./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/id_build.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/id_build.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3 --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 8e693e301fe03afa61a3f7e2110361a5e60df7f9 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:01:34,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:01:34,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:01:34,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:01:34,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:01:34,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:01:34,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:01:34,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:01:34,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:01:34,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:01:34,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:01:34,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:01:34,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:01:34,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:01:34,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:01:34,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:01:34,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:01:34,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:01:34,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:01:34,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:01:34,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:01:34,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:01:34,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:01:34,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:01:34,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:01:34,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:01:34,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:01:34,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:01:34,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:01:34,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:01:34,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:01:34,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:01:34,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:01:34,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:01:34,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:01:34,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:01:34,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:01:34,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:01:34,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:01:34,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:01:34,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:01:34,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-15 20:01:34,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:01:34,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:01:34,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:01:34,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:01:34,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:01:34,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:01:34,246 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:01:34,246 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-15 20:01:34,246 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-15 20:01:34,247 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-15 20:01:34,248 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-15 20:01:34,248 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-15 20:01:34,248 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-15 20:01:34,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:01:34,249 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:01:34,249 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 20:01:34,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:01:34,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:01:34,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:01:34,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-15 20:01:34,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-15 20:01:34,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-15 20:01:34,251 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:01:34,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:01:34,251 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-15 20:01:34,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:01:34,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-15 20:01:34,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:01:34,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:01:34,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:01:34,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:01:34,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:01:34,256 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-15 20:01:34,256 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_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e693e301fe03afa61a3f7e2110361a5e60df7f9 [2021-10-15 20:01:34,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:01:34,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:01:34,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:01:34,577 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:01:34,577 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:01:34,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/loop-invgen/id_build.i [2021-10-15 20:01:34,661 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/data/cad699e80/660a468b2d094cd0871767df8ebac568/FLAGa4d4bb8a8 [2021-10-15 20:01:35,092 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:01:35,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/sv-benchmarks/c/loop-invgen/id_build.i [2021-10-15 20:01:35,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/data/cad699e80/660a468b2d094cd0871767df8ebac568/FLAGa4d4bb8a8 [2021-10-15 20:01:35,466 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/data/cad699e80/660a468b2d094cd0871767df8ebac568 [2021-10-15 20:01:35,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:01:35,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:01:35,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:01:35,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:01:35,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:01:35,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@884afa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35, skipping insertion in model container [2021-10-15 20:01:35,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:01:35,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:01:35,676 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_93842765-b88e-47cf-b0c5-facfcb991451/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-10-15 20:01:35,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:01:35,696 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:01:35,712 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_93842765-b88e-47cf-b0c5-facfcb991451/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-10-15 20:01:35,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:01:35,734 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:01:35,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35 WrapperNode [2021-10-15 20:01:35,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:01:35,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:01:35,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:01:35,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:01:35,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:01:35,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:01:35,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:01:35,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:01:35,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:01:35,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:01:35,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:01:35,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:01:35,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (1/1) ... [2021-10-15 20:01:35,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:35,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:35,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-15 20:01:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:01:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:01:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:01:35,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:01:36,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:01:36,078 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-15 20:01:36,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:01:36 BoogieIcfgContainer [2021-10-15 20:01:36,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:01:36,081 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-15 20:01:36,082 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-15 20:01:36,100 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-15 20:01:36,100 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:01:36,101 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 08:01:35" (1/3) ... [2021-10-15 20:01:36,102 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@220a2b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 08:01:36, skipping insertion in model container [2021-10-15 20:01:36,102 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:01:36,102 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:35" (2/3) ... [2021-10-15 20:01:36,102 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@220a2b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 08:01:36, skipping insertion in model container [2021-10-15 20:01:36,103 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:01:36,103 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:01:36" (3/3) ... [2021-10-15 20:01:36,104 INFO L389 chiAutomizerObserver]: Analyzing ICFG id_build.i [2021-10-15 20:01:36,147 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-15 20:01:36,148 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-15 20:01:36,148 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-15 20:01:36,148 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-15 20:01:36,148 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-15 20:01:36,148 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-15 20:01:36,148 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-15 20:01:36,149 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-15 20:01:36,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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) [2021-10-15 20:01:36,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-15 20:01:36,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:36,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:36,186 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:01:36,187 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-15 20:01:36,187 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-15 20:01:36,187 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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) [2021-10-15 20:01:36,189 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-15 20:01:36,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:36,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:36,190 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:01:36,190 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-15 20:01:36,197 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); 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 15#L27-3true [2021-10-15 20:01:36,197 INFO L793 eck$LassoCheckResult]: Loop: 15#L27-3true assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 8#L28-2true assume !(main_~j~0 < 8); 11#L27-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 15#L27-3true [2021-10-15 20:01:36,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:36,203 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-15 20:01:36,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:36,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185054629] [2021-10-15 20:01:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:36,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:36,364 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:36,418 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:36,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:36,422 INFO L82 PathProgramCache]: Analyzing trace with hash 39940, now seen corresponding path program 1 times [2021-10-15 20:01:36,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:36,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762662091] [2021-10-15 20:01:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:36,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:36,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:01:36,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762662091] [2021-10-15 20:01:36,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762662091] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:01:36,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:01:36,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:01:36,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011812854] [2021-10-15 20:01:36,521 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-15 20:01:36,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:01:36,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:01:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:01:36,543 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) 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) [2021-10-15 20:01:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:01:36,620 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-15 20:01:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:01:36,622 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 23 transitions. [2021-10-15 20:01:36,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-15 20:01:36,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 14 states and 15 transitions. [2021-10-15 20:01:36,628 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-15 20:01:36,629 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-15 20:01:36,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2021-10-15 20:01:36,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:01:36,630 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-15 20:01:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2021-10-15 20:01:36,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2021-10-15 20:01:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-15 20:01:36,655 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-15 20:01:36,655 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-15 20:01:36,655 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-15 20:01:36,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2021-10-15 20:01:36,656 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-15 20:01:36,656 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:36,656 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:36,657 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:01:36,657 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:01:36,657 INFO L791 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 49#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 53#L27-3 [2021-10-15 20:01:36,658 INFO L793 eck$LassoCheckResult]: Loop: 53#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 54#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 46#L18 assume !(0 == __VERIFIER_assert_~cond); 47#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 50#L18-3 assume !(0 == __VERIFIER_assert_~cond); 51#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 52#L28-2 assume !(main_~j~0 < 8); 55#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 53#L27-3 [2021-10-15 20:01:36,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:36,658 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-15 20:01:36,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:36,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629318704] [2021-10-15 20:01:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:36,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:36,675 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:36,700 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:36,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:36,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2021355157, now seen corresponding path program 1 times [2021-10-15 20:01:36,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:36,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184842524] [2021-10-15 20:01:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:36,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:36,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:01:36,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184842524] [2021-10-15 20:01:36,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184842524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:36,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962802072] [2021-10-15 20:01:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:36,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:01:36,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:36,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:01:36,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:01:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:36,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 20:01:36,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:36,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962802072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:36,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:01:36,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-15 20:01:36,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749524412] [2021-10-15 20:01:36,878 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-15 20:01:36,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:01:36,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:01:36,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:01:36,879 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:01:36,896 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-15 20:01:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:01:36,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2021-10-15 20:01:36,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-10-15 20:01:36,899 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 20 transitions. [2021-10-15 20:01:36,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-10-15 20:01:36,899 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-10-15 20:01:36,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 20 transitions. [2021-10-15 20:01:36,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:01:36,900 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-15 20:01:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 20 transitions. [2021-10-15 20:01:36,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-10-15 20:01:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-15 20:01:36,903 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-15 20:01:36,903 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-15 20:01:36,903 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-15 20:01:36,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2021-10-15 20:01:36,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-15 20:01:36,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:36,904 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:36,905 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:01:36,905 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 2, 1, 1, 1] [2021-10-15 20:01:36,905 INFO L791 eck$LassoCheckResult]: Stem: 105#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); 106#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 111#L27-3 [2021-10-15 20:01:36,905 INFO L793 eck$LassoCheckResult]: Loop: 111#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 112#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 117#L18 assume !(0 == __VERIFIER_assert_~cond); 116#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 115#L18-3 assume !(0 == __VERIFIER_assert_~cond); 107#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 108#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 103#L18 assume !(0 == __VERIFIER_assert_~cond); 104#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 109#L18-3 assume !(0 == __VERIFIER_assert_~cond); 110#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 114#L28-2 assume !(main_~j~0 < 8); 113#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 111#L27-3 [2021-10-15 20:01:36,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:36,906 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-15 20:01:36,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:36,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522456798] [2021-10-15 20:01:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:36,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:36,915 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:36,926 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:36,927 INFO L82 PathProgramCache]: Analyzing trace with hash -51059612, now seen corresponding path program 2 times [2021-10-15 20:01:36,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:36,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140059747] [2021-10-15 20:01:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:36,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:36,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:01:36,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140059747] [2021-10-15 20:01:36,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140059747] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:36,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803643682] [2021-10-15 20:01:36,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:01:36,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:01:36,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:36,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:01:37,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 20:01:37,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 20:01:37,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:01:37,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 20:01:37,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:37,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803643682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:37,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:01:37,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-15 20:01:37,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8801058] [2021-10-15 20:01:37,144 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-15 20:01:37,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:01:37,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:01:37,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:01:37,146 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:01:37,163 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-15 20:01:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:01:37,164 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 25 transitions. [2021-10-15 20:01:37,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2021-10-15 20:01:37,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 25 transitions. [2021-10-15 20:01:37,166 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-15 20:01:37,166 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-15 20:01:37,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 25 transitions. [2021-10-15 20:01:37,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:01:37,167 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-15 20:01:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 25 transitions. [2021-10-15 20:01:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-10-15 20:01:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.05) internal successors, (21), 19 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) [2021-10-15 20:01:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-15 20:01:37,170 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-15 20:01:37,170 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-15 20:01:37,170 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-15 20:01:37,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 21 transitions. [2021-10-15 20:01:37,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-15 20:01:37,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:37,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:37,172 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:01:37,172 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 3, 3, 1, 1, 1] [2021-10-15 20:01:37,172 INFO L791 eck$LassoCheckResult]: Stem: 188#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 189#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 194#L27-3 [2021-10-15 20:01:37,173 INFO L793 eck$LassoCheckResult]: Loop: 194#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 195#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 205#L18 assume !(0 == __VERIFIER_assert_~cond); 204#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 203#L18-3 assume !(0 == __VERIFIER_assert_~cond); 191#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 192#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 186#L18 assume !(0 == __VERIFIER_assert_~cond); 187#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 190#L18-3 assume !(0 == __VERIFIER_assert_~cond); 193#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 202#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 198#L18 assume !(0 == __VERIFIER_assert_~cond); 201#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 200#L18-3 assume !(0 == __VERIFIER_assert_~cond); 199#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 197#L28-2 assume !(main_~j~0 < 8); 196#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 194#L27-3 [2021-10-15 20:01:37,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:37,173 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-15 20:01:37,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:37,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102684286] [2021-10-15 20:01:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:37,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:37,183 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:37,196 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:37,199 INFO L82 PathProgramCache]: Analyzing trace with hash 63866123, now seen corresponding path program 3 times [2021-10-15 20:01:37,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:37,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30959299] [2021-10-15 20:01:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:37,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:37,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:01:37,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30959299] [2021-10-15 20:01:37,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30959299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:37,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189961838] [2021-10-15 20:01:37,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 20:01:37,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:01:37,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:37,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:01:37,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 20:01:37,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-15 20:01:37,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:01:37,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 20:01:37,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:37,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189961838] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:37,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:01:37,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-15 20:01:37,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190122583] [2021-10-15 20:01:37,479 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-15 20:01:37,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:01:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:01:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:01:37,480 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-15 20:01:37,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:01:37,502 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-15 20:01:37,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:01:37,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 30 transitions. [2021-10-15 20:01:37,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2021-10-15 20:01:37,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 30 transitions. [2021-10-15 20:01:37,505 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-15 20:01:37,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-15 20:01:37,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 30 transitions. [2021-10-15 20:01:37,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:01:37,506 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-15 20:01:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 30 transitions. [2021-10-15 20:01:37,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-10-15 20:01:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 states have internal predecessors, (26), 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) [2021-10-15 20:01:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-15 20:01:37,510 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-15 20:01:37,510 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-15 20:01:37,510 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-15 20:01:37,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 26 transitions. [2021-10-15 20:01:37,511 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-15 20:01:37,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:37,511 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:37,512 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:01:37,512 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 4, 4, 1, 1, 1] [2021-10-15 20:01:37,512 INFO L791 eck$LassoCheckResult]: Stem: 297#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); 298#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 303#L27-3 [2021-10-15 20:01:37,513 INFO L793 eck$LassoCheckResult]: Loop: 303#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 304#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 319#L18 assume !(0 == __VERIFIER_assert_~cond); 318#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 317#L18-3 assume !(0 == __VERIFIER_assert_~cond); 300#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 301#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 295#L18 assume !(0 == __VERIFIER_assert_~cond); 296#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 299#L18-3 assume !(0 == __VERIFIER_assert_~cond); 302#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 316#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 315#L18 assume !(0 == __VERIFIER_assert_~cond); 314#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 313#L18-3 assume !(0 == __VERIFIER_assert_~cond); 312#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 311#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 307#L18 assume !(0 == __VERIFIER_assert_~cond); 310#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 309#L18-3 assume !(0 == __VERIFIER_assert_~cond); 308#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 306#L28-2 assume !(main_~j~0 < 8); 305#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 303#L27-3 [2021-10-15 20:01:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-15 20:01:37,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:37,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211138691] [2021-10-15 20:01:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:37,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:37,522 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:37,530 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:37,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2131610428, now seen corresponding path program 4 times [2021-10-15 20:01:37,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:37,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206196727] [2021-10-15 20:01:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:37,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:37,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:01:37,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206196727] [2021-10-15 20:01:37,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206196727] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:37,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726523801] [2021-10-15 20:01:37,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-15 20:01:37,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:01:37,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:37,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:01:37,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-15 20:01:37,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-15 20:01:37,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:01:37,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 20:01:37,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:37,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726523801] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:37,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:01:37,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-15 20:01:37,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035822186] [2021-10-15 20:01:37,799 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-15 20:01:37,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:01:37,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:01:37,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:01:37,802 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. cyclomatic complexity: 2 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:01:37,841 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-15 20:01:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:01:37,842 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 35 transitions. [2021-10-15 20:01:37,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-10-15 20:01:37,849 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 35 transitions. [2021-10-15 20:01:37,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-10-15 20:01:37,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-15 20:01:37,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 35 transitions. [2021-10-15 20:01:37,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:01:37,850 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-10-15 20:01:37,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 35 transitions. [2021-10-15 20:01:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-10-15 20:01:37,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-10-15 20:01:37,859 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-15 20:01:37,860 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-15 20:01:37,860 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-15 20:01:37,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 31 transitions. [2021-10-15 20:01:37,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-15 20:01:37,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:37,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:37,866 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:01:37,866 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 5, 5, 5, 1, 1, 1] [2021-10-15 20:01:37,867 INFO L791 eck$LassoCheckResult]: Stem: 432#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 433#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 438#L27-3 [2021-10-15 20:01:37,867 INFO L793 eck$LassoCheckResult]: Loop: 438#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 439#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 459#L18 assume !(0 == __VERIFIER_assert_~cond); 458#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 457#L18-3 assume !(0 == __VERIFIER_assert_~cond); 435#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 436#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 430#L18 assume !(0 == __VERIFIER_assert_~cond); 431#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 434#L18-3 assume !(0 == __VERIFIER_assert_~cond); 437#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 456#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 455#L18 assume !(0 == __VERIFIER_assert_~cond); 454#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 453#L18-3 assume !(0 == __VERIFIER_assert_~cond); 452#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 451#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 450#L18 assume !(0 == __VERIFIER_assert_~cond); 449#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 448#L18-3 assume !(0 == __VERIFIER_assert_~cond); 447#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 446#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 442#L18 assume !(0 == __VERIFIER_assert_~cond); 445#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 444#L18-3 assume !(0 == __VERIFIER_assert_~cond); 443#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 441#L28-2 assume !(main_~j~0 < 8); 440#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 438#L27-3 [2021-10-15 20:01:37,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:37,867 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-15 20:01:37,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:37,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688625663] [2021-10-15 20:01:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:37,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:37,884 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:37,899 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:37,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:37,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1653313365, now seen corresponding path program 5 times [2021-10-15 20:01:37,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:37,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384830203] [2021-10-15 20:01:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:37,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:38,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:01:38,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384830203] [2021-10-15 20:01:38,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384830203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:38,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974336599] [2021-10-15 20:01:38,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-15 20:01:38,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:01:38,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:38,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:01:38,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-15 20:01:38,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-15 20:01:38,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:01:38,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 20:01:38,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:38,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974336599] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:38,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:01:38,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-15 20:01:38,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809371950] [2021-10-15 20:01:38,237 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-15 20:01:38,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:01:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:01:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-15 20:01:38,238 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:38,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:01:38,265 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-10-15 20:01:38,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:01:38,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 40 transitions. [2021-10-15 20:01:38,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-15 20:01:38,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 40 transitions. [2021-10-15 20:01:38,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-15 20:01:38,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-10-15 20:01:38,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 40 transitions. [2021-10-15 20:01:38,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:01:38,271 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-15 20:01:38,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 40 transitions. [2021-10-15 20:01:38,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-10-15 20:01:38,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-10-15 20:01:38,278 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-15 20:01:38,278 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-15 20:01:38,278 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-15 20:01:38,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 36 transitions. [2021-10-15 20:01:38,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-15 20:01:38,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:38,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:38,281 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:01:38,281 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 6, 6, 6, 6, 1, 1, 1] [2021-10-15 20:01:38,281 INFO L791 eck$LassoCheckResult]: Stem: 593#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); 594#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 599#L27-3 [2021-10-15 20:01:38,282 INFO L793 eck$LassoCheckResult]: Loop: 599#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 600#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 625#L18 assume !(0 == __VERIFIER_assert_~cond); 624#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 623#L18-3 assume !(0 == __VERIFIER_assert_~cond); 596#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 597#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 591#L18 assume !(0 == __VERIFIER_assert_~cond); 592#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 595#L18-3 assume !(0 == __VERIFIER_assert_~cond); 598#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 622#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 621#L18 assume !(0 == __VERIFIER_assert_~cond); 620#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 619#L18-3 assume !(0 == __VERIFIER_assert_~cond); 618#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 617#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 616#L18 assume !(0 == __VERIFIER_assert_~cond); 615#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 614#L18-3 assume !(0 == __VERIFIER_assert_~cond); 613#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 612#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 611#L18 assume !(0 == __VERIFIER_assert_~cond); 610#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 609#L18-3 assume !(0 == __VERIFIER_assert_~cond); 608#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 607#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 603#L18 assume !(0 == __VERIFIER_assert_~cond); 606#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 605#L18-3 assume !(0 == __VERIFIER_assert_~cond); 604#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 602#L28-2 assume !(main_~j~0 < 8); 601#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 599#L27-3 [2021-10-15 20:01:38,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:38,283 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-10-15 20:01:38,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:38,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780494111] [2021-10-15 20:01:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:38,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:38,298 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:38,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:38,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:38,315 INFO L82 PathProgramCache]: Analyzing trace with hash 978226468, now seen corresponding path program 6 times [2021-10-15 20:01:38,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:38,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822238115] [2021-10-15 20:01:38,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:38,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:38,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:01:38,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822238115] [2021-10-15 20:01:38,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822238115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:38,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492663736] [2021-10-15 20:01:38,427 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-15 20:01:38,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:01:38,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:38,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:01:38,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-15 20:01:38,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-15 20:01:38,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:01:38,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 20:01:38,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:38,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492663736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:38,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:01:38,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-15 20:01:38,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351365986] [2021-10-15 20:01:38,635 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-15 20:01:38,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:01:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-15 20:01:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-15 20:01:38,637 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. cyclomatic complexity: 2 Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 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) [2021-10-15 20:01:38,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:01:38,682 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-10-15 20:01:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:01:38,682 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 45 transitions. [2021-10-15 20:01:38,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-10-15 20:01:38,683 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 45 transitions. [2021-10-15 20:01:38,683 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-15 20:01:38,684 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-15 20:01:38,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 45 transitions. [2021-10-15 20:01:38,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:01:38,684 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-15 20:01:38,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 45 transitions. [2021-10-15 20:01:38,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-10-15 20:01:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.025) internal successors, (41), 39 states have internal predecessors, (41), 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) [2021-10-15 20:01:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-10-15 20:01:38,688 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-15 20:01:38,688 INFO L587 BuchiCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-15 20:01:38,688 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-15 20:01:38,688 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 41 transitions. [2021-10-15 20:01:38,689 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-10-15 20:01:38,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:38,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:38,690 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:01:38,690 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 7, 7, 7, 7, 1, 1, 1] [2021-10-15 20:01:38,690 INFO L791 eck$LassoCheckResult]: Stem: 780#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 781#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 786#L27-3 [2021-10-15 20:01:38,690 INFO L793 eck$LassoCheckResult]: Loop: 786#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 787#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 817#L18 assume !(0 == __VERIFIER_assert_~cond); 816#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 815#L18-3 assume !(0 == __VERIFIER_assert_~cond); 783#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 784#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 778#L18 assume !(0 == __VERIFIER_assert_~cond); 779#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 782#L18-3 assume !(0 == __VERIFIER_assert_~cond); 785#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 814#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 813#L18 assume !(0 == __VERIFIER_assert_~cond); 812#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 811#L18-3 assume !(0 == __VERIFIER_assert_~cond); 810#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 809#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 808#L18 assume !(0 == __VERIFIER_assert_~cond); 807#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 806#L18-3 assume !(0 == __VERIFIER_assert_~cond); 805#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 804#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 803#L18 assume !(0 == __VERIFIER_assert_~cond); 802#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 801#L18-3 assume !(0 == __VERIFIER_assert_~cond); 800#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 799#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 798#L18 assume !(0 == __VERIFIER_assert_~cond); 797#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 796#L18-3 assume !(0 == __VERIFIER_assert_~cond); 795#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 794#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 790#L18 assume !(0 == __VERIFIER_assert_~cond); 793#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 792#L18-3 assume !(0 == __VERIFIER_assert_~cond); 791#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 789#L28-2 assume !(main_~j~0 < 8); 788#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 786#L27-3 [2021-10-15 20:01:38,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:38,691 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-10-15 20:01:38,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:38,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272190096] [2021-10-15 20:01:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:38,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:38,698 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:38,710 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:38,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:38,711 INFO L82 PathProgramCache]: Analyzing trace with hash 736121931, now seen corresponding path program 7 times [2021-10-15 20:01:38,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:38,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469584521] [2021-10-15 20:01:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:38,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:38,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:01:38,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469584521] [2021-10-15 20:01:38,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469584521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:38,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581330483] [2021-10-15 20:01:38,842 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-15 20:01:38,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:01:38,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:38,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:01:38,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-15 20:01:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:38,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 20:01:38,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:39,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581330483] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:01:39,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:01:39,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-15 20:01:39,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672249125] [2021-10-15 20:01:39,069 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-15 20:01:39,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:01:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 20:01:39,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-15 20:01:39,071 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. cyclomatic complexity: 2 Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:01:39,109 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-10-15 20:01:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 20:01:39,110 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 46 transitions. [2021-10-15 20:01:39,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-15 20:01:39,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 46 transitions. [2021-10-15 20:01:39,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-15 20:01:39,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-15 20:01:39,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 46 transitions. [2021-10-15 20:01:39,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:01:39,115 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-15 20:01:39,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 46 transitions. [2021-10-15 20:01:39,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-15 20:01:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 44 states have internal predecessors, (46), 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) [2021-10-15 20:01:39,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-10-15 20:01:39,128 INFO L704 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-15 20:01:39,128 INFO L587 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-15 20:01:39,128 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-15 20:01:39,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 46 transitions. [2021-10-15 20:01:39,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-15 20:01:39,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:39,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:39,131 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:01:39,132 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 8, 8, 8, 8, 1, 1, 1] [2021-10-15 20:01:39,132 INFO L791 eck$LassoCheckResult]: Stem: 989#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); 990#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 995#L27-3 [2021-10-15 20:01:39,132 INFO L793 eck$LassoCheckResult]: Loop: 995#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 996#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1031#L18 assume !(0 == __VERIFIER_assert_~cond); 1030#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1029#L18-3 assume !(0 == __VERIFIER_assert_~cond); 992#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 993#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 987#L18 assume !(0 == __VERIFIER_assert_~cond); 988#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 991#L18-3 assume !(0 == __VERIFIER_assert_~cond); 994#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1028#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1027#L18 assume !(0 == __VERIFIER_assert_~cond); 1026#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1025#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1024#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1023#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1022#L18 assume !(0 == __VERIFIER_assert_~cond); 1021#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1020#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1019#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1018#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1017#L18 assume !(0 == __VERIFIER_assert_~cond); 1016#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1015#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1014#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1013#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1012#L18 assume !(0 == __VERIFIER_assert_~cond); 1011#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1010#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1009#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1008#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1007#L18 assume !(0 == __VERIFIER_assert_~cond); 1006#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1005#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1004#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1003#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 999#L18 assume !(0 == __VERIFIER_assert_~cond); 1002#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1001#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1000#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 998#L28-2 assume !(main_~j~0 < 8); 997#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 995#L27-3 [2021-10-15 20:01:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:39,133 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-10-15 20:01:39,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:39,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905013543] [2021-10-15 20:01:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:39,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:39,146 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:39,157 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:39,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1675619716, now seen corresponding path program 8 times [2021-10-15 20:01:39,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:39,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286440623] [2021-10-15 20:01:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:39,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:39,179 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:39,212 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:39,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:39,214 INFO L82 PathProgramCache]: Analyzing trace with hash -532421502, now seen corresponding path program 1 times [2021-10-15 20:01:39,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:39,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295105975] [2021-10-15 20:01:39,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:39,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:39,234 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:39,267 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:39,895 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:01:39,895 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:01:39,895 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:01:39,895 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:01:39,896 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 20:01:39,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:39,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:01:39,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:01:39,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration9_Loop [2021-10-15 20:01:39,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:01:39,897 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:01:39,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:39,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:39,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:39,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:39,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:39,980 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:01:39,980 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 20:01:39,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:39,986 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:39,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:01:39,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:40,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-15 20:01:40,021 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:01:40,021 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:01:40,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:40,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:40,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:40,050 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:40,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-15 20:01:40,053 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:01:40,053 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:40,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:40,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:40,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:40,090 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:40,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-15 20:01:40,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 20:01:40,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:40,197 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 20:01:40,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:40,203 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:01:40,203 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:01:40,203 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:01:40,203 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:01:40,203 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 20:01:40,203 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:40,203 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:01:40,203 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:01:40,203 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration9_Loop [2021-10-15 20:01:40,203 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:01:40,204 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:01:40,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:40,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:40,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:40,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:40,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:40,308 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:01:40,312 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 20:01:40,313 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:40,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:40,326 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:40,354 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 [2021-10-15 20:01:40,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-15 20:01:40,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:01:40,364 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:01:40,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:01:40,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:01:40,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:01:40,366 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:01:40,366 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:01:40,410 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:01:40,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:40,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:40,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:40,447 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:40,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-15 20:01:40,450 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 [2021-10-15 20:01:40,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:01:40,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:01:40,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:01:40,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:01:40,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:01:40,459 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:01:40,459 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:01:40,461 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:01:40,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-10-15 20:01:40,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:40,481 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:40,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-15 20:01:40,501 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 [2021-10-15 20:01:40,507 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:01:40,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:01:40,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:01:40,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:01:40,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:01:40,509 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:01:40,509 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:01:40,520 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 20:01:40,525 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-15 20:01:40,525 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-15 20:01:40,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:40,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:40,530 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:40,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-15 20:01:40,536 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 20:01:40,536 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 20:01:40,536 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 20:01:40,536 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~nlen~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~nlen~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-15 20:01:40,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:40,561 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 20:01:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:40,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:01:40,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:40,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 20:01:40,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-15 20:01:40,921 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 [2021-10-15 20:01:40,922 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 46 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:40,955 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 46 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 88 states and 91 transitions. Complement of second has 4 states. [2021-10-15 20:01:40,955 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 [2021-10-15 20:01:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-15 20:01:40,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 43 letters. [2021-10-15 20:01:40,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:40,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 45 letters. Loop has 43 letters. [2021-10-15 20:01:40,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:40,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 86 letters. [2021-10-15 20:01:40,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:40,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 91 transitions. [2021-10-15 20:01:40,972 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 20:01:40,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 87 states and 90 transitions. [2021-10-15 20:01:40,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2021-10-15 20:01:40,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-15 20:01:40,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 90 transitions. [2021-10-15 20:01:40,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 20:01:40,975 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 90 transitions. [2021-10-15 20:01:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 90 transitions. [2021-10-15 20:01:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 51. [2021-10-15 20:01:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-10-15 20:01:40,980 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-10-15 20:01:40,980 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-10-15 20:01:40,980 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-15 20:01:40,980 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 54 transitions. [2021-10-15 20:01:40,981 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 20:01:40,981 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:40,981 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:40,981 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-15 20:01:40,981 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-15 20:01:40,981 INFO L791 eck$LassoCheckResult]: Stem: 1279#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); 1280#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1289#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1285#L28-2 [2021-10-15 20:01:40,982 INFO L793 eck$LassoCheckResult]: Loop: 1285#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1275#L18 assume !(0 == __VERIFIER_assert_~cond); 1276#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1281#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1284#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1285#L28-2 [2021-10-15 20:01:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:40,984 INFO L82 PathProgramCache]: Analyzing trace with hash 29863, now seen corresponding path program 1 times [2021-10-15 20:01:40,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:40,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997119963] [2021-10-15 20:01:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:40,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:41,002 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:41,007 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:41,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:41,008 INFO L82 PathProgramCache]: Analyzing trace with hash 46025336, now seen corresponding path program 1 times [2021-10-15 20:01:41,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:41,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621817392] [2021-10-15 20:01:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:41,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:41,017 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:41,024 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:41,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:41,027 INFO L82 PathProgramCache]: Analyzing trace with hash 271240594, now seen corresponding path program 1 times [2021-10-15 20:01:41,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:41,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611594839] [2021-10-15 20:01:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:41,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:41,036 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:41,059 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:41,126 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:01:41,126 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:01:41,126 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:01:41,126 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:01:41,127 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 20:01:41,127 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,127 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:01:41,127 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:01:41,127 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration10_Loop [2021-10-15 20:01:41,127 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:01:41,127 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:01:41,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:41,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:41,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:41,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:41,203 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:01:41,203 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 20:01:41,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:41,211 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:41,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:41,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-15 20:01:41,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:01:41,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:41,254 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:01:41,255 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Honda state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:01:41,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:41,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:41,288 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:41,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-15 20:01:41,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:01:41,294 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:41,326 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:01:41,326 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:01:41,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:41,363 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:41,366 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:41,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:01:41,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:41,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-15 20:01:41,394 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:01:41,394 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:01:41,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:41,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:41,433 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:41,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:01:41,439 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:41,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-15 20:01:41,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:41,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:41,497 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:41,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 20:01:41,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:41,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-15 20:01:41,565 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 20:01:41,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:41,572 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:01:41,573 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:01:41,573 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:01:41,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:01:41,573 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 20:01:41,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:01:41,573 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:01:41,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration10_Loop [2021-10-15 20:01:41,573 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:01:41,573 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:01:41,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:41,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:41,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:41,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:41,626 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:01:41,626 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 20:01:41,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:41,628 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:41,633 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 [2021-10-15 20:01:41,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:01:41,642 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:01:41,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:01:41,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:01:41,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:01:41,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:01:41,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:01:41,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-15 20:01:41,653 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:01:41,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:41,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:41,698 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:41,705 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 [2021-10-15 20:01:41,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:01:41,714 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:01:41,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:01:41,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:01:41,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:01:41,715 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:01:41,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:01:41,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-15 20:01:41,729 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:01:41,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:41,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:41,772 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:41,778 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 [2021-10-15 20:01:41,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:01:41,788 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:01:41,788 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:01:41,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:01:41,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:01:41,790 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:01:41,790 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:01:41,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-15 20:01:41,804 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 20:01:41,807 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 20:01:41,807 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-15 20:01:41,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:41,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:41,808 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:41,815 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 20:01:41,815 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 20:01:41,815 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 20:01:41,815 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 15 Supporting invariants [] [2021-10-15 20:01:41,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-15 20:01:41,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:41,859 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 20:01:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:41,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:01:41,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:41,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 20:01:41,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:41,937 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 [2021-10-15 20:01:41,938 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 54 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:41,962 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 54 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 138 states and 145 transitions. Complement of second has 7 states. [2021-10-15 20:01:41,962 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 [2021-10-15 20:01:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-15 20:01:41,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 5 letters. [2021-10-15 20:01:41,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:41,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 5 letters. [2021-10-15 20:01:41,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:41,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 10 letters. [2021-10-15 20:01:41,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:41,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 145 transitions. [2021-10-15 20:01:41,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 20:01:41,970 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 94 states and 98 transitions. [2021-10-15 20:01:41,970 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-15 20:01:41,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-15 20:01:41,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 98 transitions. [2021-10-15 20:01:41,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 20:01:41,975 INFO L681 BuchiCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-10-15 20:01:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 98 transitions. [2021-10-15 20:01:41,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 51. [2021-10-15 20:01:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 50 states have internal predecessors, (53), 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) [2021-10-15 20:01:41,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-10-15 20:01:41,983 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-15 20:01:41,983 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-15 20:01:41,983 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-15 20:01:41,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 53 transitions. [2021-10-15 20:01:41,984 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 20:01:41,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:41,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:41,992 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 8, 8, 8, 2, 1, 1, 1, 1] [2021-10-15 20:01:41,992 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-15 20:01:41,994 INFO L791 eck$LassoCheckResult]: Stem: 1516#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); 1517#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1525#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1526#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1562#L18 assume !(0 == __VERIFIER_assert_~cond); 1561#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1560#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1520#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1521#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1514#L18 assume !(0 == __VERIFIER_assert_~cond); 1515#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1523#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1524#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1559#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1558#L18 assume !(0 == __VERIFIER_assert_~cond); 1557#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1556#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1555#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1554#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1553#L18 assume !(0 == __VERIFIER_assert_~cond); 1552#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1551#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1550#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1549#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1548#L18 assume !(0 == __VERIFIER_assert_~cond); 1547#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1546#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1545#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1544#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1543#L18 assume !(0 == __VERIFIER_assert_~cond); 1542#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1541#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1540#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1539#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1538#L18 assume !(0 == __VERIFIER_assert_~cond); 1537#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1536#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1535#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1534#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1530#L18 assume !(0 == __VERIFIER_assert_~cond); 1533#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1532#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1531#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1529#L28-2 assume !(main_~j~0 < 8); 1528#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1527#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1519#L28-2 [2021-10-15 20:01:41,994 INFO L793 eck$LassoCheckResult]: Loop: 1519#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1512#L18 assume !(0 == __VERIFIER_assert_~cond); 1513#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1522#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1518#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1519#L28-2 [2021-10-15 20:01:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:41,995 INFO L82 PathProgramCache]: Analyzing trace with hash 674802632, now seen corresponding path program 2 times [2021-10-15 20:01:41,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:41,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457630620] [2021-10-15 20:01:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:41,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:42,019 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:42,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:42,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:42,044 INFO L82 PathProgramCache]: Analyzing trace with hash 46025336, now seen corresponding path program 2 times [2021-10-15 20:01:42,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:42,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883025706] [2021-10-15 20:01:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:42,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:42,051 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:42,058 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:42,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1573708561, now seen corresponding path program 3 times [2021-10-15 20:01:42,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:42,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402523557] [2021-10-15 20:01:42,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:42,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:42,079 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:42,112 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:42,186 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:01:42,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:01:42,187 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:01:42,187 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:01:42,187 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 20:01:42,187 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,187 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:01:42,187 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:01:42,187 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration11_Loop [2021-10-15 20:01:42,187 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:01:42,188 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:01:42,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:42,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:42,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:42,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:42,251 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:01:42,251 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 20:01:42,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:42,254 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:42,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:01:42,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:42,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-15 20:01:42,286 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:01:42,286 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:01:42,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:42,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:42,317 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:42,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-15 20:01:42,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:01:42,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:42,336 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:01:42,336 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:01:42,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:42,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:42,370 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:42,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-15 20:01:42,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:01:42,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:42,394 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:01:42,394 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Honda state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:01:42,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:42,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:42,420 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:42,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:01:42,422 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:42,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-15 20:01:42,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:42,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:42,453 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:42,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-15 20:01:42,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 20:01:42,456 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:01:42,489 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 20:01:42,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:42,492 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:01:42,492 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:01:42,492 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:01:42,492 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:01:42,493 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 20:01:42,493 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,493 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:01:42,493 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:01:42,493 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration11_Loop [2021-10-15 20:01:42,493 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:01:42,493 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:01:42,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:42,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:42,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:42,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:01:42,562 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:01:42,562 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 20:01:42,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:42,563 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:42,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-15 20:01:42,606 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 [2021-10-15 20:01:42,614 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:01:42,615 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:01:42,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:01:42,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:01:42,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:01:42,616 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:01:42,616 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:01:42,628 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:01:42,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:42,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-15 20:01:42,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:42,649 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:42,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-15 20:01:42,651 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 [2021-10-15 20:01:42,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:01:42,658 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:01:42,658 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:01:42,658 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:01:42,658 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:01:42,659 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:01:42,659 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:01:42,663 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:01:42,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:42,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:42,684 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:42,694 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 [2021-10-15 20:01:42,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:01:42,703 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:01:42,703 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:01:42,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:01:42,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:01:42,704 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:01:42,705 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:01:42,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-15 20:01:42,717 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:01:42,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:42,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:42,751 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:42,753 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 [2021-10-15 20:01:42,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-15 20:01:42,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:01:42,762 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:01:42,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:01:42,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:01:42,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:01:42,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:01:42,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:01:42,770 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 20:01:42,772 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 20:01:42,772 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-15 20:01:42,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:42,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:42,773 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:42,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-15 20:01:42,775 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 20:01:42,775 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 20:01:42,775 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 20:01:42,775 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 15 Supporting invariants [] [2021-10-15 20:01:42,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:42,801 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 20:01:42,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:42,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:01:42,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:43,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 20:01:43,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:43,066 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 [2021-10-15 20:01:43,067 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:43,094 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 128 states and 133 transitions. Complement of second has 7 states. [2021-10-15 20:01:43,094 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 [2021-10-15 20:01:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:43,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-15 20:01:43,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-15 20:01:43,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:43,095 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 20:01:43,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:43,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:01:43,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:43,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 20:01:43,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:43,364 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 [2021-10-15 20:01:43,365 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:43,383 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 128 states and 133 transitions. Complement of second has 7 states. [2021-10-15 20:01:43,383 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 [2021-10-15 20:01:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-15 20:01:43,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-15 20:01:43,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:43,384 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 20:01:43,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:43,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:01:43,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:01:43,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 20:01:43,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:01:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:01:43,608 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 [2021-10-15 20:01:43,608 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:43,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 90 states and 94 transitions. Complement of second has 6 states. [2021-10-15 20:01:43,629 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 [2021-10-15 20:01:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:01:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-15 20:01:43,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-15 20:01:43,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:43,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 51 letters. Loop has 5 letters. [2021-10-15 20:01:43,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:43,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 10 letters. [2021-10-15 20:01:43,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:01:43,631 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 94 transitions. [2021-10-15 20:01:43,633 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-15 20:01:43,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 0 states and 0 transitions. [2021-10-15 20:01:43,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-15 20:01:43,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-15 20:01:43,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-15 20:01:43,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:01:43,634 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 20:01:43,634 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 20:01:43,634 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 20:01:43,635 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-15 20:01:43,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-15 20:01:43,635 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-15 20:01:43,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-15 20:01:43,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 08:01:43 BoogieIcfgContainer [2021-10-15 20:01:43,641 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-15 20:01:43,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:01:43,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:01:43,642 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:01:43,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:01:36" (3/4) ... [2021-10-15 20:01:43,646 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:01:43,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:01:43,648 INFO L168 Benchmark]: Toolchain (without parser) took 8173.21 ms. Allocated memory was 86.0 MB in the beginning and 163.6 MB in the end (delta: 77.6 MB). Free memory was 49.1 MB in the beginning and 70.6 MB in the end (delta: -21.5 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:43,649 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory was 65.9 MB in the beginning and 65.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:01:43,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.57 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 48.9 MB in the beginning and 85.0 MB in the end (delta: -36.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:43,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.98 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 83.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:43,651 INFO L168 Benchmark]: Boogie Preprocessor took 19.96 ms. Allocated memory is still 109.1 MB. Free memory was 83.6 MB in the beginning and 82.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:43,651 INFO L168 Benchmark]: RCFGBuilder took 289.33 ms. Allocated memory is still 109.1 MB. Free memory was 82.6 MB in the beginning and 73.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:43,652 INFO L168 Benchmark]: BuchiAutomizer took 7560.16 ms. Allocated memory was 109.1 MB in the beginning and 163.6 MB in the end (delta: 54.5 MB). Free memory was 73.2 MB in the beginning and 70.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:43,652 INFO L168 Benchmark]: Witness Printer took 4.78 ms. Allocated memory is still 163.6 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:01:43,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory was 65.9 MB in the beginning and 65.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.57 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 48.9 MB in the beginning and 85.0 MB in the end (delta: -36.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.98 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 83.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.96 ms. Allocated memory is still 109.1 MB. Free memory was 83.6 MB in the beginning and 82.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 289.33 ms. Allocated memory is still 109.1 MB. Free memory was 82.6 MB in the beginning and 73.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7560.16 ms. Allocated memory was 109.1 MB in the beginning and 163.6 MB in the end (delta: 54.5 MB). Free memory was 73.2 MB in the beginning and 70.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.78 ms. Allocated memory is still 163.6 MB. Free memory is still 70.6 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 11 terminating modules (8 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function nlen + -1 * i and consists of 3 locations. One deterministic module has affine ranking function 15 + -2 * j and consists of 4 locations. One nondeterministic module has affine ranking function 15 + -2 * j and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.5s and 12 iterations. TraceHistogramMax:8. Analysis of lassos took 5.6s. Construction of modules took 0.1s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 9. Minimization of nondet autom 2. Automata minimization 63.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 107 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 51 states and ocurred in iteration 9. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 148/148 HoareTripleCheckerStatistics: 115 SDtfs, 197 SDslu, 163 SDs, 0 SdLazy, 157 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 189.4ms Time LassoAnalysisResults: nont0 unkn0 SFLI8 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital27 mio100 ax100 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq133 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 97ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-15 20:01:43,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:43,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:44,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-15 20:01:44,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-15 20:01:44,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-15 20:01:44,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-15 20:01:44,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-15 20:01:45,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-15 20:01:45,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93842765-b88e-47cf-b0c5-facfcb991451/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...