./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:11:46,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:11:46,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:11:46,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:11:46,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:11:46,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:11:46,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:11:46,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:11:46,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:11:46,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:11:46,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:11:46,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:11:46,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:11:46,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:11:46,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:11:46,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:11:46,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:11:46,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:11:46,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:11:46,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:11:46,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:11:46,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:11:46,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:11:46,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:11:46,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:11:46,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:11:46,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:11:46,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:11:46,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:11:46,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:11:46,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:11:46,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:11:46,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:11:46,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:11:46,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:11:46,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:11:46,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:11:46,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:11:46,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:11:46,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:11:46,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:11:46,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-02 21:11:46,265 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:11:46,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:11:46,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:11:46,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:11:46,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:11:46,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:11:46,268 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:11:46,268 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 21:11:46,269 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 21:11:46,269 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 21:11:46,270 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 21:11:46,270 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 21:11:46,270 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 21:11:46,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:11:46,271 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:11:46,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:11:46,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:11:46,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 21:11:46,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 21:11:46,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 21:11:46,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:11:46,272 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 21:11:46,272 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:11:46,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 21:11:46,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:11:46,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:11:46,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:11:46,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:11:46,275 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 21:11:46,275 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_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 [2022-11-02 21:11:46,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:11:46,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:11:46,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:11:46,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:11:46,632 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:11:46,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2022-11-02 21:11:46,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/data/4fd57a99f/49a028691a394ab692b68e799adaf4ae/FLAG3b05f0322 [2022-11-02 21:11:47,243 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:11:47,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2022-11-02 21:11:47,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/data/4fd57a99f/49a028691a394ab692b68e799adaf4ae/FLAG3b05f0322 [2022-11-02 21:11:47,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/data/4fd57a99f/49a028691a394ab692b68e799adaf4ae [2022-11-02 21:11:47,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:11:47,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:11:47,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:47,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:11:47,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:11:47,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117b62e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47, skipping insertion in model container [2022-11-02 21:11:47,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:11:47,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:11:47,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:47,841 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:11:47,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:47,875 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:11:47,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47 WrapperNode [2022-11-02 21:11:47,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:47,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:47,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:11:47,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:11:47,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,917 INFO L138 Inliner]: procedures = 11, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-11-02 21:11:47,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:47,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:11:47,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:11:47,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:11:47,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,954 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:11:47,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:11:47,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:11:47,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:11:47,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (1/1) ... [2022-11-02 21:11:47,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:11:47,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:48,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:11:48,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 21:11:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:11:48,056 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-11-02 21:11:48,056 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-11-02 21:11:48,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:11:48,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:11:48,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:11:48,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:11:48,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:11:48,143 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:11:48,146 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:11:48,397 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:11:48,416 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:11:48,416 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:11:48,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:48 BoogieIcfgContainer [2022-11-02 21:11:48,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:11:48,419 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 21:11:48,420 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 21:11:48,424 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 21:11:48,424 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 21:11:48,425 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 09:11:47" (1/3) ... [2022-11-02 21:11:48,426 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e528635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 09:11:48, skipping insertion in model container [2022-11-02 21:11:48,426 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 21:11:48,426 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:47" (2/3) ... [2022-11-02 21:11:48,426 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e528635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 09:11:48, skipping insertion in model container [2022-11-02 21:11:48,426 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 21:11:48,427 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:48" (3/3) ... [2022-11-02 21:11:48,428 INFO L332 chiAutomizerObserver]: Analyzing ICFG rec_malloc_ex1.i [2022-11-02 21:11:48,482 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 21:11:48,482 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 21:11:48,482 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 21:11:48,482 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 21:11:48,482 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 21:11:48,483 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 21:11:48,483 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 21:11:48,483 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 21:11:48,487 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) [2022-11-02 21:11:48,508 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-02 21:11:48,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:11:48,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:11:48,515 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 21:11:48,515 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:48,515 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 21:11:48,515 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) [2022-11-02 21:11:48,517 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-02 21:11:48,517 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:11:48,517 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:11:48,518 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 21:11:48,518 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:48,525 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~malloc6#1.base, main_#t~malloc6#1.offset, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem9#1, main_~pp~0#1.base, main_~pp~0#1.offset, main_~qq~0#1.base, main_~qq~0#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnHeap(4);main_~pp~0#1.base, main_~pp~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;havoc main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call main_#t~malloc6#1.base, main_#t~malloc6#1.offset := #Ultimate.allocOnHeap(4);main_~qq~0#1.base, main_~qq~0#1.offset := main_#t~malloc6#1.base, main_#t~malloc6#1.offset;havoc main_#t~malloc6#1.base, main_#t~malloc6#1.offset;call write~int(main_#t~nondet7#1, main_~pp~0#1.base, main_~pp~0#1.offset, 4);havoc main_#t~nondet7#1;call write~int(main_#t~nondet8#1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);havoc main_#t~nondet8#1; 12#L28-3true [2022-11-02 21:11:48,526 INFO L750 eck$LassoCheckResult]: Loop: 12#L28-3true call main_#t~mem9#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4); 10#L28-1true assume !!(main_#t~mem9#1 > 1);havoc main_#t~mem9#1;call main_#t~mem10#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4);call write~int(main_#t~mem10#1, main_~pp~0#1.base, main_~pp~0#1.offset, 4);havoc main_#t~mem10#1;call write~int(-1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~pp~0#1.base, main_~pp~0#1.offset, 4); 4#L31true call rec(main_~pp~0#1.base, main_~pp~0#1.offset, main_#t~mem11#1);< 11#recENTRYtrue ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 9#L9true assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 15#recFINALtrue assume true; 14#recEXITtrue >#33#return; 13#L31-1true havoc main_#t~mem11#1;call main_#t~mem12#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~pp~0#1.base, main_~pp~0#1.offset, 4);call write~int(main_#t~mem12#1 + main_#t~mem13#1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);havoc main_#t~mem12#1;havoc main_#t~mem13#1; 12#L28-3true [2022-11-02 21:11:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 1 times [2022-11-02 21:11:48,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:48,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50705513] [2022-11-02 21:11:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:48,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:48,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:48,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:48,791 INFO L85 PathProgramCache]: Analyzing trace with hash 51331199, now seen corresponding path program 1 times [2022-11-02 21:11:48,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:48,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006474049] [2022-11-02 21:11:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:48,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:48,897 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:48,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:48,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1890018113, now seen corresponding path program 1 times [2022-11-02 21:11:48,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:48,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141036923] [2022-11-02 21:11:48,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:48,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:49,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:11:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:49,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:49,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141036923] [2022-11-02 21:11:49,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141036923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:49,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:49,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:11:49,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983504835] [2022-11-02 21:11:49,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:50,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:11:50,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:11:50,312 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:50,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:50,433 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-11-02 21:11:50,434 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2022-11-02 21:11:50,437 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-02 21:11:50,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 16 transitions. [2022-11-02 21:11:50,444 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-11-02 21:11:50,444 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2022-11-02 21:11:50,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2022-11-02 21:11:50,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:50,446 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-02 21:11:50,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2022-11-02 21:11:50,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-02 21:11:50,474 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) [2022-11-02 21:11:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-02 21:11:50,476 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-02 21:11:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:11:50,481 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-02 21:11:50,481 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 21:11:50,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2022-11-02 21:11:50,482 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-02 21:11:50,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:11:50,482 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:11:50,483 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 21:11:50,483 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:50,484 INFO L748 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 59#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~malloc6#1.base, main_#t~malloc6#1.offset, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem9#1, main_~pp~0#1.base, main_~pp~0#1.offset, main_~qq~0#1.base, main_~qq~0#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnHeap(4);main_~pp~0#1.base, main_~pp~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;havoc main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call main_#t~malloc6#1.base, main_#t~malloc6#1.offset := #Ultimate.allocOnHeap(4);main_~qq~0#1.base, main_~qq~0#1.offset := main_#t~malloc6#1.base, main_#t~malloc6#1.offset;havoc main_#t~malloc6#1.base, main_#t~malloc6#1.offset;call write~int(main_#t~nondet7#1, main_~pp~0#1.base, main_~pp~0#1.offset, 4);havoc main_#t~nondet7#1;call write~int(main_#t~nondet8#1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);havoc main_#t~nondet8#1; 66#L28-3 [2022-11-02 21:11:50,484 INFO L750 eck$LassoCheckResult]: Loop: 66#L28-3 call main_#t~mem9#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4); 64#L28-1 assume !!(main_#t~mem9#1 > 1);havoc main_#t~mem9#1;call main_#t~mem10#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4);call write~int(main_#t~mem10#1, main_~pp~0#1.base, main_~pp~0#1.offset, 4);havoc main_#t~mem10#1;call write~int(-1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~pp~0#1.base, main_~pp~0#1.offset, 4); 62#L31 call rec(main_~pp~0#1.base, main_~pp~0#1.offset, main_#t~mem11#1);< 65#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 60#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 61#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 65#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 60#L9 assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 63#recFINAL assume true; 67#recEXIT >#31#return; 68#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 70#recFINAL assume true; 71#recEXIT >#33#return; 69#L31-1 havoc main_#t~mem11#1;call main_#t~mem12#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~pp~0#1.base, main_~pp~0#1.offset, 4);call write~int(main_#t~mem12#1 + main_#t~mem13#1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);havoc main_#t~mem12#1;havoc main_#t~mem13#1; 66#L28-3 [2022-11-02 21:11:50,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 2 times [2022-11-02 21:11:50,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:50,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547614370] [2022-11-02 21:11:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:50,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:50,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:50,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:50,501 INFO L85 PathProgramCache]: Analyzing trace with hash 198344305, now seen corresponding path program 1 times [2022-11-02 21:11:50,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:50,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841029313] [2022-11-02 21:11:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:50,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:50,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:11:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:50,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:11:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:11:50,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:50,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841029313] [2022-11-02 21:11:50,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841029313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:50,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160915398] [2022-11-02 21:11:50,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:50,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:50,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:50,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:51,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:11:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:51,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:11:51,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:51,159 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-02 21:11:51,161 INFO L390 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 43 treesize of output 26 [2022-11-02 21:11:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:52,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:52,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160915398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:52,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:52,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2022-11-02 21:11:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200519143] [2022-11-02 21:11:52,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:52,787 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 21:11:52,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 21:11:52,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=257, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:11:52,789 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. cyclomatic complexity: 4 Second operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 21:11:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:53,768 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-02 21:11:53,768 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2022-11-02 21:11:53,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-02 21:11:53,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 19 transitions. [2022-11-02 21:11:53,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-02 21:11:53,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-11-02 21:11:53,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2022-11-02 21:11:53,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:53,771 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-02 21:11:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2022-11-02 21:11:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-02 21:11:53,773 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) [2022-11-02 21:11:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-02 21:11:53,774 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-02 21:11:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:11:53,775 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-02 21:11:53,775 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 21:11:53,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2022-11-02 21:11:53,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-02 21:11:53,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:11:53,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:11:53,777 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 21:11:53,778 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:53,778 INFO L748 eck$LassoCheckResult]: Stem: 175#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 176#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~malloc6#1.base, main_#t~malloc6#1.offset, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem9#1, main_~pp~0#1.base, main_~pp~0#1.offset, main_~qq~0#1.base, main_~qq~0#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnHeap(4);main_~pp~0#1.base, main_~pp~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;havoc main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call main_#t~malloc6#1.base, main_#t~malloc6#1.offset := #Ultimate.allocOnHeap(4);main_~qq~0#1.base, main_~qq~0#1.offset := main_#t~malloc6#1.base, main_#t~malloc6#1.offset;havoc main_#t~malloc6#1.base, main_#t~malloc6#1.offset;call write~int(main_#t~nondet7#1, main_~pp~0#1.base, main_~pp~0#1.offset, 4);havoc main_#t~nondet7#1;call write~int(main_#t~nondet8#1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);havoc main_#t~nondet8#1; 186#L28-3 [2022-11-02 21:11:53,778 INFO L750 eck$LassoCheckResult]: Loop: 186#L28-3 call main_#t~mem9#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4); 181#L28-1 assume !!(main_#t~mem9#1 > 1);havoc main_#t~mem9#1;call main_#t~mem10#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4);call write~int(main_#t~mem10#1, main_~pp~0#1.base, main_~pp~0#1.offset, 4);havoc main_#t~mem10#1;call write~int(-1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~pp~0#1.base, main_~pp~0#1.offset, 4); 178#L31 call rec(main_~pp~0#1.base, main_~pp~0#1.offset, main_#t~mem11#1);< 182#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 177#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 179#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 182#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 177#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 179#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 182#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 177#L9 assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 180#recFINAL assume true; 183#recEXIT >#31#return; 184#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 187#recFINAL assume true; 191#recEXIT >#31#return; 189#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 190#recFINAL assume true; 188#recEXIT >#33#return; 185#L31-1 havoc main_#t~mem11#1;call main_#t~mem12#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~pp~0#1.base, main_~pp~0#1.offset, 4);call write~int(main_#t~mem12#1 + main_#t~mem13#1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);havoc main_#t~mem12#1;havoc main_#t~mem13#1; 186#L28-3 [2022-11-02 21:11:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 3 times [2022-11-02 21:11:53,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:53,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039335453] [2022-11-02 21:11:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:53,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:53,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:53,794 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1148543297, now seen corresponding path program 2 times [2022-11-02 21:11:53,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:53,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906111301] [2022-11-02 21:11:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:54,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:11:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:11:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:54,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:11:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:11:54,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:54,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906111301] [2022-11-02 21:11:54,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906111301] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:54,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558175906] [2022-11-02 21:11:54,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:11:54,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:54,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:54,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:54,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:11:54,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:11:54,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:54,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 21:11:54,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:54,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-11-02 21:11:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:11:54,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:11:55,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558175906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:55,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:11:55,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 21 [2022-11-02 21:11:55,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788857971] [2022-11-02 21:11:55,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:55,317 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 21:11:55,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:55,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:11:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:11:55,318 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand has 21 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 7 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-02 21:11:55,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:55,502 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-02 21:11:55,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2022-11-02 21:11:55,504 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-02 21:11:55,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 22 transitions. [2022-11-02 21:11:55,505 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-02 21:11:55,505 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-02 21:11:55,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2022-11-02 21:11:55,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:55,506 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-02 21:11:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2022-11-02 21:11:55,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-02 21:11:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:11:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-02 21:11:55,509 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-02 21:11:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:11:55,510 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-02 21:11:55,510 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-02 21:11:55,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 22 transitions. [2022-11-02 21:11:55,512 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-02 21:11:55,512 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:11:55,512 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:11:55,513 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 21:11:55,513 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:55,513 INFO L748 eck$LassoCheckResult]: Stem: 388#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 389#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~malloc6#1.base, main_#t~malloc6#1.offset, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem9#1, main_~pp~0#1.base, main_~pp~0#1.offset, main_~qq~0#1.base, main_~qq~0#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnHeap(4);main_~pp~0#1.base, main_~pp~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;havoc main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call main_#t~malloc6#1.base, main_#t~malloc6#1.offset := #Ultimate.allocOnHeap(4);main_~qq~0#1.base, main_~qq~0#1.offset := main_#t~malloc6#1.base, main_#t~malloc6#1.offset;havoc main_#t~malloc6#1.base, main_#t~malloc6#1.offset;call write~int(main_#t~nondet7#1, main_~pp~0#1.base, main_~pp~0#1.offset, 4);havoc main_#t~nondet7#1;call write~int(main_#t~nondet8#1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);havoc main_#t~nondet8#1; 399#L28-3 [2022-11-02 21:11:55,513 INFO L750 eck$LassoCheckResult]: Loop: 399#L28-3 call main_#t~mem9#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4); 394#L28-1 assume !!(main_#t~mem9#1 > 1);havoc main_#t~mem9#1;call main_#t~mem10#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4);call write~int(main_#t~mem10#1, main_~pp~0#1.base, main_~pp~0#1.offset, 4);havoc main_#t~mem10#1;call write~int(-1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~pp~0#1.base, main_~pp~0#1.offset, 4); 391#L31 call rec(main_~pp~0#1.base, main_~pp~0#1.offset, main_#t~mem11#1);< 395#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 390#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 392#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 395#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 390#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 392#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 395#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 390#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 392#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 395#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 390#L9 assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 393#recFINAL assume true; 396#recEXIT >#31#return; 397#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 400#recFINAL assume true; 407#recEXIT >#31#return; 406#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 405#recFINAL assume true; 404#recEXIT >#31#return; 402#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 403#recFINAL assume true; 401#recEXIT >#33#return; 398#L31-1 havoc main_#t~mem11#1;call main_#t~mem12#1 := read~int(main_~qq~0#1.base, main_~qq~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~pp~0#1.base, main_~pp~0#1.offset, 4);call write~int(main_#t~mem12#1 + main_#t~mem13#1, main_~qq~0#1.base, main_~qq~0#1.offset, 4);havoc main_#t~mem12#1;havoc main_#t~mem13#1; 399#L28-3 [2022-11-02 21:11:55,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:55,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 4 times [2022-11-02 21:11:55,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:55,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130531567] [2022-11-02 21:11:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:55,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:55,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:55,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1161179343, now seen corresponding path program 3 times [2022-11-02 21:11:55,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:55,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724695257] [2022-11-02 21:11:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:55,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:55,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:55,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:55,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:55,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1853588851, now seen corresponding path program 1 times [2022-11-02 21:11:55,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:55,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944913088] [2022-11-02 21:11:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:55,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:55,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:55,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:59,472 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:11:59,473 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:11:59,473 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:11:59,473 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:11:59,473 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:11:59,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:11:59,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:11:59,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:11:59,474 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex1.i_Iteration4_Lasso [2022-11-02 21:11:59,474 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:11:59,474 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:11:59,491 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,499 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,501 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,504 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,507 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,510 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,512 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,514 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,516 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,518 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,870 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,873 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,875 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,879 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:11:59,881 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:12:00,412 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:12:00,421 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:12:00,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:00,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:00,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,465 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 [2022-11-02 21:12:00,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:00,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:12:00,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:00,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:00,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:00,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:12:00,486 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:12:00,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-02 21:12:00,495 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:12:00,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:00,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:00,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:00,537 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,548 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 [2022-11-02 21:12:00,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:00,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:12:00,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:00,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:00,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:00,563 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:12:00,563 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:12:00,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-02 21:12:00,572 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:12:00,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:00,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:00,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:00,620 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-02 21:12:00,624 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 [2022-11-02 21:12:00,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:00,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:12:00,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:00,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:00,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:00,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:12:00,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:12:00,636 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:12:00,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-11-02 21:12:00,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:00,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:00,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-02 21:12:00,663 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 [2022-11-02 21:12:00,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:00,673 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:12:00,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:00,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:00,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:00,674 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:12:00,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:12:00,684 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:12:00,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:00,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:00,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:00,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-02 21:12:00,716 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 [2022-11-02 21:12:00,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:00,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:00,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:00,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:00,731 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:12:00,731 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:12:00,734 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:12:00,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:00,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:00,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:00,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-02 21:12:00,768 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 [2022-11-02 21:12:00,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:00,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:12:00,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:00,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:00,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:00,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:12:00,778 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:12:00,779 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:12:00,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:00,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:00,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:00,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-02 21:12:00,807 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 [2022-11-02 21:12:00,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:00,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:12:00,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:00,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:00,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:00,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:12:00,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:12:00,851 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:12:00,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:00,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:00,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:00,891 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,900 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 [2022-11-02 