./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/nec11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/nec11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg --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 b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:34:27,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:34:27,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:34:27,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:34:27,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:34:27,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:34:27,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:34:27,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:34:27,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:34:27,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:34:27,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:34:27,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:34:27,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:34:27,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:34:27,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:34:27,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:34:27,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:34:27,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:34:27,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:34:27,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:34:27,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:34:27,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:34:27,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:34:27,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:34:27,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:34:27,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:34:27,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:34:27,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:34:27,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:34:27,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:34:27,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:34:27,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:34:27,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:34:27,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:34:27,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:34:27,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:34:27,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:34:27,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:34:27,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:34:27,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:34:27,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:34:27,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 08:34:27,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:34:27,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:34:27,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:34:27,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:34:27,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:34:27,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:34:27,553 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:34:27,553 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 08:34:27,554 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 08:34:27,554 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 08:34:27,555 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 08:34:27,556 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 08:34:27,556 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 08:34:27,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:34:27,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:34:27,557 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:34:27,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:34:27,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:34:27,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:34:27,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 08:34:27,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 08:34:27,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 08:34:27,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:34:27,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:34:27,560 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 08:34:27,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:34:27,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 08:34:27,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:34:27,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:34:27,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:34:27,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:34:27,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:34:27,566 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 08:34:27,567 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_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 [2021-10-28 08:34:27,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:34:27,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:34:27,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:34:27,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:34:27,971 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:34:27,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loops/nec11.c [2021-10-28 08:34:28,072 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/data/e0104f9f1/7905510af9094dcb84049f64e4f03c8f/FLAG16a9e3f6e [2021-10-28 08:34:28,640 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:34:28,641 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/sv-benchmarks/c/loops/nec11.c [2021-10-28 08:34:28,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/data/e0104f9f1/7905510af9094dcb84049f64e4f03c8f/FLAG16a9e3f6e [2021-10-28 08:34:28,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/data/e0104f9f1/7905510af9094dcb84049f64e4f03c8f [2021-10-28 08:34:28,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:34:28,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:34:28,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:28,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:34:29,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:34:29,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:28" (1/1) ... [2021-10-28 08:34:29,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f705c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29, skipping insertion in model container [2021-10-28 08:34:29,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:28" (1/1) ... [2021-10-28 08:34:29,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:34:29,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:34:29,242 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_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/sv-benchmarks/c/loops/nec11.c[317,330] [2021-10-28 08:34:29,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:29,267 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:34:29,280 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_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/sv-benchmarks/c/loops/nec11.c[317,330] [2021-10-28 08:34:29,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:29,300 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:34:29,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29 WrapperNode [2021-10-28 08:34:29,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:29,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:34:29,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:34:29,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:34:29,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (1/1) ... [2021-10-28 08:34:29,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (1/1) ... [2021-10-28 08:34:29,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:34:29,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:34:29,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:34:29,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:34:29,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (1/1) ... [2021-10-28 08:34:29,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (1/1) ... [2021-10-28 08:34:29,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (1/1) ... [2021-10-28 08:34:29,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (1/1) ... [2021-10-28 08:34:29,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (1/1) ... [2021-10-28 08:34:29,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (1/1) ... [2021-10-28 08:34:29,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (1/1) ... [2021-10-28 08:34:29,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:34:29,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:34:29,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:34:29,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:34:29,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (1/1) ... [2021-10-28 08:34:29,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:29,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:29,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:29,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 08:34:29,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:34:29,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:34:29,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:34:29,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:34:29,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:34:29,687 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 08:34:29,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:29 BoogieIcfgContainer [2021-10-28 08:34:29,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:34:29,691 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 08:34:29,691 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 08:34:29,695 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 08:34:29,696 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:34:29,697 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 08:34:28" (1/3) ... [2021-10-28 08:34:29,698 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9eea7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:34:29, skipping insertion in model container [2021-10-28 08:34:29,699 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:34:29,699 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:29" (2/3) ... [2021-10-28 08:34:29,699 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9eea7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:34:29, skipping insertion in model container [2021-10-28 08:34:29,700 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:34:29,700 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:29" (3/3) ... [2021-10-28 08:34:29,702 INFO L389 chiAutomizerObserver]: Analyzing ICFG nec11.c [2021-10-28 08:34:29,762 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 08:34:29,762 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 08:34:29,762 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 08:34:29,763 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 08:34:29,763 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 08:34:29,763 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 08:34:29,763 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 08:34:29,763 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 08:34:29,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:29,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:34:29,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:34:29,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:34:29,811 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:34:29,811 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:34:29,811 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 08:34:29,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:29,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:34:29,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:34:29,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:34:29,814 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:34:29,814 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:34:29,823 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~post8, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~i~0; 10#L21-2true [2021-10-28 08:34:29,823 INFO L793 eck$LassoCheckResult]: Loop: 10#L21-2true assume !!(0 != main_~c~0 % 256); 9#L23true assume !(4 == main_~len~0); 8#L23-2true assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 10#L21-2true [2021-10-28 08:34:29,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 08:34:29,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:29,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869339434] [2021-10-28 08:34:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:29,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:29,964 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:30,011 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:30,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2021-10-28 08:34:30,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:30,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789963276] [2021-10-28 08:34:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:30,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:30,027 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:30,039 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:30,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:30,042 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2021-10-28 08:34:30,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:30,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502103528] [2021-10-28 08:34:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:30,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:30,072 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:30,104 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:30,746 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:34:30,746 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:34:30,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:34:30,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:34:30,747 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:34:30,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:30,748 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:34:30,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:34:30,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: nec11.c_Iteration1_Lasso [2021-10-28 08:34:30,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:34:30,748 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:34:30,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:30,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:30,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:30,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:30,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:30,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:30,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:30,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:30,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:30,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:30,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:34:31,223 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:34:31,228 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:34:31,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:31,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:31,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:31,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 08:34:31,247 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:31,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:31,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:31,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:31,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:31,272 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:31,272 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:31,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:31,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:31,326 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:31,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:31,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:31,337 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:31,347 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:31,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:34:31,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:31,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:31,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:31,352 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:34:31,353 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:34:31,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 08:34:31,368 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:31,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:31,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:31,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:31,417 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:31,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:31,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:31,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:31,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:31,433 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:31,433 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:31,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 08:34:31,460 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:31,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:31,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:31,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:31,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:31,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 08:34:31,505 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:31,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:31,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:31,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:31,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:31,523 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:31,524 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:31,537 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:31,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:31,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:31,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:31,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:31,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 08:34:31,593 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:31,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:31,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:31,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:31,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:31,610 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:31,610 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:31,636 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:31,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:31,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:31,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:31,667 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:31,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 08:34:31,670 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:31,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:31,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:31,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:31,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:31,686 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:31,686 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:31,696 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:31,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:31,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:31,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:31,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:31,749 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:31,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 08:34:31,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:31,760 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:31,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:31,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:31,766 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:31,767 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:31,792 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:31,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:31,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:31,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:31,837 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:31,844 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:31,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:31,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:31,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:31,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:31,859 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:31,860 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:31,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 08:34:31,880 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:31,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:31,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:31,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:31,922 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:31,930 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:31,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:31,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:31,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:31,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:31,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 08:34:31,944 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:31,944 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:31,960 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:31,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:31,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:31,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,000 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,007 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:32,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:32,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:32,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:32,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:32,021 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:32,021 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:32,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 08:34:32,028 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:32,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:32,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:32,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,080 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:32,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:32,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:32,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:32,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:32,096 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:32,096 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:32,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 08:34:32,116 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:32,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:32,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:32,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,151 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 08:34:32,153 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:32,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:32,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:32,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:32,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:32,165 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:32,165 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:32,188 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:32,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:32,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:32,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,214 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 08:34:32,220 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:32,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:32,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:32,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:32,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:32,234 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:32,234 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:32,256 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:32,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:32,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:32,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,294 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 08:34:32,304 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:32,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:32,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:34:32,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:32,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:32,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:32,315 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:34:32,315 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:34:32,317 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:32,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:32,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:32,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,340 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 08:34:32,343 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:32,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:32,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:32,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:32,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:32,357 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:32,357 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:32,368 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:32,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:32,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:32,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,404 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 08:34:32,407 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:32,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:32,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:34:32,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:32,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:32,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:32,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:34:32,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:34:32,440 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:32,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:32,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,477 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,485 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:32,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 08:34:32,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:32,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:34:32,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:32,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:32,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:32,495 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:34:32,496 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:34:32,497 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:32,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-10-28 08:34:32,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:32,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,519 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 08:34:32,521 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:32,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:32,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:34:32,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:32,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:32,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:32,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:34:32,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:34:32,536 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:34:32,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:32,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:32,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,562 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 08:34:32,569 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:34:32,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:34:32,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:34:32,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:34:32,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:34:32,580 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:34:32,580 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:34:32,604 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:34:32,622 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-10-28 08:34:32,623 INFO L444 ModelExtractionUtils]: 0 out of 7 variables were initially zero. Simplification set additionally 4 variables to zero. [2021-10-28 08:34:32,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:34:32,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:32,632 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:32,646 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:34:32,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 08:34:32,669 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 08:34:32,670 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:34:32,670 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~len~0) = -2*ULTIMATE.start_main_~len~0 + 7 Supporting invariants [] [2021-10-28 08:34:32,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:32,727 INFO L297 tatePredicateManager]: 7 out of 7 supporting invariants were superfluous and have been removed [2021-10-28 08:34:32,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:32,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:34:32,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:32,782 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:34:32,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:32,826 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 08:34:32,828 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:32,873 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 39 states and 49 transitions. Complement of second has 8 states. [2021-10-28 08:34:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:34:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-10-28 08:34:32,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 3 letters. [2021-10-28 08:34:32,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:34:32,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-28 08:34:32,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:34:32,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 6 letters. [2021-10-28 08:34:32,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:34:32,880 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 49 transitions. [2021-10-28 08:34:32,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:34:32,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 10 states and 13 transitions. [2021-10-28 08:34:32,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:34:32,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 08:34:32,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2021-10-28 08:34:32,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:34:32,890 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-10-28 08:34:32,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2021-10-28 08:34:32,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-28 08:34:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-10-28 08:34:32,917 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-10-28 08:34:32,917 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-10-28 08:34:32,917 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 08:34:32,917 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2021-10-28 08:34:32,918 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:34:32,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:34:32,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:34:32,919 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 08:34:32,919 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:34:32,919 INFO L791 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 123#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~post8, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~i~0; 130#L21-2 assume !!(0 != main_~c~0 % 256); 128#L23 assume 4 == main_~len~0;main_~len~0 := 0; 124#L23-2 [2021-10-28 08:34:32,919 INFO L793 eck$LassoCheckResult]: Loop: 124#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 125#L21-2 assume !!(0 != main_~c~0 % 256); 131#L23 assume !(4 == main_~len~0); 124#L23-2 [2021-10-28 08:34:32,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:32,920 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-10-28 08:34:32,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:32,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467353183] [2021-10-28 08:34:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:32,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:32,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:32,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467353183] [2021-10-28 08:34:32,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467353183] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:32,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:32,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:34:32,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748390653] [2021-10-28 08:34:32,975 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:34:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 2 times [2021-10-28 08:34:32,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:32,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969776204] [2021-10-28 08:34:32,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:32,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:32,983 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:32,991 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:33,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:34:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:34:33,035 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:33,045 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2021-10-28 08:34:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:34:33,046 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2021-10-28 08:34:33,047 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 08:34:33,048 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 15 transitions. [2021-10-28 08:34:33,048 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 08:34:33,048 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-28 08:34:33,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2021-10-28 08:34:33,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:34:33,049 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-28 08:34:33,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2021-10-28 08:34:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2021-10-28 08:34:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-28 08:34:33,051 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-28 08:34:33,051 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-28 08:34:33,051 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 08:34:33,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2021-10-28 08:34:33,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:34:33,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:34:33,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:34:33,052 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-28 08:34:33,053 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:34:33,053 INFO L791 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 153#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~post8, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~i~0; 161#L21-2 assume !!(0 != main_~c~0 % 256); 159#L23 assume !(4 == main_~len~0); 156#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 157#L21-2 assume !!(0 != main_~c~0 % 256); 158#L23 assume 4 == main_~len~0;main_~len~0 := 0; 154#L23-2 [2021-10-28 08:34:33,053 INFO L793 eck$LassoCheckResult]: Loop: 154#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 155#L21-2 assume !!(0 != main_~c~0 % 256); 160#L23 assume !(4 == main_~len~0); 154#L23-2 [2021-10-28 08:34:33,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:33,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1810721677, now seen corresponding path program 1 times [2021-10-28 08:34:33,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:33,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609942241] [2021-10-28 08:34:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:33,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:33,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:33,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:33,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609942241] [2021-10-28 08:34:33,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609942241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:34:33,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490518018] [2021-10-28 08:34:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:33,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:34:33,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:33,165 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:34:33,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 08:34:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:33,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 08:34:33,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:33,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490518018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:34:33,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:34:33,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-28 08:34:33,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417345704] [2021-10-28 08:34:33,280 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:34:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:33,281 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 3 times [2021-10-28 08:34:33,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:33,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484874406] [2021-10-28 08:34:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:33,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:33,293 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:33,298 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:33,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:33,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:33,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:33,362 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:33,388 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-10-28 08:34:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:34:33,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2021-10-28 08:34:33,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 08:34:33,392 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 21 transitions. [2021-10-28 08:34:33,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 08:34:33,395 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 08:34:33,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2021-10-28 08:34:33,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:34:33,396 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-28 08:34:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2021-10-28 08:34:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-10-28 08:34:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 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) [2021-10-28 08:34:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-28 08:34:33,400 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-28 08:34:33,400 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-28 08:34:33,400 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 08:34:33,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2021-10-28 08:34:33,403 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-28 08:34:33,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:34:33,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:34:33,405 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1] [2021-10-28 08:34:33,405 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2021-10-28 08:34:33,405 INFO L791 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 209#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~post8, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~i~0; 218#L21-2 assume !!(0 != main_~c~0 % 256); 219#L23 assume !(4 == main_~len~0); 220#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 217#L21-2 assume !!(0 != main_~c~0 % 256); 215#L23 assume !(4 == main_~len~0); 212#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 213#L21-2 assume !!(0 != main_~c~0 % 256); 214#L23 assume 4 == main_~len~0;main_~len~0 := 0; 210#L23-2 [2021-10-28 08:34:33,406 INFO L793 eck$LassoCheckResult]: Loop: 210#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 211#L21-2 assume !!(0 != main_~c~0 % 256); 216#L23 assume !(4 == main_~len~0); 221#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 223#L21-2 assume !!(0 != main_~c~0 % 256); 222#L23 assume 4 == main_~len~0;main_~len~0 := 0; 210#L23-2 [2021-10-28 08:34:33,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1579681018, now seen corresponding path program 2 times [2021-10-28 08:34:33,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:33,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173305225] [2021-10-28 08:34:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:33,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:33,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:33,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173305225] [2021-10-28 08:34:33,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173305225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:34:33,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511950216] [2021-10-28 08:34:33,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:34:33,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:34:33,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:33,500 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:34:33,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 08:34:33,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:34:33,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:34:33,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:34:33,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:33,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511950216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:34:33,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:34:33,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-28 08:34:33,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38514116] [2021-10-28 08:34:33,613 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:34:33,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:33,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1413481439, now seen corresponding path program 1 times [2021-10-28 08:34:33,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:33,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992818154] [2021-10-28 08:34:33,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:33,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:33,635 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:33,650 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:33,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:34:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:34:33,728 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:33,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:33,752 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-10-28 08:34:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:34:33,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 28 transitions. [2021-10-28 08:34:33,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:34:33,759 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 27 transitions. [2021-10-28 08:34:33,759 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-28 08:34:33,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-28 08:34:33,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 27 transitions. [2021-10-28 08:34:33,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:34:33,760 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-28 08:34:33,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 27 transitions. [2021-10-28 08:34:33,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-10-28 08:34:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-28 08:34:33,770 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-28 08:34:33,770 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-28 08:34:33,770 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 08:34:33,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 24 transitions. [2021-10-28 08:34:33,773 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 08:34:33,773 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:34:33,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:34:33,774 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 1, 1, 1] [2021-10-28 08:34:33,774 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2021-10-28 08:34:33,774 INFO L791 eck$LassoCheckResult]: Stem: 286#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 287#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~post8, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~i~0; 297#L21-2 assume !!(0 != main_~c~0 % 256); 298#L23 assume !(4 == main_~len~0); 302#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 296#L21-2 assume !!(0 != main_~c~0 % 256); 294#L23 assume !(4 == main_~len~0); 290#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 291#L21-2 assume !!(0 != main_~c~0 % 256); 300#L23 assume !(4 == main_~len~0); 301#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 299#L21-2 assume !!(0 != main_~c~0 % 256); 292#L23 assume 4 == main_~len~0;main_~len~0 := 0; 293#L23-2 [2021-10-28 08:34:33,775 INFO L793 eck$LassoCheckResult]: Loop: 293#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 307#L21-2 assume !!(0 != main_~c~0 % 256); 303#L23 assume !(4 == main_~len~0); 288#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 289#L21-2 assume !!(0 != main_~c~0 % 256); 295#L23 assume !(4 == main_~len~0); 305#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 306#L21-2 assume !!(0 != main_~c~0 % 256); 304#L23 assume 4 == main_~len~0;main_~len~0 := 0; 293#L23-2 [2021-10-28 08:34:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash -320467731, now seen corresponding path program 3 times [2021-10-28 08:34:33,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:33,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994658731] [2021-10-28 08:34:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:33,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:33,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:33,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:33,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994658731] [2021-10-28 08:34:33,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994658731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:34:33,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361386394] [2021-10-28 08:34:33,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 08:34:33,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:34:33,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:33,844 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:34:33,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 08:34:33,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 08:34:33,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:34:33,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:34:33,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:34:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:33,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361386394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:34:33,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:34:33,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-28 08:34:33,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351326524] [2021-10-28 08:34:33,968 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:34:33,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1166256500, now seen corresponding path program 2 times [2021-10-28 08:34:33,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:33,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188268362] [2021-10-28 08:34:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:33,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:33,976 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:33,984 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:34,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:34,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:34:34,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:34:34,060 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. cyclomatic complexity: 4 Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:34,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:34:34,084 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-10-28 08:34:34,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:34:34,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 34 transitions. [2021-10-28 08:34:34,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 08:34:34,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 31 states and 33 transitions. [2021-10-28 08:34:34,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 08:34:34,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 08:34:34,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 33 transitions. [2021-10-28 08:34:34,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:34:34,087 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-10-28 08:34:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 33 transitions. [2021-10-28 08:34:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-10-28 08:34:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:34:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-28 08:34:34,096 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-28 08:34:34,096 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-28 08:34:34,096 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 08:34:34,096 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 30 transitions. [2021-10-28 08:34:34,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 08:34:34,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:34:34,097 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:34:34,098 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 1, 1, 1] [2021-10-28 08:34:34,098 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2021-10-28 08:34:34,099 INFO L791 eck$LassoCheckResult]: Stem: 386#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 387#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~post8, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~i~0; 397#L21-2 assume !!(0 != main_~c~0 % 256); 394#L23 assume !(4 == main_~len~0); 390#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 391#L21-2 assume !!(0 != main_~c~0 % 256); 396#L23 assume !(4 == main_~len~0); 405#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 404#L21-2 assume !!(0 != main_~c~0 % 256); 403#L23 assume !(4 == main_~len~0); 402#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 401#L21-2 assume !!(0 != main_~c~0 % 256); 399#L23 assume !(4 == main_~len~0); 400#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 398#L21-2 assume !!(0 != main_~c~0 % 256); 392#L23 assume 4 == main_~len~0;main_~len~0 := 0; 393#L23-2 [2021-10-28 08:34:34,099 INFO L793 eck$LassoCheckResult]: Loop: 393#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 413#L21-2 assume !!(0 != main_~c~0 % 256); 406#L23 assume !(4 == main_~len~0); 388#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 389#L21-2 assume !!(0 != main_~c~0 % 256); 395#L23 assume !(4 == main_~len~0); 412#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 411#L21-2 assume !!(0 != main_~c~0 % 256); 410#L23 assume !(4 == main_~len~0); 408#L23-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post8 := main_~len~0;main_~len~0 := 1 + main_#t~post8;havoc main_#t~post8; 409#L21-2 assume !!(0 != main_~c~0 % 256); 407#L23 assume 4 == main_~len~0;main_~len~0 := 0; 393#L23-2 [2021-10-28 08:34:34,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:34,099 INFO L85 PathProgramCache]: Analyzing trace with hash 658202022, now seen corresponding path program 4 times [2021-10-28 08:34:34,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:34,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374067972] [2021-10-28 08:34:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:34,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:34,116 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:34,135 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:34,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:34,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1957011391, now seen corresponding path program 3 times [2021-10-28 08:34:34,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:34,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643016611] [2021-10-28 08:34:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:34,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:34,145 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:34,154 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash -282022428, now seen corresponding path program 5 times [2021-10-28 08:34:34,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:34,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112761137] [2021-10-28 08:34:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:34,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:34,204 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:34:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:34:34,248 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:34:34,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-10-28 08:34:34,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 08:34:34 BoogieIcfgContainer [2021-10-28 08:34:34,878 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 08:34:34,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:34:34,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:34:34,879 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:34:34,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:29" (3/4) ... [2021-10-28 08:34:34,881 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 08:34:34,925 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:34:34,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:34:34,927 INFO L168 Benchmark]: Toolchain (without parser) took 5932.90 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 84.9 MB in the beginning and 109.6 MB in the end (delta: -24.7 MB). Peak memory consumption was 52.5 kB. Max. memory is 16.1 GB. [2021-10-28 08:34:34,933 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 121.6 MB. Free memory was 94.0 MB in the beginning and 94.0 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:34:34,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.27 ms. Allocated memory is still 121.6 MB. Free memory was 84.6 MB in the beginning and 95.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:34,934 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.10 ms. Allocated memory is still 121.6 MB. Free memory was 95.9 MB in the beginning and 94.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:34,934 INFO L168 Benchmark]: Boogie Preprocessor took 26.64 ms. Allocated memory is still 121.6 MB. Free memory was 94.3 MB in the beginning and 93.7 MB in the end (delta: 644.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:34:34,934 INFO L168 Benchmark]: RCFGBuilder took 323.58 ms. Allocated memory is still 121.6 MB. Free memory was 93.0 MB in the beginning and 84.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:34,935 INFO L168 Benchmark]: BuchiAutomizer took 5187.48 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 84.0 MB in the beginning and 111.7 MB in the end (delta: -27.7 MB). Peak memory consumption was 70.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:34,935 INFO L168 Benchmark]: Witness Printer took 46.54 ms. Allocated memory is still 146.8 MB. Free memory was 111.7 MB in the beginning and 109.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:34,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 121.6 MB. Free memory was 94.0 MB in the beginning and 94.0 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.27 ms. Allocated memory is still 121.6 MB. Free memory was 84.6 MB in the beginning and 95.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.10 ms. Allocated memory is still 121.6 MB. Free memory was 95.9 MB in the beginning and 94.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.64 ms. Allocated memory is still 121.6 MB. Free memory was 94.3 MB in the beginning and 93.7 MB in the end (delta: 644.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 323.58 ms. Allocated memory is still 121.6 MB. Free memory was 93.0 MB in the beginning and 84.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5187.48 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 84.0 MB in the beginning and 111.7 MB in the end (delta: -27.7 MB). Peak memory consumption was 70.1 MB. Max. memory is 16.1 GB. * Witness Printer took 46.54 ms. Allocated memory is still 146.8 MB. Free memory was 111.7 MB in the beginning and 109.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function 7 + -2 * len and consists of 5 locations. 4 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 28 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 6 iterations. TraceHistogramMax:5. Analysis of lassos took 4.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 28 states and ocurred in iteration 5. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 20 SDslu, 33 SDs, 0 SdLazy, 41 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU4 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital135 mio100 ax100 hnf100 lsp68 ukn47 mio100 lsp43 div236 bol100 ite100 ukn100 eq144 hnf49 smp78 dnf100 smp100 tf100 neg95 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 59ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 21]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=30823} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=30824, NULL=0, \result=0, NULL=30826, c=257, NULL=30823, i=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37524ece=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@269b48c4=0, NULL=0, len=0, NULL=30825} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int a[5]; [L16] int len=0; [L17] _Bool c=__VERIFIER_nondet_bool(); [L18] int i; [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND TRUE len==4 [L24] len =0 Loop: [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND TRUE len==4 [L24] len =0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 08:34:35,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 08:34:35,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-28 08:34:35,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-28 08:34:35,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb20beca-feaf-4cf2-a5c3-008d84a2b12f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...