./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/id_build.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c4c8975bee6324b0c0486aa99ba8be369d6762a33e8dd5b012191d5fa43c106 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:11:18,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:11:18,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:11:18,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:11:18,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:11:18,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:11:18,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:11:18,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:11:18,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:11:18,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:11:18,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:11:18,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:11:18,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:11:18,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:11:18,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:11:18,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:11:18,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:11:18,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:11:18,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:11:18,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:11:18,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:11:18,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:11:18,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:11:18,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:11:18,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:11:18,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:11:18,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:11:18,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:11:18,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:11:18,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:11:18,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:11:18,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:11:18,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:11:18,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:11:18,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:11:18,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:11:18,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:11:18,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:11:18,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:11:18,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:11:18,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:11:18,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:11:18,707 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:11:18,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:11:18,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:11:18,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:11:18,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:11:18,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:11:18,709 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:11:18,710 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:11:18,710 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:11:18,710 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:11:18,710 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:11:18,711 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:11:18,711 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:11:18,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:11:18,711 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:11:18,712 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:11:18,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:11:18,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:11:18,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:11:18,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:11:18,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:11:18,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:11:18,713 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:11:18,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:11:18,714 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:11:18,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:11:18,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:11:18,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:11:18,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:11:18,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:11:18,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:11:18,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:11:18,716 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:11:18,718 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_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4c8975bee6324b0c0486aa99ba8be369d6762a33e8dd5b012191d5fa43c106 [2021-10-21 19:11:18,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:11:19,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:11:19,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:11:19,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:11:19,029 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:11:19,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loop-invgen/id_build.i [2021-10-21 19:11:19,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/data/9882c0e8f/0905a1e855d0458dbb409177d1345b6a/FLAGb8d76676d [2021-10-21 19:11:19,599 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:11:19,599 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/sv-benchmarks/c/loop-invgen/id_build.i [2021-10-21 19:11:19,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/data/9882c0e8f/0905a1e855d0458dbb409177d1345b6a/FLAGb8d76676d [2021-10-21 19:11:19,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/data/9882c0e8f/0905a1e855d0458dbb409177d1345b6a [2021-10-21 19:11:19,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:11:19,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:11:19,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:11:19,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:11:19,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:11:19,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:11:19" (1/1) ... [2021-10-21 19:11:19,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d69205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:19, skipping insertion in model container [2021-10-21 19:11:19,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:11:19" (1/1) ... [2021-10-21 19:11:19,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:11:19,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:11:20,190 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_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-10-21 19:11:20,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:11:20,214 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:11:20,235 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_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-10-21 19:11:20,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:11:20,263 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:11:20,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20 WrapperNode [2021-10-21 19:11:20,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:11:20,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:11:20,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:11:20,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:11:20,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (1/1) ... [2021-10-21 19:11:20,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (1/1) ... [2021-10-21 19:11:20,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:11:20,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:11:20,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:11:20,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:11:20,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (1/1) ... [2021-10-21 19:11:20,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (1/1) ... [2021-10-21 19:11:20,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (1/1) ... [2021-10-21 19:11:20,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (1/1) ... [2021-10-21 19:11:20,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (1/1) ... [2021-10-21 19:11:20,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (1/1) ... [2021-10-21 19:11:20,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (1/1) ... [2021-10-21 19:11:20,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:11:20,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:11:20,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:11:20,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:11:20,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (1/1) ... [2021-10-21 19:11:20,334 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:20,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:20,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:20,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:11:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:11:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:11:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:11:20,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:11:20,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:11:20,581 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-21 19:11:20,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:11:20 BoogieIcfgContainer [2021-10-21 19:11:20,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:11:20,584 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:11:20,585 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:11:20,593 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:11:20,594 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:11:20,595 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:11:19" (1/3) ... [2021-10-21 19:11:20,596 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69ba455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:11:20, skipping insertion in model container [2021-10-21 19:11:20,602 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:11:20,602 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:11:20" (2/3) ... [2021-10-21 19:11:20,603 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69ba455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:11:20, skipping insertion in model container [2021-10-21 19:11:20,603 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:11:20,603 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:11:20" (3/3) ... [2021-10-21 19:11:20,605 INFO L389 chiAutomizerObserver]: Analyzing ICFG id_build.i [2021-10-21 19:11:20,659 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:11:20,659 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:11:20,659 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:11:20,659 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:11:20,659 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:11:20,659 