./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8 --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 acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 --- 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-e04fb08 [2022-11-16 12:07:02,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:07:02,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:07:02,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:07:02,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:07:02,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:07:02,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:07:02,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:07:02,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:07:02,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:07:02,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:07:02,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:07:02,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:07:02,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:07:02,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:07:02,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:07:02,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:07:02,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:07:02,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:07:02,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:07:02,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:07:02,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:07:02,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:07:02,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:07:02,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:07:02,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:07:02,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:07:02,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:07:02,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:07:02,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:07:02,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:07:02,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:07:02,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:07:02,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:07:02,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:07:02,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:07:02,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:07:02,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:07:02,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:07:02,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:07:02,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:07:02,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-16 12:07:02,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:07:02,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:07:02,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:07:02,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:07:02,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:07:02,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:07:02,742 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:07:02,743 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 12:07:02,743 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 12:07:02,743 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 12:07:02,744 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 12:07:02,745 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 12:07:02,745 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 12:07:02,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:07:02,745 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:07:02,746 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:07:02,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:07:02,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:07:02,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:07:02,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 12:07:02,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 12:07:02,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 12:07:02,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:07:02,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:07:02,749 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 12:07:02,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:07:02,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 12:07:02,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:07:02,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:07:02,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:07:02,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:07:02,752 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 12:07:02,752 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_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 [2022-11-16 12:07:03,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:07:03,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:07:03,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:07:03,080 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:07:03,081 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:07:03,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/recursive-simple/fibo_10-1.c [2022-11-16 12:07:03,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/data/7854a37cf/8ad37d7278e14148ba76e6d8d406e1e8/FLAG4fab94874 [2022-11-16 12:07:03,708 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:07:03,709 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/sv-benchmarks/c/recursive-simple/fibo_10-1.c [2022-11-16 12:07:03,717 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/data/7854a37cf/8ad37d7278e14148ba76e6d8d406e1e8/FLAG4fab94874 [2022-11-16 12:07:04,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/data/7854a37cf/8ad37d7278e14148ba76e6d8d406e1e8 [2022-11-16 12:07:04,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:07:04,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:07:04,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:04,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:07:04,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:07:04,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc1f2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04, skipping insertion in model container [2022-11-16 12:07:04,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:07:04,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:07:04,314 WARN L229 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_a800478b-2187-4c0a-b75a-2d01eb73a33e/sv-benchmarks/c/recursive-simple/fibo_10-1.c[743,756] [2022-11-16 12:07:04,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:04,325 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:07:04,340 WARN L229 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_a800478b-2187-4c0a-b75a-2d01eb73a33e/sv-benchmarks/c/recursive-simple/fibo_10-1.c[743,756] [2022-11-16 12:07:04,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:04,355 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:07:04,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04 WrapperNode [2022-11-16 12:07:04,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:04,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:04,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:07:04,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:07:04,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,386 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-16 12:07:04,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:04,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:07:04,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:07:04,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:07:04,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:07:04,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:07:04,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:07:04,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:07:04,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (1/1) ... [2022-11-16 12:07:04,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:04,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:04,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:04,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 12:07:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:07:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:07:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:07:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:07:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-16 12:07:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-16 12:07:04,542 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:07:04,544 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:07:04,694 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:07:04,703 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:07:04,703 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:07:04,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:04 BoogieIcfgContainer [2022-11-16 12:07:04,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:07:04,706 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 12:07:04,706 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 12:07:04,710 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 12:07:04,711 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:07:04,711 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 12:07:04" (1/3) ... [2022-11-16 12:07:04,713 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33bef5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:07:04, skipping insertion in model container [2022-11-16 12:07:04,713 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:07:04,713 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:04" (2/3) ... [2022-11-16 12:07:04,713 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33bef5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:07:04, skipping insertion in model container [2022-11-16 12:07:04,714 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:07:04,714 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:04" (3/3) ... [2022-11-16 12:07:04,715 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_10-1.c [2022-11-16 12:07:04,778 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 12:07:04,779 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 12:07:04,779 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 12:07:04,779 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 12:07:04,779 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 12:07:04,779 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 12:07:04,779 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 12:07:04,779 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 12:07:04,784 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) [2022-11-16 12:07:04,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 12:07:04,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:07:04,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:07:04,825 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 12:07:04,825 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-16 12:07:04,825 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 12:07:04,826 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) [2022-11-16 12:07:04,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 12:07:04,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:07:04,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:07:04,829 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 12:07:04,829 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-16 12:07:04,837 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(12, 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 := 10; 5#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 6#fiboENTRYtrue [2022-11-16 12:07:04,838 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 [2022-11-16 12:07:04,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:04,844 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2022-11-16 12:07:04,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:04,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224854399] [2022-11-16 12:07:04,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:04,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:04,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:07:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:04,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:07:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:04,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2022-11-16 12:07:04,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:04,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300897511] [2022-11-16 12:07:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:04,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:07:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:04,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:07:04,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:04,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2022-11-16 12:07:04,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:04,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663395852] [2022-11-16 12:07:04,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:04,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:05,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:07:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:05,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:07:05,124 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:07:05,124 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:07:05,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:07:05,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:07:05,125 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:07:05,125 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,125 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:07:05,125 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:07:05,126 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration1_Loop [2022-11-16 12:07:05,126 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:07:05,126 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:07:05,142 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:05,153 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:05,156 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:05,160 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:05,180 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:05,258 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:07:05,259 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:07:05,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:05,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:05,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-16 12:07:05,316 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:07:05,316 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:07:05,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-16 12:07:05,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:05,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:05,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-16 12:07:05,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:07:05,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:07:05,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:05,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-16 12:07:05,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:05,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:05,427 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:07:05,427 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:07:05,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:05,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-16 12:07:05,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:05,444 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:05,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:05,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-16 12:07:05,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:07:05,486 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:05,560 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:07:05,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:05,567 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:07:05,567 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:07:05,567 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:07:05,567 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:07:05,567 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:07:05,567 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,567 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:07:05,568 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:07:05,568 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration1_Loop [2022-11-16 12:07:05,568 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:07:05,568 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:07:05,569 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:05,578 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:05,583 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:05,587 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:05,598 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:05,695 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:07:05,700 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:07:05,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-16 12:07:05,721 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 [2022-11-16 12:07:05,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:05,734 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:05,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:05,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:05,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:05,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:05,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:05,747 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:05,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:05,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,759 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,772 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 [2022-11-16 12:07:05,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:05,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:05,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:05,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:05,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:05,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:05,786 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:05,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-16 12:07:05,807 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:05,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:05,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,820 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 [2022-11-16 12:07:05,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:05,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:05,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:05,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:05,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:05,836 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:05,836 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:05,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-16 12:07:05,855 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:05,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:05,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,867 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-16 12:07:05,876 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 [2022-11-16 12:07:05,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:05,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:05,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:05,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:05,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:05,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:05,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:05,919 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:07:05,923 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:07:05,923 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 12:07:05,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:05,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,927 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-16 12:07:05,944 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:07:05,944 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:07:05,944 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:07:05,945 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-16 12:07:05,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:05,952 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:07:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:06,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:07:06,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:06,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:06,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:06,098 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 [2022-11-16 12:07:06,100 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) [2022-11-16 12:07:06,201 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. [2022-11-16 12:07:06,203 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 [2022-11-16 12:07:06,208 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) [2022-11-16 12:07:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-16 12:07:06,210 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-16 12:07:06,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:06,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-16 12:07:06,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:06,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-16 12:07:06,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:06,213 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-11-16 12:07:06,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 12:07:06,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2022-11-16 12:07:06,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-16 12:07:06,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-16 12:07:06,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-11-16 12:07:06,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:07:06,226 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-16 12:07:06,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-11-16 12:07:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-11-16 12:07:06,281 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) [2022-11-16 12:07:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-16 12:07:06,283 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-16 12:07:06,283 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-16 12:07:06,283 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-16 12:07:06,284 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-11-16 12:07:06,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 12:07:06,285 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:07:06,285 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:07:06,286 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:06,294 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:06,294 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(12, 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 := 10; 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 [2022-11-16 12:07:06,294 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 [2022-11-16 12:07:06,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2022-11-16 12:07:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876383108] [2022-11-16 12:07:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:06,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:06,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:07:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:07:06,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:06,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876383108] [2022-11-16 12:07:06,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876383108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:06,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:06,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:06,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098988504] [2022-11-16 12:07:06,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:06,473 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:07:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2022-11-16 12:07:06,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:06,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168599197] [2022-11-16 12:07:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:06,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:07:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:07:06,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:06,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168599197] [2022-11-16 12:07:06,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168599197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:06,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:06,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306400885] [2022-11-16 12:07:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:06,597 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 12:07:06,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:06,601 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) [2022-11-16 12:07:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:06,709 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-11-16 12:07:06,710 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-11-16 12:07:06,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 12:07:06,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-11-16 12:07:06,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-16 12:07:06,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-16 12:07:06,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-11-16 12:07:06,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:07:06,716 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-16 12:07:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-11-16 12:07:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-16 12:07:06,719 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) [2022-11-16 12:07:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-16 12:07:06,720 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-16 12:07:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:07:06,722 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-16 12:07:06,722 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-16 12:07:06,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-11-16 12:07:06,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 12:07:06,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:07:06,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:07:06,724 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:06,724 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:06,724 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(12, 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 := 10; 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 [2022-11-16 12:07:06,724 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 [2022-11-16 12:07:06,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2022-11-16 12:07:06,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:06,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156509087] [2022-11-16 12:07:06,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:06,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:07:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:06,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156509087] [2022-11-16 12:07:06,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156509087] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:06,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532162383] [2022-11-16 12:07:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:06,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:06,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:06,851 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:06,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:07:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:06,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:07:06,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:06,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:07,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532162383] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:07,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:07,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-16 12:07:07,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871407836] [2022-11-16 12:07:07,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:07,122 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:07:07,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:07,123 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2022-11-16 12:07:07,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:07,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631979964] [2022-11-16 12:07:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:07,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:07,147 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:07:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:07,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:07:07,328 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:07:07,328 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:07:07,328 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:07:07,328 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:07:07,328 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:07:07,329 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:07,329 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:07:07,329 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:07:07,329 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration3_Loop [2022-11-16 12:07:07,336 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:07:07,336 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:07:07,337 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:07,341 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:07,344 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:07,353 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:07,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:07,440 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:07:07,440 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:07:07,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:07,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:07,442 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:07,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-16 12:07:07,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:07,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:07,477 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:07:07,477 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:07:07,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:07,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:07,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:07,487 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:07,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:07,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:07,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-16 12:07:07,535 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:07:07,535 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:07:07,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:07,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:07,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:07,546 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:07,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:07,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:07,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-16 12:07:07,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:07,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:07,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:07,589 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:07,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-16 12:07:07,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:07:07,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:08,236 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:07:08,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:08,240 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:07:08,240 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:07:08,240 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:07:08,240 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:07:08,240 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:07:08,240 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:08,240 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:07:08,240 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:07:08,241 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration3_Loop [2022-11-16 12:07:08,241 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:07:08,241 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:07:08,242 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:08,246 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:08,248 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:08,267 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:08,313 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:07:08,314 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:07:08,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:08,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:08,315 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:08,329 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 [2022-11-16 12:07:08,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:08,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:08,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:08,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:08,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:08,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:08,344 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:08,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-16 12:07:08,359 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:08,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:08,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:08,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:08,369 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:08,380 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 [2022-11-16 12:07:08,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:08,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:08,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:08,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:08,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:08,394 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:08,394 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:08,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-16 12:07:08,411 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:08,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:08,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:08,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:08,421 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:08,429 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 [2022-11-16 12:07:08,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:08,443 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:08,443 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:08,443 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:08,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:08,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-16 12:07:08,445 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:08,445 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:08,463 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:07:08,483 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:07:08,484 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 12:07:08,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:08,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:08,499 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:08,540 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:07:08,540 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:07:08,540 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:07:08,540 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-16 12:07:08,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-16 12:07:08,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:08,550 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:07:08,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:08,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:07:08,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:08,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:07:08,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:08,833 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 [2022-11-16 12:07:08,833 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) [2022-11-16 12:07:09,057 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. [2022-11-16 12:07:09,057 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 [2022-11-16 12:07:09,058 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) [2022-11-16 12:07:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-16 12:07:09,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-11-16 12:07:09,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:09,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-11-16 12:07:09,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:09,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-11-16 12:07:09,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:09,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-11-16 12:07:09,067 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-16 12:07:09,071 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-11-16 12:07:09,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-11-16 12:07:09,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-11-16 12:07:09,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-11-16 12:07:09,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:07:09,073 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-11-16 12:07:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-11-16 12:07:09,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-11-16 12:07:09,083 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) [2022-11-16 12:07:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-11-16 12:07:09,085 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-11-16 12:07:09,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:07:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:07:09,086 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) [2022-11-16 12:07:09,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:09,223 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-11-16 12:07:09,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-11-16 12:07:09,228 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-16 12:07:09,231 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-11-16 12:07:09,231 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-11-16 12:07:09,232 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-11-16 12:07:09,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-11-16 12:07:09,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:07:09,233 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-11-16 12:07:09,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-11-16 12:07:09,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-11-16 12:07:09,243 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) [2022-11-16 12:07:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-11-16 12:07:09,245 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-16 12:07:09,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:07:09,246 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-16 12:07:09,246 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-16 12:07:09,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-11-16 12:07:09,248 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-16 12:07:09,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:07:09,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:07:09,250 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:09,250 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:09,250 INFO L748 eck$LassoCheckResult]: Stem: 787#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 788#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 802#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 804#fiboENTRY ~n := #in~n; 852#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 801#L13 call #t~ret4 := fibo(~n - 1);< 803#fiboENTRY ~n := #in~n; 813#L8 assume !(~n < 1); 818#L10 assume !(1 == ~n); 824#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 850#L8 assume !(~n < 1); 848#L10 assume 1 == ~n;#res := 1; 846#fiboFINAL assume true; 844#fiboEXIT >#33#return; 790#L13-1 call #t~ret5 := fibo(~n - 2);< 842#fiboENTRY ~n := #in~n; 890#L8 assume ~n < 1;#res := 0; 889#fiboFINAL assume true; 888#fiboEXIT >#35#return; 887#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 885#fiboFINAL assume true; 877#fiboEXIT >#33#return; 820#L13-1 [2022-11-16 12:07:09,250 INFO L750 eck$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 [2022-11-16 12:07:09,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:09,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 1 times [2022-11-16 12:07:09,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:09,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040423604] [2022-11-16 12:07:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:09,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:09,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:07:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:07:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:09,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:09,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:07:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:07:09,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:09,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040423604] [2022-11-16 12:07:09,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040423604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:09,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724179376] [2022-11-16 12:07:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:09,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:09,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:09,645 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:09,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:07:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:09,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:07:09,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:07:09,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:07:10,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724179376] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:10,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:10,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2022-11-16 12:07:10,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743528519] [2022-11-16 12:07:10,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:10,096 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:07:10,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:10,097 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 2 times [2022-11-16 12:07:10,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:10,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868196987] [2022-11-16 12:07:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:10,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:10,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:07:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:10,115 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:07:10,234 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:07:10,235 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:07:10,235 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:07:10,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:07:10,235 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:07:10,235 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:10,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:07:10,235 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:07:10,235 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration4_Loop [2022-11-16 12:07:10,235 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:07:10,236 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:07:10,237 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:10,241 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:10,247 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:10,249 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:10,296 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:07:10,296 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:07:10,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:10,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:10,298 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:10,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:10,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:10,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-16 12:07:10,332 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:07:10,332 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:07:10,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:10,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:10,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:10,344 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:10,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:10,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:10,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-16 12:07:10,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:10,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:10,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:10,388 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:10,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:07:10,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:10,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-16 12:07:11,090 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:07:11,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:11,094 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:07:11,094 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:07:11,094 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:07:11,094 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:07:11,094 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:07:11,094 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:11,094 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:07:11,094 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:07:11,094 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration4_Loop [2022-11-16 12:07:11,094 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:07:11,094 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:07:11,095 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:11,099 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:11,118 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:11,122 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:11,167 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:07:11,168 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:07:11,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:11,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:11,169 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:11,178 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 [2022-11-16 12:07:11,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:11,190 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:11,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:11,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:11,191 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:11,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:11,192 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:11,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-16 12:07:11,207 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:11,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:11,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:11,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:11,216 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:11,221 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 [2022-11-16 12:07:11,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-16 12:07:11,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:11,233 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:11,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:11,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:11,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:11,235 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:11,235 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:11,245 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:07:11,248 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 12:07:11,248 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:07:11,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:11,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:11,255 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:11,257 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:07:11,257 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:07:11,257 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:07:11,257 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-16 12:07:11,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-16 12:07:11,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:11,262 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:07:11,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:11,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:07:11,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:11,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:11,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:07:11,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:11,709 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 [2022-11-16 12:07:11,709 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) [2022-11-16 12:07:11,916 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. [2022-11-16 12:07:11,919 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 [2022-11-16 12:07:11,920 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) [2022-11-16 12:07:11,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-16 12:07:11,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-16 12:07:11,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:11,921 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:07:11,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:11,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:07:11,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:07:12,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:12,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:12,323 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 [2022-11-16 12:07:12,324 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) [2022-11-16 12:07:12,492 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. [2022-11-16 12:07:12,492 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 [2022-11-16 12:07:12,493 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) [2022-11-16 12:07:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-11-16 12:07:12,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-16 12:07:12,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:12,495 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:07:12,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:07:12,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:07:12,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:12,904 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 [2022-11-16 12:07:12,905 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) [2022-11-16 12:07:13,140 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. [2022-11-16 12:07:13,141 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 [2022-11-16 12:07:13,142 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) [2022-11-16 12:07:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2022-11-16 12:07:13,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-16 12:07:13,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:13,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 42 letters. Loop has 10 letters. [2022-11-16 12:07:13,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:13,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 20 letters. [2022-11-16 12:07:13,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:13,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 858 states and 1136 transitions. [2022-11-16 12:07:13,161 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-11-16 12:07:13,170 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 858 states to 430 states and 620 transitions. [2022-11-16 12:07:13,170 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 163 [2022-11-16 12:07:13,171 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2022-11-16 12:07:13,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 620 transitions. [2022-11-16 12:07:13,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:07:13,171 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 620 transitions. [2022-11-16 12:07:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 620 transitions. [2022-11-16 12:07:13,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 352. [2022-11-16 12:07:13,198 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) [2022-11-16 12:07:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2022-11-16 12:07:13,202 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 485 transitions. [2022-11-16 12:07:13,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:13,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:07:13,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:07:13,203 INFO L87 Difference]: Start difference. First operand 352 states and 485 transitions. Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:07:13,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:13,673 INFO L93 Difference]: Finished difference Result 658 states and 956 transitions. [2022-11-16 12:07:13,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 658 states and 956 transitions. [2022-11-16 12:07:13,684 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 12:07:13,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 658 states to 633 states and 920 transitions. [2022-11-16 12:07:13,695 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 276 [2022-11-16 12:07:13,696 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 279 [2022-11-16 12:07:13,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 633 states and 920 transitions. [2022-11-16 12:07:13,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:07:13,696 INFO L218 hiAutomatonCegarLoop]: Abstraction has 633 states and 920 transitions. [2022-11-16 12:07:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states and 920 transitions. [2022-11-16 12:07:13,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 600. [2022-11-16 12:07:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 367 states have (on average 1.1662125340599454) internal successors, (428), 386 states have internal predecessors, (428), 144 states have call successors, (158), 73 states have call predecessors, (158), 89 states have return successors, (293), 140 states have call predecessors, (293), 135 states have call successors, (293) [2022-11-16 12:07:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 879 transitions. [2022-11-16 12:07:13,757 INFO L240 hiAutomatonCegarLoop]: Abstraction has 600 states and 879 transitions. [2022-11-16 12:07:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:07:13,763 INFO L428 stractBuchiCegarLoop]: Abstraction has 600 states and 879 transitions. [2022-11-16 12:07:13,764 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-16 12:07:13,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 600 states and 879 transitions. [2022-11-16 12:07:13,769 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 12:07:13,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:07:13,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:07:13,772 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:13,773 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-16 12:07:13,773 INFO L748 eck$LassoCheckResult]: Stem: 4112#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(12, 2);call #Ultimate.allocInit(12, 3); 4113#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 := 10; 4129#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 4130#fiboENTRY ~n := #in~n; 4194#L8 assume !(~n < 1); 4193#L10 assume !(1 == ~n); 4189#L13 call #t~ret4 := fibo(~n - 1);< 4192#fiboENTRY ~n := #in~n; 4191#L8 assume !(~n < 1); 4190#L10 assume !(1 == ~n); 4185#L13 call #t~ret4 := fibo(~n - 1);< 4188#fiboENTRY ~n := #in~n; 4187#L8 assume !(~n < 1); 4186#L10 assume !(1 == ~n); 4181#L13 call #t~ret4 := fibo(~n - 1);< 4184#fiboENTRY ~n := #in~n; 4183#L8 assume !(~n < 1); 4182#L10 assume !(1 == ~n); 4162#L13 call #t~ret4 := fibo(~n - 1);< 4180#fiboENTRY ~n := #in~n; 4179#L8 assume !(~n < 1); 4178#L10 assume !(1 == ~n); 4175#L13 call #t~ret4 := fibo(~n - 1);< 4177#fiboENTRY ~n := #in~n; 4176#L8 assume !(~n < 1); 4174#L10 assume !(1 == ~n); 4171#L13 call #t~ret4 := fibo(~n - 1);< 4169#fiboENTRY ~n := #in~n; 4172#L8 assume !(~n < 1); 4310#L10 assume !(1 == ~n); 4170#L13 call #t~ret4 := fibo(~n - 1);< 4169#fiboENTRY ~n := #in~n; 4173#L8 assume !(~n < 1); 4626#L10 assume 1 == ~n;#res := 1; 4625#fiboFINAL assume true; 4389#fiboEXIT >#33#return; 4297#L13-1 call #t~ret5 := fibo(~n - 2);< 4299#fiboENTRY ~n := #in~n; 4602#L8 assume !(~n < 1); 4378#L10 assume !(1 == ~n); 4379#L13 call #t~ret4 := fibo(~n - 1);< 4505#fiboENTRY ~n := #in~n; 4518#L8 assume !(~n < 1); 4507#L10 assume !(1 == ~n); 4508#L13 call #t~ret4 := fibo(~n - 1);< 4525#fiboENTRY [2022-11-16 12:07:13,773 INFO L750 eck$LassoCheckResult]: Loop: 4525#fiboENTRY ~n := #in~n; 4534#L8 assume !(~n < 1); 4530#L10 assume !(1 == ~n); 4520#L13 call #t~ret4 := fibo(~n - 1);< 4525#fiboENTRY [2022-11-16 12:07:13,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1242269160, now seen corresponding path program 1 times [2022-11-16 12:07:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:13,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517228306] [2022-11-16 12:07:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:13,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:07:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:07:14,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:14,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517228306] [2022-11-16 12:07:14,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517228306] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:14,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876312097] [2022-11-16 12:07:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:14,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:14,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:14,131 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:14,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 12:07:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:07:14,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:07:14,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:07:14,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876312097] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:14,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:14,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 24 [2022-11-16 12:07:14,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312221397] [2022-11-16 12:07:14,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:14,571 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:07:14,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:14,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 2 times [2022-11-16 12:07:14,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:14,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631058510] [2022-11-16 12:07:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:14,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:14,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:07:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:14,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:07:14,614 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:07:14,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:07:14,614 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:07:14,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:07:14,614 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:07:14,614 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:14,614 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:07:14,615 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:07:14,615 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration5_Loop [2022-11-16 12:07:14,615 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:07:14,615 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:07:14,615 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:14,618 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:14,620 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:14,622 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:14,629 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:14,666 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:07:14,666 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:07:14,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:14,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:14,668 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:14,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:14,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:14,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-16 12:07:14,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:07:14,710 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:07:14,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:14,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:14,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:14,720 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:14,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:14,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:14,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-16 12:07:14,767 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:07:14,767 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:07:14,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:14,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:14,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:14,772 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:14,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:14,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:14,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-16 12:07:14,815 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:07:14,815 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:07:14,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:14,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:14,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:14,825 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:14,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:14,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:14,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-16 12:07:14,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:14,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:14,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:14,857 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:14,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:07:14,861 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:14,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-16 12:07:14,951 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:07:14,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:14,960 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:07:14,960 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:07:14,960 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:07:14,960 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:07:14,960 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:07:14,960 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:14,960 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:07:14,960 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:07:14,960 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration5_Loop [2022-11-16 12:07:14,960 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:07:14,961 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:07:14,961 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:14,964 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:14,968 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:14,970 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:14,973 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:15,017 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:07:15,017 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:07:15,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:15,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:15,019 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:15,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:07:15,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:15,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:15,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:15,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:15,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:15,037 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:15,037 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:15,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-16 12:07:15,050 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:15,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:15,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:15,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:15,060 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:15,064 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 [2022-11-16 12:07:15,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:15,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:15,077 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:15,077 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:15,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:15,077 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:15,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:15,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-16 12:07:15,095 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:15,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:15,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:15,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:15,104 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:15,108 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 [2022-11-16 12:07:15,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:15,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:15,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:15,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:15,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:15,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:15,122 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:15,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-16 12:07:15,131 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:15,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:15,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:15,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:15,136 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:15,143 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 [2022-11-16 12:07:15,156 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:15,156 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:15,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:15,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:15,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:15,157 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:15,157 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:15,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-16 12:07:15,167 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:15,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:15,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:15,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:15,176 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:15,180 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:07:15,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:15,192 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:15,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:15,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:15,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:15,193 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:15,194 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:15,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-16 12:07:15,207 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:07:15,210 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:07:15,210 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 12:07:15,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:15,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:15,214 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:15,216 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:07:15,217 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:07:15,217 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:07:15,217 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-16 12:07:15,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-16 12:07:15,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:15,226 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:07:15,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:15,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:15,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:07:15,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:15,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:15,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:15,497 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 [2022-11-16 12:07:15,497 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:15,577 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 622 states and 901 transitions. Complement of second has 13 states. [2022-11-16 12:07:15,577 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 [2022-11-16 12:07:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-16 12:07:15,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-16 12:07:15,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:15,579 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:07:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:15,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:07:15,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:15,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:15,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:15,791 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 [2022-11-16 12:07:15,791 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:15,866 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 622 states and 901 transitions. Complement of second has 13 states. [2022-11-16 12:07:15,867 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 [2022-11-16 12:07:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-16 12:07:15,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-16 12:07:15,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:15,868 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:07:15,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:15,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:07:15,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:16,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:16,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:16,099 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 [2022-11-16 12:07:16,099 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:16,195 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 811 states and 1113 transitions. Complement of second has 14 states. [2022-11-16 12:07:16,195 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 [2022-11-16 12:07:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-11-16 12:07:16,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-16 12:07:16,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:16,199 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2022-11-16 12:07:16,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:16,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2022-11-16 12:07:16,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:16,203 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 811 states and 1113 transitions. [2022-11-16 12:07:16,214 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 12:07:16,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 811 states to 662 states and 952 transitions. [2022-11-16 12:07:16,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 235 [2022-11-16 12:07:16,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 244 [2022-11-16 12:07:16,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 662 states and 952 transitions. [2022-11-16 12:07:16,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:07:16,226 INFO L218 hiAutomatonCegarLoop]: Abstraction has 662 states and 952 transitions. [2022-11-16 12:07:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states and 952 transitions. [2022-11-16 12:07:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 632. [2022-11-16 12:07:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 394 states have (on average 1.1548223350253808) internal successors, (455), 418 states have internal predecessors, (455), 144 states have call successors, (158), 73 states have call predecessors, (158), 94 states have return successors, (303), 140 states have call predecessors, (303), 135 states have call successors, (303) [2022-11-16 12:07:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 916 transitions. [2022-11-16 12:07:16,282 INFO L240 hiAutomatonCegarLoop]: Abstraction has 632 states and 916 transitions. [2022-11-16 12:07:16,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:16,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:07:16,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:07:16,284 INFO L87 Difference]: Start difference. First operand 632 states and 916 transitions. Second operand has 24 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 16 states have internal predecessors, (40), 11 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:07:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:16,716 INFO L93 Difference]: Finished difference Result 901 states and 1327 transitions. [2022-11-16 12:07:16,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 901 states and 1327 transitions. [2022-11-16 12:07:16,729 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 12:07:16,740 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 901 states to 858 states and 1265 transitions. [2022-11-16 12:07:16,741 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 300 [2022-11-16 12:07:16,741 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 306 [2022-11-16 12:07:16,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 858 states and 1265 transitions. [2022-11-16 12:07:16,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:07:16,742 INFO L218 hiAutomatonCegarLoop]: Abstraction has 858 states and 1265 transitions. [2022-11-16 12:07:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states and 1265 transitions. [2022-11-16 12:07:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 789. [2022-11-16 12:07:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 491 states have (on average 1.1344195519348268) internal successors, (557), 520 states have internal predecessors, (557), 190 states have call successors, (206), 98 states have call predecessors, (206), 108 states have return successors, (366), 170 states have call predecessors, (366), 178 states have call successors, (366) [2022-11-16 12:07:16,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1129 transitions. [2022-11-16 12:07:16,768 INFO L240 hiAutomatonCegarLoop]: Abstraction has 789 states and 1129 transitions. [2022-11-16 12:07:16,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:07:16,771 INFO L428 stractBuchiCegarLoop]: Abstraction has 789 states and 1129 transitions. [2022-11-16 12:07:16,771 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-16 12:07:16,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 789 states and 1129 transitions. [2022-11-16 12:07:16,778 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 12:07:16,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:07:16,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:07:16,781 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [13, 13, 12, 11, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:16,782 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-16 12:07:16,782 INFO L748 eck$LassoCheckResult]: Stem: 9124#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(12, 2);call #Ultimate.allocInit(12, 3); 9125#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 := 10; 9141#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 9142#fiboENTRY ~n := #in~n; 9347#L8 assume !(~n < 1); 9339#L10 assume !(1 == ~n); 9336#L13 call #t~ret4 := fibo(~n - 1);< 9337#fiboENTRY ~n := #in~n; 9382#L8 assume !(~n < 1); 9380#L10 assume !(1 == ~n); 9324#L13 call #t~ret4 := fibo(~n - 1);< 9376#fiboENTRY ~n := #in~n; 9669#L8 assume !(~n < 1); 9659#L10 assume !(1 == ~n); 9369#L13 call #t~ret4 := fibo(~n - 1);< 9445#fiboENTRY ~n := #in~n; 9463#L8 assume !(~n < 1); 9461#L10 assume !(1 == ~n); 9453#L13 call #t~ret4 := fibo(~n - 1);< 9454#fiboENTRY ~n := #in~n; 9526#L8 assume !(~n < 1); 9524#L10 assume !(1 == ~n); 9449#L13 call #t~ret4 := fibo(~n - 1);< 9522#fiboENTRY ~n := #in~n; 9602#L8 assume !(~n < 1); 9598#L10 assume !(1 == ~n); 9167#L13 call #t~ret4 := fibo(~n - 1);< 9590#fiboENTRY ~n := #in~n; 9629#L8 assume !(~n < 1); 9628#L10 assume !(1 == ~n); 9594#L13 call #t~ret4 := fibo(~n - 1);< 9627#fiboENTRY ~n := #in~n; 9676#L8 assume !(~n < 1); 9675#L10 assume !(1 == ~n); 9636#L13 call #t~ret4 := fibo(~n - 1);< 9640#fiboENTRY ~n := #in~n; 9667#L8 assume !(~n < 1); 9666#L10 assume !(1 == ~n); 9637#L13 call #t~ret4 := fibo(~n - 1);< 9640#fiboENTRY ~n := #in~n; 9668#L8 assume !(~n < 1); 9721#L10 assume 1 == ~n;#res := 1; 9719#fiboFINAL assume true; 9711#fiboEXIT >#33#return; 9705#L13-1 call #t~ret5 := fibo(~n - 2);< 9708#fiboENTRY ~n := #in~n; 9778#L8 assume !(~n < 1); 9741#L10 assume !(1 == ~n); 9162#L13 call #t~ret4 := fibo(~n - 1);< 9173#fiboENTRY ~n := #in~n; 9174#L8 assume !(~n < 1); 9849#L10 assume !(1 == ~n); 9178#L13 call #t~ret4 := fibo(~n - 1);< 9175#fiboENTRY ~n := #in~n; 9180#L8 assume !(~n < 1); 9845#L10 assume !(1 == ~n); 9177#L13 [2022-11-16 12:07:16,782 INFO L750 eck$LassoCheckResult]: Loop: 9177#L13 call #t~ret4 := fibo(~n - 1);< 9175#fiboENTRY ~n := #in~n; 9180#L8 assume !(~n < 1); 9845#L10 assume !(1 == ~n); 9177#L13 [2022-11-16 12:07:16,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:16,783 INFO L85 PathProgramCache]: Analyzing trace with hash -486527177, now seen corresponding path program 2 times [2022-11-16 12:07:16,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:16,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739851121] [2022-11-16 12:07:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:16,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 12:07:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:07:17,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:17,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739851121] [2022-11-16 12:07:17,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739851121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:17,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563258114] [2022-11-16 12:07:17,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:07:17,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:17,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:17,176 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:17,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-16 12:07:17,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:07:17,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:07:17,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:07:17,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:07:17,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:07:17,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563258114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:17,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:17,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 23 [2022-11-16 12:07:17,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344695495] [2022-11-16 12:07:17,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:17,667 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:07:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1893846, now seen corresponding path program 3 times [2022-11-16 12:07:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:17,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768935492] [2022-11-16 12:07:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:17,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:17,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:07:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:17,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:07:17,733 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:07:17,733 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:07:17,734 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:07:17,734 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:07:17,734 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:07:17,734 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:17,734 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:07:17,734 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:07:17,734 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration6_Loop [2022-11-16 12:07:17,734 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:07:17,734 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:07:17,735 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:17,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:17,745 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:17,748 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:17,793 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:07:17,794 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:07:17,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:17,799 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:17,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-16 12:07:17,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:17,803 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:17,831 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:07:17,831 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:07:17,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:17,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:17,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:17,838 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:17,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:07:17,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:17,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-16 12:07:17,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:17,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:17,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:17,881 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:17,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:07:17,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:07:17,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-16 12:07:18,653 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:07:18,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:18,657 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:07:18,657 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:07:18,657 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:07:18,657 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:07:18,657 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:07:18,657 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:18,657 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:07:18,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:07:18,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration6_Loop [2022-11-16 12:07:18,658 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:07:18,658 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:07:18,658 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:18,661 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:18,663 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:18,666 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:07:18,735 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:07:18,735 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:07:18,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:18,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:18,737 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:18,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-16 12:07:18,740 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 [2022-11-16 12:07:18,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:18,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:18,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:18,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:18,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:18,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:18,751 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:18,753 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:18,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:18,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:18,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:18,757 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:18,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-16 12:07:18,759 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 [2022-11-16 12:07:18,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:18,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:18,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:18,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:18,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:18,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:18,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:18,771 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:18,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:18,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:18,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:18,779 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:18,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-16 12:07:18,782 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 [2022-11-16 12:07:18,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:18,792 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:18,793 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:18,793 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:18,793 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:18,793 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:18,793 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:18,795 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:07:18,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-11-16 12:07:18,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:18,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:18,798 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:18,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-16 12:07:18,805 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 [2022-11-16 12:07:18,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:07:18,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:07:18,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:07:18,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:07:18,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:07:18,820 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:07:18,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:07:18,823 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:07:18,825 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 12:07:18,825 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:07:18,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:07:18,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:18,829 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:18,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-16 12:07:18,831 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:07:18,831 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:07:18,831 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:07:18,831 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-16 12:07:18,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2022-11-16 12:07:18,835 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:07:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:18,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:07:18,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:19,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:19,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:19,170 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-16 12:07:19,170 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:19,240 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 816 states and 1157 transitions. Complement of second has 18 states. [2022-11-16 12:07:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-16 12:07:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2022-11-16 12:07:19,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 56 letters. Loop has 4 letters. [2022-11-16 12:07:19,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:19,242 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:07:19,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:19,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:07:19,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:19,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:19,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:19,512 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-16 12:07:19,512 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:19,614 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 1046 states and 1479 transitions. Complement of second has 22 states. [2022-11-16 12:07:19,615 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 [2022-11-16 12:07:19,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2022-11-16 12:07:19,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 4 letters. [2022-11-16 12:07:19,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:19,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 60 letters. Loop has 4 letters. [2022-11-16 12:07:19,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:19,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 8 letters. [2022-11-16 12:07:19,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:07:19,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1046 states and 1479 transitions. [2022-11-16 12:07:19,630 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 12:07:19,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1046 states to 967 states and 1395 transitions. [2022-11-16 12:07:19,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:19,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 306 [2022-11-16 12:07:19,675 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 334 [2022-11-16 12:07:19,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 967 states and 1395 transitions. [2022-11-16 12:07:19,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:07:19,680 INFO L218 hiAutomatonCegarLoop]: Abstraction has 967 states and 1395 transitions. [2022-11-16 12:07:19,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states and 1395 transitions. [2022-11-16 12:07:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 954. [2022-11-16 12:07:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 601 states have (on average 1.1231281198003327) internal successors, (675), 638 states have internal predecessors, (675), 223 states have call successors, (257), 125 states have call predecessors, (257), 130 states have return successors, (446), 190 states have call predecessors, (446), 211 states have call successors, (446) [2022-11-16 12:07:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1378 transitions. [2022-11-16 12:07:19,718 INFO L240 hiAutomatonCegarLoop]: Abstraction has 954 states and 1378 transitions. [2022-11-16 12:07:19,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:19,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:07:19,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:07:19,720 INFO L87 Difference]: Start difference. First operand 954 states and 1378 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 13 states have internal predecessors, (38), 11 states have call successors, (12), 12 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:07:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:20,172 INFO L93 Difference]: Finished difference Result 554 states and 654 transitions. [2022-11-16 12:07:20,172 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 554 states and 654 transitions. [2022-11-16 12:07:20,178 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 12:07:20,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 554 states to 0 states and 0 transitions. [2022-11-16 12:07:20,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-16 12:07:20,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-16 12:07:20,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-16 12:07:20,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:20,179 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:07:20,179 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:07:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:07:20,180 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:07:20,181 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-16 12:07:20,181 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:07:20,181 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 12:07:20,181 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-16 12:07:20,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 12:07:20 BoogieIcfgContainer [2022-11-16 12:07:20,189 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 12:07:20,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:07:20,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:07:20,191 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:07:20,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:04" (3/4) ... [2022-11-16 12:07:20,195 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:07:20,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:07:20,196 INFO L158 Benchmark]: Toolchain (without parser) took 16133.60ms. Allocated memory was 109.1MB in the beginning and 218.1MB in the end (delta: 109.1MB). Free memory was 69.3MB in the beginning and 146.8MB in the end (delta: -77.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-16 12:07:20,196 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:07:20,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.09ms. Allocated memory is still 109.1MB. Free memory was 69.1MB in the beginning and 85.9MB in the end (delta: -16.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:07:20,198 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.95ms. Allocated memory is still 109.1MB. Free memory was 85.9MB in the beginning and 84.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:07:20,198 INFO L158 Benchmark]: Boogie Preprocessor took 15.92ms. Allocated memory is still 109.1MB. Free memory was 84.5MB in the beginning and 83.6MB in the end (delta: 947.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:07:20,198 INFO L158 Benchmark]: RCFGBuilder took 301.13ms. Allocated memory is still 109.1MB. Free memory was 83.3MB in the beginning and 74.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:07:20,199 INFO L158 Benchmark]: BuchiAutomizer took 15483.64ms. Allocated memory was 109.1MB in the beginning and 218.1MB in the end (delta: 109.1MB). Free memory was 74.0MB in the beginning and 146.8MB in the end (delta: -72.8MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2022-11-16 12:07:20,199 INFO L158 Benchmark]: Witness Printer took 4.82ms. Allocated memory is still 218.1MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:07:20,203 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 109.1MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.09ms. Allocated memory is still 109.1MB. Free memory was 69.1MB in the beginning and 85.9MB in the end (delta: -16.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.95ms. Allocated memory is still 109.1MB. Free memory was 85.9MB in the beginning and 84.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.92ms. Allocated memory is still 109.1MB. Free memory was 84.5MB in the beginning and 83.6MB in the end (delta: 947.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 301.13ms. Allocated memory is still 109.1MB. Free memory was 83.3MB in the beginning and 74.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 15483.64ms. Allocated memory was 109.1MB in the beginning and 218.1MB in the end (delta: 109.1MB). Free memory was 74.0MB in the beginning and 146.8MB in the end (delta: -72.8MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * Witness Printer took 4.82ms. Allocated memory is still 218.1MB. Free memory is still 146.8MB. 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 10 terminating modules (5 trivial, 3 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 deterministic module has affine ranking function n and consists of 7 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. 5 modules have a trivial ranking function, the largest among these consists of 24 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.4s and 7 iterations. TraceHistogramMax:13. Analysis of lassos took 8.7s. Construction of modules took 1.2s. Büchi inclusion checks took 4.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 254 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 664 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 639 mSDsluCounter, 606 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 389 mSDsCounter, 525 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1471 IncrementalHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 525 mSolverCounterUnsat, 217 mSDtfsCounter, 1471 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp81 dnf100 smp100 tf110 neg96 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-16 12:07:20,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:20,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:20,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-16 12:07:20,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:21,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a800478b-2187-4c0a-b75a-2d01eb73a33e/bin/uautomizer-tPACEb0tL8/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