./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02dc726982da9e300f34803a4bdbb3c0165037d3f4471bd0e009c42cfb19ed24 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:58:10,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:58:10,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:58:10,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:58:10,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:58:10,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:58:10,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:58:10,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:58:10,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:58:10,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:58:10,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:58:10,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:58:10,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:58:10,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:58:10,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:58:10,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:58:10,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:58:10,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:58:10,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:58:10,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:58:10,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:58:10,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:58:10,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:58:10,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:58:10,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:58:10,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:58:10,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:58:10,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:58:10,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:58:10,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:58:10,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:58:10,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:58:10,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:58:10,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:58:10,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:58:10,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:58:10,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:58:10,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:58:10,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:58:10,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:58:10,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:58:10,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-25 16:58:10,698 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:58:10,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:58:10,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:58:10,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:58:10,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:58:10,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:58:10,701 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:58:10,701 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 16:58:10,702 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 16:58:10,702 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 16:58:10,703 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 16:58:10,703 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 16:58:10,704 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 16:58:10,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:58:10,704 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:58:10,704 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:58:10,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:58:10,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:58:10,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:58:10,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 16:58:10,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 16:58:10,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 16:58:10,706 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:58:10,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:58:10,706 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 16:58:10,706 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:58:10,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 16:58:10,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:58:10,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:58:10,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:58:10,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:58:10,709 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 16:58:10,709 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_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02dc726982da9e300f34803a4bdbb3c0165037d3f4471bd0e009c42cfb19ed24 [2022-11-25 16:58:10,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:58:10,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:58:10,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:58:11,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:58:11,000 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:58:11,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/recursive-simple/fibo_5-2.c [2022-11-25 16:58:16,222 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:58:16,425 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:58:16,426 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/sv-benchmarks/c/recursive-simple/fibo_5-2.c [2022-11-25 16:58:16,434 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/data/7365aea03/f7fad2c9c59a446fafaec6a1d3e82111/FLAGbbc101837 [2022-11-25 16:58:16,459 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/data/7365aea03/f7fad2c9c59a446fafaec6a1d3e82111 [2022-11-25 16:58:16,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:58:16,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:58:16,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:58:16,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:58:16,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:58:16,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777f4d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16, skipping insertion in model container [2022-11-25 16:58:16,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:58:16,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:58:16,645 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/sv-benchmarks/c/recursive-simple/fibo_5-2.c[740,753] [2022-11-25 16:58:16,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:58:16,662 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:58:16,680 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/sv-benchmarks/c/recursive-simple/fibo_5-2.c[740,753] [2022-11-25 16:58:16,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:58:16,695 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:58:16,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16 WrapperNode [2022-11-25 16:58:16,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:58:16,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:58:16,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:58:16,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:58:16,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,730 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-25 16:58:16,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:58:16,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:58:16,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:58:16,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:58:16,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,748 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:58:16,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:58:16,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:58:16,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:58:16,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (1/1) ... [2022-11-25 16:58:16,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:16,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:16,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:16,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 16:58:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:58:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:58:16,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:58:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:58:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-25 16:58:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-25 16:58:16,908 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:58:16,910 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:58:17,007 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:58:17,014 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:58:17,014 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 16:58:17,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:58:17 BoogieIcfgContainer [2022-11-25 16:58:17,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:58:17,018 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 16:58:17,018 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 16:58:17,022 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 16:58:17,023 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 16:58:17,024 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 04:58:16" (1/3) ... [2022-11-25 16:58:17,025 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6cdf9287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 04:58:17, skipping insertion in model container [2022-11-25 16:58:17,025 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 16:58:17,025 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:16" (2/3) ... [2022-11-25 16:58:17,026 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6cdf9287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 04:58:17, skipping insertion in model container [2022-11-25 16:58:17,026 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 16:58:17,026 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:58:17" (3/3) ... [2022-11-25 16:58:17,028 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_5-2.c [2022-11-25 16:58:17,087 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 16:58:17,087 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 16:58:17,087 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 16:58:17,087 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 16:58:17,088 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 16:58:17,088 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 16:58:17,088 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 16:58:17,088 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 16:58:17,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 16:58:17,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 16:58:17,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 16:58:17,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 16:58:17,124 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 16:58:17,124 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 16:58:17,124 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 16:58:17,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 16:58:17,127 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 16:58:17,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 16:58:17,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 16:58:17,128 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 16:58:17,128 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 16:58:17,136 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 6#fiboENTRYtrue [2022-11-25 16:58:17,136 INFO L750 eck$LassoCheckResult]: Loop: 6#fiboENTRYtrue ~n := #in~n; 7#L8true assume !(~n < 1); 9#L10true assume !(1 == ~n); 14#L13true call #t~ret4 := fibo(~n - 1);< 6#fiboENTRYtrue [2022-11-25 16:58:17,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2022-11-25 16:58:17,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:17,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584899214] [2022-11-25 16:58:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:17,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:17,249 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:58:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:17,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:58:17,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:17,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2022-11-25 16:58:17,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:17,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015903067] [2022-11-25 16:58:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:17,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:17,288 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:58:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:17,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:58:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:17,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2022-11-25 16:58:17,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:17,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744995400] [2022-11-25 16:58:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:17,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:17,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:58:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:17,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:58:17,486 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 16:58:17,487 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 16:58:17,487 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 16:58:17,487 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 16:58:17,488 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 16:58:17,488 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:17,488 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 16:58:17,488 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 16:58:17,488 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration1_Loop [2022-11-25 16:58:17,489 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 16:58:17,489 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 16:58:17,518 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:17,554 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:17,558 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:17,561 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:17,588 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:17,707 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 16:58:17,708 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 16:58:17,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:17,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:17,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:17,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:17,717 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:17,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-25 16:58:17,752 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 16:58:17,752 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 16:58:17,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:17,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:17,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:17,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:17,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:17,777 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:17,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-25 16:58:17,802 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 16:58:17,802 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 16:58:17,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:17,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:17,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:17,813 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:17,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-25 16:58:17,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:17,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:17,832 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 16:58:17,832 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 16:58:17,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:17,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:17,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:17,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:17,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-25 16:58:17,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:17,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:17,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:17,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:17,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:17,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:17,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 16:58:17,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:17,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-25 16:58:17,956 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 16:58:17,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-11-25 16:58:17,964 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 16:58:17,964 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 16:58:17,964 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 16:58:17,965 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 16:58:17,965 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 16:58:17,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:17,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 16:58:17,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 16:58:17,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration1_Loop [2022-11-25 16:58:17,965 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 16:58:17,965 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 16:58:17,967 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:17,970 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:17,973 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:17,976 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:17,985 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:18,033 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 16:58:18,037 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 16:58:18,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:18,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:18,040 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:18,048 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:18,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:18,061 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:18,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:18,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:18,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:18,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:18,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:18,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-25 16:58:18,072 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 16:58:18,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:18,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:18,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:18,082 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:18,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-25 16:58:18,084 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:18,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:18,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:18,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:18,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:18,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:18,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:18,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:18,107 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 16:58:18,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-11-25 16:58:18,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:18,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:18,117 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:18,127 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:18,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:18,140 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:18,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:18,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:18,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:18,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:18,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:18,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-25 16:58:18,156 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 16:58:18,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:18,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:18,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:18,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:18,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-25 16:58:18,164 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:18,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:18,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:18,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:18,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:18,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:18,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:18,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:18,185 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 16:58:18,192 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 16:58:18,193 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 16:58:18,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:18,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:18,203 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:18,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-25 16:58:18,205 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 16:58:18,206 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 16:58:18,206 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 16:58:18,206 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-25 16:58:18,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:18,212 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 16:58:18,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:18,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:58:18,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:18,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:58:18,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:18,465 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-25 16:58:18,467 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:18,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2022-11-25 16:58:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-25 16:58:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-25 16:58:18,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-25 16:58:18,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:18,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-25 16:58:18,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:18,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-25 16:58:18,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:18,618 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-11-25 16:58:18,628 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 16:58:18,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2022-11-25 16:58:18,644 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-25 16:58:18,644 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-25 16:58:18,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-11-25 16:58:18,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 16:58:18,645 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-25 16:58:18,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-11-25 16:58:18,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-11-25 16:58:18,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 16:58:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-25 16:58:18,676 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-25 16:58:18,676 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-25 16:58:18,677 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-25 16:58:18,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-11-25 16:58:18,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 16:58:18,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 16:58:18,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 16:58:18,678 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:18,679 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:18,679 INFO L748 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 122#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 128#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 131#fiboENTRY ~n := #in~n; 132#L8 assume !(~n < 1); 137#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 127#fiboENTRY ~n := #in~n; 133#L8 assume ~n < 1;#res := 0; 134#fiboFINAL assume true; 135#fiboEXIT >#33#return; 124#L13-1 [2022-11-25 16:58:18,679 INFO L750 eck$LassoCheckResult]: Loop: 124#L13-1 call #t~ret5 := fibo(~n - 2);< 125#fiboENTRY ~n := #in~n; 140#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 123#L13 call #t~ret4 := fibo(~n - 1);< 125#fiboENTRY ~n := #in~n; 140#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 138#fiboEXIT >#33#return; 124#L13-1 [2022-11-25 16:58:18,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2022-11-25 16:58:18,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:18,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370988842] [2022-11-25 16:58:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:18,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:58:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:18,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:58:18,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:18,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370988842] [2022-11-25 16:58:18,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370988842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:18,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:18,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:58:18,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301209409] [2022-11-25 16:58:18,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:18,894 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 16:58:18,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:18,895 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2022-11-25 16:58:18,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:18,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954013839] [2022-11-25 16:58:18,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:18,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:58:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:58:19,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:19,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954013839] [2022-11-25 16:58:19,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954013839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:19,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:19,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:58:19,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137002068] [2022-11-25 16:58:19,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:19,007 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 16:58:19,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:58:19,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:58:19,011 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 16:58:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:58:19,094 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-11-25 16:58:19,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-11-25 16:58:19,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 16:58:19,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-11-25 16:58:19,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-25 16:58:19,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-25 16:58:19,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-11-25 16:58:19,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 16:58:19,100 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-25 16:58:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-11-25 16:58:19,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-25 16:58:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 16:58:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-25 16:58:19,104 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-25 16:58:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:58:19,105 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-25 16:58:19,105 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-25 16:58:19,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-11-25 16:58:19,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-25 16:58:19,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 16:58:19,106 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 16:58:19,107 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:19,107 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:19,108 INFO L748 eck$LassoCheckResult]: Stem: 194#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 195#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 200#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 204#fiboENTRY ~n := #in~n; 206#L8 assume !(~n < 1); 210#L10 assume !(1 == ~n); 199#L13 call #t~ret4 := fibo(~n - 1);< 201#fiboENTRY ~n := #in~n; 207#L8 assume !(~n < 1); 209#L10 assume 1 == ~n;#res := 1; 211#fiboFINAL assume true; 213#fiboEXIT >#33#return; 197#L13-1 [2022-11-25 16:58:19,108 INFO L750 eck$LassoCheckResult]: Loop: 197#L13-1 call #t~ret5 := fibo(~n - 2);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 215#fiboFINAL assume true; 212#fiboEXIT >#33#return; 197#L13-1 [2022-11-25 16:58:19,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:19,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2022-11-25 16:58:19,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:19,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930271941] [2022-11-25 16:58:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:19,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:58:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:19,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930271941] [2022-11-25 16:58:19,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930271941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:58:19,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436890294] [2022-11-25 16:58:19,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:19,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:19,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:19,203 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:58:19,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 16:58:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:19,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:58:19,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:19,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:58:19,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:19,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436890294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:58:19,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:58:19,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-25 16:58:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064984318] [2022-11-25 16:58:19,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:58:19,458 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 16:58:19,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2022-11-25 16:58:19,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:19,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593677168] [2022-11-25 16:58:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:19,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:19,464 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:58:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:19,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:58:19,630 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 16:58:19,630 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 16:58:19,631 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 16:58:19,631 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 16:58:19,631 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 16:58:19,631 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:19,631 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 16:58:19,631 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 16:58:19,632 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration3_Loop [2022-11-25 16:58:19,632 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 16:58:19,632 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 16:58:19,633 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:19,636 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:19,639 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:19,648 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:19,692 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 16:58:19,692 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 16:58:19,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:19,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:19,694 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:19,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:19,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:19,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-25 16:58:19,723 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 16:58:19,723 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 16:58:19,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:19,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:19,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:19,728 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:19,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-25 16:58:19,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:19,731 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:19,743 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 16:58:19,743 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 16:58:19,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:19,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:19,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:19,748 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:19,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-25 16:58:19,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:19,755 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:19,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:19,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:19,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:19,797 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:19,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 16:58:19,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:19,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-25 16:58:20,500 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 16:58:20,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:20,504 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 16:58:20,504 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 16:58:20,504 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 16:58:20,504 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 16:58:20,504 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 16:58:20,505 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:20,505 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 16:58:20,505 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 16:58:20,505 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration3_Loop [2022-11-25 16:58:20,505 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 16:58:20,505 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 16:58:20,506 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:20,510 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:20,513 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:20,521 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:20,568 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 16:58:20,569 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 16:58:20,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:20,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:20,570 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:20,576 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:20,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:20,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:20,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:20,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:20,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:20,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:20,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:20,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-25 16:58:20,600 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 16:58:20,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:20,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:20,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:20,610 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:20,624 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:20,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:20,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:20,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:20,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:20,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:20,638 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:20,638 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:20,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-25 16:58:20,655 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 16:58:20,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:20,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:20,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:20,660 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:20,672 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:20,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:20,686 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:20,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:20,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:20,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:20,688 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:20,688 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:20,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-25 16:58:20,698 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 16:58:20,703 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 16:58:20,703 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 16:58:20,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:20,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:20,707 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:20,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-25 16:58:20,711 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 16:58:20,715 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 16:58:20,715 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 16:58:20,715 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-25 16:58:20,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-11-25 16:58:20,720 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 16:58:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:20,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:58:20,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:20,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 16:58:20,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:21,014 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-25 16:58:21,014 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 16:58:21,286 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2022-11-25 16:58:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-25 16:58:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 16:58:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-25 16:58:21,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-11-25 16:58:21,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:21,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-11-25 16:58:21,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:21,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-11-25 16:58:21,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:21,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-11-25 16:58:21,296 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-25 16:58:21,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-11-25 16:58:21,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-11-25 16:58:21,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-11-25 16:58:21,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-11-25 16:58:21,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 16:58:21,302 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-11-25 16:58:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-11-25 16:58:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-11-25 16:58:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2022-11-25 16:58:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-11-25 16:58:21,317 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-11-25 16:58:21,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:21,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 