./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex9.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt --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 2aaf551f63785020042d5272893266519060a07e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/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: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:20:30,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:20:30,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:20:30,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:20:30,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:20:30,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:20:30,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:20:30,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:20:30,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:20:30,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:20:30,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:20:30,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:20:30,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:20:30,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:20:30,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:20:30,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:20:30,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:20:30,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:20:30,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:20:30,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:20:30,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:20:30,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:20:30,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:20:30,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:20:30,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:20:30,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:20:30,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:20:30,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:20:30,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:20:30,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:20:30,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:20:30,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:20:30,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:20:30,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:20:30,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:20:30,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:20:30,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:20:30,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:20:30,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:20:30,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:20:30,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:20:30,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 00:20:30,982 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:20:30,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:20:30,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:20:30,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:20:30,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:20:30,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:20:30,985 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:20:30,985 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:20:30,985 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:20:30,985 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:20:30,985 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:20:30,986 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:20:30,986 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:20:30,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:20:30,986 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:20:30,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:20:30,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:20:30,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:20:30,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:20:30,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:20:30,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:20:30,988 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:20:30,988 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:20:30,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:20:30,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:20:30,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:20:30,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:20:30,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:20:30,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:20:30,993 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:20:30,993 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_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aaf551f63785020042d5272893266519060a07e [2021-10-13 00:20:31,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:20:31,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:20:31,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:20:31,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:20:31,309 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:20:31,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex9.i [2021-10-13 00:20:31,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/data/9f36eaffa/d7722c0121a74ac1be9a2923d4268212/FLAG4ddc001e6 [2021-10-13 00:20:31,883 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:20:31,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex9.i [2021-10-13 00:20:31,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/data/9f36eaffa/d7722c0121a74ac1be9a2923d4268212/FLAG4ddc001e6 [2021-10-13 00:20:32,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/data/9f36eaffa/d7722c0121a74ac1be9a2923d4268212 [2021-10-13 00:20:32,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:20:32,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:20:32,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:20:32,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:20:32,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:20:32,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f427851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32, skipping insertion in model container [2021-10-13 00:20:32,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:20:32,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:20:32,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:20:32,527 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:20:32,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:20:32,555 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:20:32,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32 WrapperNode [2021-10-13 00:20:32,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:20:32,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:20:32,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:20:32,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:20:32,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:20:32,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:20:32,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:20:32,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:20:32,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:20:32,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:20:32,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:20:32,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:20:32,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (1/1) ... [2021-10-13 00:20:32,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:32,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:32,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:32,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:20:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:20:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-10-13 00:20:32,712 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-10-13 00:20:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:20:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:20:32,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:20:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:20:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:20:32,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:20:32,941 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 00:20:32,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:20:32 BoogieIcfgContainer [2021-10-13 00:20:32,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:20:32,944 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:20:32,944 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:20:32,948 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:20:32,949 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:20:32,949 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:20:32" (1/3) ... [2021-10-13 00:20:32,950 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@246152bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:20:32, skipping insertion in model container [2021-10-13 00:20:32,950 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:20:32,951 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:32" (2/3) ... [2021-10-13 00:20:32,951 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@246152bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:20:32, skipping insertion in model container [2021-10-13 00:20:32,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:20:32,951 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:20:32" (3/3) ... [2021-10-13 00:20:32,953 INFO L389 chiAutomizerObserver]: Analyzing ICFG rec_malloc_ex9.i [2021-10-13 00:20:33,003 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:20:33,003 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:20:33,004 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:20:33,004 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:20:33,004 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:20:33,004 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:20:33,004 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:20:33,004 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:20:33,023 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) [2021-10-13 00:20:33,045 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-13 00:20:33,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:20:33,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:20:33,052 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:20:33,052 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:33,053 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:20:33,053 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) [2021-10-13 00:20:33,060 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-13 00:20:33,060 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:20:33,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:20:33,061 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:20:33,062 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:33,070 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;havoc main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 11#L29-3true [2021-10-13 00:20:33,071 INFO L793 eck$LassoCheckResult]: Loop: 11#L29-3true call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 8#L29-1true assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 9#L33true call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 14#recENTRYtrue ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 12#L9true assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 16#recFINALtrue assume true; 15#recEXITtrue >#33#return; 6#L33-1true havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 11#L29-3true [2021-10-13 00:20:33,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:33,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 1 times [2021-10-13 00:20:33,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:33,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119227830] [2021-10-13 00:20:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:33,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:33,195 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:20:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:33,237 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:20:33,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:33,241 INFO L82 PathProgramCache]: Analyzing trace with hash 51331199, now seen corresponding path program 1 times [2021-10-13 00:20:33,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:33,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590660707] [2021-10-13 00:20:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:33,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:33,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:20:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:33,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:33,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590660707] [2021-10-13 00:20:33,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590660707] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:33,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:33,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:20:33,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846451323] [2021-10-13 00:20:33,579 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:20:33,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:20:33,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:20:33,617 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 7 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-10-13 00:20:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:33,805 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-10-13 00:20:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:20:33,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2021-10-13 00:20:33,818 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-13 00:20:33,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 16 transitions. [2021-10-13 00:20:33,829 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-13 00:20:33,829 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-13 00:20:33,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-10-13 00:20:33,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:20:33,834 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-13 00:20:33,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-10-13 00:20:33,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 00:20:33,869 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) [2021-10-13 00:20:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-13 00:20:33,872 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-13 00:20:33,873 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-13 00:20:33,873 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:20:33,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-10-13 00:20:33,875 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-13 00:20:33,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:20:33,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:20:33,877 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:20:33,877 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:33,877 INFO L791 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 56#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;havoc main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 57#L29-3 [2021-10-13 00:20:33,877 INFO L793 eck$LassoCheckResult]: Loop: 57#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 58#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 61#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 66#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 59#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 60#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 66#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 59#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 62#recFINAL assume true; 67#recEXIT >#31#return; 63#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 64#recFINAL assume true; 68#recEXIT >#33#return; 65#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 57#L29-3 [2021-10-13 00:20:33,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:33,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 2 times [2021-10-13 00:20:33,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:33,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947495462] [2021-10-13 00:20:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:33,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:33,910 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:20:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:33,945 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:20:33,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:33,946 INFO L82 PathProgramCache]: Analyzing trace with hash 198344305, now seen corresponding path program 1 times [2021-10-13 00:20:33,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:33,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762842339] [2021-10-13 00:20:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:33,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:34,015 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:20:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:34,055 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:20:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:34,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1849555021, now seen corresponding path program 1 times [2021-10-13 00:20:34,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:34,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781142963] [2021-10-13 00:20:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:34,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:34,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:20:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:20:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 00:20:34,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:34,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781142963] [2021-10-13 00:20:34,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781142963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:20:34,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680733896] [2021-10-13 00:20:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:34,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:34,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:34,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:20:34,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:20:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:34,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:20:34,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:34,507 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 10 treesize of output 8 [2021-10-13 00:20:34,591 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 42 treesize of output 34 [2021-10-13 00:20:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 00:20:34,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680733896] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:20:34,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:20:34,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-10-13 00:20:34,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313729868] [2021-10-13 00:20:36,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:36,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:20:36,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:20:36,244 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. cyclomatic complexity: 4 Second operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-13 00:20:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:36,366 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-13 00:20:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:20:36,367 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2021-10-13 00:20:36,369 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-13 00:20:36,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 19 transitions. [2021-10-13 00:20:36,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-13 00:20:36,370 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-13 00:20:36,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2021-10-13 00:20:36,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:20:36,371 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-13 00:20:36,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2021-10-13 00:20:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-13 00:20:36,375 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) [2021-10-13 00:20:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-13 00:20:36,381 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-13 00:20:36,381 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-13 00:20:36,381 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:20:36,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2021-10-13 00:20:36,382 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-13 00:20:36,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:20:36,383 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:20:36,384 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:20:36,384 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:36,384 INFO L791 eck$LassoCheckResult]: Stem: 168#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 169#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;havoc main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 170#L29-3 [2021-10-13 00:20:36,384 INFO L793 eck$LassoCheckResult]: Loop: 170#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 171#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 173#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 179#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 172#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 174#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 179#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 172#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 174#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 179#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 172#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 175#recFINAL assume true; 180#recEXIT >#31#return; 176#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 177#recFINAL assume true; 184#recEXIT >#31#return; 182#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 183#recFINAL assume true; 181#recEXIT >#33#return; 178#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 170#L29-3 [2021-10-13 00:20:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:36,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 3 times [2021-10-13 00:20:36,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:36,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10456022] [2021-10-13 00:20:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:36,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:36,395 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:20:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:36,404 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:20:36,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:36,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1148543297, now seen corresponding path program 2 times [2021-10-13 00:20:36,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:36,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630948752] [2021-10-13 00:20:36,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:36,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:36,429 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:20:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:36,465 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:20:36,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:36,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1421169023, now seen corresponding path program 2 times [2021-10-13 00:20:36,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:36,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215352791] [2021-10-13 00:20:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:36,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:36,544 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:20:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:20:36,614 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:20:39,204 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:20:39,205 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:20:39,205 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:20:39,205 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:20:39,206 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:20:39,206 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:39,206 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:20:39,206 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:20:39,206 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex9.i_Iteration3_Lasso [2021-10-13 00:20:39,206 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:20:39,207 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:20:39,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:20:39,774 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:20:39,780 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:20:39,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:39,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:39,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:39,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 00:20:39,784 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 [2021-10-13 00:20:39,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:39,793 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:20:39,794 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:39,794 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:39,794 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:39,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:20:39,798 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:20:39,800 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:39,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-10-13 00:20:39,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:39,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:39,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:39,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 00:20:39,897 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 [2021-10-13 00:20:39,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:39,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:20:39,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:39,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:39,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:39,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:20:39,907 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:20:39,917 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:39,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-13 00:20:39,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:39,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:39,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:39,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 00:20:39,944 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 [2021-10-13 00:20:39,952 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:39,952 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:20:39,952 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:39,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:39,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:39,953 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:20:39,953 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:20:39,958 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:39,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-13 00:20:39,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:39,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:39,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:39,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 00:20:39,987 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 [2021-10-13 00:20:39,995 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:39,995 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:20:39,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:39,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:39,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:39,996 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:20:39,996 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:20:39,997 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:40,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-13 00:20:40,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 00:20:40,023 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 [2021-10-13 00:20:40,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:40,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:20:40,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:40,033 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:40,033 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:40,034 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:20:40,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:20:40,057 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:40,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:40,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 00:20:40,101 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 [2021-10-13 00:20:40,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:40,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:40,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:40,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:40,115 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:20:40,115 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:20:40,139 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:40,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:40,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 00:20:40,180 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 [2021-10-13 00:20:40,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:40,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:40,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:40,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:40,192 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:20:40,192 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:20:40,217 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:40,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:40,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,266 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 [2021-10-13 00:20:40,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:40,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:20:40,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:40,275 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:40,275 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:40,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:20:40,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:20:40,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 00:20:40,277 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:40,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:40,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,320 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 00:20:40,321 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 [2021-10-13 00:20:40,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:40,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:20:40,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:40,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:40,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:40,329 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:20:40,329 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:20:40,330 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:40,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-10-13 00:20:40,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,354 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 00:20:40,356 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 [2021-10-13 00:20:40,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:40,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:20:40,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:40,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:40,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:40,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:20:40,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:20:40,366 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:40,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:40,390 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 00:20:40,393 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 [2021-10-13 00:20:40,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:40,402 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2021-10-13 00:20:40,402 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-10-13 00:20:40,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:40,447 INFO L401 nArgumentSynthesizer]: We have 72 Motzkin's Theorem applications. [2021-10-13 00:20:40,447 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2021-10-13 00:20:40,528 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:40,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:40,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,554 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 00:20:40,555 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 [2021-10-13 00:20:40,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:40,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:40,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:40,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:40,567 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:20:40,567 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:20:40,597 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:40,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:40,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,636 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 00:20:40,638 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 [2021-10-13 00:20:40,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:40,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:40,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:40,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:40,651 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:20:40,652 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:20:40,669 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:20:40,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:40,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,706 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 00:20:40,713 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 [2021-10-13 00:20:40,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:20:40,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:20:40,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:20:40,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:20:40,725 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:20:40,725 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:20:40,740 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:20:40,753 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-13 00:20:40,753 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-10-13 00:20:40,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:20:40,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:40,769 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:40,809 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:20:40,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-13 00:20:40,865 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-13 00:20:40,865 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:20:40,866 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 [] [2021-10-13 00:20:40,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:40,920 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2021-10-13 00:20:40,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:40,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:20:40,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:41,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 00:20:41,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:41,108 INFO L354 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2021-10-13 00:20:41,108 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 110 treesize of output 31 [2021-10-13 00:20:41,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:42,183 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-10-13 00:20:42,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 87 treesize of output 81 [2021-10-13 00:20:42,221 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-10-13 00:20:42,222 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 83 treesize of output 91 [2021-10-13 00:20:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 00:20:42,334 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 13 loop predicates [2021-10-13 00:20:42,335 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:20:54,727 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 19 transitions. cyclomatic complexity: 4. Second operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Result 65 states and 74 transitions. Complement of second has 29 states. [2021-10-13 00:20:54,728 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 [2021-10-13 00:20:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:20:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 16 transitions. [2021-10-13 00:20:54,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 16 transitions. Stem has 2 letters. Loop has 20 letters. [2021-10-13 00:20:54,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:20:54,731 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:20:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:54,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:20:54,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:54,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 00:20:54,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:54,869 INFO L354 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2021-10-13 00:20:54,870 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 110 treesize of output 31 [2021-10-13 00:20:56,926 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 28 treesize of output 27 [2021-10-13 00:20:59,917 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:20:59,917 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 38 treesize of output 40 [2021-10-13 00:21:01,764 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-13 00:21:01,764 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 21 treesize of output 23 [2021-10-13 00:21:01,851 INFO L354 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2021-10-13 00:21:01,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 69 treesize of output 91 [2021-10-13 00:21:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 11 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:21:03,540 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 15 loop predicates [2021-10-13 00:21:03,540 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:21:39,940 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 19 transitions. cyclomatic complexity: 4. Second operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Result 69 states and 79 transitions. Complement of second has 41 states. [2021-10-13 00:21:39,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 1 stem states 11 non-accepting loop states 1 accepting loop states [2021-10-13 00:21:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 11 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:21:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2021-10-13 00:21:39,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 18 transitions. Stem has 2 letters. Loop has 20 letters. [2021-10-13 00:21:39,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:21:39,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 18 transitions. Stem has 22 letters. Loop has 20 letters. [2021-10-13 00:21:39,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:21:39,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 18 transitions. Stem has 2 letters. Loop has 40 letters. [2021-10-13 00:21:39,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:21:39,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 79 transitions. [2021-10-13 00:21:39,950 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2021-10-13 00:21:39,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 52 states and 62 transitions. [2021-10-13 00:21:39,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-13 00:21:39,954 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-13 00:21:39,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 62 transitions. [2021-10-13 00:21:39,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:21:39,955 INFO L681 BuchiCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-10-13 00:21:39,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 62 transitions. [2021-10-13 00:21:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-13 00:21:39,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 38 states have internal predecessors, (40), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2021-10-13 00:21:39,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-10-13 00:21:39,964 INFO L704 BuchiCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-10-13 00:21:39,965 INFO L587 BuchiCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-10-13 00:21:39,965 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:21:39,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 62 transitions. [2021-10-13 00:21:39,967 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2021-10-13 00:21:39,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:21:39,967 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:21:39,968 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:21:39,968 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 00:21:39,968 INFO L791 eck$LassoCheckResult]: Stem: 605#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 606#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;havoc main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 628#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 604#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 623#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 651#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 649#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 609#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 621#recENTRY [2021-10-13 00:21:39,968 INFO L793 eck$LassoCheckResult]: Loop: 621#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 607#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 608#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 621#recENTRY [2021-10-13 00:21:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:39,969 INFO L82 PathProgramCache]: Analyzing trace with hash -15910302, now seen corresponding path program 1 times [2021-10-13 00:21:39,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:39,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921620685] [2021-10-13 00:21:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:39,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:21:39,988 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:21:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:21:40,001 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:21:40,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:40,002 INFO L82 PathProgramCache]: Analyzing trace with hash 29945, now seen corresponding path program 1 times [2021-10-13 00:21:40,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:40,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956737485] [2021-10-13 00:21:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:40,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:21:40,008 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:21:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:21:40,013 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:21:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:40,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1537404168, now seen corresponding path program 2 times [2021-10-13 00:21:40,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:40,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767656465] [2021-10-13 00:21:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:40,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:21:40,028 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:21:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:21:40,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:21:42,630 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:21:42,630 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:21:42,630 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:21:42,630 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:21:42,630 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:21:42,630 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:42,630 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:21:42,630 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:21:42,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex9.i_Iteration4_Lasso [2021-10-13 00:21:42,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:21:42,631 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:21:42,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:42,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:21:43,492 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:21:43,493 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:21:43,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:43,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:43,497 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:43,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-13 00:21:43,498 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 [2021-10-13 00:21:43,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:43,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:43,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:43,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:43,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:43,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:43,525 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:43,535 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:43,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:43,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:43,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:43,577 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:43,590 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 [2021-10-13 00:21:43,601 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:43,602 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:43,602 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:43,602 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:43,602 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:43,603 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:43,603 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:43,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-13 00:21:43,613 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:43,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:43,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:43,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:43,646 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:43,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-13 00:21:43,651 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:21:43,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:43,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:43,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:43,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:43,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:43,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:43,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:43,662 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:43,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:43,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:43,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:43,687 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:43,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-13 00:21:43,692 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 [2021-10-13 00:21:43,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:43,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:43,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:43,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:43,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:43,702 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:43,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:43,711 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:43,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:43,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:43,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:43,738 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:43,742 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 [2021-10-13 00:21:43,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-13 00:21:43,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:43,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:43,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:43,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:43,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:43,753 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:43,753 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:43,757 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:43,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:43,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:43,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:43,782 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:43,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-13 00:21:43,786 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 [2021-10-13 00:21:43,795 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:43,795 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:43,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:43,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:43,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:43,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:43,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:43,797 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:43,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:43,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:43,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:43,825 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:43,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-13 00:21:43,827 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 [2021-10-13 00:21:43,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:43,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:43,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:43,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:43,836 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:43,836 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:43,836 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:43,837 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:43,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-10-13 00:21:43,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:43,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:43,871 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:43,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-13 00:21:43,875 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 [2021-10-13 00:21:43,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:43,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:43,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:43,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:43,887 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:21:43,887 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:21:43,892 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:43,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-10-13 00:21:43,916 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:43,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:43,917 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:43,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-13 00:21:43,918 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 [2021-10-13 00:21:43,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:43,926 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:43,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:43,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:43,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:43,927 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:43,927 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:43,933 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:43,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:43,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:43,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:43,962 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:43,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-13 00:21:43,968 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 [2021-10-13 00:21:43,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:43,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:43,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:43,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:43,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:43,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:43,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,001 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,052 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,058 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 [2021-10-13 00:21:44,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-13 00:21:44,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,068 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,068 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,068 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,070 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,095 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-13 00:21:44,097 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 [2021-10-13 00:21:44,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,106 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,106 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,106 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,107 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,133 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-13 00:21:44,135 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 [2021-10-13 00:21:44,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,143 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,143 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,145 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,170 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-13 00:21:44,172 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 [2021-10-13 00:21:44,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,183 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,211 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-13 00:21:44,213 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 [2021-10-13 00:21:44,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,220 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,220 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,221 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-13 00:21:44,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,249 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-13 00:21:44,250 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 [2021-10-13 00:21:44,259 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,259 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,260 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,260 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,275 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,298 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-13 00:21:44,302 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 [2021-10-13 00:21:44,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,311 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,311 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,315 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,344 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-13 00:21:44,347 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 [2021-10-13 00:21:44,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,356 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,358 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-13 00:21:44,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,381 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-13 00:21:44,383 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 [2021-10-13 00:21:44,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,391 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,392 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,413 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-13 00:21:44,418 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 [2021-10-13 00:21:44,425 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,426 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,426 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,426 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,453 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,482 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-13 00:21:44,484 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 [2021-10-13 00:21:44,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,492 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,493 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,493 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,494 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,521 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-13 00:21:44,541 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 [2021-10-13 00:21:44,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,550 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:21:44,550 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:21:44,581 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,605 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-13 00:21:44,611 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 [2021-10-13 00:21:44,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,622 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:21:44,622 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:21:44,626 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,648 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-13 00:21:44,650 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 [2021-10-13 00:21:44,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,658 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,658 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,658 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,659 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:21:44,659 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:21:44,661 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:21:44,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-13 00:21:44,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,684 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-13 00:21:44,686 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 [2021-10-13 00:21:44,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:21:44,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:21:44,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:21:44,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:21:44,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:21:44,694 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:21:44,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:21:44,696 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:21:44,699 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:21:44,699 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:21:44,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:21:44,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:44,700 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:44,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-13 00:21:44,702 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:21:44,702 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:21:44,702 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:21:44,702 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~i) = 2*rec_#in~i + 1 Supporting invariants [] [2021-10-13 00:21:44,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:44,727 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2021-10-13 00:21:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:21:44,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:21:44,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:21:44,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:21:44,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:44,900 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 00:21:44,900 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 62 transitions. cyclomatic complexity: 15 Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:21:44,985 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 62 transitions. cyclomatic complexity: 15. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 98 states and 123 transitions. Complement of second has 13 states. [2021-10-13 00:21:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 00:21:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:21:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-10-13 00:21:44,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-13 00:21:44,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:21:44,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 11 letters. Loop has 3 letters. [2021-10-13 00:21:44,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:21:44,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 6 letters. [2021-10-13 00:21:44,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:21:44,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 123 transitions. [2021-10-13 00:21:44,997 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2021-10-13 00:21:45,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 78 states and 100 transitions. [2021-10-13 00:21:45,002 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-10-13 00:21:45,002 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-10-13 00:21:45,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 100 transitions. [2021-10-13 00:21:45,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:21:45,003 INFO L681 BuchiCegarLoop]: Abstraction has 78 states and 100 transitions. [2021-10-13 00:21:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 100 transitions. [2021-10-13 00:21:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-13 00:21:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 58 states have internal predecessors, (58), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (27), 8 states have call predecessors, (27), 15 states have call successors, (27) [2021-10-13 00:21:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2021-10-13 00:21:45,018 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 100 transitions. [2021-10-13 00:21:45,018 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 100 transitions. [2021-10-13 00:21:45,018 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 00:21:45,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 100 transitions. [2021-10-13 00:21:45,021 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2021-10-13 00:21:45,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:21:45,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:21:45,022 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-13 00:21:45,022 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 00:21:45,023 INFO L791 eck$LassoCheckResult]: Stem: 826#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 827#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;havoc main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 820#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 821#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 833#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 853#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 832#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 834#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 893#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 890#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 856#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 894#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 891#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 857#recFINAL assume true; 855#recEXIT >#31#return; 839#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 842#recFINAL assume true; 872#recEXIT >#31#return; 868#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 867#recFINAL assume true; 863#recEXIT >#33#return; 845#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 823#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 825#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 859#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 886#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 885#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 836#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 877#recENTRY [2021-10-13 00:21:45,023 INFO L793 eck$LassoCheckResult]: Loop: 877#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 882#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 837#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 877#recENTRY [2021-10-13 00:21:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash -892002912, now seen corresponding path program 3 times [2021-10-13 00:21:45,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:45,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803966079] [2021-10-13 00:21:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:45,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:21:45,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:21:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:21:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:21:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:21:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:21:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:21:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:21:45,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:21:45,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803966079] [2021-10-13 00:21:45,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803966079] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:21:45,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419727458] [2021-10-13 00:21:45,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:21:45,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:21:45,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:45,707 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:21:45,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 00:21:45,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 00:21:45,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:21:45,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 00:21:45,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:45,927 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 10 treesize of output 8 [2021-10-13 00:21:45,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 17 [2021-10-13 00:21:46,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:55,304 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 28 treesize of output 27 [2021-10-13 00:22:09,782 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:22:09,783 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 33 treesize of output 35 [2021-10-13 00:22:10,049 INFO L354 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2021-10-13 00:22:10,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 56 [2021-10-13 00:22:10,401 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-10-13 00:22:10,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 68 [2021-10-13 00:22:12,240 INFO L354 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2021-10-13 00:22:12,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 127 treesize of output 87 [2021-10-13 00:22:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 6 refuted. 2 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 00:22:12,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419727458] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:22:12,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:22:12,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-10-13 00:22:12,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613789619] [2021-10-13 00:22:12,439 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:22:12,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:12,440 INFO L82 PathProgramCache]: Analyzing trace with hash 29945, now seen corresponding path program 2 times [2021-10-13 00:22:12,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:22:12,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485200806] [2021-10-13 00:22:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:12,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:22:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:22:12,456 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:22:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:22:12,463 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:22:12,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:22:12,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 00:22:12,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=568, Unknown=6, NotChecked=0, Total=650 [2021-10-13 00:22:12,833 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. cyclomatic complexity: 28 Second operand has 26 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 00:22:28,447 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-10-13 00:22:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:22:35,181 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2021-10-13 00:22:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:22:35,182 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 76 transitions. [2021-10-13 00:22:35,185 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-13 00:22:35,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 41 states and 51 transitions. [2021-10-13 00:22:35,187 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-13 00:22:35,188 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-13 00:22:35,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2021-10-13 00:22:35,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:22:35,189 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-10-13 00:22:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2021-10-13 00:22:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-13 00:22:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 30 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2021-10-13 00:22:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-10-13 00:22:35,196 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-10-13 00:22:35,196 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-10-13 00:22:35,196 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-13 00:22:35,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 51 transitions. [2021-10-13 00:22:35,198 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-13 00:22:35,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:22:35,198 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:22:35,200 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:22:35,200 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-13 00:22:35,201 INFO L791 eck$LassoCheckResult]: Stem: 1122#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1123#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;havoc main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 1142#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 1162#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 1144#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 1161#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1160#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1131#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1145#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1130#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1127#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1139#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1140#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1128#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1139#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1126#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 1129#recFINAL assume true; 1159#recEXIT >#31#return; 1158#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1157#recFINAL assume true; 1154#recEXIT >#31#return; 1152#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1151#recFINAL assume true; 1150#recEXIT >#31#return; 1147#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1148#recFINAL assume true; 1146#recEXIT >#33#return; 1136#L33-1 [2021-10-13 00:22:35,201 INFO L793 eck$LassoCheckResult]: Loop: 1136#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 1124#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 1125#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 1133#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 1137#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1138#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1134#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1137#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1138#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1134#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1137#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1138#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1134#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1137#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1138#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1134#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1137#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1138#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 1143#recFINAL assume true; 1141#recEXIT >#31#return; 1132#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1135#recFINAL assume true; 1156#recEXIT >#31#return; 1155#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1153#recFINAL assume true; 1149#recEXIT >#31#return; 1147#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1148#recFINAL assume true; 1146#recEXIT >#31#return; 1147#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1148#recFINAL assume true; 1146#recEXIT >#33#return; 1136#L33-1 [2021-10-13 00:22:35,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:35,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1048585469, now seen corresponding path program 1 times [2021-10-13 00:22:35,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:22:35,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082604311] [2021-10-13 00:22:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:35,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:22:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:22:35,221 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:22:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:22:35,243 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:22:35,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:35,244 INFO L82 PathProgramCache]: Analyzing trace with hash -195458237, now seen corresponding path program 3 times [2021-10-13 00:22:35,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:22:35,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388830224] [2021-10-13 00:22:35,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:35,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:22:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:22:35,273 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:22:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:22:35,332 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:22:35,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:35,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2091065787, now seen corresponding path program 4 times [2021-10-13 00:22:35,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:22:35,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798866434] [2021-10-13 00:22:35,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:35,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:22:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:22:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:22:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:22:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:36,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:22:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-10-13 00:22:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:37,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:22:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:37,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:22:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:22:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:22:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 32 proven. 113 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-13 00:22:37,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:22:37,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798866434] [2021-10-13 00:22:37,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798866434] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:22:37,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587676441] [2021-10-13 00:22:37,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:22:37,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:22:37,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:22:37,470 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:22:37,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 00:22:37,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:22:37,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:22:37,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-13 00:22:37,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:22:37,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 00:22:37,777 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 0 case distinctions, treesize of input 19 treesize of output 13 [2021-10-13 00:22:37,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 17 [2021-10-13 00:22:42,622 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 33 treesize of output 32 [2021-10-13 00:22:43,261 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:22:43,261 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 41 treesize of output 43 [2021-10-13 00:22:43,839 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-13 00:22:43,839 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 54 treesize of output 59 [2021-10-13 00:22:44,325 INFO L354 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2021-10-13 00:22:44,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 76 [2021-10-13 00:22:44,373 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-10-13 00:22:44,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 79 [2021-10-13 00:22:44,730 INFO L354 Elim1Store]: treesize reduction 51, result has 12.1 percent of original size [2021-10-13 00:22:44,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 79 [2021-10-13 00:22:44,759 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-10-13 00:22:44,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 72 [2021-10-13 00:22:45,009 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-13 00:22:45,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 74 treesize of output 50 [2021-10-13 00:22:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 26 proven. 138 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-13 00:22:45,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587676441] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:22:45,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:22:45,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 45 [2021-10-13 00:22:45,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453778483] [2021-10-13 00:22:51,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:22:51,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-13 00:22:51,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1896, Unknown=2, NotChecked=0, Total=2070 [2021-10-13 00:22:51,781 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. cyclomatic complexity: 13 Second operand has 46 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 34 states have internal predecessors, (60), 14 states have call successors, (15), 4 states have call predecessors, (15), 13 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2021-10-13 00:23:19,175 WARN L207 SmtUtils]: Spent 24.12 s on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-10-13 00:23:36,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:23:36,003 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2021-10-13 00:23:36,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 00:23:36,004 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 77 transitions. [2021-10-13 00:23:36,007 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-10-13 00:23:36,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 45 states and 57 transitions. [2021-10-13 00:23:36,011 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-10-13 00:23:36,013 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-13 00:23:36,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 57 transitions. [2021-10-13 00:23:36,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:23:36,014 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 57 transitions. [2021-10-13 00:23:36,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 57 transitions. [2021-10-13 00:23:36,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-10-13 00:23:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 32 states have internal predecessors, (32), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2021-10-13 00:23:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2021-10-13 00:23:36,020 INFO L704 BuchiCegarLoop]: Abstraction has 44 states and 56 transitions. [2021-10-13 00:23:36,021 INFO L587 BuchiCegarLoop]: Abstraction has 44 states and 56 transitions. [2021-10-13 00:23:36,021 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-13 00:23:36,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 56 transitions. [2021-10-13 00:23:36,022 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-13 00:23:36,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:23:36,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:23:36,025 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:23:36,025 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-13 00:23:36,025 INFO L791 eck$LassoCheckResult]: Stem: 1623#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1624#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;havoc main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 1625#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 1626#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 1643#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 1648#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1647#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1632#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1646#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1631#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1628#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1641#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1642#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1629#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1641#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1642#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1629#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1641#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1627#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 1630#recFINAL assume true; 1666#recEXIT >#31#return; 1665#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1664#recFINAL assume true; 1663#recEXIT >#31#return; 1662#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1660#recFINAL assume true; 1658#recEXIT >#31#return; 1656#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1655#recFINAL assume true; 1653#recEXIT >#31#return; 1652#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1654#recFINAL assume true; 1651#recEXIT >#33#return; 1637#L33-1 [2021-10-13 00:23:36,026 INFO L793 eck$LassoCheckResult]: Loop: 1637#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 1638#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 1649#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 1634#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 1639#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1640#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1635#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1639#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1640#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1635#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1639#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1640#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1635#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1639#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1640#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset;havoc #t~malloc1.base, #t~malloc1.offset; 1635#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1639#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1640#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 1650#recFINAL assume true; 1644#recEXIT >#31#return; 1633#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1636#recFINAL assume true; 1645#recEXIT >#31#return; 1661#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1659#recFINAL assume true; 1657#recEXIT >#31#return; 1656#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1655#recFINAL assume true; 1653#recEXIT >#31#return; 1652#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1654#recFINAL assume true; 1651#recEXIT >#33#return; 1637#L33-1 [2021-10-13 00:23:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:23:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1075606773, now seen corresponding path program 2 times [2021-10-13 00:23:36,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:23:36,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217335350] [2021-10-13 00:23:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:23:36,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:23:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:23:36,051 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:23:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:23:36,077 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:23:36,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:23:36,078 INFO L82 PathProgramCache]: Analyzing trace with hash -195458237, now seen corresponding path program 4 times [2021-10-13 00:23:36,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:23:36,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591192494] [2021-10-13 00:23:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:23:36,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:23:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:23:36,099 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:23:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:23:36,123 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:23:36,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:23:36,124 INFO L82 PathProgramCache]: Analyzing trace with hash 2001023031, now seen corresponding path program 5 times [2021-10-13 00:23:36,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:23:36,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345921585] [2021-10-13 00:23:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:23:36,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:23:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:23:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:36,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:23:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:23:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:23:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:23:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-10-13 00:23:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:23:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:23:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:23:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:23:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 32 proven. 140 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-10-13 00:23:37,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:23:37,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345921585] [2021-10-13 00:23:37,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345921585] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:23:37,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529621240] [2021-10-13 00:23:37,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:23:37,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:23:37,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:23:37,630 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:23:37,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 00:23:38,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 00:23:38,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:23:38,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 00:23:38,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:23:38,053 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 10 treesize of output 8 [2021-10-13 00:23:38,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 17 [2021-10-13 00:24:41,330 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 18 [2021-10-13 00:24:46,588 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_rec_~i_76 Int) (rec_~op.base Int)) (and (< v_rec_~i_76 0) (<= |c_rec_#in~i| (+ 3 v_rec_~i_76)) (= |c_#memory_int| (store |c_old(#memory_int)| rec_~op.base (store (select |c_old(#memory_int)| rec_~op.base) 0 (+ v_rec_~i_76 1)))))) is different from true [2021-10-13 00:25:21,577 INFO L354 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2021-10-13 00:25:21,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 51 [2021-10-13 00:25:23,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 00:25:23,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 00:25:23,869 INFO L354 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2021-10-13 00:25:23,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 55 [2021-10-13 00:25:26,086 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 00:25:26,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 75 treesize of output 55 [2021-10-13 00:25:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 35 proven. 138 refuted. 5 times theorem prover too weak. 38 trivial. 23 not checked. [2021-10-13 00:25:38,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529621240] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:25:38,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:25:38,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 36 [2021-10-13 00:25:38,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641437960] [2021-10-13 00:25:43,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:25:43,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-13 00:25:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1121, Unknown=22, NotChecked=68, Total=1332 [2021-10-13 00:25:43,429 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. cyclomatic complexity: 15 Second operand has 37 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 32 states have internal predecessors, (58), 11 states have call successors, (12), 3 states have call predecessors, (12), 15 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2021-10-13 00:27:04,518 WARN L207 SmtUtils]: Spent 6.66 s on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2021-10-13 00:27:17,795 WARN L207 SmtUtils]: Spent 6.43 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-10-13 00:27:37,907 WARN L207 SmtUtils]: Spent 6.92 s on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2021-10-13 00:27:52,748 WARN L207 SmtUtils]: Spent 7.02 s on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2021-10-13 00:28:08,357 WARN L207 SmtUtils]: Spent 7.40 s on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2021-10-13 00:28:33,726 WARN L207 SmtUtils]: Spent 7.02 s on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-10-13 00:28:54,292 WARN L207 SmtUtils]: Spent 9.01 s on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2021-10-13 00:29:12,916 WARN L207 SmtUtils]: Spent 7.31 s on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2021-10-13 00:29:44,819 WARN L207 SmtUtils]: Spent 7.32 s on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-10-13 00:30:22,224 WARN L207 SmtUtils]: Spent 15.49 s on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2021-10-13 00:30:32,575 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-13 00:30:32,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 101 [2021-10-13 00:30:32,576 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:260) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.refineFinite(BuchiCegarLoop.java:950) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:530) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:237) ... 40 more [2021-10-13 00:30:32,579 INFO L168 Benchmark]: Toolchain (without parser) took 600313.21 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 64.8 MB in the beginning and 55.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:32,580 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory is still 81.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:30:32,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.49 ms. Allocated memory is still 100.7 MB. Free memory was 64.6 MB in the beginning and 78.4 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:32,581 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.14 ms. Allocated memory is still 100.7 MB. Free memory was 78.4 MB in the beginning and 77.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:32,581 INFO L168 Benchmark]: Boogie Preprocessor took 24.98 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:30:32,581 INFO L168 Benchmark]: RCFGBuilder took 328.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 65.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:32,582 INFO L168 Benchmark]: BuchiAutomizer took 599634.50 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 65.3 MB in the beginning and 55.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:32,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory is still 81.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.49 ms. Allocated memory is still 100.7 MB. Free memory was 64.6 MB in the beginning and 78.4 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.14 ms. Allocated memory is still 100.7 MB. Free memory was 78.4 MB in the beginning and 77.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.98 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 328.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 65.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 599634.50 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 65.3 MB in the beginning and 55.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 00:30:32,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-13 00:30:32,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-13 00:30:33,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-13 00:30:33,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4589160d-2387-41df-8527-1358d392ad83/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 Received shutdown request...