./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 64bit --witnessprinter.graph.data.programhash 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:33,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:33,574 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 07:46:33,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:33,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:33,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:33,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:33,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:33,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:33,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:33,639 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:33,639 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:46:33,640 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:46:33,642 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:46:33,642 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:46:33,643 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:46:33,643 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:46:33,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:33,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:46:33,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:33,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:33,648 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:46:33,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:46:33,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:46:33,649 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:33,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:46:33,650 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:46:33,651 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:33,651 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:33,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:33,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:33,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:33,654 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:46:33,654 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_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 [2023-11-19 07:46:33,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:34,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:34,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:34,008 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:34,009 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:34,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2023-11-19 07:46:37,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:37,412 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:37,412 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2023-11-19 07:46:37,420 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/data/4369f5e5b/00ad0c76da904eebb94d0921569b6bf1/FLAGbf9ec0a28 [2023-11-19 07:46:37,438 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/data/4369f5e5b/00ad0c76da904eebb94d0921569b6bf1 [2023-11-19 07:46:37,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:37,446 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:37,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:37,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:37,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:37,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@220c277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37, skipping insertion in model container [2023-11-19 07:46:37,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,480 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:37,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:37,686 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:37,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:37,721 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:37,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37 WrapperNode [2023-11-19 07:46:37,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:37,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:37,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:37,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:37,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,760 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-19 07:46:37,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:37,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:37,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:37,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:37,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:37,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:37,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:37,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:37,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (1/1) ... [2023-11-19 07:46:37,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:37,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:37,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:37,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:37,984 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:37,987 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:38,107 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:38,117 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:38,118 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:46:38,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:38 BoogieIcfgContainer [2023-11-19 07:46:38,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:38,123 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:46:38,123 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:46:38,127 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:46:38,128 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:46:38,129 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:46:37" (1/3) ... [2023-11-19 07:46:38,130 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c6482db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:46:38, skipping insertion in model container [2023-11-19 07:46:38,131 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:46:38,131 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:37" (2/3) ... [2023-11-19 07:46:38,133 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c6482db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:46:38, skipping insertion in model container [2023-11-19 07:46:38,134 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:46:38,134 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:38" (3/3) ... [2023-11-19 07:46:38,138 INFO L332 chiAutomizerObserver]: Analyzing ICFG UpAndDownIneq.c [2023-11-19 07:46:38,215 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:46:38,216 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:46:38,216 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:46:38,216 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:46:38,216 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:46:38,216 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:46:38,218 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:46:38,218 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:46:38,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:38,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-19 07:46:38,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:38,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:38,252 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:46:38,253 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:46:38,253 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:46:38,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:38,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-19 07:46:38,255 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:38,255 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:38,256 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:46:38,256 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:46:38,263 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4#L18-1true [2023-11-19 07:46:38,264 INFO L750 eck$LassoCheckResult]: Loop: 4#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 10#L12true assume !(main_~i~0#1 >= 10); 2#L12-2true assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 7#L15-1true assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4#L18-1true [2023-11-19 07:46:38,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-19 07:46:38,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:38,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977162825] [2023-11-19 07:46:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:38,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:38,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:38,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:38,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2023-11-19 07:46:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593779782] [2023-11-19 07:46:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:38,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:38,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:38,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:38,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2023-11-19 07:46:38,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:38,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080922890] [2023-11-19 07:46:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:38,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:38,431 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:38,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:38,569 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:38,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:38,570 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:38,570 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:38,570 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:46:38,570 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:38,570 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:38,570 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:38,571 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2023-11-19 07:46:38,571 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:38,571 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:38,591 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:38,605 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:38,610 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:38,615 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:38,692 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:38,693 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:46:38,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:38,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:38,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:38,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:38,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:38,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:46:38,770 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:46:38,770 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:46:38,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:38,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:38,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:38,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:38,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:46:38,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:38,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:38,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:46:38,827 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:46:38,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:38,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:38,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:38,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:38,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:46:38,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:38,862 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:38,883 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:46:38,883 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:46:38,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:38,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:38,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:38,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:46:38,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:38,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:38,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:38,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:38,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:38,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:38,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:46:38,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:46:38,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:38,987 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:46:39,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:39,001 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:39,001 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:39,001 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:39,002 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:39,002 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:46:39,002 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:39,002 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:39,002 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:39,002 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2023-11-19 07:46:39,002 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:39,002 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:39,005 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:39,009 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:39,014 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:39,022 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:39,081 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:39,086 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:46:39,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:39,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:39,090 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:39,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:46:39,100 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 [2023-11-19 07:46:39,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:39,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:39,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:39,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:39,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:46:39,119 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:46:39,135 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:46:39,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:39,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:39,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:39,172 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:39,180 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:46:39,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:39,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:39,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:39,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:39,203 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:46:39,203 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:46:39,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:46:39,237 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:46:39,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:39,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:39,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:39,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:39,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:46:39,265 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 [2023-11-19 07:46:39,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:39,278 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:46:39,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:39,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:39,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:39,280 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:46:39,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:46:39,289 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:46:39,298 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:46:39,298 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:46:39,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:39,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:39,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:39,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:46:39,353 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:46:39,353 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:46:39,354 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:46:39,354 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2023-11-19 07:46:39,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-19 07:46:39,371 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:46:39,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:39,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:39,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:39,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:39,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:39,516 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:46:39,518 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:39,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 51 transitions. Complement of second has 8 states. [2023-11-19 07:46:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:46:39,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2023-11-19 07:46:39,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-19 07:46:39,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:39,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-19 07:46:39,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:39,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 8 letters. [2023-11-19 07:46:39,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:39,644 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 51 transitions. [2023-11-19 07:46:39,651 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-19 07:46:39,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 19 states and 30 transitions. [2023-11-19 07:46:39,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-19 07:46:39,659 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-11-19 07:46:39,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2023-11-19 07:46:39,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:39,660 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 30 transitions. [2023-11-19 07:46:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2023-11-19 07:46:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-11-19 07:46:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2023-11-19 07:46:39,693 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-11-19 07:46:39,694 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-11-19 07:46:39,694 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:46:39,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2023-11-19 07:46:39,697 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-19 07:46:39,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:39,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:39,698 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:46:39,698 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:46:39,699 INFO L748 eck$LassoCheckResult]: Stem: 96#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 97#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 101#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 93#L12 [2023-11-19 07:46:39,699 INFO L750 eck$LassoCheckResult]: Loop: 93#L12 assume !(main_~i~0#1 >= 10); 102#L12-2 assume !(main_~i~0#1 <= 0); 103#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 92#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 93#L12 [2023-11-19 07:46:39,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:39,704 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-19 07:46:39,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:39,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157889223] [2023-11-19 07:46:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:39,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:39,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:39,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:39,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:39,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2023-11-19 07:46:39,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:39,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536551224] [2023-11-19 07:46:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:39,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:39,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:39,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:39,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2023-11-19 07:46:39,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:39,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865090316] [2023-11-19 07:46:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:39,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:39,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:39,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865090316] [2023-11-19 07:46:39,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865090316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:39,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:39,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:39,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379959621] [2023-11-19 07:46:39,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:39,879 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:39,879 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:39,879 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:39,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:39,880 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:46:39,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:39,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:39,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:39,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2023-11-19 07:46:39,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:39,881 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:39,883 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:39,887 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:39,896 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:39,900 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:39,951 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:39,951 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:46:39,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:39,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:39,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:39,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:46:39,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:39,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:39,992 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:46:39,992 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:46:40,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:40,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:40,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:40,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:40,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:40,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:40,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:46:40,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:40,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:40,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:40,098 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:40,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:46:40,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:46:40,105 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:40,159 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:46:40,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:40,166 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:40,166 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:40,166 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:40,166 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:40,167 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:46:40,167 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:40,167 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:40,167 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:40,167 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2023-11-19 07:46:40,167 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:40,167 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:40,169 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:40,182 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:40,200 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:40,207 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:40,263 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:40,263 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:46:40,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:40,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:40,265 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:40,315 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 [2023-11-19 07:46:40,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:46:40,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:40,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:40,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:40,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:40,333 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:46:40,333 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:46:40,349 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:46:40,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:40,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:40,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:40,379 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:40,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:46:40,386 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 [2023-11-19 07:46:40,400 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:40,400 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:46:40,400 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:40,400 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:40,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:40,405 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:46:40,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:46:40,415 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:46:40,420 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:46:40,420 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:46:40,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:40,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:40,427 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:40,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:46:40,431 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:46:40,433 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:46:40,433 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:46:40,433 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2023-11-19 07:46:40,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:40,455 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:46:40,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:40,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:40,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:40,606 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 [2023-11-19 07:46:40,606 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:40,678 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 44 states and 73 transitions. Complement of second has 7 states. [2023-11-19 07:46:40,679 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 [2023-11-19 07:46:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:40,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-19 07:46:40,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-19 07:46:40,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:40,683 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-19 07:46:40,683 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:40,683 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-19 07:46:40,684 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:40,684 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 73 transitions. [2023-11-19 07:46:40,695 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-19 07:46:40,699 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 36 states and 59 transitions. [2023-11-19 07:46:40,699 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-11-19 07:46:40,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2023-11-19 07:46:40,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 59 transitions. [2023-11-19 07:46:40,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:40,700 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36 states and 59 transitions. [2023-11-19 07:46:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 59 transitions. [2023-11-19 07:46:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2023-11-19 07:46:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2023-11-19 07:46:40,715 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 46 transitions. [2023-11-19 07:46:40,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:40,723 INFO L87 Difference]: Start difference. First operand 28 states and 46 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:40,743 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2023-11-19 07:46:40,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 56 transitions. [2023-11-19 07:46:40,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 07:46:40,750 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 32 states and 49 transitions. [2023-11-19 07:46:40,752 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-19 07:46:40,752 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-19 07:46:40,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 49 transitions. [2023-11-19 07:46:40,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:40,753 INFO L218 hiAutomatonCegarLoop]: Abstraction has 32 states and 49 transitions. [2023-11-19 07:46:40,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 49 transitions. [2023-11-19 07:46:40,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2023-11-19 07:46:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:40,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 40 transitions. [2023-11-19 07:46:40,762 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 40 transitions. [2023-11-19 07:46:40,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:40,766 INFO L428 stractBuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2023-11-19 07:46:40,766 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:46:40,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 40 transitions. [2023-11-19 07:46:40,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 07:46:40,768 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:40,768 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:40,768 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-19 07:46:40,769 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:46:40,769 INFO L748 eck$LassoCheckResult]: Stem: 268#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 269#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 272#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 273#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 260#L12-2 assume !(main_~i~0#1 <= 0); 261#L15-1 [2023-11-19 07:46:40,769 INFO L750 eck$LassoCheckResult]: Loop: 261#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 270#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 279#L12 assume !(main_~i~0#1 >= 10); 277#L12-2 assume !(main_~i~0#1 <= 0); 261#L15-1 [2023-11-19 07:46:40,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:40,770 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2023-11-19 07:46:40,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:40,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125716403] [2023-11-19 07:46:40,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:40,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:40,790 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:40,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:40,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:40,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2023-11-19 07:46:40,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:40,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057165187] [2023-11-19 07:46:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:40,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:40,817 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:40,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:40,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:40,825 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2023-11-19 07:46:40,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:40,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127322015] [2023-11-19 07:46:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:40,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:40,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:40,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:40,884 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:40,884 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:40,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:40,885 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:40,885 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:46:40,885 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:40,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:40,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:40,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2023-11-19 07:46:40,886 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:40,886 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:40,887 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:40,896 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:40,900 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:40,903 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:40,951 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:40,952 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:46:40,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:40,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:40,954 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:40,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:40,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:40,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 07:46:41,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:41,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:41,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:41,012 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:41,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:46:41,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:41,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-19 07:46:41,138 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:46:41,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-11-19 07:46:41,143 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:41,143 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:41,144 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:41,144 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:41,144 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:46:41,144 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:41,144 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:41,144 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:41,144 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2023-11-19 07:46:41,144 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:41,144 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:41,145 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:41,154 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:41,158 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:41,161 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:41,210 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:41,211 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:46:41,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:41,214 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:41,222 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 [2023-11-19 07:46:41,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 07:46:41,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:41,234 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:46:41,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:41,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:41,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:41,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:46:41,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:46:41,253 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:46:41,255 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 07:46:41,256 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:46:41,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:41,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:41,263 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:41,274 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:46:41,274 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:46:41,274 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:46:41,274 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-19 07:46:41,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 07:46:41,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:41,298 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:46:41,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:41,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:41,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:41,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:41,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:41,369 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:46:41,369 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:41,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:41,471 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 58 states and 90 transitions. Complement of second has 7 states. [2023-11-19 07:46:41,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:41,485 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 [2023-11-19 07:46:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-19 07:46:41,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2023-11-19 07:46:41,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:41,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-11-19 07:46:41,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:41,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2023-11-19 07:46:41,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:41,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 90 transitions. [2023-11-19 07:46:41,493 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-11-19 07:46:41,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 55 states and 85 transitions. [2023-11-19 07:46:41,494 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2023-11-19 07:46:41,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2023-11-19 07:46:41,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 85 transitions. [2023-11-19 07:46:41,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:41,494 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 85 transitions. [2023-11-19 07:46:41,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 85 transitions. [2023-11-19 07:46:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2023-11-19 07:46:41,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 48 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2023-11-19 07:46:41,501 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 79 transitions. [2023-11-19 07:46:41,501 INFO L428 stractBuchiCegarLoop]: Abstraction has 49 states and 79 transitions. [2023-11-19 07:46:41,501 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:46:41,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 79 transitions. [2023-11-19 07:46:41,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:41,503 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-11-19 07:46:41,504 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:41,504 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:41,504 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:46:41,504 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:46:41,505 INFO L748 eck$LassoCheckResult]: Stem: 402#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 403#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 408#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 419#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 413#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 414#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 417#L18-1 [2023-11-19 07:46:41,505 INFO L750 eck$LassoCheckResult]: Loop: 417#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 415#L12 assume !(main_~i~0#1 >= 10); 416#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 426#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 417#L18-1 [2023-11-19 07:46:41,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2023-11-19 07:46:41,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:41,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854411139] [2023-11-19 07:46:41,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:41,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:41,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:41,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854411139] [2023-11-19 07:46:41,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854411139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:41,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:41,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:41,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963633507] [2023-11-19 07:46:41,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:41,531 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:46:41,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:41,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1267246, now seen corresponding path program 1 times [2023-11-19 07:46:41,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:41,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904603342] [2023-11-19 07:46:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:41,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:41,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904603342] [2023-11-19 07:46:41,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904603342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:41,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:41,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:41,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696645420] [2023-11-19 07:46:41,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:41,555 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:46:41,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:41,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:41,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:41,556 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. cyclomatic complexity: 36 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:41,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:41,567 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2023-11-19 07:46:41,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 69 transitions. [2023-11-19 07:46:41,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 07:46:41,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 41 states and 60 transitions. [2023-11-19 07:46:41,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-19 07:46:41,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-19 07:46:41,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2023-11-19 07:46:41,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:41,571 INFO L218 hiAutomatonCegarLoop]: Abstraction has 41 states and 60 transitions. [2023-11-19 07:46:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2023-11-19 07:46:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-11-19 07:46:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.475) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2023-11-19 07:46:41,580 INFO L240 hiAutomatonCegarLoop]: Abstraction has 40 states and 59 transitions. [2023-11-19 07:46:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:41,582 INFO L428 stractBuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2023-11-19 07:46:41,582 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:46:41,583 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2023-11-19 07:46:41,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 07:46:41,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:41,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:41,584 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:46:41,584 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:46:41,585 INFO L748 eck$LassoCheckResult]: Stem: 505#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 506#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 510#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 517#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 515#L12-2 assume !