16:58:21,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-25 16:58:21,318 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 16:58:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:58:21,465 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-11-25 16:58:21,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-11-25 16:58:21,480 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-25 16:58:21,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-11-25 16:58:21,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-11-25 16:58:21,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-11-25 16:58:21,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-11-25 16:58:21,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 16:58:21,484 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-11-25 16:58:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-11-25 16:58:21,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-11-25 16:58:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2022-11-25 16:58:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-11-25 16:58:21,495 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-25 16:58:21,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:58:21,496 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-25 16:58:21,497 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-25 16:58:21,497 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-11-25 16:58:21,498 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-25 16:58:21,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 16:58:21,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 16:58:21,500 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:21,500 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:21,500 INFO L748 eck$LassoCheckResult]: Stem: 787#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 788#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 802#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 804#fiboENTRY ~n := #in~n; 852#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 801#L13 call #t~ret4 := fibo(~n - 1);< 803#fiboENTRY ~n := #in~n; 813#L8 assume !(~n < 1); 818#L10 assume !(1 == ~n); 824#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 850#L8 assume !(~n < 1); 848#L10 assume 1 == ~n;#res := 1; 846#fiboFINAL assume true; 844#fiboEXIT >#33#return; 790#L13-1 call #t~ret5 := fibo(~n - 2);< 842#fiboENTRY ~n := #in~n; 890#L8 assume ~n < 1;#res := 0; 889#fiboFINAL assume true; 888#fiboEXIT >#35#return; 887#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 885#fiboFINAL assume true; 877#fiboEXIT >#33#return; 820#L13-1 [2022-11-25 16:58:21,500 INFO L750 eck$LassoCheckResult]: Loop: 820#L13-1 call #t~ret5 := fibo(~n - 2);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume !(1 == ~n); 822#L13 call #t~ret4 := fibo(~n - 1);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume 1 == ~n;#res := 1; 823#fiboFINAL assume true; 874#fiboEXIT >#33#return; 820#L13-1 [2022-11-25 16:58:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 1 times [2022-11-25 16:58:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:21,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631886770] [2022-11-25 16:58:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:21,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:21,515 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:58:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:21,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:58:21,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:21,529 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 2 times [2022-11-25 16:58:21,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:21,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330900764] [2022-11-25 16:58:21,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:21,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:21,534 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:58:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:21,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:58:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2043808913, now seen corresponding path program 2 times [2022-11-25 16:58:21,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:21,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827179378] [2022-11-25 16:58:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:21,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 16:58:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 16:58:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:21,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:58:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 16:58:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 16:58:21,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:21,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827179378] [2022-11-25 16:58:21,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827179378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:58:21,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957765098] [2022-11-25 16:58:21,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:58:21,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:21,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:21,747 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:58:21,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 16:58:21,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:21,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:58:21,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:58:21,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 16:58:21,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 16:58:21,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:58:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 16:58:22,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957765098] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:58:22,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:58:22,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2022-11-25 16:58:22,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957945095] [2022-11-25 16:58:22,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:58:22,244 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 16:58:22,244 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 16:58:22,244 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 16:58:22,244 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 16:58:22,244 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 16:58:22,245 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:22,245 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 16:58:22,245 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 16:58:22,245 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration4_Loop [2022-11-25 16:58:22,245 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 16:58:22,245 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 16:58:22,246 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:22,250 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:22,253 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:22,262 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:22,300 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 16:58:22,300 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 16:58:22,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:22,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:22,301 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:22,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-25 16:58:22,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:22,309 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:22,331 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 16:58:22,331 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 16:58:22,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:22,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:22,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:22,342 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:22,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:22,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:22,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-25 16:58:22,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 16:58:22,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 16:58:22,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:22,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:22,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:22,385 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:22,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:22,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:22,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-25 16:58:22,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:22,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:22,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:22,441 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:22,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 16:58:22,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:22,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-25 16:58:23,067 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 16:58:23,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:23,072 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 16:58:23,072 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 16:58:23,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 16:58:23,073 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 16:58:23,073 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 16:58:23,073 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:23,073 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 16:58:23,073 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 16:58:23,073 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration4_Loop [2022-11-25 16:58:23,073 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 16:58:23,073 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 16:58:23,074 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:23,077 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:23,085 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:23,088 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:23,129 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 16:58:23,129 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 16:58:23,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:23,131 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:23,134 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:23,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-25 16:58:23,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:23,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:23,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:23,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:23,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:23,149 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:23,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:23,163 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 16:58:23,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:23,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:23,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:23,174 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:23,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-25 16:58:23,181 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:23,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:23,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:23,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:23,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:23,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:23,196 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:23,196 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:23,206 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 16:58:23,211 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 16:58:23,211 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 16:58:23,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:23,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:23,215 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:23,219 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 16:58:23,219 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 16:58:23,219 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 16:58:23,219 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-25 16:58:23,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-25 16:58:23,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:23,230 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 16:58:23,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:23,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 16:58:23,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:23,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 16:58:23,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:23,628 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-25 16:58:23,628 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 16:58:23,838 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 175 states and 233 transitions. Complement of second has 33 states. [2022-11-25 16:58:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-25 16:58:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 16:58:23,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-25 16:58:23,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-25 16:58:23,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:23,841 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 16:58:23,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:23,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 16:58:23,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:24,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:24,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 16:58:24,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:24,257 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-25 16:58:24,258 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 16:58:24,437 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 300 states and 403 transitions. Complement of second has 25 states. [2022-11-25 16:58:24,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-11-25 16:58:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 16:58:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-11-25 16:58:24,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-25 16:58:24,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:24,440 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 16:58:24,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:24,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 16:58:24,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:24,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 16:58:24,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:24,833 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-25 16:58:24,833 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 16:58:25,083 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 858 states and 1136 transitions. Complement of second has 130 states. [2022-11-25 16:58:25,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-25 16:58:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 16:58:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2022-11-25 16:58:25,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-25 16:58:25,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:25,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 42 letters. Loop has 10 letters. [2022-11-25 16:58:25,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:25,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 20 letters. [2022-11-25 16:58:25,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:25,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 858 states and 1136 transitions. [2022-11-25 16:58:25,103 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-11-25 16:58:25,117 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 858 states to 430 states and 620 transitions. [2022-11-25 16:58:25,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 163 [2022-11-25 16:58:25,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2022-11-25 16:58:25,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 620 transitions. [2022-11-25 16:58:25,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 16:58:25,119 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 620 transitions. [2022-11-25 16:58:25,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 620 transitions. [2022-11-25 16:58:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 352. [2022-11-25 16:58:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 235 states have internal predecessors, (265), 75 states have call successors, (84), 46 states have call predecessors, (84), 56 states have return successors, (136), 70 states have call predecessors, (136), 71 states have call successors, (136) [2022-11-25 16:58:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2022-11-25 16:58:25,195 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 485 transitions. [2022-11-25 16:58:25,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:25,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:58:25,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:58:25,197 INFO L87 Difference]: Start difference. First operand 352 states and 485 transitions. Second operand has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-25 16:58:25,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:58:25,492 INFO L93 Difference]: Finished difference Result 143 states and 171 transitions. [2022-11-25 16:58:25,493 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 143 states and 171 transitions. [2022-11-25 16:58:25,495 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-25 16:58:25,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 143 states to 141 states and 167 transitions. [2022-11-25 16:58:25,497 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2022-11-25 16:58:25,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 101 [2022-11-25 16:58:25,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 167 transitions. [2022-11-25 16:58:25,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 16:58:25,499 INFO L218 hiAutomatonCegarLoop]: Abstraction has 141 states and 167 transitions. [2022-11-25 16:58:25,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 167 transitions. [2022-11-25 16:58:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 109. [2022-11-25 16:58:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 74 states have internal predecessors, (82), 20 states have call successors, (24), 17 states have call predecessors, (24), 15 states have return successors, (22), 17 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-25 16:58:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2022-11-25 16:58:25,517 INFO L240 hiAutomatonCegarLoop]: Abstraction has 109 states and 128 transitions. [2022-11-25 16:58:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 16:58:25,524 INFO L428 stractBuchiCegarLoop]: Abstraction has 109 states and 128 transitions. [2022-11-25 16:58:25,526 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-25 16:58:25,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 128 transitions. [2022-11-25 16:58:25,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-25 16:58:25,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 16:58:25,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 16:58:25,528 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 6, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:25,530 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 16:58:25,531 INFO L748 eck$LassoCheckResult]: Stem: 3655#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 3656#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 3671#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 3672#fiboENTRY ~n := #in~n; 3715#L8 assume !(~n < 1); 3714#L10 assume !(1 == ~n); 3708#L13 call #t~ret4 := fibo(~n - 1);< 3713#fiboENTRY ~n := #in~n; 3712#L8 assume !(~n < 1); 3711#L10 assume !(1 == ~n); 3661#L13 call #t~ret4 := fibo(~n - 1);< 3662#fiboENTRY ~n := #in~n; 3676#L8 assume !(~n < 1); 3687#L10 assume !(1 == ~n); 3660#L13 call #t~ret4 := fibo(~n - 1);< 3662#fiboENTRY ~n := #in~n; 3677#L8 assume !(~n < 1); 3730#L10 assume 1 == ~n;#res := 1; 3729#fiboFINAL assume true; 3727#fiboEXIT >#33#return; 3674#L13-1 call #t~ret5 := fibo(~n - 2);< 3740#fiboENTRY ~n := #in~n; 3746#L8 assume ~n < 1;#res := 0; 3745#fiboFINAL assume true; 3739#fiboEXIT >#35#return; 3719#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3720#fiboFINAL assume true; 3710#fiboEXIT >#33#return; 3702#L13-1 call #t~ret5 := fibo(~n - 2);< 3707#fiboENTRY ~n := #in~n; 3706#L8 assume !(~n < 1); 3703#L10 assume !(1 == ~n); 3705#L13 call #t~ret4 := fibo(~n - 1);< 3659#fiboENTRY ~n := #in~n; 3760#L8 assume !(~n < 1); 3761#L10 assume !(1 == ~n); 3665#L13 call #t~ret4 := fibo(~n - 1);< 3732#fiboENTRY [2022-11-25 16:58:25,531 INFO L750 eck$LassoCheckResult]: Loop: 3732#fiboENTRY ~n := #in~n; 3763#L8 assume !(~n < 1); 3759#L10 assume !(1 == ~n); 3664#L13 call #t~ret4 := fibo(~n - 1);< 3732#fiboENTRY [2022-11-25 16:58:25,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash 561439143, now seen corresponding path program 3 times [2022-11-25 16:58:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:25,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699608793] [2022-11-25 16:58:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:25,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:25,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 16:58:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:25,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 16:58:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:25,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:58:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 16:58:25,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:25,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699608793] [2022-11-25 16:58:25,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699608793] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:58:25,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583803170] [2022-11-25 16:58:25,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:58:25,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:25,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:25,757 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:58:25,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-25 16:58:25,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-25 16:58:25,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:58:25,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 16:58:25,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 16:58:25,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:58:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 37 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 16:58:26,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583803170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:58:26,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:58:26,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 14 [2022-11-25 16:58:26,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652026217] [2022-11-25 16:58:26,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:58:26,090 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 16:58:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 2 times [2022-11-25 16:58:26,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:26,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060468991] [2022-11-25 16:58:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:26,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:26,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:58:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:58:26,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:58:26,137 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 16:58:26,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 16:58:26,137 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 16:58:26,137 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 16:58:26,137 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 16:58:26,138 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,138 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 16:58:26,138 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 16:58:26,138 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration5_Loop [2022-11-25 16:58:26,138 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 16:58:26,138 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 16:58:26,139 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:26,142 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:26,144 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:26,152 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:26,155 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:26,201 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 16:58:26,202 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 16:58:26,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:26,206 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:26,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:26,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:26,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-25 16:58:26,231 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 16:58:26,231 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 16:58:26,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-11-25 16:58:26,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:26,236 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:26,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:26,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:26,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-25 16:58:26,261 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 16:58:26,261 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 16:58:26,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:26,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:26,269 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:26,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 16:58:26,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:26,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-25 16:58:26,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:26,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:26,316 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:26,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-25 16:58:26,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 16:58:26,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 16:58:26,404 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 16:58:26,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:26,410 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 16:58:26,410 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 16:58:26,410 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 16:58:26,410 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 16:58:26,410 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 16:58:26,410 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,410 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 16:58:26,410 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 16:58:26,410 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration5_Loop [2022-11-25 16:58:26,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 16:58:26,411 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 16:58:26,411 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:26,414 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:26,417 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:26,419 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:26,427 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 16:58:26,465 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 16:58:26,465 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 16:58:26,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:26,469 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:26,475 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:26,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:26,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:26,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:26,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:26,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:26,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-25 16:58:26,489 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:26,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:26,507 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 16:58:26,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:26,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:26,516 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:26,522 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:26,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:26,534 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:26,535 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:26,535 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:26,535 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:26,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-25 16:58:26,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:26,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:26,559 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 16:58:26,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:26,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:26,569 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:26,573 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:26,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:26,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:26,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:26,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:26,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:26,586 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:26,586 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:26,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-25 16:58:26,591 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 16:58:26,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:26,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:26,601 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:26,606 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 16:58:26,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 16:58:26,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 16:58:26,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 16:58:26,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 16:58:26,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 16:58:26,619 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 16:58:26,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 16:58:26,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-25 16:58:26,635 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 16:58:26,637 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 16:58:26,637 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 16:58:26,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 16:58:26,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:26,641 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:26,643 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 16:58:26,643 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 16:58:26,643 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 16:58:26,643 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-25 16:58:26,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-25 16:58:26,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:26,652 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 16:58:26,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:26,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 16:58:26,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:26,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:58:26,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:26,967 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-25 16:58:26,968 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 16:58:27,035 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 119 states and 138 transitions. Complement of second has 13 states. [2022-11-25 16:58:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-25 16:58:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 16:58:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-25 16:58:27,037 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 37 letters. Loop has 4 letters. [2022-11-25 16:58:27,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:27,037 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 16:58:27,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:27,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 16:58:27,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:27,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:27,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:58:27,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:27,382 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-25 16:58:27,382 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 16:58:27,446 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 119 states and 138 transitions. Complement of second has 13 states. [2022-11-25 16:58:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-25 16:58:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 16:58:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-25 16:58:27,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 37 letters. Loop has 4 letters. [2022-11-25 16:58:27,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:27,448 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 16:58:27,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:27,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 16:58:27,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:27,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:58:27,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:27,760 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-25 16:58:27,761 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 16:58:27,839 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 160 states and 181 transitions. Complement of second has 14 states. [2022-11-25 16:58:27,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-25 16:58:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 16:58:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-11-25 16:58:27,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 37 letters. Loop has 4 letters. [2022-11-25 16:58:27,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:27,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 41 letters. Loop has 4 letters. [2022-11-25 16:58:27,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:27,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 37 letters. Loop has 8 letters. [2022-11-25 16:58:27,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 16:58:27,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 181 transitions. [2022-11-25 16:58:27,848 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 16:58:27,848 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 0 states and 0 transitions. [2022-11-25 16:58:27,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-25 16:58:27,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-25 16:58:27,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-25 16:58:27,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:27,849 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 16:58:27,849 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 16:58:27,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:27,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 16:58:27,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-25 16:58:27,850 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 9 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 16:58:27,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:58:27,850 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-25 16:58:27,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-25 16:58:27,851 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 16:58:27,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 16:58:27,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-25 16:58:27,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-25 16:58:27,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-25 16:58:27,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:27,851 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 16:58:27,852 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 16:58:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:58:27,854 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 16:58:27,854 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-25 16:58:27,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-25 16:58:27,854 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 16:58:27,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-25 16:58:27,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 04:58:27 BoogieIcfgContainer [2022-11-25 16:58:27,864 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 16:58:27,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:58:27,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:58:27,865 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:58:27,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:58:17" (3/4) ... [2022-11-25 16:58:27,869 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 16:58:27,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:58:27,871 INFO L158 Benchmark]: Toolchain (without parser) took 11405.86ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 145.3MB in the beginning and 142.7MB in the end (delta: 2.6MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2022-11-25 16:58:27,871 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:58:27,872 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.52ms. Allocated memory is still 195.0MB. Free memory was 145.3MB in the beginning and 135.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 16:58:27,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.09ms. Allocated memory is still 195.0MB. Free memory was 135.4MB in the beginning and 133.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:58:27,872 INFO L158 Benchmark]: Boogie Preprocessor took 19.90ms. Allocated memory is still 195.0MB. Free memory was 133.8MB in the beginning and 133.3MB in the end (delta: 507.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:58:27,873 INFO L158 Benchmark]: RCFGBuilder took 265.29ms. Allocated memory is still 195.0MB. Free memory was 132.8MB in the beginning and 123.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 16:58:27,873 INFO L158 Benchmark]: BuchiAutomizer took 10846.36ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 123.9MB in the beginning and 142.7MB in the end (delta: -18.9MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2022-11-25 16:58:27,874 INFO L158 Benchmark]: Witness Printer took 4.17ms. Allocated memory is still 234.9MB. Free memory is still 142.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:58:27,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.52ms. Allocated memory is still 195.0MB. Free memory was 145.3MB in the beginning and 135.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.09ms. Allocated memory is still 195.0MB. Free memory was 135.4MB in the beginning and 133.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.90ms. Allocated memory is still 195.0MB. Free memory was 133.8MB in the beginning and 133.3MB in the end (delta: 507.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 265.29ms. Allocated memory is still 195.0MB. Free memory was 132.8MB in the beginning and 123.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 10846.36ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 123.9MB in the beginning and 142.7MB in the end (delta: -18.9MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Witness Printer took 4.17ms. Allocated memory is still 234.9MB. Free memory is still 142.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 4 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.7s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 5.9s. Construction of modules took 0.6s. Büchi inclusion checks took 3.9s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 373 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 361 mSDsluCounter, 292 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 152 mSDsCounter, 186 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 646 IncrementalHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 186 mSolverCounterUnsat, 140 mSDtfsCounter, 646 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI1 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp90 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq187 hnf92 smp83 dnf100 smp100 tf110 neg97 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-25 16:58:27,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:28,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:28,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:28,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a9a479c-07c1-494e-a1b7-ba3dacaa704c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE