./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8393723b 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_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro --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 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c --- 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-8393723 [2022-11-18 19:31:51,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:31:51,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:31:51,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:31:51,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:31:51,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:31:51,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:31:51,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:31:51,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:31:51,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:31:51,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:31:51,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:31:51,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:31:51,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:31:51,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:31:51,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:31:51,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:31:51,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:31:51,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:31:51,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:31:51,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:31:51,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:31:51,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:31:51,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:31:51,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:31:51,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:31:51,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:31:51,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:31:51,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:31:51,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:31:51,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:31:51,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:31:51,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:31:51,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:31:51,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:31:51,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:31:51,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:31:51,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:31:51,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:31:51,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:31:51,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:31:51,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-18 19:31:51,697 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:31:51,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:31:51,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:31:51,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:31:51,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:31:51,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:31:51,700 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:31:51,700 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 19:31:51,701 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 19:31:51,701 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 19:31:51,701 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 19:31:51,701 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 19:31:51,702 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 19:31:51,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:31:51,702 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:31:51,703 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:31:51,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:31:51,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:31:51,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:31:51,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 19:31:51,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 19:31:51,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 19:31:51,704 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:31:51,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:31:51,705 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 19:31:51,705 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:31:51,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 19:31:51,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:31:51,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:31:51,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:31:51,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:31:51,708 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 19:31:51,708 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_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c [2022-11-18 19:31:52,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:31:52,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:31:52,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:31:52,112 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:31:52,114 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:31:52,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/recursive/McCarthy91-2.c [2022-11-18 19:31:52,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/data/264752c50/18135de0e395401eb36e8181d6ebb836/FLAGcdf59bd3c [2022-11-18 19:31:52,861 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:31:52,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/sv-benchmarks/c/recursive/McCarthy91-2.c [2022-11-18 19:31:52,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/data/264752c50/18135de0e395401eb36e8181d6ebb836/FLAGcdf59bd3c [2022-11-18 19:31:53,223 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/data/264752c50/18135de0e395401eb36e8181d6ebb836 [2022-11-18 19:31:53,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:31:53,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:31:53,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:53,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:31:53,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:31:53,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cec1d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53, skipping insertion in model container [2022-11-18 19:31:53,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:31:53,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:31:53,499 WARN L234 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_6cd0314e-5937-45e5-a6ec-8f8f6c953046/sv-benchmarks/c/recursive/McCarthy91-2.c[749,762] [2022-11-18 19:31:53,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:53,512 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:31:53,534 WARN L234 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_6cd0314e-5937-45e5-a6ec-8f8f6c953046/sv-benchmarks/c/recursive/McCarthy91-2.c[749,762] [2022-11-18 19:31:53,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:53,557 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:31:53,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53 WrapperNode [2022-11-18 19:31:53,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:53,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:53,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:31:53,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:31:53,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,610 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-18 19:31:53,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:53,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:31:53,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:31:53,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:31:53,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:31:53,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:31:53,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:31:53,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:31:53,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:53,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:53,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:53,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 19:31:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:31:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:31:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:31:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:31:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2022-11-18 19:31:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2022-11-18 19:31:53,809 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:31:53,811 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:31:54,019 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:31:54,026 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:31:54,026 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:31:54,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:54 BoogieIcfgContainer [2022-11-18 19:31:54,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:31:54,030 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 19:31:54,030 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 19:31:54,048 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 19:31:54,049 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 19:31:54,049 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 07:31:53" (1/3) ... [2022-11-18 19:31:54,050 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@67ff55c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 07:31:54, skipping insertion in model container [2022-11-18 19:31:54,050 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 19:31:54,051 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53" (2/3) ... [2022-11-18 19:31:54,051 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@67ff55c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 07:31:54, skipping insertion in model container [2022-11-18 19:31:54,051 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 19:31:54,051 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:54" (3/3) ... [2022-11-18 19:31:54,053 INFO L332 chiAutomizerObserver]: Analyzing ICFG McCarthy91-2.c [2022-11-18 19:31:54,179 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 19:31:54,179 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 19:31:54,179 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 19:31:54,179 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 19:31:54,180 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 19:31:54,180 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 19:31:54,180 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 19:31:54,180 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 19:31:54,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-11-18 19:31:54,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-18 19:31:54,241 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:31:54,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:31:54,248 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 19:31:54,248 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 19:31:54,249 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 19:31:54,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-11-18 19:31:54,251 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-18 19:31:54,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:31:54,252 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:31:54,252 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 19:31:54,252 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 19:31:54,262 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(15, 2);call #Ultimate.allocInit(12, 3); 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 14#L28true call main_#t~ret7#1 := f91(main_~x~0#1);< 6#f91ENTRYtrue [2022-11-18 19:31:54,262 INFO L750 eck$LassoCheckResult]: Loop: 6#f91ENTRYtrue ~x := #in~x; 10#L18true assume !(~x > 100); 11#L21true call #t~ret4 := f91(11 + ~x);< 6#f91ENTRYtrue [2022-11-18 19:31:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash 29877, now seen corresponding path program 1 times [2022-11-18 19:31:54,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:54,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5714124] [2022-11-18 19:31:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:54,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:54,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:31:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:54,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:31:54,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash 44821, now seen corresponding path program 1 times [2022-11-18 19:31:54,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:54,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947158939] [2022-11-18 19:31:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:54,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:31:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:54,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:31:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash 890080737, now seen corresponding path program 1 times [2022-11-18 19:31:54,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:54,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951592285] [2022-11-18 19:31:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:54,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:54,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:31:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:54,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:31:54,584 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:31:54,585 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:31:54,585 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:31:54,585 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:31:54,586 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 19:31:54,586 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:54,586 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:31:54,586 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:31:54,587 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration1_Loop [2022-11-18 19:31:54,587 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:31:54,587 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:31:54,608 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:54,622 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:54,642 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:54,648 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:54,657 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:54,733 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:31:54,734 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 19:31:54,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:54,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:54,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:54,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:31:54,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:31:54,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-18 19:31:54,779 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:31:54,780 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:31:54,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:54,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:54,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:54,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:54,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:31:54,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:31:54,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-18 19:31:54,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:54,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:54,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:54,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:54,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 19:31:54,862 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:31:54,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-18 19:31:55,644 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 19:31:55,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:55,652 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:31:55,652 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:31:55,652 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:31:55,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:31:55,652 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 19:31:55,652 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:55,653 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:31:55,653 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:31:55,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration1_Loop [2022-11-18 19:31:55,653 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:31:55,653 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:31:55,655 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:55,666 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:55,682 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:55,686 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:55,693 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:55,755 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:31:55,760 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 19:31:55,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:55,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:55,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:55,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-18 19:31:55,783 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 [2022-11-18 19:31:55,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:31:55,799 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:31:55,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:31:55,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:31:55,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:31:55,803 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:31:55,803 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:31:55,823 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:31:55,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:55,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:55,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:55,835 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:55,850 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 [2022-11-18 19:31:55,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-18 19:31:55,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:31:55,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:31:55,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:31:55,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:31:55,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:31:55,869 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:31:55,869 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:31:55,879 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 19:31:55,884 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 19:31:55,884 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 19:31:55,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:55,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:55,895 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:55,903 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 19:31:55,903 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 19:31:55,903 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 19:31:55,904 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2022-11-18 19:31:55,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-18 19:31:55,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:55,920 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 19:31:55,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:56,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:56,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:31:56,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:56,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:31:56,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:56,164 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 [2022-11-18 19:31:56,167 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-18 19:31:56,282 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 34 states and 42 transitions. Complement of second has 12 states. [2022-11-18 19:31:56,284 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 [2022-11-18 19:31:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-18 19:31:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2022-11-18 19:31:56,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2022-11-18 19:31:56,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:31:56,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2022-11-18 19:31:56,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:31:56,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2022-11-18 19:31:56,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:31:56,296 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2022-11-18 19:31:56,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-18 19:31:56,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 19 states and 25 transitions. [2022-11-18 19:31:56,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2022-11-18 19:31:56,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2022-11-18 19:31:56,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2022-11-18 19:31:56,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 19:31:56,327 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-18 19:31:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2022-11-18 19:31:56,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-18 19:31:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-11-18 19:31:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-18 19:31:56,361 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-18 19:31:56,361 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-18 19:31:56,362 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-18 19:31:56,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2022-11-18 19:31:56,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-18 19:31:56,364 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:31:56,364 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:31:56,365 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:56,365 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:56,366 INFO L748 eck$LassoCheckResult]: Stem: 102#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(15, 2);call #Ultimate.allocInit(12, 3); 103#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 108#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 110#f91ENTRY ~x := #in~x; 113#L18 assume !