./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7241ade69e14c61e98aa837796de568ecf31fbd07f5084e15c262d93cdb3376 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:44:10,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:44:10,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:44:10,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:44:10,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:44:10,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:44:10,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:44:10,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:44:10,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:44:10,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:44:10,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:44:10,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:44:10,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:44:10,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:44:10,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:44:10,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:44:10,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:44:10,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:44:10,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:44:10,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:44:10,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:44:10,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:44:10,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:44:10,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:44:10,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:44:10,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:44:10,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:44:10,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:44:10,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:44:10,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:44:10,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:44:10,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:44:10,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:44:10,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:44:10,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:44:10,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:44:10,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:44:10,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:44:10,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:44:10,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:44:10,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:44:10,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-16 12:44:10,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:44:10,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:44:10,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:44:10,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:44:10,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:44:10,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:44:10,496 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:44:10,496 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 12:44:10,496 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 12:44:10,497 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 12:44:10,497 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 12:44:10,498 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 12:44:10,498 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 12:44:10,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:44:10,498 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:44:10,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:44:10,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:44:10,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:44:10,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:44:10,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 12:44:10,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 12:44:10,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 12:44:10,500 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:44:10,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:44:10,501 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 12:44:10,501 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:44:10,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 12:44:10,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:44:10,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:44:10,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:44:10,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:44:10,503 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 12:44:10,503 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_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7241ade69e14c61e98aa837796de568ecf31fbd07f5084e15c262d93cdb3376 [2022-11-16 12:44:10,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:44:10,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:44:10,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:44:10,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:44:10,854 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:44:10,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/recursive/McCarthy91-1.c [2022-11-16 12:44:10,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/data/35ceb730b/a76608cb101743d880abd27b4755b893/FLAG5265212e8 [2022-11-16 12:44:11,444 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:44:11,444 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/sv-benchmarks/c/recursive/McCarthy91-1.c [2022-11-16 12:44:11,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/data/35ceb730b/a76608cb101743d880abd27b4755b893/FLAG5265212e8 [2022-11-16 12:44:11,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/data/35ceb730b/a76608cb101743d880abd27b4755b893 [2022-11-16 12:44:11,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:44:11,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:44:11,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:44:11,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:44:11,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:44:11,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:11" (1/1) ... [2022-11-16 12:44:11,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f88d059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:11, skipping insertion in model container [2022-11-16 12:44:11,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:11" (1/1) ... [2022-11-16 12:44:11,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:44:11,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:44:12,084 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/sv-benchmarks/c/recursive/McCarthy91-1.c[749,762] [2022-11-16 12:44:12,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:44:12,096 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:44:12,115 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/sv-benchmarks/c/recursive/McCarthy91-1.c[749,762] [2022-11-16 12:44:12,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:44:12,136 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:44:12,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12 WrapperNode [2022-11-16 12:44:12,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:44:12,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:44:12,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:44:12,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:44:12,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,180 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-16 12:44:12,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:44:12,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:44:12,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:44:12,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:44:12,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,209 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:44:12,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:44:12,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:44:12,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:44:12,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (1/1) ... [2022-11-16 12:44:12,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:12,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:12,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:12,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 12:44:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:44:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:44:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:44:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:44:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2022-11-16 12:44:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2022-11-16 12:44:12,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:44:12,386 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:44:12,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:44:12,581 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:44:12,581 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:44:12,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:12 BoogieIcfgContainer [2022-11-16 12:44:12,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:44:12,585 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 12:44:12,585 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 12:44:12,590 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 12:44:12,591 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:44:12,591 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 12:44:11" (1/3) ... [2022-11-16 12:44:12,592 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2df34fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:44:12, skipping insertion in model container [2022-11-16 12:44:12,592 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:44:12,593 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:12" (2/3) ... [2022-11-16 12:44:12,593 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2df34fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:44:12, skipping insertion in model container [2022-11-16 12:44:12,593 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:44:12,593 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:12" (3/3) ... [2022-11-16 12:44:12,595 INFO L332 chiAutomizerObserver]: Analyzing ICFG McCarthy91-1.c [2022-11-16 12:44:12,673 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 12:44:12,673 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 12:44:12,673 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 12:44:12,673 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 12:44:12,673 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 12:44:12,674 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 12:44:12,674 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 12:44:12,674 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 12:44:12,679 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) [2022-11-16 12:44:12,720 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-16 12:44:12,720 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:44:12,720 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:44:12,735 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 12:44:12,742 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 12:44:12,743 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 12:44:12,743 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) [2022-11-16 12:44:12,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-16 