./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/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_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: no settings was sufficient --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:57:36,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:57:36,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:57:36,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:57:36,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:57:36,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:57:36,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:57:36,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:57:36,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:57:36,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:57:36,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:57:36,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:57:36,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:57:36,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:57:36,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:57:36,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:57:36,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:57:36,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:57:36,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:57:36,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:57:36,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:57:36,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:57:36,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:57:36,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:57:36,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:57:36,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:57:36,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:57:36,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:57:36,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:57:36,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:57:36,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:57:36,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:57:36,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:57:36,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:57:36,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:57:36,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:57:36,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:57:36,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:57:36,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:57:36,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:57:36,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:57:36,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:57:36,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:57:36,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:57:36,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:57:36,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:57:36,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:57:36,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:57:36,656 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:57:36,657 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:57:36,657 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:57:36,657 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:57:36,659 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:57:36,659 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:57:36,660 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:57:36,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:57:36,660 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:57:36,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:57:36,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:57:36,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:57:36,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:57:36,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:57:36,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:57:36,662 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:57:36,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:57:36,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:57:36,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:57:36,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:57:36,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:57:36,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:57:36,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:57:36,668 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:57:36,668 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_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 [2021-10-28 09:57:36,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:57:36,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:57:36,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:57:36,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:57:36,995 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:57:36,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2021-10-28 09:57:37,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/data/8b0fad6c3/6515d37976ff420bbbb15152c768db9b/FLAG651f08502 [2021-10-28 09:57:37,758 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:57:37,759 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2021-10-28 09:57:37,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/data/8b0fad6c3/6515d37976ff420bbbb15152c768db9b/FLAG651f08502 [2021-10-28 09:57:38,103 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/data/8b0fad6c3/6515d37976ff420bbbb15152c768db9b [2021-10-28 09:57:38,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:57:38,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:57:38,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:57:38,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:57:38,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:57:38,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7425879f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38, skipping insertion in model container [2021-10-28 09:57:38,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:57:38,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:57:38,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:57:38,382 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:57:38,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:57:38,410 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:57:38,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38 WrapperNode [2021-10-28 09:57:38,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:57:38,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:57:38,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:57:38,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:57:38,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:57:38,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:57:38,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:57:38,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:57:38,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:57:38,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:57:38,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:57:38,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:57:38,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (1/1) ... [2021-10-28 09:57:38,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:38,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:38,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:38,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:57:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:57:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-10-28 09:57:38,604 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-10-28 09:57:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:57:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:57:38,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:57:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:57:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:57:38,879 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:57:38,879 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:57:38,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:57:38 BoogieIcfgContainer [2021-10-28 09:57:38,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:57:38,883 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:57:38,883 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:57:38,887 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:57:38,888 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:57:38,888 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:57:38" (1/3) ... [2021-10-28 09:57:38,890 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@453e3dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:57:38, skipping insertion in model container [2021-10-28 09:57:38,891 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:57:38,891 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:57:38" (2/3) ... [2021-10-28 09:57:38,893 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@453e3dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:57:38, skipping insertion in model container [2021-10-28 09:57:38,893 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:57:38,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:57:38" (3/3) ... [2021-10-28 