./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be --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 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:25:24,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:25:24,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:25:24,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:25:24,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:25:24,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:25:24,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:25:24,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:25:24,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:25:24,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:25:24,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:25:24,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:25:24,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:25:24,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:25:24,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:25:24,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:25:24,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:25:24,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:25:24,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:25:24,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:25:24,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:25:24,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:25:24,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:25:24,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:25:24,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:25:24,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:25:24,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:25:24,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:25:24,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:25:24,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:25:24,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:25:24,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:25:24,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:25:24,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:25:24,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:25:24,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:25:24,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:25:24,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:25:24,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:25:24,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:25:24,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:25:24,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 20:25:24,822 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:25:24,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:25:24,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:25:24,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:25:24,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:25:24,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:25:24,832 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:25:24,833 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:25:24,833 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:25:24,833 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:25:24,835 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:25:24,835 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:25:24,835 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:25:24,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:25:24,836 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:25:24,836 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:25:24,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:25:24,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:25:24,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:25:24,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:25:24,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:25:24,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:25:24,838 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:25:24,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:25:24,838 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:25:24,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:25:24,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:25:24,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:25:24,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:25:24,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:25:24,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:25:24,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:25:24,844 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:25:24,845 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_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a [2021-10-21 20:25:25,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:25:25,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:25:25,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:25:25,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:25:25,206 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:25:25,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loop-new/nested-1.i [2021-10-21 20:25:25,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/data/9a579bff0/f760bfa83629439f8d9dd097a469cf73/FLAG98fb99e86 [2021-10-21 20:25:25,931 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:25:25,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/sv-benchmarks/c/loop-new/nested-1.i [2021-10-21 20:25:25,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/data/9a579bff0/f760bfa83629439f8d9dd097a469cf73/FLAG98fb99e86 [2021-10-21 20:25:26,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/data/9a579bff0/f760bfa83629439f8d9dd097a469cf73 [2021-10-21 20:25:26,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:25:26,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:25:26,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:25:26,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:25:26,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:25:26,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31839441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26, skipping insertion in model container [2021-10-21 20:25:26,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:25:26,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:25:26,557 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-21 20:25:26,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:25:26,577 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:25:26,592 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-21 20:25:26,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:25:26,613 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:25:26,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26 WrapperNode [2021-10-21 20:25:26,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:25:26,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:25:26,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:25:26,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:25:26,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:25:26,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:25:26,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:25:26,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:25:26,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:25:26,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:25:26,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:25:26,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:25:26,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (1/1) ... [2021-10-21 20:25:26,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:26,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:26,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:26,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:25:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:25:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:25:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:25:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:25:26,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:25:26,998 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 20:25:27,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:25:27 BoogieIcfgContainer [2021-10-21 20:25:27,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:25:27,009 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:25:27,010 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:25:27,013 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:25:27,014 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:25:27,015 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:25:26" (1/3) ... [2021-10-21 20:25:27,028 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@679705c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:25:27, skipping insertion in model container [2021-10-21 20:25:27,028 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:25:27,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:26" (2/3) ... [2021-10-21 20:25:27,029 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@679705c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:25:27, skipping insertion in model container [2021-10-21 20:25:27,029 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:25:27,029 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:25:27" (3/3) ... [2021-10-21 20:25:27,031 INFO L389 chiAutomizerObserver]: Analyzing ICFG nested-1.i [2021-10-21 20:25:27,124 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:25:27,125 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:25:27,125 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:25:27,125 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:25:27,125 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:25:27,125 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:25:27,125 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:25:27,125 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:25:27,142 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 20:25:27,165 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:25:27,165 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:25:27,172 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 20:25:27,172 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 20:25:27,172 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:25:27,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 20:25:27,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:25:27,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:25:27,176 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 20:25:27,176 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 20:25:27,184 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 7#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 6#L29true assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 5#L30true assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 9#L31-3true [2021-10-21 20:25:27,184 INFO L793 eck$LassoCheckResult]: Loop: 9#L31-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 13#L32-3true assume !true; 15#L31-2true main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 9#L31-3true [2021-10-21 20:25:27,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:27,191 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-10-21 20:25:27,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:27,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623185448] [2021-10-21 20:25:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:27,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:27,364 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:25:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:27,417 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:25:27,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:27,420 INFO L82 PathProgramCache]: Analyzing trace with hash 50037, now seen corresponding path program 1 times [2021-10-21 20:25:27,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:27,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154517649] [2021-10-21 20:25:27,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:27,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:27,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:27,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154517649] [2021-10-21 20:25:27,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154517649] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:25:27,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:25:27,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:25:27,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706046360] [2021-10-21 20:25:27,478 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:25:27,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:25:27,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:25:27,498 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:27,505 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-21 20:25:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:25:27,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-10-21 20:25:27,509 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 20:25:27,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 8 states and 9 transitions. [2021-10-21 20:25:27,514 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-21 20:25:27,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-21 20:25:27,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-10-21 20:25:27,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:27,515 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-21 20:25:27,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-10-21 20:25:27,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-21 20:25:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-21 20:25:27,543 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-21 20:25:27,543 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-21 20:25:27,544 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:25:27,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2021-10-21 20:25:27,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 20:25:27,545 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:25:27,545 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:25:27,545 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 20:25:27,545 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 20:25:27,546 INFO L791 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 41#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 45#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 42#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 43#L31-3 [2021-10-21 20:25:27,546 INFO L793 eck$LassoCheckResult]: Loop: 43#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 39#L32-3 assume !(main_~j~0 < main_~m~0); 44#L31-2 main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 43#L31-3 [2021-10-21 20:25:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:27,547 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2021-10-21 20:25:27,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:27,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541848777] [2021-10-21 20:25:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:27,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:27,563 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:25:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:27,583 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:25:27,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:27,590 INFO L82 PathProgramCache]: Analyzing trace with hash 49851, now seen corresponding path program 1 times [2021-10-21 20:25:27,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:27,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201631488] [2021-10-21 20:25:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:27,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:27,599 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:25:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:27,606 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:25:27,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:27,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1806910836, now seen corresponding path program 1 times [2021-10-21 20:25:27,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:27,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2283171] [2021-10-21 20:25:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:27,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:27,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:27,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2283171] [2021-10-21 20:25:27,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2283171] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:25:27,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:25:27,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:25:27,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376902019] [2021-10-21 20:25:27,817 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:25:27,817 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:25:27,818 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:25:27,818 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:25:27,818 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:25:27,818 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:27,818 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:25:27,818 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:25:27,819 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2021-10-21 20:25:27,819 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:25:27,819 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:25:27,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:27,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:27,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:27,929 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:25:27,929 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:25:27,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:27,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:27,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:27,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:25:27,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:25:27,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 20:25:27,975 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:25:27,976 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:25:27,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-21 20:25:27,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:27,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:27,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:28,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 20:25:28,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:25:28,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:25:28,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:28,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:28,047 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:28,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 20:25:28,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:25:28,052 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:25:28,228 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:25:28,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:28,232 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:25:28,232 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:25:28,232 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:25:28,232 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:25:28,232 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:25:28,232 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:28,232 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:25:28,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:25:28,233 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2021-10-21 20:25:28,233 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:25:28,233 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:25:28,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:28,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:28,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:28,331 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:25:28,338 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:25:28,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:28,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:28,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:28,351 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 [2021-10-21 20:25:28,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 20:25:28,361 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:25:28,361 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:25:28,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:25:28,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:25:28,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:25:28,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:25:28,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:25:28,381 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:25:28,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:28,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:28,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:28,406 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:28,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 20:25:28,408 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 [2021-10-21 20:25:28,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:25:28,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:25:28,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:25:28,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:25:28,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:25:28,419 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:25:28,419 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:25:28,425 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:25:28,431 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 20:25:28,431 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:25:28,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:28,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:28,436 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:28,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 20:25:28,465 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:25:28,465 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:25:28,466 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:25:28,466 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-21 20:25:28,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:28,498 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:25:28,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:28,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:25:28,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:28,579 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:25:28,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:28,618 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 [2021-10-21 20:25:28,619 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:28,652 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 17 transitions. Complement of second has 4 states. [2021-10-21 20:25:28,653 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 [2021-10-21 20:25:28,654 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) [2021-10-21 20:25:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-21 20:25:28,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-21 20:25:28,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:28,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-21 20:25:28,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:28,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-21 20:25:28,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:28,659 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2021-10-21 20:25:28,660 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:25:28,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 15 transitions. [2021-10-21 20:25:28,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-21 20:25:28,662 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-21 20:25:28,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2021-10-21 20:25:28,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:25:28,662 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-21 20:25:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2021-10-21 20:25:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-21 20:25:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-10-21 20:25:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-10-21 20:25:28,665 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-21 20:25:28,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:28,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:25:28,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:25:28,667 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:28,682 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-21 20:25:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:25:28,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-10-21 20:25:28,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:25:28,685 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2021-10-21 20:25:28,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-21 20:25:28,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-21 20:25:28,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2021-10-21 20:25:28,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:25:28,686 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-21 20:25:28,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2021-10-21 20:25:28,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2021-10-21 20:25:28,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-10-21 20:25:28,689 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-21 20:25:28,689 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-21 20:25:28,689 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:25:28,690 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2021-10-21 20:25:28,690 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:25:28,690 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:25:28,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:25:28,691 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-21 20:25:28,691 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 20:25:28,691 INFO L791 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 133#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 137#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 134#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 135#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 129#L32-3 [2021-10-21 20:25:28,692 INFO L793 eck$LassoCheckResult]: Loop: 129#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 128#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 129#L32-3 [2021-10-21 20:25:28,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:28,692 INFO L82 PathProgramCache]: Analyzing trace with hash 28695852, now seen corresponding path program 1 times [2021-10-21 20:25:28,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:28,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506406801] [2021-10-21 20:25:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:28,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:28,711 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:25:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:28,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:25:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:28,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1859, now seen corresponding path program 1 times [2021-10-21 20:25:28,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:28,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402058131] [2021-10-21 20:25:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:28,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:28,732 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:25:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:28,737 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:25:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:28,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1806910894, now seen corresponding path program 1 times [2021-10-21 20:25:28,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:28,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294289747] [2021-10-21 20:25:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:28,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:28,752 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:25:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:28,770 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:25:28,794 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:25:28,794 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:25:28,794 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:25:28,794 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:25:28,794 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:25:28,795 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:28,795 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:25:28,795 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:25:28,795 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2021-10-21 20:25:28,795 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:25:28,795 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:25:28,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:28,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:28,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:28,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:28,847 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:25:28,847 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:25:28,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:28,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:28,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:28,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:25:28,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:25:28,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 20:25:28,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-21 20:25:28,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:28,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:28,915 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:28,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:25:28,918 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:25:28,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 20:25:29,089 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:25:29,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:29,092 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:25:29,092 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:25:29,092 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:25:29,092 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:25:29,092 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:25:29,092 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:29,092 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:25:29,092 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:25:29,092 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2021-10-21 20:25:29,092 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:25:29,092 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:25:29,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:29,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:29,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:29,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:29,173 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:25:29,173 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:25:29,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:29,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:29,175 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:29,182 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 [2021-10-21 20:25:29,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:25:29,192 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:25:29,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:25:29,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:25:29,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:25:29,200 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:25:29,200 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:25:29,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 20:25:29,212 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:25:29,220 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 20:25:29,220 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:25:29,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:29,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:29,229 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:29,236 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:25:29,237 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:25:29,237 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:25:29,237 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-21 20:25:29,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 20:25:29,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:29,280 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:25:29,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:29,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:25:29,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:29,335 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:25:29,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:29,374 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 [2021-10-21 20:25:29,374 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 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) [2021-10-21 20:25:29,391 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. 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 24 states and 31 transitions. Complement of second has 7 states. [2021-10-21 20:25:29,391 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 [2021-10-21 20:25:29,392 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) [2021-10-21 20:25:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-21 20:25:29,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-21 20:25:29,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:29,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2021-10-21 20:25:29,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:29,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-21 20:25:29,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:29,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-10-21 20:25:29,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:25:29,397 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 17 states and 21 transitions. [2021-10-21 20:25:29,397 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-21 20:25:29,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-21 20:25:29,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2021-10-21 20:25:29,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:25:29,397 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-21 20:25:29,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2021-10-21 20:25:29,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-10-21 20:25:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-10-21 20:25:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-21 20:25:29,400 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-21 20:25:29,400 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-21 20:25:29,400 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:25:29,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2021-10-21 20:25:29,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 20:25:29,401 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:25:29,401 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:25:29,402 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:29,402 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 20:25:29,402 INFO L791 eck$LassoCheckResult]: Stem: 213#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 214#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 218#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 215#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 216#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 217#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 211#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 212#L32-3 assume !(main_~j~0 < main_~m~0); 219#L31-2 main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 220#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 210#L32-3 [2021-10-21 20:25:29,402 INFO L793 eck$LassoCheckResult]: Loop: 210#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 209#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 210#L32-3 [2021-10-21 20:25:29,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:29,403 INFO L82 PathProgramCache]: Analyzing trace with hash 857348446, now seen corresponding path program 1 times [2021-10-21 20:25:29,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:29,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933828860] [2021-10-21 20:25:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:29,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:29,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:29,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933828860] [2021-10-21 20:25:29,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933828860] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:29,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504910445] [2021-10-21 20:25:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:29,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:29,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:29,483 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:29,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 20:25:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:29,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:25:29,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:29,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504910445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:29,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:25:29,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-21 20:25:29,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439984600] [2021-10-21 20:25:29,644 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:25:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:29,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1859, now seen corresponding path program 2 times [2021-10-21 20:25:29,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:29,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678458099] [2021-10-21 20:25:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:29,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:29,660 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:25:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:25:29,664 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:25:29,700 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:25:29,700 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:25:29,700 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:25:29,700 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:25:29,700 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:25:29,701 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:29,701 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:25:29,701 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:25:29,701 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration4_Loop [2021-10-21 20:25:29,701 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:25:29,701 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:25:29,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:29,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:29,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:29,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:29,768 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:25:29,769 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:25:29,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:29,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:29,772 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:29,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:29,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 20:25:29,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:25:29,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:25:29,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:29,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:29,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:29,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:29,894 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:29,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 20:25:29,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:25:29,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:25:30,071 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:25:30,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-10-21 20:25:30,075 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:25:30,075 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:25:30,075 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:25:30,075 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:25:30,075 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:25:30,075 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:30,076 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:25:30,076 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:25:30,076 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration4_Loop [2021-10-21 20:25:30,076 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:25:30,076 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:25:30,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:30,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:30,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:30,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:25:30,128 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:25:30,128 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:25:30,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:30,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:30,129 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:30,137 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 [2021-10-21 20:25:30,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:25:30,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:25:30,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:25:30,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:25:30,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:25:30,149 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:25:30,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:25:30,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 20:25:30,159 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:25:30,170 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 20:25:30,170 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:25:30,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:25:30,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:30,172 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:30,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 20:25:30,175 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:25:30,175 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:25:30,176 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:25:30,176 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-21 20:25:30,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:30,216 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:25:30,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:30,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:25:30,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:30,300 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:25:30,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:30,325 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 [2021-10-21 20:25:30,326 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:30,357 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 25 transitions. Complement of second has 7 states. [2021-10-21 20:25:30,358 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 [2021-10-21 20:25:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-21 20:25:30,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2021-10-21 20:25:30,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:30,360 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:25:30,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:30,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:25:30,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:30,434 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:25:30,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:30,465 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-21 20:25:30,466 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:30,487 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 25 transitions. Complement of second has 7 states. [2021-10-21 20:25:30,487 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 [2021-10-21 20:25:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-21 20:25:30,488 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2021-10-21 20:25:30,489 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:30,489 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:25:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:30,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:25:30,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:30,556 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:25:30,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:30,582 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-21 20:25:30,582 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:30,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 21 transitions. Complement of second has 6 states. [2021-10-21 20:25:30,606 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 [2021-10-21 20:25:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-10-21 20:25:30,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2021-10-21 20:25:30,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:30,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2021-10-21 20:25:30,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:30,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2021-10-21 20:25:30,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:25:30,609 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2021-10-21 20:25:30,611 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:25:30,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2021-10-21 20:25:30,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 20:25:30,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 20:25:30,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 20:25:30,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:30,613 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:25:30,613 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:25:30,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:30,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:25:30,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:25:30,614 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-10-21 20:25:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:30,614 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-21 20:25:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:25:30,615 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-21 20:25:30,615 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:25:30,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:25:30,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 20:25:30,616 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 20:25:30,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 20:25:30,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:25:30,616 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:25:30,616 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:25:30,616 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:25:30,616 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 20:25:30,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:25:30,617 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:25:30,617 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 20:25:30,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:25:30 BoogieIcfgContainer [2021-10-21 20:25:30,625 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:25:30,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:25:30,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:25:30,626 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:25:30,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:25:27" (3/4) ... [2021-10-21 20:25:30,630 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:25:30,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:25:30,639 INFO L168 Benchmark]: Toolchain (without parser) took 4307.76 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 62.9 MB in the beginning and 61.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:30,640 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:25:30,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.39 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 62.6 MB in the beginning and 88.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:30,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.76 ms. Allocated memory is still 113.2 MB. Free memory was 88.4 MB in the beginning and 86.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:30,642 INFO L168 Benchmark]: Boogie Preprocessor took 23.02 ms. Allocated memory is still 113.2 MB. Free memory was 86.6 MB in the beginning and 85.7 MB in the end (delta: 934.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:30,644 INFO L168 Benchmark]: RCFGBuilder took 330.02 ms. Allocated memory is still 113.2 MB. Free memory was 85.7 MB in the beginning and 76.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:30,650 INFO L168 Benchmark]: BuchiAutomizer took 3615.65 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 61.2 MB in the end (delta: 14.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:30,650 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 113.2 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:25:30,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.39 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 62.6 MB in the beginning and 88.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.76 ms. Allocated memory is still 113.2 MB. Free memory was 88.4 MB in the beginning and 86.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.02 ms. Allocated memory is still 113.2 MB. Free memory was 86.6 MB in the beginning and 85.7 MB in the end (delta: 934.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 330.02 ms. Allocated memory is still 113.2 MB. Free memory was 85.7 MB in the beginning and 76.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3615.65 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 61.2 MB in the end (delta: 14.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.62 ms. Allocated memory is still 113.2 MB. Free memory is still 61.2 MB. There was no memory consumed. 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 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 3 locations. One deterministic module has affine ranking function m + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 19.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 63 SDtfs, 42 SDslu, 13 SDs, 0 SdLazy, 44 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.5ms Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 20:25:30,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:30,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:31,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfbbf56-eb9b-4f71-9780-3fbd9f8b350f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...