12:44:12,755 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:44:12,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:44:12,756 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 12:44:12,756 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 12:44:12,764 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 [2022-11-16 12:44:12,769 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 [2022-11-16 12:44:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:12,790 INFO L85 PathProgramCache]: Analyzing trace with hash 29877, now seen corresponding path program 1 times [2022-11-16 12:44:12,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:12,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699992208] [2022-11-16 12:44:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:12,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:12,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:12,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:12,967 INFO L85 PathProgramCache]: Analyzing trace with hash 44821, now seen corresponding path program 1 times [2022-11-16 12:44:12,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:12,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425096505] [2022-11-16 12:44:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:12,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:12,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:12,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:12,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash 890080737, now seen corresponding path program 1 times [2022-11-16 12:44:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:12,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032329371] [2022-11-16 12:44:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:13,001 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:13,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:13,120 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:44:13,121 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:44:13,121 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:44:13,121 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:44:13,121 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:44:13,121 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:13,122 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:44:13,122 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:44:13,122 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2022-11-16 12:44:13,122 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:44:13,122 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:44:13,141 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:13,153 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:13,164 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:13,168 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:13,171 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:13,220 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:44:13,220 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:44:13,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:13,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:13,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:13,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:13,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:13,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-16 12:44:13,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:44:13,268 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:44:13,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:13,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:13,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:13,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:13,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-16 12:44:13,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:13,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:13,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:13,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:13,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:13,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:13,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-16 12:44:13,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:44:13,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:13,982 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:44:13,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:13,987 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:44:13,987 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:44:13,988 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:44:13,988 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:44:13,988 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:44:13,988 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:13,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:44:13,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:44:13,989 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2022-11-16 12:44:13,989 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:44:13,989 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:44:13,991 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:13,995 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:14,004 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:14,008 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:14,012 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:14,066 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:44:14,073 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:44:14,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:14,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:14,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:14,088 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:14,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-16 12:44:14,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:14,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:14,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:14,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:14,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:14,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:14,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:14,124 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:44:14,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:14,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:14,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:14,139 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:14,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-16 12:44:14,143 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:14,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:14,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:14,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:14,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:14,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:14,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:14,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:14,190 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:44:14,196 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:44:14,197 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:44:14,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:14,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:14,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:14,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-16 12:44:14,203 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:44:14,204 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:44:14,204 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:44:14,204 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2022-11-16 12:44:14,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:14,217 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:44:14,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:14,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:44:14,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:14,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:14,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:44:14,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:14,480 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-16 12:44:14,482 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) [2022-11-16 12:44:14,591 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. [2022-11-16 12:44:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 12:44:14,599 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) [2022-11-16 12:44:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2022-11-16 12:44:14,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2022-11-16 12:44:14,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:14,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2022-11-16 12:44:14,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:14,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2022-11-16 12:44:14,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:14,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2022-11-16 12:44:14,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-16 12:44:14,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 19 states and 25 transitions. [2022-11-16 12:44:14,617 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2022-11-16 12:44:14,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2022-11-16 12:44:14,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2022-11-16 12:44:14,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:44:14,620 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-16 12:44:14,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2022-11-16 12:44:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-16 12:44:14,651 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) [2022-11-16 12:44:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-16 12:44:14,654 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-16 12:44:14,654 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-16 12:44:14,654 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-16 12:44:14,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2022-11-16 12:44:14,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-16 12:44:14,656 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:44:14,656 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:44:14,657 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:14,657 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:14,657 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 [2022-11-16 12:44:14,658 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 [2022-11-16 12:44:14,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1243034264, now seen corresponding path program 1 times [2022-11-16 12:44:14,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:14,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623594911] [2022-11-16 12:44:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:14,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:14,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:14,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 1 times [2022-11-16 12:44:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:14,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359499700] [2022-11-16 12:44:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:14,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:14,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:14,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash -291973751, now seen corresponding path program 1 times [2022-11-16 12:44:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:14,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278616104] [2022-11-16 12:44:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:14,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:14,725 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:14,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:14,951 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:44:14,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:44:14,953 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:44:14,963 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:44:14,963 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:44:14,964 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:14,964 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:44:14,964 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:44:14,964 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2022-11-16 12:44:14,964 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:44:14,965 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:44:14,966 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:14,971 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:14,974 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:15,046 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:44:15,047 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:44:15,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:15,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:15,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:15,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:15,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:15,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-16 12:44:15,085 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:44:15,085 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret5=0} Honda state: {f91_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:44:15,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:15,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:15,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:15,100 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:15,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:15,113 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:15,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-16 12:44:15,155 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:44:15,155 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:44:15,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:15,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:15,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:15,168 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:15,181 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:15,181 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:15,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-16 12:44:15,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:15,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:15,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:15,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:15,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-16 12:44:15,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:44:15,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:27,286 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2022-11-16 12:44:27,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:27,294 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:44:27,295 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:44:27,295 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:44:27,295 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:44:27,295 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:44:27,295 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:27,295 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:44:27,295 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:44:27,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2022-11-16 12:44:27,296 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:44:27,296 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:44:27,297 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:27,301 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:27,315 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:27,374 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:44:27,374 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:44:27,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:27,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:27,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:27,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-16 12:44:27,446 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:27,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:27,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:27,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:27,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:27,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:27,478 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:27,478 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:27,488 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:44:27,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:27,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:27,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:27,543 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:27,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-16 12:44:27,607 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:27,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:27,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:27,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:27,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:27,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:27,627 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:27,627 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:27,637 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:44:27,643 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:44:27,644 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:44:27,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:27,647 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:27,664 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:44:27,664 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:44:27,665 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:44:27,665 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret4) = -2*f91_#t~ret4 + 201 Supporting invariants [] [2022-11-16 12:44:27,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:27,672 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:44:27,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:27,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-16 12:44:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:27,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:44:27,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:27,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:44:27,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:28,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:28,135 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 [2022-11-16 12:44:28,135 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) [2022-11-16 12:44:28,456 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. [2022-11-16 12:44:28,457 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 [2022-11-16 12:44:28,459 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) [2022-11-16 12:44:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2022-11-16 12:44:28,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2022-11-16 12:44:28,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:28,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2022-11-16 12:44:28,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:28,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2022-11-16 12:44:28,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:28,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2022-11-16 12:44:28,482 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-16 12:44:28,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2022-11-16 12:44:28,486 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2022-11-16 12:44:28,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2022-11-16 12:44:28,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2022-11-16 12:44:28,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:44:28,488 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 62 transitions. [2022-11-16 12:44:28,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2022-11-16 12:44:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-16 12:44:28,501 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) [2022-11-16 12:44:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2022-11-16 12:44:28,506 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 51 transitions. [2022-11-16 12:44:28,506 INFO L428 stractBuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2022-11-16 12:44:28,506 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-16 12:44:28,506 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2022-11-16 12:44:28,508 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-11-16 12:44:28,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:44:28,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:44:28,509 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:28,509 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 12:44:28,509 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 [2022-11-16 12:44:28,509 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 [2022-11-16 12:44:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash -25705320, now seen corresponding path program 2 times [2022-11-16 12:44:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:28,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623200133] [2022-11-16 12:44:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:28,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:28,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:28,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash 55261, now seen corresponding path program 2 times [2022-11-16 12:44:28,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:28,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220481386] [2022-11-16 12:44:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:28,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:28,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:28,548 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:28,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:28,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1282983962, now seen corresponding path program 3 times [2022-11-16 12:44:28,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:28,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065617963] [2022-11-16 12:44:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:28,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-16 12:44:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:44:28,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:28,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065617963] [2022-11-16 12:44:28,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065617963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:28,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:28,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:44:28,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015283419] [2022-11-16 12:44:28,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:28,878 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:44:28,878 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:44:28,879 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:44:28,879 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:44:28,879 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:44:28,879 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:28,879 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:44:28,879 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:44:28,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2022-11-16 12:44:28,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:44:28,880 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:44:28,881 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:28,884 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:28,893 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:28,897 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:28,936 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:44:28,937 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:44:28,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:28,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:28,939 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:28,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:28,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:28,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-16 12:44:28,979 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:44:28,979 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret4=0} Honda state: {f91_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:44:28,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:28,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:28,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:28,991 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:29,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:29,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:29,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-16 12:44:29,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:29,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:29,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:29,059 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:29,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:44:29,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:29,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-16 12:44:41,123 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2022-11-16 12:44:41,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:41,129 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:44:41,129 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:44:41,129 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:44:41,129 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:44:41,129 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:44:41,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:41,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:44:41,130 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:44:41,130 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2022-11-16 12:44:41,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:44:41,130 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:44:41,131 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:41,144 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:41,155 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:41,158 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:41,214 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:44:41,215 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:44:41,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:41,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:41,217 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:41,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-16 12:44:41,229 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:41,243 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:41,243 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:41,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:41,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:41,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:41,247 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:41,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:41,262 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:44:41,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:41,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:41,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:41,275 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:41,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-16 12:44:41,280 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:41,294 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:41,294 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:41,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:41,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:41,295 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:41,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:41,297 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:41,314 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:44:41,319 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:44:41,319 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:44:41,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:41,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:41,323 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:41,333 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:44:41,334 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:44:41,334 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:44:41,334 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2022-11-16 12:44:41,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-16 12:44:41,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:41,346 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:44:41,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:41,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:44:41,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:41,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:44:41,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:41,533 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 12:44:41,533 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) [2022-11-16 12:44:41,627 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. [2022-11-16 12:44:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-16 12:44:41,629 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) [2022-11-16 12:44:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2022-11-16 12:44:41,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-16 12:44:41,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:41,630 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:44:41,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:41,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:44:41,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:41,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:41,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:44:41,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:41,841 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 12:44:41,842 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) [2022-11-16 12:44:41,924 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. [2022-11-16 12:44:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-16 12:44:41,925 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) [2022-11-16 12:44:41,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2022-11-16 12:44:41,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-16 12:44:41,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:41,927 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:44:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:41,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:44:41,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:42,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:44:42,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:42,103 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 12:44:42,103 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) [2022-11-16 12:44:42,210 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. [2022-11-16 12:44:42,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-16 12:44:42,214 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) [2022-11-16 12:44:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2022-11-16 12:44:42,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-16 12:44:42,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:42,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2022-11-16 12:44:42,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:42,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2022-11-16 12:44:42,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:42,217 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2022-11-16 12:44:42,223 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-16 12:44:42,231 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2022-11-16 12:44:42,231 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2022-11-16 12:44:42,231 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2022-11-16 12:44:42,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2022-11-16 12:44:42,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:44:42,232 INFO L218 hiAutomatonCegarLoop]: Abstraction has 48 states and 74 transitions. [2022-11-16 12:44:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2022-11-16 12:44:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-11-16 12:44:42,247 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) [2022-11-16 12:44:42,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2022-11-16 12:44:42,248 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 60 transitions. [2022-11-16 12:44:42,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:44:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:44:42,253 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) [2022-11-16 12:44:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:42,409 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2022-11-16 12:44:42,409 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2022-11-16 12:44:42,411 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-16 12:44:42,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2022-11-16 12:44:42,413 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2022-11-16 12:44:42,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2022-11-16 12:44:42,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2022-11-16 12:44:42,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:44:42,414 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 75 transitions. [2022-11-16 12:44:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2022-11-16 12:44:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-11-16 12:44:42,419 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) [2022-11-16 12:44:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2022-11-16 12:44:42,420 INFO L240 hiAutomatonCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-11-16 12:44:42,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:44:42,422 INFO L428 stractBuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-11-16 12:44:42,422 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-16 12:44:42,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2022-11-16 12:44:42,423 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-16 12:44:42,424 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:44:42,424 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:44:42,425 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-16 12:44:42,425 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2022-11-16 12:44:42,425 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 [2022-11-16 12:44:42,426 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 [2022-11-16 12:44:42,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1708035509, now seen corresponding path program 1 times [2022-11-16 12:44:42,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:42,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593767956] [2022-11-16 12:44:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:42,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:42,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:42,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:42,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1732488063, now seen corresponding path program 1 times [2022-11-16 12:44:42,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:42,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108977537] [2022-11-16 12:44:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:42,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:42,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:42,469 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:42,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:42,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1682902795, now seen corresponding path program 2 times [2022-11-16 12:44:42,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:42,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129812746] [2022-11-16 12:44:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:42,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:42,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-16 12:44:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:44:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:44:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 12:44:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:42,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:44:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:42,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:44:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-16 12:44:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:42,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129812746] [2022-11-16 12:44:42,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129812746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:42,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481411914] [2022-11-16 12:44:42,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:44:42,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:42,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:42,797 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:42,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:44:42,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:44:42,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:44:42,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:44:42,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-16 12:44:42,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-16 12:44:43,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481411914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:43,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:44:43,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2022-11-16 12:44:43,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276666477] [2022-11-16 12:44:43,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:43,491 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:44:43,491 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:44:43,491 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:44:43,491 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:44:43,491 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:44:43,491 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:43,491 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:44:43,491 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:44:43,491 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2022-11-16 12:44:43,492 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:44:43,492 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:44:43,492 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:43,500 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:43,503 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:43,506 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:43,508 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:43,544 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:44:43,544 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:44:43,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:43,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:43,546 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:43,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:43,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:43,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-16 12:44:43,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:43,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:43,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:43,604 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:43,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-16 12:44:43,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:44:43,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:43,816 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:44:43,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-11-16 12:44:43,823 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:44:43,823 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:44:43,823 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:44:43,823 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:44:43,823 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:44:43,823 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:43,823 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:44:43,824 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:44:43,824 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2022-11-16 12:44:43,824 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:44:43,824 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:44:43,825 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:43,844 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:43,846 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:43,849 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:43,851 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:43,880 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:44:43,881 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:44:43,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:43,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:43,882 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:43,891 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:43,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-16 12:44:43,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:43,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:43,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:43,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:43,905 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:43,909 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:43,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:43,919 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:44:43,922 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:44:43,922 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:44:43,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:43,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:43,926 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:43,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-16 12:44:43,928 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:44:43,928 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:44:43,928 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:44:43,928 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2022-11-16 12:44:43,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:43,936 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:44:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:44,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:44:44,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:44,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:44:44,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:44,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:44:44,543 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 [2022-11-16 12:44:44,543 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) [2022-11-16 12:44:45,012 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. [2022-11-16 12:44:45,016 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 [2022-11-16 12:44:45,017 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) [2022-11-16 12:44:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2022-11-16 12:44:45,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2022-11-16 12:44:45,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:45,018 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:44:45,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:45,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:44:45,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:45,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:44:45,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:45,524 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:44:45,525 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 [2022-11-16 12:44:45,525 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) [2022-11-16 12:44:45,873 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. [2022-11-16 12:44:45,874 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 [2022-11-16 12:44:45,875 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) [2022-11-16 12:44:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 34 transitions. [2022-11-16 12:44:45,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2022-11-16 12:44:45,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:45,876 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:44:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:45,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:44:45,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:46,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:44:46,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:44:46,320 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 [2022-11-16 12:44:46,320 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) [2022-11-16 12:44:47,049 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. [2022-11-16 12:44:47,053 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 [2022-11-16 12:44:47,054 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) [2022-11-16 12:44:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 49 transitions. [2022-11-16 12:44:47,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2022-11-16 12:44:47,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:47,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2022-11-16 12:44:47,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:47,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2022-11-16 12:44:47,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:47,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 325 states and 417 transitions. [2022-11-16 12:44:47,067 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2022-11-16 12:44:47,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 325 states to 169 states and 230 transitions. [2022-11-16 12:44:47,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 81 [2022-11-16 12:44:47,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2022-11-16 12:44:47,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 230 transitions. [2022-11-16 12:44:47,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:44:47,074 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 230 transitions. [2022-11-16 12:44:47,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 230 transitions. [2022-11-16 12:44:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2022-11-16 12:44:47,084 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) [2022-11-16 12:44:47,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 178 transitions. [2022-11-16 12:44:47,086 INFO L240 hiAutomatonCegarLoop]: Abstraction has 140 states and 178 transitions. [2022-11-16 12:44:47,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:47,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:44:47,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:44:47,087 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) [2022-11-16 12:44:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:47,338 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2022-11-16 12:44:47,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 163 transitions. [2022-11-16 12:44:47,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-16 12:44:47,342 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 101 states and 121 transitions. [2022-11-16 12:44:47,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2022-11-16 12:44:47,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2022-11-16 12:44:47,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 121 transitions. [2022-11-16 12:44:47,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:44:47,342 INFO L218 hiAutomatonCegarLoop]: Abstraction has 101 states and 121 transitions. [2022-11-16 12:44:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 121 transitions. [2022-11-16 12:44:47,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-11-16 12:44:47,349 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) [2022-11-16 12:44:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2022-11-16 12:44:47,350 INFO L240 hiAutomatonCegarLoop]: Abstraction has 97 states and 117 transitions. [2022-11-16 12:44:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:44:47,351 INFO L428 stractBuchiCegarLoop]: Abstraction has 97 states and 117 transitions. [2022-11-16 12:44:47,351 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-16 12:44:47,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 117 transitions. [2022-11-16 12:44:47,353 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-16 12:44:47,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:44:47,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:44:47,354 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-16 12:44:47,354 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:47,354 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 [2022-11-16 12:44:47,355 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 [2022-11-16 12:44:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1117842761, now seen corresponding path program 3 times [2022-11-16 12:44:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:47,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587550210] [2022-11-16 12:44:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:47,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:47,379 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:47,379 INFO L85 PathProgramCache]: Analyzing trace with hash -993632512, now seen corresponding path program 2 times [2022-11-16 12:44:47,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:47,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040354582] [2022-11-16 12:44:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:47,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:47,384 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:47,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1969849416, now seen corresponding path program 4 times [2022-11-16 12:44:47,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:47,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140289024] [2022-11-16 12:44:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:47,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:47,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:44:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:44:47,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:44:47,503 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:44:47,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:44:47,503 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:44:47,504 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:44:47,504 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:44:47,504 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,504 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:44:47,504 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:44:47,504 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2022-11-16 12:44:47,504 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:44:47,504 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:44:47,505 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:47,507 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:47,510 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:47,512 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:47,519 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:47,553 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:44:47,553 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:44:47,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:47,554 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:47,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:47,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:47,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-16 12:44:47,591 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:44:47,591 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret4=0} Honda state: {f91_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:44:47,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:47,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:47,600 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:47,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:47,612 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:47,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-16 12:44:47,626 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:44:47,626 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:44:47,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:47,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:47,631 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:47,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-16 12:44:47,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:47,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:47,649 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:44:47,649 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:44:47,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-11-16 12:44:47,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:47,656 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:47,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-16 12:44:47,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:44:47,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:47,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:47,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:47,677 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:47,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-16 12:44:47,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:44:47,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:44:47,727 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:44:47,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:47,736 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:44:47,736 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:44:47,736 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:44:47,736 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:44:47,736 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:44:47,736 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,736 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:44:47,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:44:47,736 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2022-11-16 12:44:47,736 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:44:47,736 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:44:47,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:47,740 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:47,742 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:47,744 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:47,752 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:44:47,779 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:44:47,779 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:44:47,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:47,781 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:47,792 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:47,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-16 12:44:47,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:47,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:47,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:47,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:47,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:47,805 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:47,805 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:47,825 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:44:47,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:47,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:47,835 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:47,845 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:47,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-16 12:44:47,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:47,858 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:47,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:47,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:47,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:47,860 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:47,860 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:47,874 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:44:47,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:47,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:47,884 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:47,888 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:47,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:47,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:47,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:47,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:47,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:47,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:47,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:47,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-16 12:44:47,908 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:44:47,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:47,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:47,912 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:47,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-16 12:44:47,916 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 12:44:47,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:44:47,926 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:44:47,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:44:47,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:44:47,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:44:47,928 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:44:47,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:44:47,930 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:44:47,933 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:44:47,933 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:44:47,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:44:47,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:47,935 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:47,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-16 12:44:47,938 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:44:47,938 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:44:47,938 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:44:47,938 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 201 Supporting invariants [] [2022-11-16 12:44:47,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-11-16 12:44:47,943 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:44:47,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:48,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:44:48,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:48,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:44:48,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:48,424 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 [2022-11-16 12:44:48,424 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) [2022-11-16 12:44:48,533 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. [2022-11-16 12:44:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 12:44:48,536 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) [2022-11-16 12:44:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2022-11-16 12:44:48,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 38 letters. Loop has 8 letters. [2022-11-16 12:44:48,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:48,537 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:44:48,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:48,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:44:48,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:48,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:48,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:44:48,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:49,010 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 [2022-11-16 12:44:49,011 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) [2022-11-16 12:44:49,259 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. [2022-11-16 12:44:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-16 12:44:49,263 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) [2022-11-16 12:44:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 20 transitions. [2022-11-16 12:44:49,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 20 transitions. Stem has 38 letters. Loop has 8 letters. [2022-11-16 12:44:49,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:49,264 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:44:49,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:49,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:44:49,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:49,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:44:49,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:49,712 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 [2022-11-16 12:44:49,712 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) [2022-11-16 12:44:49,809 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. [2022-11-16 12:44:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 12:44:49,812 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) [2022-11-16 12:44:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-11-16 12:44:49,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 38 letters. Loop has 8 letters. [2022-11-16 12:44:49,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:49,814 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:44:49,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:49,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:44:49,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:50,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:44:50,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:50,222 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 [2022-11-16 12:44:50,223 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) [2022-11-16 12:44:50,548 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. [2022-11-16 12:44:50,548 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 [2022-11-16 12:44:50,549 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) [2022-11-16 12:44:50,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 27 transitions. [2022-11-16 12:44:50,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 38 letters. Loop has 8 letters. [2022-11-16 12:44:50,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:50,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 46 letters. Loop has 8 letters. [2022-11-16 12:44:50,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:50,551 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 38 letters. Loop has 16 letters. [2022-11-16 12:44:50,551 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:44:50,552 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 209 transitions. [2022-11-16 12:44:50,554 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 12:44:50,554 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 0 states and 0 transitions. [2022-11-16 12:44:50,554 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-16 12:44:50,554 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-16 12:44:50,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-16 12:44:50,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:50,555 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:44:50,555 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:44:50,555 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:44:50,555 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-16 12:44:50,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:44:50,555 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 12:44:50,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-16 12:44:50,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 12:44:50 BoogieIcfgContainer [2022-11-16 12:44:50,563 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 12:44:50,564 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:44:50,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:44:50,564 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:44:50,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:12" (3/4) ... [2022-11-16 12:44:50,568 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:44:50,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:44:50,569 INFO L158 Benchmark]: Toolchain (without parser) took 38761.01ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 77.7MB in the beginning and 78.0MB in the end (delta: -243.8kB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-11-16 12:44:50,569 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 93.7MB in the end (delta: 127.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:44:50,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.16ms. Allocated memory is still 117.4MB. Free memory was 77.5MB in the beginning and 92.6MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:44:50,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.57ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 91.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:44:50,571 INFO L158 Benchmark]: Boogie Preprocessor took 30.67ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 90.5MB in the end (delta: 519.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:44:50,571 INFO L158 Benchmark]: RCFGBuilder took 370.93ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 81.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:44:50,572 INFO L158 Benchmark]: BuchiAutomizer took 37978.55ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 80.5MB in the beginning and 78.0MB in the end (delta: 2.6MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2022-11-16 12:44:50,572 INFO L158 Benchmark]: Witness Printer took 4.07ms. Allocated memory is still 142.6MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:44:50,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 93.7MB in the end (delta: 127.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.16ms. Allocated memory is still 117.4MB. Free memory was 77.5MB in the beginning and 92.6MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.57ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 91.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.67ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 90.5MB in the end (delta: 519.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 370.93ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 81.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 37978.55ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 80.5MB in the beginning and 78.0MB in the end (delta: 2.6MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Witness Printer took 4.07ms. Allocated memory is still 142.6MB. Free memory is still 78.0MB. 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 37.9s and 6 iterations. TraceHistogramMax:8. Analysis of lassos took 29.4s. Construction of modules took 0.8s. Büchi inclusion checks took 7.2s. 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, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 280 mSDsluCounter, 390 SdHoareTripleChecker+Invalid, 0.9s 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: 50ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 25.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-16 12:44:50,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:50,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5be3eee-2667-4626-b517-37f1a346dd35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE