./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: no settings was sufficient --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:18:01,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:18:01,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:18:01,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:18:01,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:18:01,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:18:01,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:18:01,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:18:01,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:18:01,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:18:01,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:18:01,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:18:01,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:18:01,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:18:01,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:18:01,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:18:01,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:18:01,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:18:01,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:18:01,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:18:01,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:18:01,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:18:01,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:18:01,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:18:01,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:18:01,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:18:01,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:18:01,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:18:01,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:18:01,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:18:01,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:18:01,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:18:01,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:18:01,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:18:01,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:18:01,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:18:01,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:18:01,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:18:01,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:18:01,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:18:01,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:18:01,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:18:01,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:18:01,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:18:01,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:18:01,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:18:01,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:18:01,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:18:01,652 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:18:01,652 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:18:01,653 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:18:01,653 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:18:01,653 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:18:01,653 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:18:01,654 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:18:01,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:18:01,654 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:18:01,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:18:01,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:18:01,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:18:01,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:18:01,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:18:01,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:18:01,656 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:18:01,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:18:01,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:18:01,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:18:01,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:18:01,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:18:01,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:18:01,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:18:01,659 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:18:01,659 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_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 [2021-10-28 23:18:01,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:18:02,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:18:02,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:18:02,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:18:02,035 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:18:02,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2021-10-28 23:18:02,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/data/0252a1aea/415aef50e655470785b5c764749240bb/FLAG94f46c501 [2021-10-28 23:18:02,681 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:18:02,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2021-10-28 23:18:02,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/data/0252a1aea/415aef50e655470785b5c764749240bb/FLAG94f46c501 [2021-10-28 23:18:03,034 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/data/0252a1aea/415aef50e655470785b5c764749240bb [2021-10-28 23:18:03,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:18:03,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:18:03,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:18:03,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:18:03,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:18:03,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217cbb03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03, skipping insertion in model container [2021-10-28 23:18:03,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:18:03,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:18:03,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:18:03,324 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:18:03,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:18:03,350 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:18:03,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03 WrapperNode [2021-10-28 23:18:03,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:18:03,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:18:03,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:18:03,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:18:03,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:18:03,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:18:03,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:18:03,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:18:03,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:18:03,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:18:03,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:18:03,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:18:03,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (1/1) ... [2021-10-28 23:18:03,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:03,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:03,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:03,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:18:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:18:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-10-28 23:18:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-10-28 23:18:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:18:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:18:03,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:18:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:18:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:18:03,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:18:03,843 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:18:03,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:03 BoogieIcfgContainer [2021-10-28 23:18:03,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:18:03,854 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:18:03,854 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:18:03,869 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:18:03,870 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:18:03,870 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:18:03" (1/3) ... [2021-10-28 23:18:03,872 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@179ebbf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:18:03, skipping insertion in model container [2021-10-28 23:18:03,872 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:18:03,872 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:03" (2/3) ... [2021-10-28 23:18:03,873 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@179ebbf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:18:03, skipping insertion in model container [2021-10-28 23:18:03,873 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:18:03,873 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:03" (3/3) ... [2021-10-28 23:18:03,875 INFO L389 chiAutomizerObserver]: Analyzing ICFG rec_malloc_ex1.i [2021-10-28 23:18:03,935 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:18:03,936 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:18:03,936 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:18:03,936 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:18:03,936 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:18:03,936 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:18:03,937 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:18:03,937 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:18:03,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:18:04,003 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 23:18:04,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:18:04,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:18:04,012 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:18:04,012 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:04,012 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:18:04,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:18:04,017 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 23:18:04,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:18:04,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:18:04,019 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:18:04,019 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:04,029 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 6#L-1true havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~nondet8, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem13, main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_#t~malloc5.base, main_#t~malloc5.offset;call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;havoc main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(main_#t~nondet7, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet7;call write~int(main_#t~nondet8, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet8; 13#L28-3true [2021-10-28 23:18:04,032 INFO L793 eck$LassoCheckResult]: Loop: 13#L28-3true call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 11#L28-1true assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~mem10 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem10, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem10;call write~int(-1, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem11 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 5#L31true call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem11);< 12#recENTRYtrue ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 10#L9true assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 16#recFINALtrue assume true; 15#recEXITtrue >#33#return; 14#L31-1true havoc main_#t~mem11;call main_#t~mem12 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem13 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem12 + main_#t~mem13, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem12;havoc main_#t~mem13; 13#L28-3true [2021-10-28 23:18:04,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:04,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 1 times [2021-10-28 23:18:04,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:04,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225688259] [2021-10-28 23:18:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:04,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:04,238 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:04,290 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:04,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:04,296 INFO L85 PathProgramCache]: Analyzing trace with hash 51331199, now seen corresponding path program 1 times [2021-10-28 23:18:04,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:04,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371131064] [2021-10-28 23:18:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:04,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:04,396 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:04,468 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:04,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:04,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1890018113, now seen corresponding path program 1 times [2021-10-28 23:18:04,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:04,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424491108] [2021-10-28 23:18:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:04,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 23:18:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:04,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:04,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424491108] [2021-10-28 23:18:04,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424491108] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:04,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:04,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:18:04,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331617283] [2021-10-28 23:18:05,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:05,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:18:05,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:18:05,697 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:18:05,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:05,789 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-10-28 23:18:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:18:05,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2021-10-28 23:18:05,794 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 23:18:05,801 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 16 transitions. [2021-10-28 23:18:05,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-28 23:18:05,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-28 23:18:05,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-10-28 23:18:05,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:05,805 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 23:18:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-10-28 23:18:05,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 23:18:05,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 23:18:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-28 23:18:05,840 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 23:18:05,840 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 23:18:05,840 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:18:05,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-10-28 23:18:05,841 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 23:18:05,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:18:05,842 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:18:05,843 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:18:05,843 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:05,843 INFO L791 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 59#L-1 havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~nondet8, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem13, main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_#t~malloc5.base, main_#t~malloc5.offset;call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;havoc main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(main_#t~nondet7, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet7;call write~int(main_#t~nondet8, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet8; 66#L28-3 [2021-10-28 23:18:05,843 INFO L793 eck$LassoCheckResult]: Loop: 66#L28-3 call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 64#L28-1 assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~mem10 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem10, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem10;call write~int(-1, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem11 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 62#L31 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem11);< 65#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 60#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 61#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 65#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 60#L9 assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 63#recFINAL assume true; 67#recEXIT >#31#return; 68#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 70#recFINAL assume true; 71#recEXIT >#33#return; 69#L31-1 havoc main_#t~mem11;call main_#t~mem12 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem13 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem12 + main_#t~mem13, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem12;havoc main_#t~mem13; 66#L28-3 [2021-10-28 23:18:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 2 times [2021-10-28 23:18:05,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:05,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025703011] [2021-10-28 23:18:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:05,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:05,858 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:05,872 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash 198344305, now seen corresponding path program 1 times [2021-10-28 23:18:05,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:05,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071222592] [2021-10-28 23:18:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:05,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:05,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 23:18:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 23:18:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:18:06,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:06,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071222592] [2021-10-28 23:18:06,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071222592] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:18:06,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423928264] [2021-10-28 23:18:06,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:06,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:18:06,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:06,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:18:06,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:18:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:06,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:18:06,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:18:06,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-10-28 23:18:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:18:06,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423928264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:18:06,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:18:06,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-10-28 23:18:06,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581775166] [2021-10-28 23:18:06,630 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:18:06,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:06,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:18:06,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:18:06,632 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. cyclomatic complexity: 4 Second operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:18:06,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:06,770 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-28 23:18:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:18:06,772 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2021-10-28 23:18:06,773 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 23:18:06,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 19 transitions. [2021-10-28 23:18:06,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 23:18:06,776 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 23:18:06,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2021-10-28 23:18:06,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:06,777 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-28 23:18:06,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2021-10-28 23:18:06,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-28 23:18:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 23:18:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-28 23:18:06,781 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-28 23:18:06,781 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-28 23:18:06,782 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:18:06,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2021-10-28 23:18:06,783 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 23:18:06,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:18:06,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:18:06,784 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:18:06,785 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:06,785 INFO L791 eck$LassoCheckResult]: Stem: 163#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 164#L-1 havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~nondet8, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem13, main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_#t~malloc5.base, main_#t~malloc5.offset;call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;havoc main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(main_#t~nondet7, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet7;call write~int(main_#t~nondet8, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet8; 174#L28-3 [2021-10-28 23:18:06,785 INFO L793 eck$LassoCheckResult]: Loop: 174#L28-3 call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 169#L28-1 assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~mem10 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem10, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem10;call write~int(-1, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem11 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 166#L31 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem11);< 170#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 165#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 167#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 170#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 165#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 167#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 170#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 165#L9 assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 168#recFINAL assume true; 171#recEXIT >#31#return; 172#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 175#recFINAL assume true; 179#recEXIT >#31#return; 177#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 178#recFINAL assume true; 176#recEXIT >#33#return; 173#L31-1 havoc main_#t~mem11;call main_#t~mem12 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem13 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem12 + main_#t~mem13, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem12;havoc main_#t~mem13; 174#L28-3 [2021-10-28 23:18:06,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 3 times [2021-10-28 23:18:06,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:06,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307127572] [2021-10-28 23:18:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:06,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:06,797 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:06,807 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:06,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1148543297, now seen corresponding path program 2 times [2021-10-28 23:18:06,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:06,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828530122] [2021-10-28 23:18:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:06,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:06,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 23:18:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:07,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 23:18:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:07,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 23:18:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 23:18:07,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:07,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828530122] [2021-10-28 23:18:07,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828530122] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:18:07,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323219907] [2021-10-28 23:18:07,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:18:07,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:18:07,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:07,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:18:07,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:18:07,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:18:07,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:18:07,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:18:07,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:18:07,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-10-28 23:18:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:18:07,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323219907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:18:07,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:18:07,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-10-28 23:18:07,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834304446] [2021-10-28 23:18:07,526 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:18:07,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:18:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:18:07,532 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand has 15 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 23:18:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:07,708 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-10-28 23:18:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:18:07,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2021-10-28 23:18:07,710 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 23:18:07,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 22 transitions. [2021-10-28 23:18:07,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-28 23:18:07,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-10-28 23:18:07,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2021-10-28 23:18:07,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:18:07,713 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-28 23:18:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2021-10-28 23:18:07,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-28 23:18:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:18:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-28 23:18:07,717 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-28 23:18:07,717 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-28 23:18:07,717 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:18:07,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 22 transitions. [2021-10-28 23:18:07,718 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 23:18:07,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:18:07,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:18:07,720 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:18:07,720 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:07,720 INFO L791 eck$LassoCheckResult]: Stem: 313#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 314#L-1 havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~nondet8, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem13, main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_#t~malloc5.base, main_#t~malloc5.offset;call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;havoc main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(main_#t~nondet7, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet7;call write~int(main_#t~nondet8, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet8; 324#L28-3 [2021-10-28 23:18:07,721 INFO L793 eck$LassoCheckResult]: Loop: 324#L28-3 call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 319#L28-1 assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~mem10 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem10, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem10;call write~int(-1, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem11 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 316#L31 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem11);< 320#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 315#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 317#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 320#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 315#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 317#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 320#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 315#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 317#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 320#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 315#L9 assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 318#recFINAL assume true; 321#recEXIT >#31#return; 322#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 325#recFINAL assume true; 332#recEXIT >#31#return; 331#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 330#recFINAL assume true; 329#recEXIT >#31#return; 327#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 328#recFINAL assume true; 326#recEXIT >#33#return; 323#L31-1 havoc main_#t~mem11;call main_#t~mem12 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem13 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem12 + main_#t~mem13, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem12;havoc main_#t~mem13; 324#L28-3 [2021-10-28 23:18:07,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:07,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 4 times [2021-10-28 23:18:07,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:07,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823356436] [2021-10-28 23:18:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:07,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:07,728 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:07,736 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:07,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1161179343, now seen corresponding path program 3 times [2021-10-28 23:18:07,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:07,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462571933] [2021-10-28 23:18:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:07,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:07,767 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:07,797 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:07,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:07,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1853588851, now seen corresponding path program 1 times [2021-10-28 23:18:07,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:07,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211185934] [2021-10-28 23:18:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:07,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:07,855 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:07,915 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:12,338 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:18:12,339 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:18:12,339 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:18:12,339 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:18:12,339 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:18:12,340 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:12,340 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:18:12,340 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:18:12,340 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex1.i_Iteration4_Lasso [2021-10-28 23:18:12,340 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:18:12,341 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:18:12,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:12,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:18:13,131 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:18:13,136 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:18:13,138 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:13,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:13,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:13,179 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:18:13,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:18:13,191 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:18:13,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:18:13,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:18:13,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:18:13,196 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:18:13,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:18:13,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:18:13,214 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:18:13,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:13,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:13,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:13,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:13,266 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:18:13,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:18:13,276 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:18:13,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:18:13,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:18:13,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:18:13,280 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:18:13,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:18:13,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:18:13,302 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:18:13,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:13,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:13,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:13,337 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:13,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:18:13,340 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:18:13,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:18:13,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:18:13,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:18:13,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:18:13,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:18:13,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:18:13,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:18:13,378 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:18:13,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:13,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:13,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:13,407 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:13,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:18:13,409 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:18:13,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:18:13,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:18:13,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:18:13,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:18:13,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:18:13,424 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:18:13,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:18:13,445 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:18:13,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:13,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:13,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:13,486 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:13,492 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:18:13,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:18:13,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:18:13,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:18:13,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:18:13,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:18:13,504 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:18:13,504 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:18:13,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:18:13,521 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:18:13,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-28 23:18:13,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:13,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:13,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:13,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:18:13,565 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:18:13,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:18:13,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:18:13,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:18:13,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:18:13,577 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:18:13,577 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:18:13,598 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:18:13,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:13,638 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:13,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:13,642 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:13,647 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:18:13,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:18:13,657 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:18:13,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:18:13,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:18:13,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:18:13,658 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:18:13,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:18:13,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:18:13,660 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:18:13,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-28 23:18:13,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:13,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:13,692 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:13,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:18:13,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:18:13,702 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:18:13,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:18:13,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:18:13,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:18:13,714 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:18:13,715 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:18:13,727 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:18:13,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:13,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:13,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:13,770 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:13,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:18:13,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:18:13,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:18:13,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:18:13,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:18:13,802 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:18:13,809 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:18:13,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:18:13,833 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:18:13,852 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-28 23:18:13,852 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-10-28 23:18:13,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:18:13,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:13,866 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:13,894 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:18:13,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:18:13,908 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 23:18:13,909 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:18:13,909 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~qq~0.base) ULTIMATE.start_main_~qq~0.offset)_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~qq~0.base) ULTIMATE.start_main_~qq~0.offset)_1 Supporting invariants [] [2021-10-28 23:18:13,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:13,992 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2021-10-28 23:18:14,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:14,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:18:14,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:18:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:14,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-28 23:18:14,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:18:14,231 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-28 23:18:14,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-10-28 23:18:14,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:31,788 WARN L207 SmtUtils]: Spent 12.13 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-28 23:18:55,996 WARN L207 SmtUtils]: Spent 12.08 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-28 23:18:56,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2021-10-28 23:19:08,494 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:19:08,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 66 [2021-10-28 23:19:18,325 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 23:19:18,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 130 [2021-10-28 23:19:22,058 INFO L354 Elim1Store]: treesize reduction 556, result has 17.9 percent of original size [2021-10-28 23:19:22,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 179 treesize of output 211 [2021-10-28 23:19:22,254 INFO L354 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2021-10-28 23:19:22,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 215 treesize of output 237 [2021-10-28 23:19:22,356 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-10-28 23:19:22,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 238 treesize of output 246 [2021-10-28 23:19:22,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:19:22,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:19:23,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-10-28 23:19:24,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-10-28 23:19:24,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-10-28 23:19:25,702 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:19:25,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 249 [2021-10-28 23:19:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:19:27,628 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 19 loop predicates [2021-10-28 23:19:27,629 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:20:59,423 WARN L207 SmtUtils]: Spent 12.05 s on a formula simplification that was a NOOP. DAG size: 28 [2021-10-28 23:21:43,509 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. Second operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Result 56 states and 66 transitions. Complement of second has 29 states. [2021-10-28 23:21:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 23:21:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:21:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2021-10-28 23:21:43,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 13 transitions. Stem has 2 letters. Loop has 26 letters. [2021-10-28 23:21:43,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:21:43,516 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:21:43,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:43,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:21:43,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:21:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:43,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-28 23:21:43,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:21:43,782 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-28 23:21:43,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-10-28 23:22:02,959 WARN L207 SmtUtils]: Spent 12.08 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-28 23:22:15,088 WARN L207 SmtUtils]: Spent 12.03 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-28 23:22:15,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-28 23:22:15,465 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:22:15,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 74 [2021-10-28 23:22:16,161 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 23:22:16,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 141 [2021-10-28 23:22:16,956 INFO L354 Elim1Store]: treesize reduction 616, result has 9.0 percent of original size [2021-10-28 23:22:16,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 190 treesize of output 162 [2021-10-28 23:22:17,012 INFO L354 Elim1Store]: treesize reduction 73, result has 9.9 percent of original size [2021-10-28 23:22:17,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 166 treesize of output 156 [2021-10-28 23:22:17,134 INFO L354 Elim1Store]: treesize reduction 56, result has 30.9 percent of original size [2021-10-28 23:22:17,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 159 treesize of output 173 [2021-10-28 23:22:17,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 156 [2021-10-28 23:22:17,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 163 [2021-10-28 23:22:17,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 161 [2021-10-28 23:22:17,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-28 23:22:17,573 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:22:17,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 65 [2021-10-28 23:22:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 23:22:17,815 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 17 loop predicates [2021-10-28 23:22:17,815 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 23:22:50,459 WARN L207 SmtUtils]: Spent 12.09 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-28 23:23:19,474 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. Second operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Result 57 states and 67 transitions. Complement of second has 31 states. [2021-10-28 23:23:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-10-28 23:23:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 23:23:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-10-28 23:23:19,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. Stem has 2 letters. Loop has 26 letters. [2021-10-28 23:23:19,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:19,477 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:23:19,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:19,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:23:19,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:19,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-28 23:23:19,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:19,751 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-28 23:23:19,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-10-28 23:23:40,298 WARN L207 SmtUtils]: Spent 12.10 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-28 23:23:52,433 WARN L207 SmtUtils]: Spent 12.03 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-28 23:23:52,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-28 23:23:52,841 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:23:52,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 74 [2021-10-28 23:23:53,497 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 23:23:53,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 141 [2021-10-28 23:23:54,470 INFO L354 Elim1Store]: treesize reduction 616, result has 9.0 percent of original size [2021-10-28 23:23:54,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 190 treesize of output 162 [2021-10-28 23:23:54,549 INFO L354 Elim1Store]: treesize reduction 73, result has 9.9 percent of original size [2021-10-28 23:23:54,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 158 [2021-10-28 23:23:54,697 INFO L354 Elim1Store]: treesize reduction 56, result has 30.9 percent of original size [2021-10-28 23:23:54,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 161 treesize of output 175 [2021-10-28 23:23:54,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 158 [2021-10-28 23:23:54,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 149 [2021-10-28 23:23:54,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 156 [2021-10-28 23:23:55,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:23:55,200 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:23:55,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2021-10-28 23:23:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 23:23:55,472 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 17 loop predicates [2021-10-28 23:23:55,473 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 23:24:24,428 WARN L207 SmtUtils]: Spent 12.09 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-28 23:24:41,175 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. Second operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Result 56 states and 66 transitions. Complement of second has 29 states. [2021-10-28 23:24:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 23:24:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 23:24:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 26 transitions. [2021-10-28 23:24:41,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 26 transitions. Stem has 2 letters. Loop has 26 letters. [2021-10-28 23:24:41,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:24:41,181 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:24:41,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:24:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:41,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:24:41,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:24:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:24:41,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-28 23:24:41,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:24:41,464 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-28 23:24:41,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-10-28 23:25:37,562 WARN L207 SmtUtils]: Spent 12.07 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-28 23:25:37,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2021-10-28 23:26:02,065 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:26:02,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 61 [2021-10-28 23:26:38,735 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 23:26:38,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 122 [2021-10-28 23:26:40,200 INFO L354 Elim1Store]: treesize reduction 499, result has 26.3 percent of original size [2021-10-28 23:26:40,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 171 treesize of output 260 [2021-10-28 23:26:40,454 INFO L354 Elim1Store]: treesize reduction 16, result has 80.2 percent of original size [2021-10-28 23:26:40,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 252 treesize of output 306 [2021-10-28 23:26:40,528 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-28 23:26:40,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 306 treesize of output 308 [2021-10-28 23:26:40,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-10-28 23:26:51,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:26:54,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:26:54,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:26:54,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:27:05,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:27:05,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-28 23:27:05,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-10-28 23:27:05,739 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:27:05,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 194 [2021-10-28 23:27:05,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:27:06,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:27:06,196 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:27:06,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-10-28 23:27:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 23:27:07,818 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 18 loop predicates [2021-10-28 23:27:07,818 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 19 states, 16 states have (on average 1.125) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 23:28:32,215 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. Second operand has 19 states, 16 states have (on average 1.125) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Result 57 states and 67 transitions. Complement of second has 27 states. [2021-10-28 23:28:32,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 23:28:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.125) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 23:28:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 26 transitions. [2021-10-28 23:28:32,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 26 transitions. Stem has 2 letters. Loop has 26 letters. [2021-10-28 23:28:32,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:28:32,219 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:28:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:28:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:32,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:28:32,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:28:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:28:32,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-28 23:28:32,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:28:32,498 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-28 23:28:32,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-10-28 23:28:54,128 WARN L207 SmtUtils]: Spent 12.06 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-28 23:29:06,260 WARN L207 SmtUtils]: Spent 12.03 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-28 23:29:06,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-28 23:29:06,612 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:29:06,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 74 [2021-10-28 23:29:07,438 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 23:29:07,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 141 [2021-10-28 23:29:08,289 INFO L354 Elim1Store]: treesize reduction 616, result has 9.0 percent of original size [2021-10-28 23:29:08,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 190 treesize of output 162 [2021-10-28 23:29:08,356 INFO L354 Elim1Store]: treesize reduction 73, result has 9.9 percent of original size [2021-10-28 23:29:08,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 166 treesize of output 156 [2021-10-28 23:29:08,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 170 [2021-10-28 23:29:08,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 168 [2021-10-28 23:29:08,524 INFO L354 Elim1Store]: treesize reduction 56, result has 30.9 percent of original size [2021-10-28 23:29:08,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 164 treesize of output 178 [2021-10-28 23:29:08,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 161 [2021-10-28 23:29:08,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-28 23:29:08,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:29:08,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 63 [2021-10-28 23:29:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 23:29:09,252 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 17 loop predicates [2021-10-28 23:29:09,253 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 23:29:26,337 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:29:26,338 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:02,802 WARN L207 SmtUtils]: Spent 12.09 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-28 23:30:02,844 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:02,847 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:02,850 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:14,871 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:14,872 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:14,873 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:14,875 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:14,882 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:14,892 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:14,894 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:14,901 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:14,902 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:14,903 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,713 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,714 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,721 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,723 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,726 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,733 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,734 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,735 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,736 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,914 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,917 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,918 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,919 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,924 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,926 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,926 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,928 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,931 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,932 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,933 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,934 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,938 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,939 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,943 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,944 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,945 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,946 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 23:30:31,957 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Result 1236 states and 3764 transitions. Complement of second has 854 states 19 powerset states835 rank states. The highest rank that occured is 7 [2021-10-28 23:30:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 1 stem states 9 non-accepting loop states 1 accepting loop states [2021-10-28 23:30:31,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 23:30:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 50 transitions. [2021-10-28 23:30:31,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 50 transitions. Stem has 2 letters. Loop has 26 letters. [2021-10-28 23:30:31,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:30:31,961 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:30:31,961 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: no settings was sufficient at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.refineBuchi(BuchiCegarLoop.java:785) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:549) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-28 23:30:31,964 INFO L168 Benchmark]: Toolchain (without parser) took 748919.47 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 50.9 MB in the beginning and 79.8 MB in the end (delta: -28.9 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:30:31,964 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory is still 40.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:30:31,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.31 ms. Allocated memory is still 83.9 MB. Free memory was 50.7 MB in the beginning and 60.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:30:31,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.13 ms. Allocated memory is still 83.9 MB. Free memory was 60.6 MB in the beginning and 59.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:30:31,965 INFO L168 Benchmark]: Boogie Preprocessor took 23.81 ms. Allocated memory is still 83.9 MB. Free memory was 59.1 MB in the beginning and 58.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:30:31,966 INFO L168 Benchmark]: RCFGBuilder took 442.39 ms. Allocated memory is still 83.9 MB. Free memory was 58.1 MB in the beginning and 47.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:30:31,966 INFO L168 Benchmark]: BuchiAutomizer took 748109.58 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 47.5 MB in the beginning and 79.8 MB in the end (delta: -32.3 MB). Peak memory consumption was 87.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:30:31,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory is still 40.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.31 ms. Allocated memory is still 83.9 MB. Free memory was 50.7 MB in the beginning and 60.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.13 ms. Allocated memory is still 83.9 MB. Free memory was 60.6 MB in the beginning and 59.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.81 ms. Allocated memory is still 83.9 MB. Free memory was 59.1 MB in the beginning and 58.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 442.39 ms. Allocated memory is still 83.9 MB. Free memory was 58.1 MB in the beginning and 47.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 748109.58 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 47.5 MB in the beginning and 79.8 MB in the end (delta: -32.3 MB). Peak memory consumption was 87.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: AssertionError: no settings was sufficient de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: no settings was sufficient: de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.refineBuchi(BuchiCegarLoop.java:785) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-28 23:30:32,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:32,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:32,588 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forcibly destroying the process [2021-10-28 23:30:32,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3b4df4-f69b-424f-b044-c84165ee3d49/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...