./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:02:58,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:02:59,086 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 23:02:59,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:02:59,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:02:59,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:02:59,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:02:59,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:02:59,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:02:59,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:02:59,144 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:02:59,144 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 23:02:59,145 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 23:02:59,147 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 23:02:59,147 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 23:02:59,148 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 23:02:59,148 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 23:02:59,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:02:59,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 23:02:59,150 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:02:59,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:02:59,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:02:59,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:02:59,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 23:02:59,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 23:02:59,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 23:02:59,154 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:02:59,154 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:02:59,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:02:59,155 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 23:02:59,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:02:59,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:02:59,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:02:59,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:02:59,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:02:59,159 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 23:02:59,159 INFO L153 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_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c [2023-11-06 23:02:59,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:02:59,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:02:59,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:02:59,512 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:02:59,513 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:02:59,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/recursive/McCarthy91-2.c [2023-11-06 23:03:02,595 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:03:02,874 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:03:02,875 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/sv-benchmarks/c/recursive/McCarthy91-2.c [2023-11-06 23:03:02,892 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/data/b9ad8ce03/c0354134a5ab474c8d750fbb75fd27ef/FLAGefb0f0d6d [2023-11-06 23:03:02,911 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/data/b9ad8ce03/c0354134a5ab474c8d750fbb75fd27ef [2023-11-06 23:03:02,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:03:02,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:03:02,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:03:02,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:03:02,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:03:02,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:02" (1/1) ... [2023-11-06 23:03:02,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a83ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:02, skipping insertion in model container [2023-11-06 23:03:02,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:02" (1/1) ... [2023-11-06 23:03:02,956 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:03:03,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:03:03,120 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:03:03,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:03:03,147 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:03:03,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03 WrapperNode [2023-11-06 23:03:03,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:03:03,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:03:03,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:03:03,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:03:03,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,212 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,232 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2023-11-06 23:03:03,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:03:03,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:03:03,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:03:03,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:03:03,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,264 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:03:03,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:03:03,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:03:03,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:03:03,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (1/1) ... [2023-11-06 23:03:03,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:03,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:03,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:03,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 23:03:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:03:03,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:03:03,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:03:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:03:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2023-11-06 23:03:03,355 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2023-11-06 23:03:03,433 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:03:03,435 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:03:03,604 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:03:03,619 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:03:03,619 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:03:03,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:03:03 BoogieIcfgContainer [2023-11-06 23:03:03,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:03:03,623 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 23:03:03,623 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 23:03:03,627 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 23:03:03,629 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:03:03,630 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 11:03:02" (1/3) ... [2023-11-06 23:03:03,631 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@73586ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:03:03, skipping insertion in model container [2023-11-06 23:03:03,632 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:03:03,632 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:03" (2/3) ... [2023-11-06 23:03:03,633 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@73586ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:03:03, skipping insertion in model container [2023-11-06 23:03:03,634 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:03:03,634 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:03:03" (3/3) ... [2023-11-06 23:03:03,641 INFO L332 chiAutomizerObserver]: Analyzing ICFG McCarthy91-2.c [2023-11-06 23:03:03,708 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 23:03:03,708 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 23:03:03,708 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 23:03:03,709 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 23:03:03,709 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 23:03:03,710 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 23:03:03,710 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 23:03:03,710 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 23:03:03,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-11-06 23:03:03,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 23:03:03,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:03:03,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:03:03,749 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 23:03:03,749 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 23:03:03,752 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 23:03:03,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-11-06 23:03:03,755 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 23:03:03,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:03:03,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:03:03,756 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 23:03:03,757 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 23:03:03,765 INFO L748 eck$LassoCheckResult]: Stem: 15#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 14#L28true call main_#t~ret7#1 := f91(main_~x~0#1);< 12#$Ultimate##0true [2023-11-06 23:03:03,765 INFO L750 eck$LassoCheckResult]: Loop: 12#$Ultimate##0true ~x := #in~x; 8#L18true assume !