(~x > 100); 105#L21 call #t~ret4 := f91(11 + ~x);< 114#f91ENTRY ~x := #in~x; 115#L18 assume ~x > 100;#res := ~x - 10; 116#f91FINAL assume true; 104#f91EXIT >#27#return; 106#L21-1 [2022-11-18 19:31:56,366 INFO L750 eck$LassoCheckResult]: Loop: 106#L21-1 call #t~ret5 := f91(#t~ret4);< 109#f91ENTRY ~x := #in~x; 118#L18 assume !(~x > 100); 107#L21 call #t~ret4 := f91(11 + ~x);< 109#f91ENTRY ~x := #in~x; 118#L18 assume ~x > 100;#res := ~x - 10; 112#f91FINAL assume true; 117#f91EXIT >#27#return; 106#L21-1 [2022-11-18 19:31:56,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1243034264, now seen corresponding path program 1 times [2022-11-18 19:31:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:56,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736258894] [2022-11-18 19:31:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:56,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:56,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:31:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:56,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:31:56,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:56,399 INFO L85 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 1 times [2022-11-18 19:31:56,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:56,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29819977] [2022-11-18 19:31:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:56,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:56,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:31:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:56,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:31:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash -291973751, now seen corresponding path program 1 times [2022-11-18 19:31:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:56,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328733940] [2022-11-18 19:31:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:56,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:31:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:56,456 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:31:56,671 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:31:56,672 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:31:56,672 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:31:56,672 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:31:56,672 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 19:31:56,672 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:56,673 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:31:56,673 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:31:56,673 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration2_Loop [2022-11-18 19:31:56,673 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:31:56,673 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:31:56,675 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:56,678 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:56,682 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:31:56,747 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:31:56,747 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 19:31:56,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:56,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:56,749 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:56,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-18 19:31:56,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:31:56,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:31:56,782 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:31:56,782 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret5=0} Honda state: {f91_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:31:56,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:56,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:56,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:56,824 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:56,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-18 19:31:56,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:31:56,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:31:56,904 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:31:56,904 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:31:56,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:56,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:56,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:56,916 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:56,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:31:56,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:31:56,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-18 19:31:57,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:57,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:31:57,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:57,010 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:57,021 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 19:31:57,021 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:31:57,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-18 19:32:09,354 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2022-11-18 19:32:09,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:09,368 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:32:09,368 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:32:09,368 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:32:09,368 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:32:09,368 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 19:32:09,368 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:09,369 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:32:09,369 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:32:09,369 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration2_Loop [2022-11-18 19:32:09,369 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:32:09,369 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:32:09,371 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:09,375 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:09,390 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:09,450 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:32:09,451 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 19:32:09,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:09,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:09,453 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:09,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-18 19:32:09,467 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 [2022-11-18 19:32:09,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:32:09,486 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:32:09,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:32:09,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:32:09,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:32:09,488 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:32:09,488 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:32:09,491 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:32:09,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:09,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:09,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:09,501 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:09,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-18 19:32:09,505 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 [2022-11-18 19:32:09,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:32:09,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:32:09,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:32:09,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:32:09,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:32:09,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:32:09,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:32:09,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 19:32:09,539 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 19:32:09,540 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 19:32:09,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:09,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:09,544 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:09,571 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 19:32:09,572 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 19:32:09,572 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 19:32:09,572 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret4) = -2*f91_#t~ret4 + 201 Supporting invariants [] [2022-11-18 19:32:09,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-18 19:32:09,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:09,578 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 19:32:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:09,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:32:09,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:09,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:32:09,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:09,873 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2022-11-18 19:32:09,874 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-11-18 19:32:10,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:10,221 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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 51 states and 73 transitions. Complement of second has 32 states. [2022-11-18 19:32:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-18 19:32:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-11-18 19:32:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2022-11-18 19:32:10,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2022-11-18 19:32:10,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:10,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2022-11-18 19:32:10,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:10,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2022-11-18 19:32:10,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:10,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2022-11-18 19:32:10,231 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-18 19:32:10,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2022-11-18 19:32:10,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2022-11-18 19:32:10,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2022-11-18 19:32:10,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2022-11-18 19:32:10,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 19:32:10,236 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 62 transitions. [2022-11-18 19:32:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2022-11-18 19:32:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-18 19:32:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-18 19:32:10,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2022-11-18 19:32:10,244 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 51 transitions. [2022-11-18 19:32:10,244 INFO L428 stractBuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2022-11-18 19:32:10,244 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-18 19:32:10,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2022-11-18 19:32:10,246 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-18 19:32:10,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:32:10,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:32:10,247 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:10,247 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 19:32:10,247 INFO L748 eck$LassoCheckResult]: Stem: 287#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(15, 2);call #Ultimate.allocInit(12, 3); 288#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 297#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 304#f91ENTRY ~x := #in~x; 321#L18 assume !(~x > 100); 298#L21 call #t~ret4 := f91(11 + ~x);< 308#f91ENTRY ~x := #in~x; 310#L18 assume ~x > 100;#res := ~x - 10; 312#f91FINAL assume true; 313#f91EXIT >#27#return; 291#L21-1 call #t~ret5 := f91(#t~ret4);< 303#f91ENTRY ~x := #in~x; 322#L18 assume !(~x > 100); 306#L21 [2022-11-18 19:32:10,248 INFO L750 eck$LassoCheckResult]: Loop: 306#L21 call #t~ret4 := f91(11 + ~x);< 305#f91ENTRY ~x := #in~x; 307#L18 assume !(~x > 100); 306#L21 [2022-11-18 19:32:10,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:10,248 INFO L85 PathProgramCache]: Analyzing trace with hash -25705320, now seen corresponding path program 2 times [2022-11-18 19:32:10,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:10,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052904776] [2022-11-18 19:32:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:10,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:10,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:32:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:10,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:32:10,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:10,272 INFO L85 PathProgramCache]: Analyzing trace with hash 55261, now seen corresponding path program 2 times [2022-11-18 19:32:10,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:10,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859735399] [2022-11-18 19:32:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:10,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:10,276 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:32:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:10,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:32:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:10,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1282983962, now seen corresponding path program 3 times [2022-11-18 19:32:10,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:10,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528697471] [2022-11-18 19:32:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:10,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:32:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:32:10,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:10,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528697471] [2022-11-18 19:32:10,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528697471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:10,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:10,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:32:10,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078840728] [2022-11-18 19:32:10,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:10,577 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:32:10,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:32:10,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:32:10,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:32:10,579 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 19:32:10,579 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:10,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:32:10,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:32:10,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration3_Loop [2022-11-18 19:32:10,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:32:10,580 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:32:10,583 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:10,585 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:10,597 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:10,600 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:10,638 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:32:10,638 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 19:32:10,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:10,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:10,640 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:10,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-18 19:32:10,658 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:32:10,658 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:32:10,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:32:10,691 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret4=0} Honda state: {f91_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:32:10,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:10,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:10,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:10,699 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:10,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-18 19:32:10,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:32:10,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:32:10,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:10,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:10,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:10,766 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:10,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-18 19:32:10,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 19:32:10,781 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:32:22,838 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2022-11-18 19:32:22,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:22,845 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:32:22,845 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:32:22,845 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:32:22,845 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:32:22,845 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 19:32:22,845 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:22,845 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:32:22,846 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:32:22,846 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration3_Loop [2022-11-18 19:32:22,846 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:32:22,846 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:32:22,847 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:22,851 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:22,862 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:22,865 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:22,913 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:32:22,914 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 19:32:22,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:22,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:22,916 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:22,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-18 19:32:22,933 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 [2022-11-18 19:32:22,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:32:22,950 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:32:22,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:32:22,950 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:32:22,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:32:22,951 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:32:22,951 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:32:22,961 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:32:22,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:22,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:22,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:22,977 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:22,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-18 19:32:22,983 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 [2022-11-18 19:32:22,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:32:22,999 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:32:22,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:32:23,000 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:32:23,000 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:32:23,002 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:32:23,002 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:32:23,027 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 19:32:23,030 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 19:32:23,030 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 19:32:23,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:23,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:23,032 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:23,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-18 19:32:23,041 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 19:32:23,041 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 19:32:23,041 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 19:32:23,042 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2022-11-18 19:32:23,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:23,048 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 19:32:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:23,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:32:23,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:23,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:32:23,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:23,263 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 [2022-11-18 19:32:23,264 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:32:23,364 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 43 states and 59 transitions. Complement of second has 13 states. [2022-11-18 19:32:23,364 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 [2022-11-18 19:32:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:32:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2022-11-18 19:32:23,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-18 19:32:23,367 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:23,368 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 19:32:23,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:23,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:32:23,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:23,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:32:23,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:23,568 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 [2022-11-18 19:32:23,569 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:32:23,662 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 43 states and 59 transitions. Complement of second has 13 states. [2022-11-18 19:32:23,663 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 [2022-11-18 19:32:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:32:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2022-11-18 19:32:23,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-18 19:32:23,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:23,667 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 19:32:23,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:23,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:32:23,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:23,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:23,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:32:23,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:23,858 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 [2022-11-18 19:32:23,858 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:32:23,942 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 71 states and 100 transitions. Complement of second has 16 states. [2022-11-18 19:32:23,943 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 [2022-11-18 19:32:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:32:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2022-11-18 19:32:23,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-18 19:32:23,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:23,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2022-11-18 19:32:23,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:23,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2022-11-18 19:32:23,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:23,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2022-11-18 19:32:23,949 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-18 19:32:23,951 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2022-11-18 19:32:23,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2022-11-18 19:32:23,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2022-11-18 19:32:23,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2022-11-18 19:32:23,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 19:32:23,953 INFO L218 hiAutomatonCegarLoop]: Abstraction has 48 states and 74 transitions. [2022-11-18 19:32:23,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2022-11-18 19:32:23,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-11-18 19:32:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 11 states have call successors, (18), 9 states have call predecessors, (18), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-18 19:32:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2022-11-18 19:32:23,960 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 60 transitions. [2022-11-18 19:32:23,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:23,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:32:23,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:32:23,965 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:32:24,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:24,129 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2022-11-18 19:32:24,129 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2022-11-18 19:32:24,132 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-18 19:32:24,135 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2022-11-18 19:32:24,135 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2022-11-18 19:32:24,135 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2022-11-18 19:32:24,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2022-11-18 19:32:24,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 19:32:24,136 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 75 transitions. [2022-11-18 19:32:24,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2022-11-18 19:32:24,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-11-18 19:32:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 37 states have internal predecessors, (37), 13 states have call successors, (18), 11 states have call predecessors, (18), 9 states have return successors, (19), 8 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-18 19:32:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2022-11-18 19:32:24,143 INFO L240 hiAutomatonCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-11-18 19:32:24,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:32:24,144 INFO L428 stractBuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-11-18 19:32:24,145 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-18 19:32:24,145 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2022-11-18 19:32:24,147 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-18 19:32:24,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:32:24,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:32:24,148 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-18 19:32:24,149 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2022-11-18 19:32:24,149 INFO L748 eck$LassoCheckResult]: Stem: 830#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(15, 2);call #Ultimate.allocInit(12, 3); 831#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 846#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 847#f91ENTRY ~x := #in~x; 872#L18 assume !(~x > 100); 864#L21 call #t~ret4 := f91(11 + ~x);< 868#f91ENTRY ~x := #in~x; 870#L18 assume !(~x > 100); 865#L21 call #t~ret4 := f91(11 + ~x);< 867#f91ENTRY ~x := #in~x; 871#L18 assume ~x > 100;#res := ~x - 10; 869#f91FINAL assume true; 866#f91EXIT >#27#return; 843#L21-1 call #t~ret5 := f91(#t~ret4);< 845#f91ENTRY ~x := #in~x; 884#L18 assume ~x > 100;#res := ~x - 10; 883#f91FINAL assume true; 881#f91EXIT >#29#return; 835#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 879#f91FINAL assume true; 878#f91EXIT >#27#return; 833#L21-1 call #t~ret5 := f91(#t~ret4);< 877#f91ENTRY [2022-11-18 19:32:24,149 INFO L750 eck$LassoCheckResult]: Loop: 877#f91ENTRY ~x := #in~x; 873#L18 assume !(~x > 100); 841#L21 call #t~ret4 := f91(11 + ~x);< 851#f91ENTRY ~x := #in~x; 852#L18 assume !(~x > 100); 840#L21 call #t~ret4 := f91(11 + ~x);< 860#f91ENTRY ~x := #in~x; 859#L18 assume ~x > 100;#res := ~x - 10; 856#f91FINAL assume true; 857#f91EXIT >#27#return; 839#L21-1 call #t~ret5 := f91(#t~ret4);< 842#f91ENTRY ~x := #in~x; 875#L18 assume ~x > 100;#res := ~x - 10; 876#f91FINAL assume true; 880#f91EXIT >#29#return; 835#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 879#f91FINAL assume true; 878#f91EXIT >#27#return; 834#L21-1 call #t~ret5 := f91(#t~ret4);< 877#f91ENTRY [2022-11-18 19:32:24,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1708035509, now seen corresponding path program 1 times [2022-11-18 19:32:24,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:24,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638229065] [2022-11-18 19:32:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:24,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:24,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:32:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:24,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:32:24,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:24,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1732488063, now seen corresponding path program 1 times [2022-11-18 19:32:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:24,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137263525] [2022-11-18 19:32:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:24,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:24,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:32:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:24,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:32:24,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:24,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1682902795, now seen corresponding path program 2 times [2022-11-18 19:32:24,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:24,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903558499] [2022-11-18 19:32:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:24,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:32:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:32:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:32:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:32:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:24,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:32:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:24,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 19:32:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 19:32:24,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:24,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903558499] [2022-11-18 19:32:24,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903558499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:24,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458259408] [2022-11-18 19:32:24,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:32:24,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:24,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:24,474 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:24,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:32:24,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:32:24,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:24,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:32:24,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 19:32:24,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 19:32:24,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458259408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:24,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:24,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2022-11-18 19:32:24,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437262122] [2022-11-18 19:32:24,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:25,275 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:32:25,276 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:32:25,276 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:32:25,276 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:32:25,276 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 19:32:25,276 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:25,276 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:32:25,276 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:32:25,276 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration4_Loop [2022-11-18 19:32:25,276 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:32:25,276 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:32:25,277 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:25,288 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:25,291 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:25,294 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:25,297 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:25,339 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:32:25,340 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 19:32:25,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:25,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:25,344 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:25,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-18 19:32:25,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:32:25,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:32:25,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:25,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:25,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:25,390 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:25,401 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 19:32:25,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:32:25,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-18 19:32:25,604 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 19:32:25,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:25,611 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:32:25,611 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:32:25,611 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:32:25,611 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:32:25,612 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 19:32:25,612 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:25,612 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:32:25,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:32:25,612 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration4_Loop [2022-11-18 19:32:25,612 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:32:25,612 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:32:25,613 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:25,628 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:25,631 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:25,636 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:25,638 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:25,691 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:32:25,691 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 19:32:25,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:25,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:25,693 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:25,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-18 19:32:25,704 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 [2022-11-18 19:32:25,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:32:25,719 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:32:25,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:32:25,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:32:25,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:32:25,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:32:25,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:32:25,739 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 19:32:25,749 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 19:32:25,749 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 19:32:25,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:25,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:25,755 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:25,760 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 19:32:25,760 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 19:32:25,760 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 19:32:25,761 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2022-11-18 19:32:25,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-18 19:32:25,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:25,767 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 19:32:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:25,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:32:25,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:26,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:32:26,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:26,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-11-18 19:32:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:32:26,467 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2022-11-18 19:32:26,467 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:32:27,100 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Result 125 states and 150 transitions. Complement of second has 47 states. [2022-11-18 19:32:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2022-11-18 19:32:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:32:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2022-11-18 19:32:27,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2022-11-18 19:32:27,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:27,103 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 19:32:27,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:27,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:32:27,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:27,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:32:27,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:32:27,700 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 9 loop predicates [2022-11-18 19:32:27,701 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:32:28,141 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Result 125 states and 150 transitions. Complement of second has 37 states. [2022-11-18 19:32:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2022-11-18 19:32:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:32:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 34 transitions. [2022-11-18 19:32:28,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2022-11-18 19:32:28,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:28,144 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 19:32:28,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:28,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:32:28,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:28,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:32:28,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:32:28,704 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 9 loop predicates [2022-11-18 19:32:28,704 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:32:29,604 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Result 325 states and 417 transitions. Complement of second has 123 states. [2022-11-18 19:32:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 2 stem states 15 non-accepting loop states 1 accepting loop states [2022-11-18 19:32:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:32:29,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 49 transitions. [2022-11-18 19:32:29,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2022-11-18 19:32:29,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:29,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2022-11-18 19:32:29,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:29,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2022-11-18 19:32:29,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:29,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 325 states and 417 transitions. [2022-11-18 19:32:29,619 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2022-11-18 19:32:29,624 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 325 states to 169 states and 230 transitions. [2022-11-18 19:32:29,625 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 81 [2022-11-18 19:32:29,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2022-11-18 19:32:29,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 230 transitions. [2022-11-18 19:32:29,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 19:32:29,626 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 230 transitions. [2022-11-18 19:32:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 230 transitions. [2022-11-18 19:32:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2022-11-18 19:32:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 86 states have (on average 1.0813953488372092) internal successors, (93), 88 states have internal predecessors, (93), 32 states have call successors, (42), 26 states have call predecessors, (42), 22 states have return successors, (43), 25 states have call predecessors, (43), 28 states have call successors, (43) [2022-11-18 19:32:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 178 transitions. [2022-11-18 19:32:29,642 INFO L240 hiAutomatonCegarLoop]: Abstraction has 140 states and 178 transitions. [2022-11-18 19:32:29,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:29,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:32:29,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:32:29,644 INFO L87 Difference]: Start difference. First operand 140 states and 178 transitions. Second operand has 17 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 10 states have internal predecessors, (24), 8 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 19:32:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:29,968 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2022-11-18 19:32:29,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 163 transitions. [2022-11-18 19:32:29,971 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-18 19:32:29,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 101 states and 121 transitions. [2022-11-18 19:32:29,973 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2022-11-18 19:32:29,973 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2022-11-18 19:32:29,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 121 transitions. [2022-11-18 19:32:29,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 19:32:29,973 INFO L218 hiAutomatonCegarLoop]: Abstraction has 101 states and 121 transitions. [2022-11-18 19:32:29,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 121 transitions. [2022-11-18 19:32:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-11-18 19:32:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 60 states have (on average 1.05) internal successors, (63), 61 states have internal predecessors, (63), 22 states have call successors, (29), 19 states have call predecessors, (29), 15 states have return successors, (25), 16 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-18 19:32:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2022-11-18 19:32:29,993 INFO L240 hiAutomatonCegarLoop]: Abstraction has 97 states and 117 transitions. [2022-11-18 19:32:29,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:32:29,994 INFO L428 stractBuchiCegarLoop]: Abstraction has 97 states and 117 transitions. [2022-11-18 19:32:29,994 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-18 19:32:29,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 117 transitions. [2022-11-18 19:32:29,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-18 19:32:29,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:32:29,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:32:29,997 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-18 19:32:29,997 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:29,998 INFO L748 eck$LassoCheckResult]: Stem: 2745#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(15, 2);call #Ultimate.allocInit(12, 3); 2746#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 2759#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 2760#f91ENTRY ~x := #in~x; 2780#L18 assume !(~x > 100); 2765#L21 call #t~ret4 := f91(11 + ~x);< 2764#f91ENTRY ~x := #in~x; 2767#L18 assume !(~x > 100); 2766#L21 call #t~ret4 := f91(11 + ~x);< 2809#f91ENTRY ~x := #in~x; 2812#L18 assume ~x > 100;#res := ~x - 10; 2811#f91FINAL assume true; 2810#f91EXIT >#27#return; 2805#L21-1 call #t~ret5 := f91(#t~ret4);< 2808#f91ENTRY ~x := #in~x; 2821#L18 assume ~x > 100;#res := ~x - 10; 2813#f91FINAL assume true; 2804#f91EXIT >#29#return; 2803#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 2801#f91FINAL assume true; 2800#f91EXIT >#27#return; 2795#L21-1 call #t~ret5 := f91(#t~ret4);< 2799#f91ENTRY ~x := #in~x; 2797#L18 assume !(~x > 100); 2755#L21 call #t~ret4 := f91(11 + ~x);< 2796#f91ENTRY ~x := #in~x; 2818#L18 assume ~x > 100;#res := ~x - 10; 2817#f91FINAL assume true; 2816#f91EXIT >#27#return; 2762#L21-1 call #t~ret5 := f91(#t~ret4);< 2761#f91ENTRY ~x := #in~x; 2763#L18 assume !(~x > 100); 2781#L21 call #t~ret4 := f91(11 + ~x);< 2782#f91ENTRY ~x := #in~x; 2839#L18 assume ~x > 100;#res := ~x - 10; 2838#f91FINAL assume true; 2834#f91EXIT >#27#return; 2771#L21-1 call #t~ret5 := f91(#t~ret4);< 2831#f91ENTRY [2022-11-18 19:32:29,998 INFO L750 eck$LassoCheckResult]: Loop: 2831#f91ENTRY ~x := #in~x; 2837#L18 assume !(~x > 100); 2835#L21 call #t~ret4 := f91(11 + ~x);< 2782#f91ENTRY ~x := #in~x; 2839#L18 assume ~x > 100;#res := ~x - 10; 2838#f91FINAL assume true; 2834#f91EXIT >#27#return; 2770#L21-1 call #t~ret5 := f91(#t~ret4);< 2831#f91ENTRY [2022-11-18 19:32:29,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1117842761, now seen corresponding path program 3 times [2022-11-18 19:32:29,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:29,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527347172] [2022-11-18 19:32:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:29,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:30,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:32:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:30,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:32:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:30,039 INFO L85 PathProgramCache]: Analyzing trace with hash -993632512, now seen corresponding path program 2 times [2022-11-18 19:32:30,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:30,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131886178] [2022-11-18 19:32:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:30,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:30,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:32:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:30,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:32:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:30,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1969849416, now seen corresponding path program 4 times [2022-11-18 19:32:30,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:30,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51148200] [2022-11-18 19:32:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:30,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:30,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:32:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:32:30,081 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:32:30,195 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:32:30,195 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:32:30,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:32:30,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:32:30,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 19:32:30,196 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,196 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:32:30,196 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:32:30,196 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration5_Loop [2022-11-18 19:32:30,196 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:32:30,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:32:30,197 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:30,204 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:30,207 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:30,210 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:30,219 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:30,251 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:32:30,251 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 19:32:30,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:30,253 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:30,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:32:30,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:32:30,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-18 19:32:30,291 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:32:30,291 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret4=0} Honda state: {f91_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:32:30,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:30,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:30,303 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:30,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:32:30,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:32:30,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-18 19:32:30,351 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:32:30,351 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:32:30,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:30,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:30,364 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:30,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:32:30,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:32:30,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-18 19:32:30,396 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:32:30,396 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:32:30,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:30,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:30,408 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:30,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:32:30,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:32:30,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-18 19:32:30,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:30,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:30,484 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:30,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 19:32:30,488 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:32:30,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-18 19:32:30,523 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 19:32:30,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:30,531 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:32:30,531 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:32:30,531 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:32:30,531 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:32:30,531 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 19:32:30,531 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,531 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:32:30,531 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:32:30,531 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration5_Loop [2022-11-18 19:32:30,531 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:32:30,531 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:32:30,532 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:30,535 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:30,538 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:30,541 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:30,551 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:32:30,583 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:32:30,583 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 19:32:30,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:30,585 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:30,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-18 19:32:30,595 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 19:32:30,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:32:30,610 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:32:30,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:32:30,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:32:30,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:32:30,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:32:30,612 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:32:30,619 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:32:30,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:30,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:30,625 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:30,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-18 19:32:30,633 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 [2022-11-18 19:32:30,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:32:30,648 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:32:30,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:32:30,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:32:30,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:32:30,650 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:32:30,650 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:32:30,675 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:32:30,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:30,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:30,686 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:30,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-18 19:32:30,689 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 [2022-11-18 19:32:30,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:32:30,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:32:30,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:32:30,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:32:30,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:32:30,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:32:30,700 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:32:30,702 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 19:32:30,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:30,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:30,707 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:30,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-18 19:32:30,711 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 [2022-11-18 19:32:30,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 19:32:30,723 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 19:32:30,723 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 19:32:30,723 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 19:32:30,723 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 19:32:30,725 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 19:32:30,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 19:32:30,727 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 19:32:30,731 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 19:32:30,731 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 19:32:30,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:32:30,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:30,733 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:30,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-18 19:32:30,736 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 19:32:30,736 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 19:32:30,736 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 19:32:30,737 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 201 Supporting invariants [] [2022-11-18 19:32:30,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-11-18 19:32:30,740 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 19:32:30,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:30,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:32:30,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:31,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:32:31,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:31,309 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2022-11-18 19:32:31,309 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:32:31,445 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Result 107 states and 127 transitions. Complement of second has 12 states. [2022-11-18 19:32:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 19:32:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:32:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2022-11-18 19:32:31,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 38 letters. Loop has 8 letters. [2022-11-18 19:32:31,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:31,448 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 19:32:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:31,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:31,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:32:31,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:31,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:32:31,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:31,999 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2022-11-18 19:32:31,999 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:32:32,302 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Result 125 states and 146 transitions. Complement of second has 24 states. [2022-11-18 19:32:32,306 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 [2022-11-18 19:32:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:32:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 20 transitions. [2022-11-18 19:32:32,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 20 transitions. Stem has 38 letters. Loop has 8 letters. [2022-11-18 19:32:32,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:32,308 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 19:32:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:32,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:32:32,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:32,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:32:32,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:32,853 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 7 loop predicates [2022-11-18 19:32:32,854 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:32:32,994 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Result 147 states and 167 transitions. Complement of second has 13 states. [2022-11-18 19:32:32,999 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 [2022-11-18 19:32:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:32:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-11-18 19:32:33,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 38 letters. Loop has 8 letters. [2022-11-18 19:32:33,004 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:33,004 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 19:32:33,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:33,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:32:33,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:33,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:32:33,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:33,558 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2022-11-18 19:32:33,559 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:32:34,005 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Result 182 states and 209 transitions. Complement of second has 48 states. [2022-11-18 19:32:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2022-11-18 19:32:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:32:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 27 transitions. [2022-11-18 19:32:34,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 38 letters. Loop has 8 letters. [2022-11-18 19:32:34,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:34,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 46 letters. Loop has 8 letters. [2022-11-18 19:32:34,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:34,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 38 letters. Loop has 16 letters. [2022-11-18 19:32:34,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 19:32:34,010 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 209 transitions. [2022-11-18 19:32:34,013 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 19:32:34,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 0 states and 0 transitions. [2022-11-18 19:32:34,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-18 19:32:34,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-18 19:32:34,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-18 19:32:34,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:34,015 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 19:32:34,015 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 19:32:34,015 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 19:32:34,015 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-18 19:32:34,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-18 19:32:34,015 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 19:32:34,016 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-18 19:32:34,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 07:32:34 BoogieIcfgContainer [2022-11-18 19:32:34,025 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 19:32:34,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:32:34,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:32:34,026 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:32:34,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:54" (3/4) ... [2022-11-18 19:32:34,030 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 19:32:34,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:32:34,031 INFO L158 Benchmark]: Toolchain (without parser) took 40801.94ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 73.4MB in the beginning and 66.1MB in the end (delta: 7.2MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-18 19:32:34,032 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 115.3MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:32:34,032 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.96ms. Allocated memory is still 115.3MB. Free memory was 73.1MB in the beginning and 90.7MB in the end (delta: -17.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 19:32:34,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.18ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 89.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:32:34,034 INFO L158 Benchmark]: Boogie Preprocessor took 22.02ms. Allocated memory is still 115.3MB. Free memory was 89.3MB in the beginning and 88.4MB in the end (delta: 963.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:32:34,034 INFO L158 Benchmark]: RCFGBuilder took 393.45ms. Allocated memory is still 115.3MB. Free memory was 88.1MB in the beginning and 78.9MB in the end (delta: 9.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 19:32:34,035 INFO L158 Benchmark]: BuchiAutomizer took 39995.60ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 78.9MB in the beginning and 66.1MB in the end (delta: 12.8MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2022-11-18 19:32:34,036 INFO L158 Benchmark]: Witness Printer took 4.85ms. Allocated memory is still 138.4MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:32:34,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 115.3MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.96ms. Allocated memory is still 115.3MB. Free memory was 73.1MB in the beginning and 90.7MB in the end (delta: -17.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.18ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 89.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.02ms. Allocated memory is still 115.3MB. Free memory was 89.3MB in the beginning and 88.4MB in the end (delta: 963.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 393.45ms. Allocated memory is still 115.3MB. Free memory was 88.1MB in the beginning and 78.9MB in the end (delta: 9.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 39995.60ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 78.9MB in the beginning and 66.1MB in the end (delta: 12.8MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * Witness Printer took 4.85ms. Allocated memory is still 138.4MB. Free memory is still 66.1MB. 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 7 terminating modules (2 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function 211 + -2 * \old(x) and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 18 locations. One nondeterministic module has affine ranking function -2 * \old(x) + 201 and consists of 11 locations. 2 modules have a trivial ranking function, the largest among these consists of 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 39.8s and 6 iterations. TraceHistogramMax:8. Analysis of lassos took 30.0s. Construction of modules took 1.1s. Büchi inclusion checks took 8.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 48 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 10/24 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 296 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 280 mSDsluCounter, 390 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 210 mSDsCounter, 216 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 915 IncrementalHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 216 mSolverCounterUnsat, 180 mSDtfsCounter, 915 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf109 neg95 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 52ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 26.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-18 19:32:34,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:34,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cd0314e-5937-45e5-a6ec-8f8f6c953046/bin/uautomizer-TMbwUNV5ro/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