09:57:38,897 INFO L389 chiAutomizerObserver]: Analyzing ICFG rec_malloc_ex1.i [2021-10-28 09:57:39,025 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:57:39,025 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:57:39,025 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:57:39,025 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:57:39,025 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:57:39,025 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:57:39,026 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:57:39,026 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:57:39,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:57:39,069 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 09:57:39,070 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:57:39,070 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:57:39,078 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:57:39,078 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:39,078 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:57:39,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:57:39,082 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 09:57:39,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:57:39,083 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:57:39,084 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:57:39,084 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:39,092 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 6#L-1true havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~nondet8, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem13, main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_#t~malloc5.base, main_#t~malloc5.offset;call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;havoc main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(main_#t~nondet7, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet7;call write~int(main_#t~nondet8, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet8; 13#L28-3true [2021-10-28 09:57:39,093 INFO L793 eck$LassoCheckResult]: Loop: 13#L28-3true call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 11#L28-1true assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~mem10 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem10, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem10;call write~int(-1, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem11 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 5#L31true call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem11);< 12#recENTRYtrue ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 10#L9true assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 16#recFINALtrue assume true; 15#recEXITtrue >#33#return; 14#L31-1true havoc main_#t~mem11;call main_#t~mem12 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem13 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem12 + main_#t~mem13, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem12;havoc main_#t~mem13; 13#L28-3true [2021-10-28 09:57:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 1 times [2021-10-28 09:57:39,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:39,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064269607] [2021-10-28 09:57:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:39,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:39,318 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:57:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:39,432 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:57:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:39,437 INFO L85 PathProgramCache]: Analyzing trace with hash 51331199, now seen corresponding path program 1 times [2021-10-28 09:57:39,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:39,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164628031] [2021-10-28 09:57:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:39,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:39,560 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:57:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:39,646 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:57:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:39,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1890018113, now seen corresponding path program 1 times [2021-10-28 09:57:39,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:39,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715351998] [2021-10-28 09:57:39,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:39,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:57:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:57:39,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:40,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715351998] [2021-10-28 09:57:40,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715351998] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:57:40,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:40,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:57:40,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965959077] [2021-10-28 09:57:40,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:40,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:57:40,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:57:40,918 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:57:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:41,067 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-10-28 09:57:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:57:41,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2021-10-28 09:57:41,074 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 09:57:41,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 16 transitions. [2021-10-28 09:57:41,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-28 09:57:41,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-28 09:57:41,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-10-28 09:57:41,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:57:41,083 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 09:57:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-10-28 09:57:41,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 09:57:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:57:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-28 09:57:41,111 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 09:57:41,111 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 09:57:41,111 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:57:41,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-10-28 09:57:41,112 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 09:57:41,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:57:41,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:57:41,113 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:57:41,113 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:41,114 INFO L791 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 59#L-1 havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~nondet8, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem13, main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_#t~malloc5.base, main_#t~malloc5.offset;call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;havoc main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(main_#t~nondet7, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet7;call write~int(main_#t~nondet8, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet8; 66#L28-3 [2021-10-28 09:57:41,114 INFO L793 eck$LassoCheckResult]: Loop: 66#L28-3 call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 64#L28-1 assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~mem10 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem10, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem10;call write~int(-1, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem11 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 62#L31 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem11);< 65#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 60#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 61#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 65#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 60#L9 assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 63#recFINAL assume true; 67#recEXIT >#31#return; 68#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 70#recFINAL assume true; 71#recEXIT >#33#return; 69#L31-1 havoc main_#t~mem11;call main_#t~mem12 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem13 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem12 + main_#t~mem13, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem12;havoc main_#t~mem13; 66#L28-3 [2021-10-28 09:57:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 2 times [2021-10-28 09:57:41,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:41,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584107602] [2021-10-28 09:57:41,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:41,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:41,125 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:57:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:41,134 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:57:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:41,135 INFO L85 PathProgramCache]: Analyzing trace with hash 198344305, now seen corresponding path program 1 times [2021-10-28 09:57:41,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:41,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592829893] [2021-10-28 09:57:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:41,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:57:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:57:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:57:41,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:41,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592829893] [2021-10-28 09:57:41,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592829893] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:41,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876646875] [2021-10-28 09:57:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:41,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:41,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:41,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:41,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:57:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:41,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:57:41,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:41,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-10-28 09:57:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:57:41,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876646875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:41,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:57:41,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-10-28 09:57:41,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625806776] [2021-10-28 09:57:41,696 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:57:41,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:41,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:57:41,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:57:41,697 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. cyclomatic complexity: 4 Second operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:57:41,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:41,860 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-28 09:57:41,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:57:41,861 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2021-10-28 09:57:41,862 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 09:57:41,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 19 transitions. [2021-10-28 09:57:41,863 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:57:41,863 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:57:41,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2021-10-28 09:57:41,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:57:41,864 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-28 09:57:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2021-10-28 09:57:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-28 09:57:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:57:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-28 09:57:41,867 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-28 09:57:41,867 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-28 09:57:41,867 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:57:41,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2021-10-28 09:57:41,868 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 09:57:41,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:57:41,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:57:41,869 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:57:41,869 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:41,869 INFO L791 eck$LassoCheckResult]: Stem: 163#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 164#L-1 havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~nondet8, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem13, main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_#t~malloc5.base, main_#t~malloc5.offset;call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;havoc main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(main_#t~nondet7, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet7;call write~int(main_#t~nondet8, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet8; 174#L28-3 [2021-10-28 09:57:41,870 INFO L793 eck$LassoCheckResult]: Loop: 174#L28-3 call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 169#L28-1 assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~mem10 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem10, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem10;call write~int(-1, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem11 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 166#L31 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem11);< 170#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 165#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 167#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 170#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 165#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 167#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 170#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 165#L9 assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 168#recFINAL assume true; 171#recEXIT >#31#return; 172#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 175#recFINAL assume true; 179#recEXIT >#31#return; 177#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 178#recFINAL assume true; 176#recEXIT >#33#return; 173#L31-1 havoc main_#t~mem11;call main_#t~mem12 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem13 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem12 + main_#t~mem13, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem12;havoc main_#t~mem13; 174#L28-3 [2021-10-28 09:57:41,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 3 times [2021-10-28 09:57:41,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:41,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567657164] [2021-10-28 09:57:41,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:41,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:41,889 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:57:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:41,904 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:57:41,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:41,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1148543297, now seen corresponding path program 2 times [2021-10-28 09:57:41,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:41,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779362115] [2021-10-28 09:57:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:41,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:42,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:57:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:42,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:57:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:42,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:57:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 09:57:42,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:57:42,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779362115] [2021-10-28 09:57:42,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779362115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:42,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569649069] [2021-10-28 09:57:42,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:57:42,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:42,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:42,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:57:42,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:57:42,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:57:42,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:57:42,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:57:42,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:42,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-10-28 09:57:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:57:42,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569649069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:57:42,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:57:42,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-10-28 09:57:42,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432826266] [2021-10-28 09:57:42,612 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:57:42,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:57:42,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:57:42,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:57:42,617 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand has 15 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:57:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:57:42,801 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-10-28 09:57:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:57:42,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2021-10-28 09:57:42,804 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 09:57:42,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 22 transitions. [2021-10-28 09:57:42,806 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-28 09:57:42,806 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-10-28 09:57:42,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2021-10-28 09:57:42,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:57:42,807 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-28 09:57:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2021-10-28 09:57:42,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-28 09:57:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:57:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-28 09:57:42,811 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-28 09:57:42,811 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-28 09:57:42,811 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:57:42,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 22 transitions. [2021-10-28 09:57:42,813 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 09:57:42,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:57:42,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:57:42,814 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:57:42,814 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-28 09:57:42,815 INFO L791 eck$LassoCheckResult]: Stem: 313#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 314#L-1 havoc main_#res;havoc main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~nondet7, main_#t~nondet8, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem13, main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;havoc main_#t~malloc5.base, main_#t~malloc5.offset;call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;havoc main_#t~malloc6.base, main_#t~malloc6.offset;call write~int(main_#t~nondet7, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet7;call write~int(main_#t~nondet8, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet8; 324#L28-3 [2021-10-28 09:57:42,815 INFO L793 eck$LassoCheckResult]: Loop: 324#L28-3 call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 319#L28-1 assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~mem10 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem10, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem10;call write~int(-1, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem11 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 316#L31 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem11);< 320#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 315#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 317#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 320#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 315#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 317#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 320#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 315#L9 assume !(~i < 0);call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc3.base, #t~malloc3.offset;havoc #t~malloc3.base, #t~malloc3.offset;call write~int(#t~nondet4, ~ip~0.base, ~ip~0.offset, 4);havoc #t~nondet4; 317#L16 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 320#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 315#L9 assume ~i < 0;call #t~mem1 := read~int(~op.base, ~op.offset, 4);#t~post2 := #t~mem1;call write~int(#t~post2 - 1, ~op.base, ~op.offset, 4);havoc #t~mem1;havoc #t~post2; 318#recFINAL assume true; 321#recEXIT >#31#return; 322#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 325#recFINAL assume true; 332#recEXIT >#31#return; 331#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 330#recFINAL assume true; 329#recEXIT >#31#return; 327#L16-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 328#recFINAL assume true; 326#recEXIT >#33#return; 323#L31-1 havoc main_#t~mem11;call main_#t~mem12 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem13 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem12 + main_#t~mem13, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem12;havoc main_#t~mem13; 324#L28-3 [2021-10-28 09:57:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 4 times [2021-10-28 09:57:42,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:42,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765155724] [2021-10-28 09:57:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:42,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:42,823 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:57:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:42,830 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:57:42,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:42,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1161179343, now seen corresponding path program 3 times [2021-10-28 09:57:42,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:42,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956432950] [2021-10-28 09:57:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:42,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:42,863 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:57:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:42,931 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:57:42,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1853588851, now seen corresponding path program 1 times [2021-10-28 09:57:42,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:57:42,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360377048] [2021-10-28 09:57:42,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:57:42,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:57:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:42,996 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:57:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:57:43,066 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:57:47,510 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:57:47,511 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:57:47,511 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:57:47,511 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:57:47,512 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:57:47,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:47,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:57:47,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:57:47,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex1.i_Iteration4_Lasso [2021-10-28 09:57:47,513 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:57:47,513 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:57:47,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:47,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:57:48,299 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:57:48,304 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:57:48,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:48,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:57:48,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:57:48,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:57:48,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:57:48,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:57:48,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:57:48,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:57:48,359 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:57:48,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:57:48,361 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:57:48,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-28 09:57:48,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:48,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:57:48,392 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:57:48,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:57:48,399 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:57:48,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:57:48,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:57:48,399 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:57:48,400 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:57:48,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:57:48,401 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:57:48,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:48,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:48,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,422 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:57:48,424 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:57:48,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:57:48,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:57:48,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:57:48,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:57:48,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:57:48,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:57:48,432 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:57:48,435 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:57:48,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-28 09:57:48,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:48,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:57:48,464 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:57:48,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:57:48,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:57:48,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:57:48,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:57:48,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:57:48,472 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:57:48,472 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:57:48,509 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:57:48,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:48,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:48,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:57:48,555 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:57:48,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:57:48,562 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:57:48,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:57:48,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:57:48,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:57:48,565 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:57:48,565 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:57:48,567 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:57:48,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:48,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:48,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:57:48,595 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:57:48,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:57:48,602 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:57:48,602 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:57:48,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:57:48,606 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:57:48,606 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:57:48,609 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:57:48,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-28 09:57:48,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:48,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,634 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,636 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:57:48,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:57:48,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:57:48,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:57:48,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:57:48,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:57:48,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:57:48,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:57:48,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:57:48,645 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:57:48,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:48,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:48,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,671 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:57:48,673 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:57:48,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:57:48,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:57:48,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:57:48,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:57:48,687 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:57:48,687 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:57:48,702 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:57:48,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-10-28 09:57:48,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:48,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,727 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:57:48,732 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:57:48,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:57:48,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:57:48,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:57:48,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:57:48,745 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:57:48,746 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:57:48,760 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:57:48,786 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-28 09:57:48,786 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-10-28 09:57:48,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:57:48,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:57:48,801 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:57:48,809 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:57:48,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:57:48,832 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 09:57:48,832 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:57:48,832 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~qq~0.base) ULTIMATE.start_main_~qq~0.offset)_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~qq~0.base) ULTIMATE.start_main_~qq~0.offset)_1 Supporting invariants [] [2021-10-28 09:57:48,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:48,901 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2021-10-28 09:57:48,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:57:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:48,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:57:48,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:49,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-28 09:57:49,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:49,093 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-28 09:57:49,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-10-28 09:58:06,102 WARN L207 SmtUtils]: Spent 12.02 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-28 09:58:30,369 WARN L207 SmtUtils]: Spent 12.08 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-28 09:58:30,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2021-10-28 09:58:42,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:42,966 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:58:42,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 66 [2021-10-28 09:58:56,025 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 09:58:56,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 130 [2021-10-28 09:58:57,464 INFO L354 Elim1Store]: treesize reduction 556, result has 17.9 percent of original size [2021-10-28 09:58:57,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 179 treesize of output 211 [2021-10-28 09:58:57,637 INFO L354 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2021-10-28 09:58:57,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 215 treesize of output 237 [2021-10-28 09:58:57,737 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-10-28 09:58:57,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 238 treesize of output 246 [2021-10-28 09:58:57,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 09:58:58,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 09:58:58,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-10-28 09:58:59,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-10-28 09:59:00,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-10-28 09:59:01,448 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:59:01,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 249 [2021-10-28 09:59:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:59:03,373 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 19 loop predicates [2021-10-28 09:59:03,373 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 10:00:35,002 WARN L207 SmtUtils]: Spent 12.06 s on a formula simplification that was a NOOP. DAG size: 28 [2021-10-28 10:00:55,643 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. Second operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Result 56 states and 66 transitions. Complement of second has 29 states. [2021-10-28 10:00:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 10:00:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 10:00:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2021-10-28 10:00:55,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 13 transitions. Stem has 2 letters. Loop has 26 letters. [2021-10-28 10:00:55,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 10:00:55,649 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 10:00:55,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 10:00:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:00:55,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 10:00:55,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:00:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:00:55,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-28 10:00:55,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:00:55,979 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-28 10:00:55,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-10-28 10:01:30,616 WARN L207 SmtUtils]: Spent 12.06 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-28 10:01:54,860 WARN L207 SmtUtils]: Spent 12.08 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-28 10:01:54,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2021-10-28 10:02:07,346 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 10:02:07,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 66 [2021-10-28 10:02:08,440 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 10:02:08,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 130 [2021-10-28 10:02:09,800 INFO L354 Elim1Store]: treesize reduction 556, result has 17.9 percent of original size [2021-10-28 10:02:09,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 179 treesize of output 211 [2021-10-28 10:02:09,972 INFO L354 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2021-10-28 10:02:09,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 215 treesize of output 237 [2021-10-28 10:02:10,058 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-10-28 10:02:10,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 238 treesize of output 246 [2021-10-28 10:02:10,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 10:02:10,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 10:02:10,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-10-28 10:02:10,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-10-28 10:02:11,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 10:02:11,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 62 [2021-10-28 10:02:11,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2021-10-28 10:02:12,300 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 10:02:12,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2021-10-28 10:02:20,154 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 10:02:20,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 288 treesize of output 254 [2021-10-28 10:02:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 10:02:21,971 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 19 loop predicates [2021-10-28 10:02:21,971 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 10:03:52,356 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. Second operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Result 57 states and 67 transitions. Complement of second has 27 states. [2021-10-28 10:03:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 10:03:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 10:03:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2021-10-28 10:03:52,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 13 transitions. Stem has 2 letters. Loop has 26 letters. [2021-10-28 10:03:52,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 10:03:52,358 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 10:03:52,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 10:03:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:03:52,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 10:03:52,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:03:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:03:52,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-28 10:03:52,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:03:52,619 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-28 10:03:52,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-10-28 10:04:26,103 WARN L207 SmtUtils]: Spent 12.06 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-28 10:04:50,283 WARN L207 SmtUtils]: Spent 12.04 s on a formula simplification that was a NOOP. DAG size: 22 [2021-10-28 10:04:50,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2021-10-28 10:05:02,749 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 10:05:02,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 66 [2021-10-28 10:05:03,483 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 10:05:03,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 130 [2021-10-28 10:05:16,752 INFO L354 Elim1Store]: treesize reduction 556, result has 17.9 percent of original size [2021-10-28 10:05:16,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 179 treesize of output 211 [2021-10-28 10:05:16,925 INFO L354 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2021-10-28 10:05:16,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 215 treesize of output 237 [2021-10-28 10:05:17,077 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-10-28 10:05:17,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 238 treesize of output 246 [2021-10-28 10:05:17,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-10-28 10:05:18,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 10:05:18,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-10-28 10:05:18,954 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 10:05:18,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 53 [2021-10-28 10:05:19,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2021-10-28 10:05:19,752 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 10:05:19,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 38 [2021-10-28 10:05:19,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-10-28 10:05:21,724 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 10:05:21,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 389 treesize of output 391 [2021-10-28 10:05:28,398 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 10:05:28,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 277 treesize of output 249 [2021-10-28 10:05:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 10:05:30,015 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 19 loop predicates [2021-10-28 10:05:30,015 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 10:06:49,821 WARN L207 SmtUtils]: Spent 12.10 s on a formula simplification that was a NOOP. DAG size: 28 [2021-10-28 10:07:14,554 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. Second operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Result 56 states and 66 transitions. Complement of second has 29 states. [2021-10-28 10:07:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 10:07:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 10:07:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 26 transitions. [2021-10-28 10:07:14,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 26 transitions. Stem has 2 letters. Loop has 26 letters. [2021-10-28 10:07:14,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 10:07:14,562 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 10:07:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 10:07:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:07:14,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 10:07:14,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:07:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:07:14,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-28 10:07:14,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:07:14,924 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-28 10:07:14,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-10-28 10:07:21,134 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification that was a NOOP. DAG size: 25 [2021-10-28 10:07:27,383 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 21 [2021-10-28 10:07:39,763 WARN L207 SmtUtils]: Spent 12.06 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-28 10:07:40,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 66 [2021-10-28 10:07:40,972 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 10:07:40,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 133 [2021-10-28 10:07:42,299 INFO L354 Elim1Store]: treesize reduction 616, result has 9.0 percent of original size [2021-10-28 10:07:42,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 185 treesize of output 157 [2021-10-28 10:07:42,402 INFO L354 Elim1Store]: treesize reduction 73, result has 9.9 percent of original size [2021-10-28 10:07:42,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 161 treesize of output 153 [2021-10-28 10:07:42,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 167 [2021-10-28 10:07:42,660 INFO L354 Elim1Store]: treesize reduction 56, result has 30.9 percent of original size [2021-10-28 10:07:42,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 170 treesize of output 184 [2021-10-28 10:07:42,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 167 [2021-10-28 10:07:42,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 158 [2021-10-28 10:07:42,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 10:07:42,945 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 10:07:42,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 49 [2021-10-28 10:07:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 10:07:43,496 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 16 loop predicates [2021-10-28 10:07:43,496 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 10:08:22,916 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. Second operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Result 45 states and 57 transitions. Complement of second has 23 states. [2021-10-28 10:08:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-10-28 10:08:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 10:08:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2021-10-28 10:08:22,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 2 letters. Loop has 26 letters. [2021-10-28 10:08:22,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 10:08:22,919 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 10:08:22,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 10:08:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:08:22,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 10:08:22,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:08:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:08:23,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-28 10:08:23,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:08:23,273 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-28 10:08:23,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2021-10-28 10:08:29,789 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification that was a NOOP. DAG size: 25 [2021-10-28 10:08:36,110 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 21 [2021-10-28 10:08:48,477 WARN L207 SmtUtils]: Spent 12.05 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-28 10:09:00,794 WARN L207 SmtUtils]: Spent 12.12 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-28 10:09:00,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-10-28 10:09:01,356 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 10:09:01,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 74 [2021-10-28 10:09:02,301 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 10:09:02,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 141 [2021-10-28 10:09:03,721 INFO L354 Elim1Store]: treesize reduction 616, result has 9.0 percent of original size [2021-10-28 10:09:03,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 190 treesize of output 162 [2021-10-28 10:09:03,796 INFO L354 Elim1Store]: treesize reduction 73, result has 9.9 percent of original size [2021-10-28 10:09:03,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 166 treesize of output 162 [2021-10-28 10:09:03,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 176 [2021-10-28 10:09:03,982 INFO L354 Elim1Store]: treesize reduction 56, result has 30.9 percent of original size [2021-10-28 10:09:03,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 179 treesize of output 193 [2021-10-28 10:09:03,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 176 [2021-10-28 10:09:04,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 167 [2021-10-28 10:09:04,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 10:09:04,153 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 10:09:04,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-10-28 10:09:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 10:09:04,964 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 17 loop predicates [2021-10-28 10:09:04,965 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 10:09:12,143 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:12,145 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:36,476 WARN L207 SmtUtils]: Spent 12.10 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-28 10:09:36,515 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:36,519 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:36,523 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:48,540 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:48,541 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:48,543 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:48,544 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:48,557 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:48,565 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:48,567 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:48,575 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:48,576 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:48,577 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,494 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,495 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,504 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,509 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,512 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,516 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,518 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,519 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,521 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,727 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,728 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,729 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,733 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,734 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,735 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,741 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,742 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,766 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,768 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,770 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,771 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,773 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,775 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,777 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,781 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,782 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,783 WARN L278 uchiComplementFKVNwa]: big8 [2021-10-28 10:09:55,799 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Result 1236 states and 3764 transitions. Complement of second has 854 states 19 powerset states835 rank states. The highest rank that occured is 7 [2021-10-28 10:09:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 1 stem states 9 non-accepting loop states 1 accepting loop states [2021-10-28 10:09:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 10:09:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 50 transitions. [2021-10-28 10:09:55,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 50 transitions. Stem has 2 letters. Loop has 26 letters. [2021-10-28 10:09:55,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 10:09:55,808 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 10:09:55,809 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: no settings was sufficient at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.refineBuchi(BuchiCegarLoop.java:785) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:549) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-28 10:09:55,821 INFO L168 Benchmark]: Toolchain (without parser) took 737708.06 ms. Allocated memory was 94.4 MB in the beginning and 169.9 MB in the end (delta: 75.5 MB). Free memory was 63.6 MB in the beginning and 90.3 MB in the end (delta: -26.7 MB). Peak memory consumption was 49.8 MB. Max. memory is 16.1 GB. [2021-10-28 10:09:55,821 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 94.4 MB. Free memory is still 48.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 10:09:55,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.99 ms. Allocated memory is still 94.4 MB. Free memory was 63.4 MB in the beginning and 71.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 10:09:55,823 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.48 ms. Allocated memory is still 94.4 MB. Free memory was 71.0 MB in the beginning and 69.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 10:09:55,823 INFO L168 Benchmark]: Boogie Preprocessor took 40.32 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 68.6 MB in the end (delta: 912.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 10:09:55,824 INFO L168 Benchmark]: RCFGBuilder took 383.37 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 58.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 10:09:55,824 INFO L168 Benchmark]: BuchiAutomizer took 736933.93 ms. Allocated memory was 94.4 MB in the beginning and 169.9 MB in the end (delta: 75.5 MB). Free memory was 58.1 MB in the beginning and 90.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2021-10-28 10:09:55,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 94.4 MB. Free memory is still 48.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.99 ms. Allocated memory is still 94.4 MB. Free memory was 63.4 MB in the beginning and 71.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.48 ms. Allocated memory is still 94.4 MB. Free memory was 71.0 MB in the beginning and 69.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.32 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 68.6 MB in the end (delta: 912.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 383.37 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 58.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 736933.93 ms. Allocated memory was 94.4 MB in the beginning and 169.9 MB in the end (delta: 75.5 MB). Free memory was 58.1 MB in the beginning and 90.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: AssertionError: no settings was sufficient de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: no settings was sufficient: de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.refineBuchi(BuchiCegarLoop.java:785) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-28 10:09:55,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 10:09:56,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 10:09:56,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b08a999-b295-496b-aecc-d0bae7acf899/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...