(~x > 100); 10#L21true call #t~ret4 := f91(11 + ~x);< 12#$Ultimate##0true [2023-11-06 23:03:03,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:03,775 INFO L85 PathProgramCache]: Analyzing trace with hash 29879, now seen corresponding path program 1 times [2023-11-06 23:03:03,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:03,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706909173] [2023-11-06 23:03:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:03,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:03,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:03,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:03,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash 46807, now seen corresponding path program 1 times [2023-11-06 23:03:03,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:03,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34326693] [2023-11-06 23:03:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:03,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:03,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:03,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:03,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash 890142305, now seen corresponding path program 1 times [2023-11-06 23:03:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:03,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236082790] [2023-11-06 23:03:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:03,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:03,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:04,072 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:03:04,073 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:03:04,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:03:04,073 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:03:04,073 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:03:04,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:04,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:03:04,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:03:04,074 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration1_Loop [2023-11-06 23:03:04,074 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:03:04,075 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:03:04,092 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:04,103 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:04,113 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:04,117 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:04,120 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:04,167 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:03:04,168 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:03:04,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:04,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:04,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:04,186 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:03:04,187 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:04,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 23:03:04,213 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:03:04,213 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 23:03:04,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:04,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:04,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:04,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:04,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:03:04,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:04,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 23:03:04,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:04,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:04,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:04,266 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:04,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:03:04,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:04,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 23:03:04,974 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 23:03:04,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:04,980 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:03:04,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:03:04,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:03:04,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:03:04,981 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:03:04,981 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:04,981 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:03:04,981 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:03:04,981 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration1_Loop [2023-11-06 23:03:04,982 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:03:04,982 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:03:04,983 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:04,996 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:05,004 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:05,008 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:05,011 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:05,045 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:03:05,050 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:03:05,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:05,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:05,053 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:05,085 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 [2023-11-06 23:03:05,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:03:05,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:03:05,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:03:05,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:03:05,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:03:05,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 23:03:05,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:03:05,102 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:03:05,110 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:03:05,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-06 23:03:05,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:05,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:05,115 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:05,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 23:03:05,118 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 [2023-11-06 23:03:05,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:03:05,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:03:05,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:03:05,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:03:05,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:03:05,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:03:05,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:03:05,164 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:03:05,169 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:03:05,169 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 23:03:05,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:05,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:05,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:05,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 23:03:05,194 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:03:05,194 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:03:05,194 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:03:05,195 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2023-11-06 23:03:05,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-06 23:03:05,204 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:03:05,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:05,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:03:05,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:05,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:03:05,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:05,417 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 [2023-11-06 23:03:05,420 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-11-06 23:03:05,555 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 35 states and 43 transitions. Complement of second has 12 states. [2023-11-06 23:03:05,558 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 [2023-11-06 23:03:05,564 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) [2023-11-06 23:03:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2023-11-06 23:03:05,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2023-11-06 23:03:05,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:05,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2023-11-06 23:03:05,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:05,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2023-11-06 23:03:05,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:05,570 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2023-11-06 23:03:05,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 23:03:05,583 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2023-11-06 23:03:05,584 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2023-11-06 23:03:05,585 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2023-11-06 23:03:05,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2023-11-06 23:03:05,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:03:05,587 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-11-06 23:03:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2023-11-06 23:03:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-11-06 23:03:05,623 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) [2023-11-06 23:03:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-11-06 23:03:05,626 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-11-06 23:03:05,626 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-11-06 23:03:05,626 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 23:03:05,626 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2023-11-06 23:03:05,628 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 23:03:05,628 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:03:05,628 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:03:05,629 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:05,630 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:05,630 INFO L748 eck$LassoCheckResult]: Stem: 114#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 115#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 108#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 107#$Ultimate##0 ~x := #in~x; 109#L18 assume !(~x > 100); 105#L21 call #t~ret4 := f91(11 + ~x);< 110#$Ultimate##0 ~x := #in~x; 111#L18 assume ~x > 100;#res := ~x - 10; 118#f91FINAL assume true; 104#f91EXIT >#29#return; 106#L21-1 [2023-11-06 23:03:05,630 INFO L750 eck$LassoCheckResult]: Loop: 106#L21-1 call #t~ret5 := f91(#t~ret4);< 113#$Ultimate##0 ~x := #in~x; 120#L18 assume !(~x > 100); 112#L21 call #t~ret4 := f91(11 + ~x);< 113#$Ultimate##0 ~x := #in~x; 120#L18 assume ~x > 100;#res := ~x - 10; 117#f91FINAL assume true; 119#f91EXIT >#29#return; 106#L21-1 [2023-11-06 23:03:05,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:05,631 INFO L85 PathProgramCache]: Analyzing trace with hash -218206616, now seen corresponding path program 1 times [2023-11-06 23:03:05,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:05,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276934357] [2023-11-06 23:03:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:05,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:05,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:05,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:05,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 1 times [2023-11-06 23:03:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:05,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973195217] [2023-11-06 23:03:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:05,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:05,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:05,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1919740023, now seen corresponding path program 1 times [2023-11-06 23:03:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:05,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814000009] [2023-11-06 23:03:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:05,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:05,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:05,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:05,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:06,003 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:03:06,003 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:03:06,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:03:06,003 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:03:06,003 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:03:06,003 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:06,003 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:03:06,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:03:06,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration2_Loop [2023-11-06 23:03:06,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:03:06,004 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:03:06,005 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:06,008 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:06,011 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:06,062 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:03:06,062 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:03:06,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:06,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:06,063 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:06,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:03:06,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:06,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 23:03:06,097 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:03:06,097 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret5=0} Honda state: {f91_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 23:03:06,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:06,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:06,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:06,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:06,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 23:03:06,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:03:06,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:06,139 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:03:06,140 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 23:03:06,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:06,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:06,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:06,154 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:06,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 23:03:06,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:03:06,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:06,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:06,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:06,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:06,193 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:06,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 23:03:06,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:03:06,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:18,489 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2023-11-06 23:03:18,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:18,501 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:03:18,502 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:03:18,502 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:03:18,502 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:03:18,502 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:03:18,502 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:18,502 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:03:18,502 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:03:18,502 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration2_Loop [2023-11-06 23:03:18,502 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:03:18,502 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:03:18,504 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:18,514 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:18,527 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:18,585 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:03:18,585 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:03:18,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:18,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:18,588 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:18,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 23:03:18,602 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 [2023-11-06 23:03:18,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:03:18,615 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:03:18,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:03:18,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:03:18,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:03:18,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:03:18,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:03:18,626 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:03:18,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:18,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:18,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:18,638 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:18,648 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 [2023-11-06 23:03:18,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:03:18,661 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:03:18,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:03:18,661 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:03:18,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:03:18,668 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:03:18,669 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:03:18,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 23:03:18,681 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:03:18,684 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:03:18,685 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 23:03:18,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:18,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:18,689 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:18,698 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:03:18,698 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:03:18,699 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:03:18,699 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret4) = -2*f91_#t~ret4 + 201 Supporting invariants [] [2023-11-06 23:03:18,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 23:03:18,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:18,709 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:03:18,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:18,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:03:18,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:18,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 23:03:18,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:19,027 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 [2023-11-06 23:03:19,028 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) [2023-11-06 23:03:19,270 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. [2023-11-06 23:03:19,271 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 [2023-11-06 23:03:19,272 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) [2023-11-06 23:03:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2023-11-06 23:03:19,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2023-11-06 23:03:19,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:19,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2023-11-06 23:03:19,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:19,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2023-11-06 23:03:19,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:19,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2023-11-06 23:03:19,280 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2023-11-06 23:03:19,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2023-11-06 23:03:19,283 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2023-11-06 23:03:19,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2023-11-06 23:03:19,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2023-11-06 23:03:19,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:03:19,285 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 62 transitions. [2023-11-06 23:03:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2023-11-06 23:03:19,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2023-11-06 23:03:19,290 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) [2023-11-06 23:03:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2023-11-06 23:03:19,292 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 51 transitions. [2023-11-06 23:03:19,292 INFO L428 stractBuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2023-11-06 23:03:19,292 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 23:03:19,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2023-11-06 23:03:19,294 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2023-11-06 23:03:19,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:03:19,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:03:19,295 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:19,295 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 23:03:19,295 INFO L748 eck$LassoCheckResult]: Stem: 311#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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); 312#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;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 306#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 310#$Ultimate##0 ~x := #in~x; 316#L18 assume !(~x > 100); 300#L21 call #t~ret4 := f91(11 + ~x);< 299#$Ultimate##0 ~x := #in~x; 303#L18 assume ~x > 100;#res := ~x - 10; 321#f91FINAL assume true; 320#f91EXIT >#29#return; 291#L21-1 call #t~ret5 := f91(#t~ret4);< 309#$Ultimate##0 ~x := #in~x; 323#L18 assume !(~x > 100); 297#L21 [2023-11-06 23:03:19,295 INFO L750 eck$LassoCheckResult]: Loop: 297#L21 call #t~ret4 := f91(11 + ~x);< 296#$Ultimate##0 ~x := #in~x; 298#L18 assume !(~x > 100); 297#L21 [2023-11-06 23:03:19,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:19,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1987218266, now seen corresponding path program 2 times [2023-11-06 23:03:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:19,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132212735] [2023-11-06 23:03:19,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:19,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:19,308 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:19,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:19,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:19,320 INFO L85 PathProgramCache]: Analyzing trace with hash 57247, now seen corresponding path program 2 times [2023-11-06 23:03:19,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:19,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463568851] [2023-11-06 23:03:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:19,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:19,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:19,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:19,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash -609818202, now seen corresponding path program 3 times [2023-11-06 23:03:19,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:19,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222503848] [2023-11-06 23:03:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:19,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:03:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:03:19,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:19,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222503848] [2023-11-06 23:03:19,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222503848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:19,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:19,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:03:19,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294904603] [2023-11-06 23:03:19,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:19,572 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:03:19,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:03:19,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:03:19,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:03:19,572 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:03:19,572 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:19,572 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:03:19,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:03:19,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration3_Loop [2023-11-06 23:03:19,573 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:03:19,573 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:03:19,575 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:19,580 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:19,591 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:19,594 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:19,632 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:03:19,632 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:03:19,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:19,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:19,637 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:19,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 23:03:19,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:03:19,649 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:19,672 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:03:19,672 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret4=0} Honda state: {f91_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 23:03:19,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:19,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:19,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:19,686 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:19,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:03:19,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:19,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 23:03:19,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:19,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:19,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:19,746 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:19,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:03:19,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:19,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-06 23:03:19,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-06 23:03:31,956 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2023-11-06 23:03:31,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:31,964 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:03:31,964 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:03:31,964 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:03:31,964 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:03:31,965 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:03:31,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:31,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:03:31,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:03:31,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration3_Loop [2023-11-06 23:03:31,965 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:03:31,965 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:03:31,967 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:31,975 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:31,986 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:31,989 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:32,032 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:03:32,033 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:03:32,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:32,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:32,034 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:32,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-06 23:03:32,046 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 [2023-11-06 23:03:32,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:03:32,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:03:32,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:03:32,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:03:32,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:03:32,060 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:03:32,060 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:03:32,081 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:03:32,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:32,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:32,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:32,091 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:32,101 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 [2023-11-06 23:03:32,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-06 23:03:32,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:03:32,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:03:32,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:03:32,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:03:32,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:03:32,118 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:03:32,118 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:03:32,132 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:03:32,149 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:03:32,149 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 23:03:32,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:32,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:32,151 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:32,166 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:03:32,167 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:03:32,167 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:03:32,167 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2023-11-06 23:03:32,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-06 23:03:32,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:32,178 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:03:32,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:32,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:03:32,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:32,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:03:32,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:32,401 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 [2023-11-06 23:03:32,402 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) [2023-11-06 23:03:32,498 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. [2023-11-06 23:03:32,499 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 [2023-11-06 23:03:32,501 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) [2023-11-06 23:03:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2023-11-06 23:03:32,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2023-11-06 23:03:32,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:32,503 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 23:03:32,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:32,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:03:32,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:32,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:03:32,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:32,696 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 [2023-11-06 23:03:32,696 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) [2023-11-06 23:03:32,788 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. [2023-11-06 23:03:32,789 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 [2023-11-06 23:03:32,791 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) [2023-11-06 23:03:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2023-11-06 23:03:32,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2023-11-06 23:03:32,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:32,795 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 23:03:32,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:32,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:03:32,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:32,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:03:32,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:32,968 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 [2023-11-06 23:03:32,968 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) [2023-11-06 23:03:33,080 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. [2023-11-06 23:03:33,081 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 [2023-11-06 23:03:33,085 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) [2023-11-06 23:03:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2023-11-06 23:03:33,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2023-11-06 23:03:33,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:33,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2023-11-06 23:03:33,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:33,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2023-11-06 23:03:33,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:33,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2023-11-06 23:03:33,098 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-06 23:03:33,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2023-11-06 23:03:33,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2023-11-06 23:03:33,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2023-11-06 23:03:33,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2023-11-06 23:03:33,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:03:33,107 INFO L218 hiAutomatonCegarLoop]: Abstraction has 48 states and 74 transitions. [2023-11-06 23:03:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2023-11-06 23:03:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-11-06 23:03:33,115 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) [2023-11-06 23:03:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2023-11-06 23:03:33,116 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 60 transitions. [2023-11-06 23:03:33,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:33,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:03:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:03:33,121 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) [2023-11-06 23:03:33,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:33,258 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2023-11-06 23:03:33,259 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2023-11-06 23:03:33,262 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2023-11-06 23:03:33,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2023-11-06 23:03:33,266 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2023-11-06 23:03:33,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2023-11-06 23:03:33,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2023-11-06 23:03:33,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:03:33,267 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 75 transitions. [2023-11-06 23:03:33,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2023-11-06 23:03:33,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2023-11-06 23:03:33,274 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) [2023-11-06 23:03:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2023-11-06 23:03:33,276 INFO L240 hiAutomatonCegarLoop]: Abstraction has 57 states and 74 transitions. [2023-11-06 23:03:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:03:33,277 INFO L428 stractBuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2023-11-06 23:03:33,278 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 23:03:33,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2023-11-06 23:03:33,280 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2023-11-06 23:03:33,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:03:33,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:03:33,282 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 23:03:33,282 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2023-11-06 23:03:33,283 INFO L748 eck$LassoCheckResult]: Stem: 850#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 851#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 846#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 849#$Ultimate##0 ~x := #in~x; 873#L18 assume !(~x > 100); 865#L21 call #t~ret4 := f91(11 + ~x);< 869#$Ultimate##0 ~x := #in~x; 870#L18 assume !(~x > 100); 866#L21 call #t~ret4 := f91(11 + ~x);< 868#$Ultimate##0 ~x := #in~x; 872#L18 assume ~x > 100;#res := ~x - 10; 871#f91FINAL assume true; 867#f91EXIT >#29#return; 840#L21-1 call #t~ret5 := f91(#t~ret4);< 839#$Ultimate##0 ~x := #in~x; 841#L18 assume ~x > 100;#res := ~x - 10; 858#f91FINAL assume true; 886#f91EXIT >#31#return; 835#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 885#f91FINAL assume true; 884#f91EXIT >#29#return; 833#L21-1 call #t~ret5 := f91(#t~ret4);< 847#$Ultimate##0 [2023-11-06 23:03:33,283 INFO L750 eck$LassoCheckResult]: Loop: 847#$Ultimate##0 ~x := #in~x; 876#L18 assume !(~x > 100); 844#L21 call #t~ret4 := f91(11 + ~x);< 842#$Ultimate##0 ~x := #in~x; 845#L18 assume !(~x > 100); 843#L21 call #t~ret4 := f91(11 + ~x);< 861#$Ultimate##0 ~x := #in~x; 882#L18 assume ~x > 100;#res := ~x - 10; 880#f91FINAL assume true; 878#f91EXIT >#29#return; 853#L21-1 call #t~ret5 := f91(#t~ret4);< 877#$Ultimate##0 ~x := #in~x; 874#L18 assume ~x > 100;#res := ~x - 10; 875#f91FINAL assume true; 887#f91EXIT >#31#return; 835#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 885#f91FINAL assume true; 884#f91EXIT >#29#return; 834#L21-1 call #t~ret5 := f91(#t~ret4);< 847#$Ultimate##0 [2023-11-06 23:03:33,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash -834951989, now seen corresponding path program 1 times [2023-11-06 23:03:33,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:33,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883058935] [2023-11-06 23:03:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:33,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:33,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:33,312 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:33,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash -871747263, now seen corresponding path program 1 times [2023-11-06 23:03:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:33,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59003466] [2023-11-06 23:03:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:33,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:33,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:33,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:33,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash 418853943, now seen corresponding path program 2 times [2023-11-06 23:03:33,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:33,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583999562] [2023-11-06 23:03:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:33,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:03:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:03:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:33,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:03:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:33,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:03:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:33,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:03:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:03:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 23:03:33,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583999562] [2023-11-06 23:03:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583999562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292000330] [2023-11-06 23:03:33,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:03:33,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:33,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:33,638 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:33,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 23:03:33,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:03:33,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:03:33,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:03:33,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 23:03:33,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:03:33,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 23:03:34,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292000330] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:03:34,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:03:34,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2023-11-06 23:03:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994920653] [2023-11-06 23:03:34,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:03:34,353 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:03:34,353 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:03:34,353 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:03:34,353 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:03:34,353 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:03:34,353 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:34,354 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:03:34,354 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:03:34,354 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration4_Loop [2023-11-06 23:03:34,354 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:03:34,354 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:03:34,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:34,361 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:34,368 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:34,370 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:34,372 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:34,403 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:03:34,403 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:03:34,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:34,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:34,405 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:34,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:03:34,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:34,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-06 23:03:34,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:34,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:34,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:34,459 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:34,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:03:34,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:34,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-06 23:03:34,500 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 23:03:34,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:34,507 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:03:34,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:03:34,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:03:34,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:03:34,507 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:03:34,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:34,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:03:34,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:03:34,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration4_Loop [2023-11-06 23:03:34,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:03:34,508 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:03:34,509 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:34,516 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:34,519 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:34,521 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:34,524 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:34,557 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:03:34,557 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:03:34,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:34,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:34,559 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:34,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-06 23:03:34,566 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 [2023-11-06 23:03:34,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:03:34,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:03:34,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:03:34,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:03:34,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:03:34,581 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:03:34,581 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:03:34,584 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:03:34,586 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:03:34,587 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 23:03:34,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:34,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:34,590 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:34,592 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:03:34,592 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:03:34,592 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:03:34,592 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2023-11-06 23:03:34,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-06 23:03:34,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-06 23:03:34,597 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:03:34,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:34,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:03:34,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:34,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 23:03:34,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 23:03:35,197 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2023-11-06 23:03:35,197 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) [2023-11-06 23:03:35,686 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. [2023-11-06 23:03:35,689 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 [2023-11-06 23:03:35,690 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) [2023-11-06 23:03:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 34 transitions. [2023-11-06 23:03:35,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2023-11-06 23:03:35,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:35,691 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 23:03:35,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:35,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:03:35,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:35,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:36,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 23:03:36,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 23:03:36,282 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2023-11-06 23:03:36,282 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) [2023-11-06 23:03:36,751 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. [2023-11-06 23:03:36,752 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 [2023-11-06 23:03:36,753 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) [2023-11-06 23:03:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2023-11-06 23:03:36,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2023-11-06 23:03:36,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:36,754 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 23:03:36,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:36,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:03:36,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:37,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 23:03:37,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 23:03:37,284 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 10 loop predicates [2023-11-06 23:03:37,284 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) [2023-11-06 23:03:38,236 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 431 states and 531 transitions. Complement of second has 216 states. [2023-11-06 23:03:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 2 stem states 17 non-accepting loop states 1 accepting loop states [2023-11-06 23:03:38,238 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) [2023-11-06 23:03:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 49 transitions. [2023-11-06 23:03:38,239 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2023-11-06 23:03:38,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:38,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2023-11-06 23:03:38,246 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:38,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2023-11-06 23:03:38,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:38,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 531 transitions. [2023-11-06 23:03:38,269 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2023-11-06 23:03:38,278 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 203 states and 269 transitions. [2023-11-06 23:03:38,280 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2023-11-06 23:03:38,282 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-06 23:03:38,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 269 transitions. [2023-11-06 23:03:38,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:03:38,283 INFO L218 hiAutomatonCegarLoop]: Abstraction has 203 states and 269 transitions. [2023-11-06 23:03:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 269 transitions. [2023-11-06 23:03:38,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2023-11-06 23:03:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 97 states have (on average 1.092783505154639) internal successors, (106), 99 states have internal predecessors, (106), 35 states have call successors, (45), 29 states have call predecessors, (45), 25 states have return successors, (47), 28 states have call predecessors, (47), 32 states have call successors, (47) [2023-11-06 23:03:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2023-11-06 23:03:38,322 INFO L240 hiAutomatonCegarLoop]: Abstraction has 157 states and 198 transitions. [2023-11-06 23:03:38,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:38,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 23:03:38,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:03:38,324 INFO L87 Difference]: Start difference. First operand 157 states and 198 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) [2023-11-06 23:03:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:38,580 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2023-11-06 23:03:38,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 188 transitions. [2023-11-06 23:03:38,584 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-06 23:03:38,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 104 states and 123 transitions. [2023-11-06 23:03:38,587 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2023-11-06 23:03:38,587 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2023-11-06 23:03:38,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 123 transitions. [2023-11-06 23:03:38,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:03:38,588 INFO L218 hiAutomatonCegarLoop]: Abstraction has 104 states and 123 transitions. [2023-11-06 23:03:38,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 123 transitions. [2023-11-06 23:03:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2023-11-06 23:03:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 21 states have call successors, (28), 20 states have call predecessors, (28), 16 states have return successors, (25), 15 states have call predecessors, (25), 18 states have call successors, (25) [2023-11-06 23:03:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2023-11-06 23:03:38,597 INFO L240 hiAutomatonCegarLoop]: Abstraction has 100 states and 119 transitions. [2023-11-06 23:03:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:03:38,601 INFO L428 stractBuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2023-11-06 23:03:38,601 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 23:03:38,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 119 transitions. [2023-11-06 23:03:38,602 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-06 23:03:38,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:03:38,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:03:38,604 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2023-11-06 23:03:38,604 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:38,604 INFO L748 eck$LassoCheckResult]: Stem: 3009#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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); 3010#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;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 3007#L28 call main_#t~ret7#1 := f91(main_~x~0#1);< 3008#$Ultimate##0 ~x := #in~x; 3020#L18 assume !(~x > 100); 3001#L21 call #t~ret4 := f91(11 + ~x);< 2999#$Ultimate##0 ~x := #in~x; 3002#L18 assume !(~x > 100); 3000#L21 call #t~ret4 := f91(11 + ~x);< 3047#$Ultimate##0 ~x := #in~x; 3050#L18 assume ~x > 100;#res := ~x - 10; 3049#f91FINAL assume true; 3048#f91EXIT >#29#return; 3043#L21-1 call #t~ret5 := f91(#t~ret4);< 3046#$Ultimate##0 ~x := #in~x; 3062#L18 assume ~x > 100;#res := ~x - 10; 3051#f91FINAL assume true; 3042#f91EXIT >#31#return; 3041#L21-2 #res := #t~ret5;havoc #t~ret4;havoc #t~ret5; 3039#f91FINAL assume true; 3038#f91EXIT >#29#return; 3032#L21-1 call #t~ret5 := f91(#t~ret4);< 3037#$Ultimate##0 ~x := #in~x; 3035#L18 assume !(~x > 100); 3003#L21 call #t~ret4 := f91(11 + ~x);< 3021#$Ultimate##0 ~x := #in~x; 3040#L18 assume !(~x > 100); 2989#L21 call #t~ret4 := f91(11 + ~x);< 3022#$Ultimate##0 ~x := #in~x; 3087#L18 assume ~x > 100;#res := ~x - 10; 3086#f91FINAL assume true; 2988#f91EXIT >#29#return; 2990#L21-1 [2023-11-06 23:03:38,605 INFO L750 eck$LassoCheckResult]: Loop: 2990#L21-1 call #t~ret5 := f91(#t~ret4);< 3004#$Ultimate##0 ~x := #in~x; 3031#L18 assume !(~x > 100); 2997#L21 call #t~ret4 := f91(11 + ~x);< 2996#$Ultimate##0 ~x := #in~x; 2998#L18 assume ~x > 100;#res := ~x - 10; 3015#f91FINAL assume true; 3016#f91EXIT >#29#return; 2990#L21-1 [2023-11-06 23:03:38,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2083076242, now seen corresponding path program 3 times [2023-11-06 23:03:38,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:38,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512187999] [2023-11-06 23:03:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:38,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:38,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:03:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:03:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:03:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 23:03:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-06 23:03:38,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:38,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512187999] [2023-11-06 23:03:38,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512187999] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:38,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547152661] [2023-11-06 23:03:38,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:03:38,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:38,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:38,756 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:38,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 23:03:38,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 23:03:38,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:03:38,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:03:38,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 23:03:38,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:03:38,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547152661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:38,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:03:38,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2023-11-06 23:03:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473534447] [2023-11-06 23:03:38,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:38,855 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 23:03:38,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 2 times [2023-11-06 23:03:38,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:38,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312812589] [2023-11-06 23:03:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:38,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:38,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:03:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:03:38,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:03:39,028 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:03:39,028 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:03:39,028 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:03:39,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:03:39,029 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:03:39,029 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:39,029 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:03:39,029 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:03:39,029 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration5_Loop [2023-11-06 23:03:39,029 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:03:39,029 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:03:39,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:39,042 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:39,045 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:39,088 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:03:39,088 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:03:39,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:39,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:39,090 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:39,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:03:39,101 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:39,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-06 23:03:39,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:39,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:39,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:39,158 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:39,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:03:39,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:03:39,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-06 23:03:51,242 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2023-11-06 23:03:51,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:51,249 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:03:51,250 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:03:51,250 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:03:51,250 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:03:51,250 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:03:51,250 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:51,250 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:03:51,250 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:03:51,250 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration5_Loop [2023-11-06 23:03:51,250 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:03:51,250 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:03:51,251 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:51,255 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:51,267 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:03:51,304 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:03:51,304 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:03:51,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:51,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:51,306 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:51,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-06 23:03:51,316 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 [2023-11-06 23:03:51,326 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:03:51,326 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:03:51,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:03:51,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:03:51,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:03:51,327 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:03:51,327 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:03:51,346 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:03:51,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-06 23:03:51,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:51,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:51,357 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:51,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-06 23:03:51,361 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 [2023-11-06 23:03:51,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:03:51,371 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:03:51,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:03:51,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:03:51,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:03:51,373 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:03:51,373 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:03:51,377 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:03:51,380 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:03:51,380 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 23:03:51,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:03:51,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:51,383 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:51,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-06 23:03:51,384 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:03:51,384 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:03:51,385 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:03:51,385 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret4) = -2*f91_#t~ret4 + 201 Supporting invariants [] [2023-11-06 23:03:51,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-06 23:03:51,389 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:03:51,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:51,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-06 23:03:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:51,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 23:03:51,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:51,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 23:03:51,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:51,804 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 [2023-11-06 23:03:51,805 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 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, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 23:03:52,027 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 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, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 139 states and 161 transitions. Complement of second has 24 states. [2023-11-06 23:03:52,028 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 [2023-11-06 23:03:52,029 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, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 23:03:52,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2023-11-06 23:03:52,029 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2023-11-06 23:03:52,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:52,029 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 23:03:52,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:52,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 23:03:52,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:52,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 23:03:52,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:52,499 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 [2023-11-06 23:03:52,500 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 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, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 23:03:52,730 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 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, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 139 states and 161 transitions. Complement of second has 24 states. [2023-11-06 23:03:52,732 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 [2023-11-06 23:03:52,732 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, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 23:03:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2023-11-06 23:03:52,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2023-11-06 23:03:52,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:52,733 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 23:03:52,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:52,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 23:03:52,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:53,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 23:03:53,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:53,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:53,193 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 [2023-11-06 23:03:53,194 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 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, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 23:03:53,425 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 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, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 181 states and 211 transitions. Complement of second has 27 states. [2023-11-06 23:03:53,426 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 [2023-11-06 23:03:53,427 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, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 23:03:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2023-11-06 23:03:53,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 8 letters. [2023-11-06 23:03:53,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:53,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 40 letters. Loop has 8 letters. [2023-11-06 23:03:53,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:53,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 16 letters. [2023-11-06 23:03:53,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:03:53,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 181 states and 211 transitions. [2023-11-06 23:03:53,435 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 23:03:53,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 181 states to 0 states and 0 transitions. [2023-11-06 23:03:53,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 23:03:53,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 23:03:53,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 23:03:53,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:53,436 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 23:03:53,436 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 23:03:53,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:03:53,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:03:53,437 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 23:03:53,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:53,437 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-06 23:03:53,437 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-06 23:03:53,437 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 23:03:53,437 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 23:03:53,437 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 23:03:53,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 23:03:53,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 23:03:53,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:53,438 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 23:03:53,438 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 23:03:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:03:53,439 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 23:03:53,439 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 23:03:53,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 23:03:53,439 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 23:03:53,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 23:03:53,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 11:03:53 BoogieIcfgContainer [2023-11-06 23:03:53,451 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 23:03:53,452 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:03:53,452 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:03:53,452 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:03:53,452 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:03:03" (3/4) ... [2023-11-06 23:03:53,454 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 23:03:53,456 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:03:53,457 INFO L158 Benchmark]: Toolchain (without parser) took 50538.05ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 136.0MB in the beginning and 130.9MB in the end (delta: 5.1MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2023-11-06 23:03:53,458 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:03:53,458 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.83ms. Allocated memory is still 167.8MB. Free memory was 135.7MB in the beginning and 125.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:03:53,459 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.55ms. Allocated memory is still 167.8MB. Free memory was 125.7MB in the beginning and 137.3MB in the end (delta: -11.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:03:53,463 INFO L158 Benchmark]: Boogie Preprocessor took 34.67ms. Allocated memory is still 167.8MB. Free memory was 137.3MB in the beginning and 136.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:03:53,466 INFO L158 Benchmark]: RCFGBuilder took 353.27ms. Allocated memory is still 167.8MB. Free memory was 136.3MB in the beginning and 127.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 23:03:53,467 INFO L158 Benchmark]: BuchiAutomizer took 49828.29ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 127.1MB in the beginning and 130.9MB in the end (delta: -3.8MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2023-11-06 23:03:53,467 INFO L158 Benchmark]: Witness Printer took 4.38ms. Allocated memory is still 201.3MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:03:53,471 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.83ms. Allocated memory is still 167.8MB. Free memory was 135.7MB in the beginning and 125.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.55ms. Allocated memory is still 167.8MB. Free memory was 125.7MB in the beginning and 137.3MB in the end (delta: -11.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.67ms. Allocated memory is still 167.8MB. Free memory was 137.3MB in the beginning and 136.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 353.27ms. Allocated memory is still 167.8MB. Free memory was 136.3MB in the beginning and 127.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 49828.29ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 127.1MB in the beginning and 130.9MB in the end (delta: -3.8MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * Witness Printer took 4.38ms. Allocated memory is still 201.3MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 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 * org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2fbcca44) + 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 20 locations. One nondeterministic module has affine ranking function ((-2 * org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2fbcca44) + 201) and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 49.7s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 41.5s. Construction of modules took 0.8s. Büchi inclusion checks took 7.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 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, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 287 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 272 mSDsluCounter, 365 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 199 mSDsCounter, 198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 820 IncrementalHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 198 mSolverCounterUnsat, 166 mSDtfsCounter, 820 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf90 smp100 dnf100 smp100 tf110 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 59ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 37.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-06 23:03:53,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:53,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-06 23:03:53,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c293bb50-8a94-4155-86be-cedadaadc251/bin/uautomizer-verify-WvqO1wxjHP/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