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:11:20,659 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:11:20,660 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:11:20,674 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) [2021-10-21 19:11:20,692 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-21 19:11:20,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:20,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:20,698 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:11:20,699 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:11:20,699 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:11:20,699 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) [2021-10-21 19:11:20,701 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-21 19:11:20,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:20,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:20,702 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:11:20,702 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:11:20,709 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 [2021-10-21 19:11:20,710 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 [2021-10-21 19:11:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:20,717 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-21 19:11:20,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:20,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915416434] [2021-10-21 19:11:20,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:20,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:20,814 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:20,850 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:20,855 INFO L82 PathProgramCache]: Analyzing trace with hash 39940, now seen corresponding path program 1 times [2021-10-21 19:11:20,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:20,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011967248] [2021-10-21 19:11:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:20,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:20,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:20,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011967248] [2021-10-21 19:11:20,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011967248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:11:20,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:11:20,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:11:20,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328821193] [2021-10-21 19:11:20,933 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:11:20,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:20,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:11:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:11:20,968 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) [2021-10-21 19:11:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:21,022 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-21 19:11:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:11:21,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 23 transitions. [2021-10-21 19:11:21,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-21 19:11:21,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 14 states and 15 transitions. [2021-10-21 19:11:21,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-21 19:11:21,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-21 19:11:21,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2021-10-21 19:11:21,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:11:21,032 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-21 19:11:21,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2021-10-21 19:11:21,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2021-10-21 19:11:21,057 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) [2021-10-21 19:11:21,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-21 19:11:21,059 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-21 19:11:21,059 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-21 19:11:21,059 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:11:21,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2021-10-21 19:11:21,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-21 19:11:21,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:21,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:21,061 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:11:21,061 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:11:21,062 INFO L791 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 49#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 53#L27-3 [2021-10-21 19:11:21,062 INFO L793 eck$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 [2021-10-21 19:11:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:21,063 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-21 19:11:21,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:21,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693805219] [2021-10-21 19:11:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:21,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:21,080 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:21,099 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2021355157, now seen corresponding path program 1 times [2021-10-21 19:11:21,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:21,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299555255] [2021-10-21 19:11:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:21,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:21,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:21,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299555255] [2021-10-21 19:11:21,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299555255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:21,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849719735] [2021-10-21 19:11:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:21,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:21,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:21,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:21,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:11:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:21,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:11:21,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:21,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849719735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:21,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:11:21,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-21 19:11:21,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976088097] [2021-10-21 19:11:21,358 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:11:21,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:21,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:11:21,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:11:21,360 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) [2021-10-21 19:11:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:21,380 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-21 19:11:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:11:21,381 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2021-10-21 19:11:21,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-10-21 19:11:21,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 20 transitions. [2021-10-21 19:11:21,384 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-10-21 19:11:21,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-10-21 19:11:21,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 20 transitions. [2021-10-21 19:11:21,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:11:21,385 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-21 19:11:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 20 transitions. [2021-10-21 19:11:21,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-10-21 19:11:21,387 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) [2021-10-21 19:11:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-21 19:11:21,388 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-21 19:11:21,389 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-21 19:11:21,389 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:11:21,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2021-10-21 19:11:21,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-21 19:11:21,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:21,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:21,391 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:11:21,391 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 2, 1, 1, 1] [2021-10-21 19:11:21,391 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 [2021-10-21 19:11:21,392 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 [2021-10-21 19:11:21,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:21,393 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-21 19:11:21,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:21,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724742429] [2021-10-21 19:11:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:21,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:21,408 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:21,426 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash -51059612, now seen corresponding path program 2 times [2021-10-21 19:11:21,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:21,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899045562] [2021-10-21 19:11:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:21,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:21,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:21,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899045562] [2021-10-21 19:11:21,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899045562] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:21,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053141514] [2021-10-21 19:11:21,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:11:21,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:21,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:21,494 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:21,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:11:21,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:11:21,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:11:21,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:11:21,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:21,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053141514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:21,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:11:21,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:11:21,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194231606] [2021-10-21 19:11:21,614 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:11:21,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:11:21,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:11:21,616 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) [2021-10-21 19:11:21,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:21,640 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-21 19:11:21,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:11:21,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 25 transitions. [2021-10-21 19:11:21,642 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2021-10-21 19:11:21,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 25 transitions. [2021-10-21 19:11:21,644 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-21 19:11:21,644 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-21 19:11:21,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 25 transitions. [2021-10-21 19:11:21,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:11:21,645 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-21 19:11:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 25 transitions. [2021-10-21 19:11:21,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-10-21 19:11:21,648 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) [2021-10-21 19:11:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-21 19:11:21,649 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-21 19:11:21,649 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-21 19:11:21,650 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:11:21,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 21 transitions. [2021-10-21 19:11:21,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-21 19:11:21,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:21,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:21,652 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:11:21,652 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 3, 3, 1, 1, 1] [2021-10-21 19:11:21,652 INFO L791 eck$LassoCheckResult]: Stem: 188#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 189#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 194#L27-3 [2021-10-21 19:11:21,653 INFO L793 eck$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 [2021-10-21 19:11:21,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:21,654 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-21 19:11:21,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:21,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184921752] [2021-10-21 19:11:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:21,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:21,668 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:21,686 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:21,687 INFO L82 PathProgramCache]: Analyzing trace with hash 63866123, now seen corresponding path program 3 times [2021-10-21 19:11:21,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:21,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495331090] [2021-10-21 19:11:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:21,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:21,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:21,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495331090] [2021-10-21 19:11:21,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495331090] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:21,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808184481] [2021-10-21 19:11:21,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:11:21,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:21,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:21,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:21,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:11:21,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 19:11:21,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:11:21,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:11:21,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:21,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808184481] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:21,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:11:21,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 19:11:21,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241739184] [2021-10-21 19:11:21,999 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:11:22,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:11:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:11:22,003 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) [2021-10-21 19:11:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:22,041 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-21 19:11:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:11:22,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 30 transitions. [2021-10-21 19:11:22,045 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2021-10-21 19:11:22,047 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 30 transitions. [2021-10-21 19:11:22,047 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-21 19:11:22,047 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-21 19:11:22,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 30 transitions. [2021-10-21 19:11:22,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:11:22,048 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-21 19:11:22,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 30 transitions. [2021-10-21 19:11:22,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-10-21 19:11:22,053 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) [2021-10-21 19:11:22,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-21 19:11:22,056 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-21 19:11:22,056 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-21 19:11:22,056 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:11:22,056 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 26 transitions. [2021-10-21 19:11:22,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-21 19:11:22,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:22,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:22,060 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:11:22,060 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 4, 4, 1, 1, 1] [2021-10-21 19:11:22,060 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 [2021-10-21 19:11:22,060 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 [2021-10-21 19:11:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:22,061 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-21 19:11:22,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:22,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326473896] [2021-10-21 19:11:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:22,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:22,075 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:22,097 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:22,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2131610428, now seen corresponding path program 4 times [2021-10-21 19:11:22,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:22,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464437262] [2021-10-21 19:11:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:22,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:22,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:22,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464437262] [2021-10-21 19:11:22,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464437262] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:22,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640960323] [2021-10-21 19:11:22,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:11:22,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:22,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:22,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:22,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:11:22,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:11:22,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:11:22,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:11:22,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:22,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640960323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:22,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:11:22,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-21 19:11:22,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001513791] [2021-10-21 19:11:22,453 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:11:22,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:11:22,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:11:22,455 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) [2021-10-21 19:11:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:22,491 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-21 19:11:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:11:22,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 35 transitions. [2021-10-21 19:11:22,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-10-21 19:11:22,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 35 transitions. [2021-10-21 19:11:22,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-10-21 19:11:22,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-21 19:11:22,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 35 transitions. [2021-10-21 19:11:22,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:11:22,499 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-10-21 19:11:22,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 35 transitions. [2021-10-21 19:11:22,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-10-21 19:11:22,502 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) [2021-10-21 19:11:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-10-21 19:11:22,505 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-21 19:11:22,506 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-21 19:11:22,506 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:11:22,506 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 31 transitions. [2021-10-21 19:11:22,512 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-21 19:11:22,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:22,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:22,515 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:11:22,515 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 5, 5, 5, 1, 1, 1] [2021-10-21 19:11:22,515 INFO L791 eck$LassoCheckResult]: Stem: 432#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 433#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 438#L27-3 [2021-10-21 19:11:22,515 INFO L793 eck$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 [2021-10-21 19:11:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:22,516 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-21 19:11:22,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:22,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517228888] [2021-10-21 19:11:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:22,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:22,536 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:22,544 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:22,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:22,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1653313365, now seen corresponding path program 5 times [2021-10-21 19:11:22,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:22,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530507056] [2021-10-21 19:11:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:22,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:22,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:22,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530507056] [2021-10-21 19:11:22,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530507056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:22,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159838303] [2021-10-21 19:11:22,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:11:22,681 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:22,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:22,683 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:22,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:11:22,766 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-21 19:11:22,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:11:22,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:11:22,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:22,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159838303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:22,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:11:22,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 19:11:22,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937678097] [2021-10-21 19:11:22,898 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:11:22,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:22,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:11:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:11:22,899 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) [2021-10-21 19:11:22,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:22,933 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-10-21 19:11:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:11:22,934 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 40 transitions. [2021-10-21 19:11:22,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-21 19:11:22,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 40 transitions. [2021-10-21 19:11:22,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-21 19:11:22,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-10-21 19:11:22,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 40 transitions. [2021-10-21 19:11:22,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:11:22,938 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-21 19:11:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 40 transitions. [2021-10-21 19:11:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-10-21 19:11:22,946 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) [2021-10-21 19:11:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-10-21 19:11:22,947 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-21 19:11:22,947 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-21 19:11:22,947 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 19:11:22,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 36 transitions. [2021-10-21 19:11:22,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-21 19:11:22,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:22,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:22,949 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:11:22,949 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 6, 6, 6, 6, 1, 1, 1] [2021-10-21 19:11:22,949 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 [2021-10-21 19:11:22,951 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 [2021-10-21 19:11:22,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:22,951 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-10-21 19:11:22,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:22,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002938968] [2021-10-21 19:11:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:22,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:22,962 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:22,982 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:22,983 INFO L82 PathProgramCache]: Analyzing trace with hash 978226468, now seen corresponding path program 6 times [2021-10-21 19:11:22,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:22,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505538629] [2021-10-21 19:11:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:22,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:23,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:23,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505538629] [2021-10-21 19:11:23,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505538629] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:23,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024680488] [2021-10-21 19:11:23,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:11:23,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:23,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:23,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:11:23,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-21 19:11:23,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:11:23,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:11:23,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:23,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024680488] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:23,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:11:23,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-21 19:11:23,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553711865] [2021-10-21 19:11:23,390 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:11:23,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:23,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:11:23,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:11:23,392 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) [2021-10-21 19:11:23,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:23,425 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-10-21 19:11:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:11:23,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 45 transitions. [2021-10-21 19:11:23,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-10-21 19:11:23,428 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 45 transitions. [2021-10-21 19:11:23,428 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-21 19:11:23,428 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-21 19:11:23,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 45 transitions. [2021-10-21 19:11:23,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:11:23,429 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-21 19:11:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 45 transitions. [2021-10-21 19:11:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-10-21 19:11:23,432 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) [2021-10-21 19:11:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-10-21 19:11:23,434 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-21 19:11:23,434 INFO L587 BuchiCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-21 19:11:23,434 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-21 19:11:23,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 41 transitions. [2021-10-21 19:11:23,435 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-10-21 19:11:23,435 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:23,435 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:23,436 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:11:23,436 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 7, 7, 7, 7, 1, 1, 1] [2021-10-21 19:11:23,437 INFO L791 eck$LassoCheckResult]: Stem: 780#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 781#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 786#L27-3 [2021-10-21 19:11:23,437 INFO L793 eck$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 [2021-10-21 19:11:23,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:23,438 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-10-21 19:11:23,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:23,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075081531] [2021-10-21 19:11:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:23,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:23,446 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:23,453 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:23,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:23,454 INFO L82 PathProgramCache]: Analyzing trace with hash 736121931, now seen corresponding path program 7 times [2021-10-21 19:11:23,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:23,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216776091] [2021-10-21 19:11:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:23,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:23,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:11:23,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216776091] [2021-10-21 19:11:23,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216776091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:23,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028042630] [2021-10-21 19:11:23,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:11:23,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:11:23,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:23,557 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:11:23,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:11:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:23,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:11:23,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:23,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028042630] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:11:23,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:11:23,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-21 19:11:23,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586849652] [2021-10-21 19:11:23,767 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:11:23,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:11:23,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:11:23,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:11:23,768 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) [2021-10-21 19:11:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:11:23,806 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-10-21 19:11:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:11:23,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 46 transitions. [2021-10-21 19:11:23,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-21 19:11:23,809 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 46 transitions. [2021-10-21 19:11:23,809 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-21 19:11:23,810 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-21 19:11:23,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 46 transitions. [2021-10-21 19:11:23,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:11:23,811 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-21 19:11:23,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 46 transitions. [2021-10-21 19:11:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-21 19:11:23,819 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) [2021-10-21 19:11:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-10-21 19:11:23,831 INFO L704 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-21 19:11:23,831 INFO L587 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-21 19:11:23,831 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-21 19:11:23,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 46 transitions. [2021-10-21 19:11:23,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-21 19:11:23,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:23,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:23,833 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:11:23,833 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 8, 8, 8, 8, 1, 1, 1] [2021-10-21 19:11:23,833 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 [2021-10-21 19:11:23,833 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 [2021-10-21 19:11:23,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:23,834 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-10-21 19:11:23,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:23,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483700131] [2021-10-21 19:11:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:23,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:23,845 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:23,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:23,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:23,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1675619716, now seen corresponding path program 8 times [2021-10-21 19:11:23,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:23,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731519253] [2021-10-21 19:11:23,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:23,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:23,885 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:23,922 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:23,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:23,923 INFO L82 PathProgramCache]: Analyzing trace with hash -532421502, now seen corresponding path program 1 times [2021-10-21 19:11:23,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:23,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126705212] [2021-10-21 19:11:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:23,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:23,938 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:23,956 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:24,695 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:11:24,696 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:11:24,696 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:11:24,697 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:11:24,697 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:11:24,697 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:24,697 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:11:24,697 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:11:24,697 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration9_Loop [2021-10-21 19:11:24,698 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:11:24,698 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:11:24,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:24,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:24,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:24,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:24,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:24,804 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:11:24,805 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:11:24,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:24,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:24,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:24,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:11:24,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:24,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:11:24,847 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:11:24,847 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: [] [2021-10-21 19:11:24,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:24,871 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:24,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:24,873 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:24,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:11:24,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:11:24,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:24,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:24,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:24,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:24,952 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:24,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:11:24,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:11:24,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:25,055 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:11:25,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:25,059 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:11:25,059 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:11:25,059 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:11:25,059 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:11:25,059 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:11:25,059 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:25,060 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:11:25,060 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:11:25,060 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration9_Loop [2021-10-21 19:11:25,060 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:11:25,060 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:11:25,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:25,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:25,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:25,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:25,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:25,194 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:11:25,199 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:11:25,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:25,202 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:25,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:11:25,208 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:11:25,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:11:25,220 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:11:25,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:11:25,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:11:25,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:11:25,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:11:25,224 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:11:25,235 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:11:25,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:25,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:25,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:25,325 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:25,332 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:11:25,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:11:25,344 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:11:25,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:11:25,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:11:25,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:11:25,346 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:11:25,346 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:11:25,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:11:25,349 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:11:25,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:25,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:25,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:25,392 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:25,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 19:11:25,394 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:11:25,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:11:25,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:11:25,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:11:25,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:11:25,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:11:25,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:11:25,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:11:25,408 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:11:25,413 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 19:11:25,413 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:11:25,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:25,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:25,419 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:25,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:11:25,425 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:11:25,425 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:11:25,425 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:11:25,426 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 [] [2021-10-21 19:11:25,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:25,453 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:11:25,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:25,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:11:25,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:25,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:11:25,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-21 19:11:25,896 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-21 19:11:25,897 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) [2021-10-21 19:11:25,939 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. [2021-10-21 19:11:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 19:11:25,940 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) [2021-10-21 19:11:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-21 19:11:25,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 43 letters. [2021-10-21 19:11:25,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:25,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 45 letters. Loop has 43 letters. [2021-10-21 19:11:25,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:25,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 86 letters. [2021-10-21 19:11:25,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:25,954 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 91 transitions. [2021-10-21 19:11:25,956 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:11:25,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 87 states and 90 transitions. [2021-10-21 19:11:25,960 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2021-10-21 19:11:25,961 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-21 19:11:25,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 90 transitions. [2021-10-21 19:11:25,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:11:25,962 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 90 transitions. [2021-10-21 19:11:25,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 90 transitions. [2021-10-21 19:11:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 51. [2021-10-21 19:11:25,973 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) [2021-10-21 19:11:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-10-21 19:11:25,973 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-10-21 19:11:25,973 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-10-21 19:11:25,974 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-21 19:11:25,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 54 transitions. [2021-10-21 19:11:25,976 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:11:25,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:25,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:25,977 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-21 19:11:25,977 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-21 19:11:25,977 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 [2021-10-21 19:11:25,978 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 [2021-10-21 19:11:25,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:25,980 INFO L82 PathProgramCache]: Analyzing trace with hash 29863, now seen corresponding path program 1 times [2021-10-21 19:11:25,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:25,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934984564] [2021-10-21 19:11:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:25,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:25,990 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:26,001 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:26,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:26,002 INFO L82 PathProgramCache]: Analyzing trace with hash 46025336, now seen corresponding path program 1 times [2021-10-21 19:11:26,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:26,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224664433] [2021-10-21 19:11:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:26,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:26,012 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:26,029 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:26,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:26,029 INFO L82 PathProgramCache]: Analyzing trace with hash 271240594, now seen corresponding path program 1 times [2021-10-21 19:11:26,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:26,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2404922] [2021-10-21 19:11:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:26,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:26,043 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:26,067 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:26,147 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:11:26,147 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:11:26,147 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:11:26,147 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:11:26,147 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:11:26,147 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,147 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:11:26,148 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:11:26,148 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration10_Loop [2021-10-21 19:11:26,148 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:11:26,148 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:11:26,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:26,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:26,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:26,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:26,256 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:11:26,257 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:11:26,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:26,263 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:26,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:26,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:11:26,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:11:26,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:26,316 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:11:26,316 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: [] [2021-10-21 19:11:26,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:26,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:26,364 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:26,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 19:11:26,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:11:26,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:26,392 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:11:26,393 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: [] [2021-10-21 19:11:26,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:26,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:26,441 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:26,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:11:26,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:26,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 19:11:26,475 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:11:26,475 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: [] [2021-10-21 19:11:26,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:26,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:26,527 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:26,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:11:26,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:26,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 19:11:26,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-10-21 19:11:26,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:26,606 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:26,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 19:11:26,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:11:26,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:26,667 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:11:26,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:26,670 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:11:26,670 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:11:26,670 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:11:26,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:11:26,670 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:11:26,670 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,670 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:11:26,670 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:11:26,671 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration10_Loop [2021-10-21 19:11:26,671 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:11:26,671 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:11:26,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:26,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:26,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:26,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:26,749 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:11:26,749 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:11:26,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:26,751 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:26,766 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:11:26,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:11:26,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:11:26,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:11:26,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:11:26,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:11:26,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:11:26,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:11:26,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 19:11:26,792 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:11:26,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:26,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:26,842 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:26,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-21 19:11:26,850 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:11:26,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:11:26,861 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:11:26,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:11:26,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:11:26,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:11:26,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:11:26,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:11:26,875 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:11:26,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:26,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:26,920 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:26,929 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:11:26,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:11:26,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:11:26,940 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:11:26,940 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:11:26,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:11:26,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:11:26,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:11:26,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 19:11:26,956 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:11:26,964 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:11:26,964 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:11:26,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:26,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:26,966 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:26,974 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:11:26,974 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:11:26,974 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:11:26,974 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 15 Supporting invariants [] [2021-10-21 19:11:26,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-21 19:11:27,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:27,025 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:11:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:27,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:11:27,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:27,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:11:27,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:27,109 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-21 19:11:27,110 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) [2021-10-21 19:11:27,138 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. [2021-10-21 19:11:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:11:27,140 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) [2021-10-21 19:11:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-21 19:11:27,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 5 letters. [2021-10-21 19:11:27,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:27,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 5 letters. [2021-10-21 19:11:27,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:27,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 10 letters. [2021-10-21 19:11:27,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:27,142 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 145 transitions. [2021-10-21 19:11:27,146 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:11:27,148 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 94 states and 98 transitions. [2021-10-21 19:11:27,148 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-21 19:11:27,148 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-21 19:11:27,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 98 transitions. [2021-10-21 19:11:27,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:11:27,154 INFO L681 BuchiCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-10-21 19:11:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 98 transitions. [2021-10-21 19:11:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 51. [2021-10-21 19:11:27,162 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) [2021-10-21 19:11:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-10-21 19:11:27,165 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-21 19:11:27,165 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-21 19:11:27,165 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-21 19:11:27,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 53 transitions. [2021-10-21 19:11:27,166 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-21 19:11:27,166 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:11:27,166 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:11:27,171 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 8, 8, 8, 2, 1, 1, 1, 1] [2021-10-21 19:11:27,172 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-21 19:11:27,174 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 [2021-10-21 19:11:27,174 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 [2021-10-21 19:11:27,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:27,175 INFO L82 PathProgramCache]: Analyzing trace with hash 674802632, now seen corresponding path program 2 times [2021-10-21 19:11:27,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:27,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703711167] [2021-10-21 19:11:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:27,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:27,199 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:27,243 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:27,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:27,246 INFO L82 PathProgramCache]: Analyzing trace with hash 46025336, now seen corresponding path program 2 times [2021-10-21 19:11:27,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:27,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540296006] [2021-10-21 19:11:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:27,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:27,257 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:27,266 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:27,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1573708561, now seen corresponding path program 3 times [2021-10-21 19:11:27,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:11:27,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473316901] [2021-10-21 19:11:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:11:27,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:11:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:27,302 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:11:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:11:27,339 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:11:27,415 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:11:27,415 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:11:27,415 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:11:27,415 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:11:27,416 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:11:27,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:27,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:11:27,416 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:11:27,416 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration11_Loop [2021-10-21 19:11:27,416 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:11:27,417 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:11:27,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:27,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:27,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:27,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:27,484 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:11:27,485 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:11:27,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:27,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:27,488 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:27,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:11:27,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:27,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 19:11:27,527 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:11:27,528 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: [] [2021-10-21 19:11:27,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:27,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:27,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:27,571 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:27,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:11:27,584 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:27,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 19:11:27,612 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:11:27,612 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: [] [2021-10-21 19:11:27,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:27,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:27,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:27,656 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:27,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:11:27,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:27,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 19:11:27,692 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:11:27,692 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: [] [2021-10-21 19:11:27,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:27,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:27,736 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:27,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:11:27,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:27,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 19:11:27,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:27,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:27,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:27,806 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:27,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:11:27,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:11:27,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-21 19:11:27,888 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:11:27,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:27,900 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:11:27,900 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:11:27,900 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:11:27,900 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:11:27,900 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:11:27,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:27,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:11:27,901 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:11:27,901 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration11_Loop [2021-10-21 19:11:27,901 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:11:27,901 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:11:27,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:27,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:27,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:27,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:11:27,975 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:11:27,976 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:11:27,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:27,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:27,977 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:27,980 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:11:27,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:11:27,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:11:27,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:11:27,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:11:27,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:11:27,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:11:27,993 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:11:27,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-21 19:11:28,004 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:11:28,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-21 19:11:28,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:28,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:28,035 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:28,042 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:11:28,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-21 19:11:28,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:11:28,052 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:11:28,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:11:28,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:11:28,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:11:28,053 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:11:28,053 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:11:28,070 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:11:28,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-10-21 19:11:28,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:28,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:28,108 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:28,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 19:11:28,110 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:11:28,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:11:28,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:11:28,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:11:28,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:11:28,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:11:28,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:11:28,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:11:28,132 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:11:28,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:28,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:28,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:28,164 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:28,166 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:11:28,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:11:28,178 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:11:28,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:11:28,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:11:28,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:11:28,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:11:28,180 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:11:28,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-21 19:11:28,191 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:11:28,201 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:11:28,202 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:11:28,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:11:28,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:11:28,204 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:11:28,205 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:11:28,206 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:11:28,206 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:11:28,206 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 15 Supporting invariants [] [2021-10-21 19:11:28,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-21 19:11:28,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:28,248 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:11:28,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:28,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:11:28,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:28,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:28,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:28,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:11:28,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:28,606 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-21 19:11:28,607 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) [2021-10-21 19:11:28,636 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. [2021-10-21 19:11:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:11:28,637 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) [2021-10-21 19:11:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-21 19:11:28,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-21 19:11:28,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:28,638 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:11:28,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:28,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:11:28,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:28,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:11:28,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:28,902 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-21 19:11:28,902 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) [2021-10-21 19:11:28,924 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. [2021-10-21 19:11:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:11:28,925 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) [2021-10-21 19:11:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-21 19:11:28,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-21 19:11:28,925 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:28,926 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:11:28,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:11:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:28,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:11:28,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:11:29,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:11:29,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:11:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:11:29,217 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-21 19:11:29,217 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) [2021-10-21 19:11:29,239 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. [2021-10-21 19:11:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:11:29,240 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) [2021-10-21 19:11:29,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-21 19:11:29,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-21 19:11:29,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:29,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 51 letters. Loop has 5 letters. [2021-10-21 19:11:29,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:29,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 10 letters. [2021-10-21 19:11:29,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:11:29,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 94 transitions. [2021-10-21 19:11:29,245 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:11:29,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 0 states and 0 transitions. [2021-10-21 19:11:29,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:11:29,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:11:29,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:11:29,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:11:29,246 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:11:29,246 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:11:29,246 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:11:29,247 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-21 19:11:29,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:11:29,247 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:11:29,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:11:29,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:11:29 BoogieIcfgContainer [2021-10-21 19:11:29,256 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:11:29,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:11:29,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:11:29,257 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:11:29,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:11:20" (3/4) ... [2021-10-21 19:11:29,261 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:11:29,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:11:29,263 INFO L168 Benchmark]: Toolchain (without parser) took 9297.84 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 56.9 MB in the beginning and 47.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:11:29,264 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:11:29,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.68 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 68.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:11:29,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.24 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 66.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:11:29,266 INFO L168 Benchmark]: Boogie Preprocessor took 22.12 ms. Allocated memory is still 92.3 MB. Free memory was 66.9 MB in the beginning and 66.0 MB in the end (delta: 968.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:11:29,266 INFO L168 Benchmark]: RCFGBuilder took 259.66 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 56.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:11:29,267 INFO L168 Benchmark]: BuchiAutomizer took 8671.22 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 56.5 MB in the beginning and 47.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 52.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:11:29,267 INFO L168 Benchmark]: Witness Printer took 5.12 ms. Allocated memory is still 134.2 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:11:29,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.68 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 68.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.24 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 66.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.12 ms. Allocated memory is still 92.3 MB. Free memory was 66.9 MB in the beginning and 66.0 MB in the end (delta: 968.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 259.66 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 56.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8671.22 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 56.5 MB in the beginning and 47.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 52.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.12 ms. Allocated memory is still 134.2 MB. Free memory is still 47.3 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 8.6s and 12 iterations. TraceHistogramMax:8. Analysis of lassos took 6.4s. Construction of modules took 0.1s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 9. Minimization of nondet autom 2. Automata minimization 87.5ms 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, 185.6ms 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: 34ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 19:11:29,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:29,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-21 19:11:29,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-21 19:11:29,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-21 19:11:30,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-21 19:11:30,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:11:30,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-21 19:11:30,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbf13bf-1e2b-46b7-b838-337db2de7d5d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...