21:12:00,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:00,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:12:00,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:00,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:00,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:00,914 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:12:00,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:12:00,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-02 21:12:00,926 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:12:00,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:00,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:00,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:00,966 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,977 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 [2022-11-02 21:12:00,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:00,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:12:00,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:00,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:00,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:00,992 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:12:00,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:12:00,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-02 21:12:01,003 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:12:01,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:01,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:01,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:01,028 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:01,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-02 21:12:01,030 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 [2022-11-02 21:12:01,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:01,040 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:01,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:01,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:01,046 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:12:01,047 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:12:01,056 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:12:01,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:01,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:01,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:01,084 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:01,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-02 21:12:01,088 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 [2022-11-02 21:12:01,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:12:01,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:12:01,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:12:01,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:12:01,108 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:12:01,109 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:12:01,117 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:12:01,128 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-02 21:12:01,128 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2022-11-02 21:12:01,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:12:01,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:01,136 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:01,138 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:12:01,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-02 21:12:01,160 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-11-02 21:12:01,161 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:12:01,161 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~qq~0#1.base) ULTIMATE.start_main_~qq~0#1.offset)_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~qq~0#1.base) ULTIMATE.start_main_~qq~0#1.offset)_1 Supporting invariants [] [2022-11-02 21:12:01,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:01,244 INFO L156 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2022-11-02 21:12:01,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:01,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:12:01,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:01,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-02 21:12:01,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:01,479 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-02 21:12:01,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 84 [2022-11-02 21:12:01,493 INFO L390 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 14 [2022-11-02 21:12:01,526 INFO L390 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 12 treesize of output 11 [2022-11-02 21:12:01,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:12:01,590 INFO L390 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 0 case distinctions, treesize of input 44 treesize of output 17 [2022-11-02 21:12:01,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-11-02 21:12:01,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c65335a-bd76-4029-b8d7-ada4b8e991d3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:02,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:02,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:02,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:02,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:02,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:02,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:02,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:12:02,422 INFO L356 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2022-11-02 21:12:02,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 81 [2022-11-02 21:12:02,487 INFO L356 Elim1Store]: treesize reduction 50, result has 38.3 percent of original size [2022-11-02 21:12:02,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 80 [2022-11-02 21:12:02,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-02 21:12:02,578 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 1 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:12:02,582 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 15 loop predicates [2022-11-02 21:12:02,583 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 21:12:02,668 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. Second operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Result 28 states and 32 transitions. Complement of second has 9 states. [2022-11-02 21:12:02,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-02 21:12:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 21:12:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2022-11-02 21:12:02,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 6 transitions. Stem has 2 letters. Loop has 26 letters. [2022-11-02 21:12:02,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:12:02,673 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 21:12:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:12:02,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-02 21:12:02,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:02,856 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-02 21:12:02,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 84 [2022-11-02 21:12:02,871 INFO L390 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 14 [2022-11-02 21:12:02,885 INFO L390 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 12 treesize of output 11 [2022-11-02 21:12:02,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:12:02,939 INFO L390 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 0 case distinctions, treesize of input 44 treesize of output 17 [2022-11-02 21:12:02,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-11-02 21:12:03,386 INFO L390 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 6 treesize of output 5 [2022-11-02 21:12:03,526 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 21:12:03,526 INFO L390 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 12 treesize of output 14 [2022-11-02 21:12:03,752 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-02 21:12:03,752 INFO L390 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 17 treesize of output 30 [2022-11-02 21:12:05,289 INFO L356 Elim1Store]: treesize reduction 251, result has 35.1 percent of original size [2022-11-02 21:12:05,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 191 treesize of output 460 [2022-11-02 21:12:05,584 INFO L244 Elim1Store]: Index analysis took 237 ms [2022-11-02 21:12:07,039 INFO L356 Elim1Store]: treesize reduction 8, result has 97.8 percent of original size [2022-11-02 21:12:07,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 182 treesize of output 514 [2022-11-02 21:12:07,216 INFO L390 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 7 treesize of output 5