [2021-10-28 23:22:36,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:22:36,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 50 transitions. Stem has 57 letters. Loop has 5 letters. [2021-10-28 23:22:36,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:22:36,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 50 transitions. Stem has 52 letters. Loop has 10 letters. [2021-10-28 23:22:36,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:22:36,554 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 141 transitions. [2021-10-28 23:22:36,555 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:22:36,555 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 0 states and 0 transitions. [2021-10-28 23:22:36,555 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:22:36,555 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:22:36,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:22:36,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:22:36,556 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:22:36,556 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:22:36,556 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:22:36,556 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-28 23:22:36,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:22:36,556 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:22:36,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:22:36,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:22:36 BoogieIcfgContainer [2021-10-28 23:22:36,563 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:22:36,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:22:36,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:22:36,563 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:22:36,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:17:54" (3/4) ... [2021-10-28 23:22:36,566 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:22:36,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:22:36,567 INFO L168 Benchmark]: Toolchain (without parser) took 283518.90 ms. Allocated memory was 96.5 MB in the beginning and 264.2 MB in the end (delta: 167.8 MB). Free memory was 64.4 MB in the beginning and 108.5 MB in the end (delta: -44.2 MB). Peak memory consumption was 125.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:36,567 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory is still 40.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:22:36,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.73 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 48.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:36,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.26 ms. Allocated memory is still 96.5 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:36,568 INFO L168 Benchmark]: Boogie Preprocessor took 39.65 ms. Allocated memory is still 96.5 MB. Free memory was 46.0 MB in the beginning and 44.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:22:36,568 INFO L168 Benchmark]: RCFGBuilder took 550.80 ms. Allocated memory is still 96.5 MB. Free memory was 44.4 MB in the beginning and 62.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:36,569 INFO L168 Benchmark]: BuchiAutomizer took 282318.65 ms. Allocated memory was 96.5 MB in the beginning and 264.2 MB in the end (delta: 167.8 MB). Free memory was 62.6 MB in the beginning and 109.6 MB in the end (delta: -47.0 MB). Peak memory consumption was 120.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:36,569 INFO L168 Benchmark]: Witness Printer took 3.01 ms. Allocated memory is still 264.2 MB. Free memory was 109.6 MB in the beginning and 108.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:36,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory is still 40.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 536.73 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 48.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.26 ms. Allocated memory is still 96.5 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.65 ms. Allocated memory is still 96.5 MB. Free memory was 46.0 MB in the beginning and 44.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 550.80 ms. Allocated memory is still 96.5 MB. Free memory was 44.4 MB in the beginning and 62.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 282318.65 ms. Allocated memory was 96.5 MB in the beginning and 264.2 MB in the end (delta: 167.8 MB). Free memory was 62.6 MB in the beginning and 109.6 MB in the end (delta: -47.0 MB). Peak memory consumption was 120.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.01 ms. Allocated memory is still 264.2 MB. Free memory was 109.6 MB in the beginning and 108.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 18 terminating modules (12 trivial, 5 deterministic, 1 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[nondetString1] + -1 * i and consists of 5 locations. One deterministic module has affine ranking function length2 + -1 * i and consists of 4 locations. One deterministic module has affine ranking function unknown-#length-unknown[nondetString2] + -1 * s and consists of 4 locations. One deterministic module has affine ranking function unknown-#length-unknown[s] + -1 * s and consists of 3 locations. One deterministic module has affine ranking function unknown-#length-unknown[s] + -1 * s2 and consists of 7 locations. One nondeterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] + -1 * s2 and consists of 6 locations. 12 modules have a trivial ranking function, the largest among these consists of 31 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 282.2s and 19 iterations. TraceHistogramMax:4. Analysis of lassos took 112.2s. Construction of modules took 2.5s. Büchi inclusion checks took 167.1s. Highest rank in rank-based complementation 3. Minimization of det autom 7. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 155 StatesRemovedByMinimization, 13 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 108 states and ocurred in iteration 17. Nontrivial modules had stage [5, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 648 SDtfs, 1637 SDslu, 3351 SDs, 0 SdLazy, 2181 SolverSat, 220 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.5s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc6 concLT0 SILN0 SILU5 SILI0 SILT0 lasso6 LassoPreprocessingBenchmarks: Lassos: inital404 mio100 ax106 hnf99 lsp90 ukn60 mio100 lsp52 div100 bol100 ite100 ukn100 eq192 hnf89 smp93 dnf134 smp91 tf100 neg99 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 825ms VariablesStem: 26 VariablesLoop: 19 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 23:22:36,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:36,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-28 23:22:37,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-28 23:22:37,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-28 23:22:37,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-28 23:22:37,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-28 23:22:37,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-28 23:22:38,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-28 23:22:38,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-28 23:22:38,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ba45b6-3d9b-454c-a018-f11f6da005ad/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...