(main_~i~0#1 <= 0); 507#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 508#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 527#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 497#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 498#L15-1 [2023-11-19 07:46:41,585 INFO L750 eck$LassoCheckResult]: Loop: 498#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 513#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 526#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 524#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 498#L15-1 [2023-11-19 07:46:41,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:41,585 INFO L85 PathProgramCache]: Analyzing trace with hash 588716517, now seen corresponding path program 1 times [2023-11-19 07:46:41,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:41,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996680159] [2023-11-19 07:46:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:41,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:41,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:41,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996680159] [2023-11-19 07:46:41,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996680159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:41,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:41,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:41,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549553827] [2023-11-19 07:46:41,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:41,640 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:46:41,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1709112, now seen corresponding path program 1 times [2023-11-19 07:46:41,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:41,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378332074] [2023-11-19 07:46:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:41,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:41,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:41,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378332074] [2023-11-19 07:46:41,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378332074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:41,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:41,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:41,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408901236] [2023-11-19 07:46:41,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:41,663 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:46:41,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:41,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:41,664 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. cyclomatic complexity: 24 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:41,677 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2023-11-19 07:46:41,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2023-11-19 07:46:41,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:46:41,680 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 45 states and 60 transitions. [2023-11-19 07:46:41,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2023-11-19 07:46:41,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2023-11-19 07:46:41,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 60 transitions. [2023-11-19 07:46:41,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:41,681 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 60 transitions. [2023-11-19 07:46:41,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 60 transitions. [2023-11-19 07:46:41,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2023-11-19 07:46:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2023-11-19 07:46:41,685 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 54 transitions. [2023-11-19 07:46:41,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:41,686 INFO L428 stractBuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2023-11-19 07:46:41,686 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 07:46:41,687 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 54 transitions. [2023-11-19 07:46:41,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-19 07:46:41,688 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:41,688 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:41,688 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:41,688 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:46:41,689 INFO L748 eck$LassoCheckResult]: Stem: 602#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 603#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 597#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 598#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 593#L12-2 assume !(main_~i~0#1 <= 0); 594#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 604#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 617#L12 assume !(main_~i~0#1 >= 10); 612#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 608#L15-1 [2023-11-19 07:46:41,689 INFO L750 eck$LassoCheckResult]: Loop: 608#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 609#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 614#L12 assume !(main_~i~0#1 >= 10); 613#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 608#L15-1 [2023-11-19 07:46:41,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:41,690 INFO L85 PathProgramCache]: Analyzing trace with hash 588716579, now seen corresponding path program 1 times [2023-11-19 07:46:41,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:41,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051503364] [2023-11-19 07:46:41,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:41,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:41,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:41,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051503364] [2023-11-19 07:46:41,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051503364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:41,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390334905] [2023-11-19 07:46:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:41,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:41,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:41,740 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:41,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:46:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:41,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:46:41,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:41,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:41,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390334905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:41,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:46:41,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 07:46:41,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071141201] [2023-11-19 07:46:41,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:41,847 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:46:41,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:41,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1709174, now seen corresponding path program 2 times [2023-11-19 07:46:41,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:41,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516030692] [2023-11-19 07:46:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:41,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:41,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:41,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:41,904 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:41,904 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:41,904 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:41,904 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:41,904 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:46:41,904 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:41,905 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:41,905 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:41,905 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2023-11-19 07:46:41,905 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:41,905 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:41,906 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:41,912 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:41,915 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:41,918 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:41,966 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:41,966 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:46:41,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:41,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:41,967 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:41,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 07:46:41,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:41,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:42,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:42,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:42,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:42,022 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:42,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:46:42,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:42,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 07:46:42,072 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:46:42,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-11-19 07:46:42,077 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:42,077 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:42,077 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:42,077 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:42,077 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:46:42,077 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:42,077 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:42,077 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:42,077 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2023-11-19 07:46:42,077 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:42,077 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:42,078 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,088 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,091 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,112 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,171 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:42,171 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:46:42,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:42,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:42,173 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:42,182 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 [2023-11-19 07:46:42,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:42,195 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:46:42,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:42,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:42,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:42,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 07:46:42,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:46:42,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:46:42,229 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:46:42,234 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:46:42,234 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:46:42,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:42,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:42,235 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:42,237 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:46:42,238 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:46:42,238 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:46:42,238 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-19 07:46:42,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 07:46:42,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:42,263 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:46:42,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:42,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:42,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:42,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:42,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:42,335 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:46:42,335 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 20 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,387 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 20. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101 states and 136 transitions. Complement of second has 7 states. [2023-11-19 07:46:42,388 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 [2023-11-19 07:46:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2023-11-19 07:46:42,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 4 letters. [2023-11-19 07:46:42,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:42,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 13 letters. Loop has 4 letters. [2023-11-19 07:46:42,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:42,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 8 letters. [2023-11-19 07:46:42,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:42,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 136 transitions. [2023-11-19 07:46:42,394 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2023-11-19 07:46:42,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 91 states and 122 transitions. [2023-11-19 07:46:42,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-19 07:46:42,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2023-11-19 07:46:42,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 122 transitions. [2023-11-19 07:46:42,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:42,397 INFO L218 hiAutomatonCegarLoop]: Abstraction has 91 states and 122 transitions. [2023-11-19 07:46:42,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 122 transitions. [2023-11-19 07:46:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2023-11-19 07:46:42,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 77 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2023-11-19 07:46:42,404 INFO L240 hiAutomatonCegarLoop]: Abstraction has 78 states and 109 transitions. [2023-11-19 07:46:42,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:42,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:42,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:42,405 INFO L87 Difference]: Start difference. First operand 78 states and 109 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:42,450 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2023-11-19 07:46:42,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 174 transitions. [2023-11-19 07:46:42,453 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2023-11-19 07:46:42,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 108 states and 137 transitions. [2023-11-19 07:46:42,455 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2023-11-19 07:46:42,455 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2023-11-19 07:46:42,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 137 transitions. [2023-11-19 07:46:42,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:42,456 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 137 transitions. [2023-11-19 07:46:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 137 transitions. [2023-11-19 07:46:42,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2023-11-19 07:46:42,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 85 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2023-11-19 07:46:42,463 INFO L240 hiAutomatonCegarLoop]: Abstraction has 86 states and 111 transitions. [2023-11-19 07:46:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:42,464 INFO L428 stractBuchiCegarLoop]: Abstraction has 86 states and 111 transitions. [2023-11-19 07:46:42,464 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-19 07:46:42,464 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 111 transitions. [2023-11-19 07:46:42,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2023-11-19 07:46:42,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:42,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:42,466 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:42,466 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:46:42,467 INFO L748 eck$LassoCheckResult]: Stem: 1071#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1072#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1075#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1085#L12 assume !(main_~i~0#1 >= 10); 1094#L12-2 assume !(main_~i~0#1 <= 0); 1092#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1091#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1088#L12 assume !(main_~i~0#1 >= 10); 1087#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1086#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1066#L18-1 [2023-11-19 07:46:42,467 INFO L750 eck$LassoCheckResult]: Loop: 1066#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1067#L12 assume !(main_~i~0#1 >= 10); 1116#L12-2 assume !(main_~i~0#1 <= 0); 1077#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1066#L18-1 [2023-11-19 07:46:42,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:42,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1449615143, now seen corresponding path program 1 times [2023-11-19 07:46:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:42,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14424434] [2023-11-19 07:46:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:42,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:42,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:42,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:42,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1267306, now seen corresponding path program 2 times [2023-11-19 07:46:42,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:42,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178756854] [2023-11-19 07:46:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:42,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:42,483 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:42,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:42,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash -130036926, now seen corresponding path program 2 times [2023-11-19 07:46:42,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:42,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596183615] [2023-11-19 07:46:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:42,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:42,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:42,498 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:42,531 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:42,531 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:42,531 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:42,531 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:42,531 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:46:42,531 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:42,532 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:42,532 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:42,532 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2023-11-19 07:46:42,532 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:42,532 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:42,533 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,540 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,544 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,546 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,584 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:42,584 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:46:42,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:42,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:42,585 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:42,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:42,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:42,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 07:46:42,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:42,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:42,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:42,637 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:42,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 07:46:42,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:46:42,647 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:42,663 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:46:42,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:42,676 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:42,676 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:42,676 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:42,676 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:42,676 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:46:42,677 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:42,677 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:42,677 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:42,677 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2023-11-19 07:46:42,677 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:42,677 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:42,678 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,689 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,692 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,696 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:42,746 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:42,748 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:46:42,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:42,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:42,750 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:42,754 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 [2023-11-19 07:46:42,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:42,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:46:42,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:42,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:42,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:42,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 07:46:42,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:46:42,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:46:42,785 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:46:42,798 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:46:42,798 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:46:42,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:42,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:42,800 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:42,802 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:46:42,802 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:46:42,802 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:46:42,802 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2023-11-19 07:46:42,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 07:46:42,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-19 07:46:42,816 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:46:42,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:42,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:42,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:42,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:42,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:42,905 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:46:42,905 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states and 111 transitions. cyclomatic complexity: 31 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,944 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states and 111 transitions. cyclomatic complexity: 31. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 115 states and 145 transitions. Complement of second has 7 states. [2023-11-19 07:46:42,945 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 [2023-11-19 07:46:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-19 07:46:42,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 4 letters. [2023-11-19 07:46:42,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:42,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 14 letters. Loop has 4 letters. [2023-11-19 07:46:42,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:42,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 8 letters. [2023-11-19 07:46:42,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:42,947 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 145 transitions. [2023-11-19 07:46:42,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2023-11-19 07:46:42,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 97 states and 125 transitions. [2023-11-19 07:46:42,950 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2023-11-19 07:46:42,950 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2023-11-19 07:46:42,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 125 transitions. [2023-11-19 07:46:42,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:42,950 INFO L218 hiAutomatonCegarLoop]: Abstraction has 97 states and 125 transitions. [2023-11-19 07:46:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 125 transitions. [2023-11-19 07:46:42,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2023-11-19 07:46:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 86 states have (on average 1.302325581395349) internal successors, (112), 85 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2023-11-19 07:46:42,956 INFO L240 hiAutomatonCegarLoop]: Abstraction has 86 states and 112 transitions. [2023-11-19 07:46:42,957 INFO L428 stractBuchiCegarLoop]: Abstraction has 86 states and 112 transitions. [2023-11-19 07:46:42,957 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-19 07:46:42,957 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 112 transitions. [2023-11-19 07:46:42,958 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2023-11-19 07:46:42,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:42,958 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:42,959 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:42,959 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:46:42,959 INFO L748 eck$LassoCheckResult]: Stem: 1337#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1338#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1342#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1399#L12 assume !(main_~i~0#1 >= 10); 1400#L12-2 assume !(main_~i~0#1 <= 0); 1373#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1370#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1365#L12 assume !(main_~i~0#1 >= 10); 1349#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1346#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1332#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1334#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1328#L12-2 [2023-11-19 07:46:42,959 INFO L750 eck$LassoCheckResult]: Loop: 1328#L12-2 assume !(main_~i~0#1 <= 0); 1329#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1347#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1395#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1328#L12-2 [2023-11-19 07:46:42,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:42,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1510748164, now seen corresponding path program 1 times [2023-11-19 07:46:42,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:42,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322479231] [2023-11-19 07:46:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:42,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:46:42,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:42,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322479231] [2023-11-19 07:46:42,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322479231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:42,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:42,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:42,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885334854] [2023-11-19 07:46:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:42,988 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:46:42,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:42,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2023-11-19 07:46:42,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:42,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013914987] [2023-11-19 07:46:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:42,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:42,993 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:42,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:43,029 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:43,030 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:43,030 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:43,030 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:43,030 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:46:43,030 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:43,030 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:43,030 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:43,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2023-11-19 07:46:43,031 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:43,031 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:43,032 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,037 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,040 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,044 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,097 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:43,097 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:46:43,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:43,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:43,102 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:43,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:43,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:43,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 07:46:43,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:43,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:43,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:43,153 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:43,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:46:43,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:43,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 07:46:43,197 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:46:43,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:43,220 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:43,220 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:43,220 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:43,221 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:43,221 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:46:43,221 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:43,221 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:43,221 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:43,221 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2023-11-19 07:46:43,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:43,221 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:43,222 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,227 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,230 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,276 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:43,276 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:46:43,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:43,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:43,278 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:43,285 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 [2023-11-19 07:46:43,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:43,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:46:43,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:43,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:43,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:43,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-19 07:46:43,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:46:43,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:46:43,313 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:46:43,321 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 07:46:43,321 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:46:43,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:43,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:43,323 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:43,336 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:46:43,336 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:46:43,336 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:46:43,336 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-19 07:46:43,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 07:46:43,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:43,355 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:46:43,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:43,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:43,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:43,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:43,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:43,427 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:46:43,428 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states and 112 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:43,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:43,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:43,511 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states and 112 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 188 states and 256 transitions. Complement of second has 7 states. [2023-11-19 07:46:43,514 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 [2023-11-19 07:46:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-19 07:46:43,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2023-11-19 07:46:43,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:43,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2023-11-19 07:46:43,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:43,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2023-11-19 07:46:43,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:43,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 188 states and 256 transitions. [2023-11-19 07:46:43,519 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2023-11-19 07:46:43,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 188 states to 140 states and 182 transitions. [2023-11-19 07:46:43,523 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2023-11-19 07:46:43,523 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2023-11-19 07:46:43,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 182 transitions. [2023-11-19 07:46:43,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:43,524 INFO L218 hiAutomatonCegarLoop]: Abstraction has 140 states and 182 transitions. [2023-11-19 07:46:43,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 182 transitions. [2023-11-19 07:46:43,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 94. [2023-11-19 07:46:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 93 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2023-11-19 07:46:43,530 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 124 transitions. [2023-11-19 07:46:43,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:43,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:43,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:43,531 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:43,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:43,555 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2023-11-19 07:46:43,555 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 132 transitions. [2023-11-19 07:46:43,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-11-19 07:46:43,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 103 states and 130 transitions. [2023-11-19 07:46:43,560 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2023-11-19 07:46:43,560 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2023-11-19 07:46:43,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 130 transitions. [2023-11-19 07:46:43,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:43,560 INFO L218 hiAutomatonCegarLoop]: Abstraction has 103 states and 130 transitions. [2023-11-19 07:46:43,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 130 transitions. [2023-11-19 07:46:43,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2023-11-19 07:46:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 93 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2023-11-19 07:46:43,572 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 121 transitions. [2023-11-19 07:46:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:43,574 INFO L428 stractBuchiCegarLoop]: Abstraction has 94 states and 121 transitions. [2023-11-19 07:46:43,574 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-19 07:46:43,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 94 states and 121 transitions. [2023-11-19 07:46:43,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2023-11-19 07:46:43,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:43,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:43,577 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1, 1] [2023-11-19 07:46:43,578 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 07:46:43,578 INFO L748 eck$LassoCheckResult]: Stem: 1881#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1882#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1886#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1895#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1896#L12-2 assume !(main_~i~0#1 <= 0); 1917#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1916#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1915#L12 assume !(main_~i~0#1 >= 10); 1914#L12-2 assume !(main_~i~0#1 <= 0); 1913#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1912#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1911#L12 assume !(main_~i~0#1 >= 10); 1910#L12-2 assume !(main_~i~0#1 <= 0); 1909#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1907#L12 assume !(main_~i~0#1 >= 10); 1903#L12-2 assume !(main_~i~0#1 <= 0); 1906#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1905#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1902#L12 assume !(main_~i~0#1 >= 10); 1901#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1900#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1891#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1880#L12 assume !(main_~i~0#1 >= 10); 1958#L12-2 assume !(main_~i~0#1 <= 0); 1885#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1878#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1879#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1872#L12-2 [2023-11-19 07:46:43,578 INFO L750 eck$LassoCheckResult]: Loop: 1872#L12-2 assume !(main_~i~0#1 <= 0); 1873#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1892#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1952#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1872#L12-2 [2023-11-19 07:46:43,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1054469156, now seen corresponding path program 2 times [2023-11-19 07:46:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102218541] [2023-11-19 07:46:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:43,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:46:43,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:43,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102218541] [2023-11-19 07:46:43,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102218541] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:43,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322467883] [2023-11-19 07:46:43,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:46:43,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:43,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:43,698 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:43,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-19 07:46:43,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:46:43,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:46:43,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:46:43,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:46:43,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:46:43,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322467883] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:43,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:46:43,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-19 07:46:43,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839330185] [2023-11-19 07:46:43,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:43,861 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:46:43,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:43,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2023-11-19 07:46:43,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:43,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683732193] [2023-11-19 07:46:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:43,879 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:43,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:43,918 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:43,918 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:43,918 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:43,918 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:43,918 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:46:43,918 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:43,919 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:43,919 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:43,919 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2023-11-19 07:46:43,919 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:43,919 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:43,920 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,926 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,929 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,932 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:43,985 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:43,985 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:46:43,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:43,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:43,987 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:43,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-19 07:46:43,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:43,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:44,001 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:46:44,001 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:46:44,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2023-11-19 07:46:44,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:44,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:44,019 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:44,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-19 07:46:44,021 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:44,021 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:44,053 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:46:44,054 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:46:44,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:44,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:44,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:44,084 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:44,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:44,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:44,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-19 07:46:44,106 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:46:44,106 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:46:44,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-11-19 07:46:44,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:44,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:44,127 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:44,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-19 07:46:44,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:46:44,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:44,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-11-19 07:46:44,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:44,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:44,156 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:44,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-19 07:46:44,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:46:44,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:46:44,182 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:46:44,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:44,195 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:46:44,195 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:46:44,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:46:44,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:46:44,195 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:46:44,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:44,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:46:44,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:46:44,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2023-11-19 07:46:44,196 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:46:44,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:46:44,197 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:44,206 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:44,209 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:44,212 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:46:44,262 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:46:44,262 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:46:44,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:44,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:44,263 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:44,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-19 07:46:44,266 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 [2023-11-19 07:46:44,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:44,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:46:44,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:44,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:44,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:44,277 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:46:44,277 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:46:44,301 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:46:44,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:44,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:44,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:44,327 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:44,334 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 [2023-11-19 07:46:44,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-19 07:46:44,346 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:44,346 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:44,346 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:44,346 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:44,349 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:46:44,349 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:46:44,366 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:46:44,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:44,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:44,391 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:44,398 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 [2023-11-19 07:46:44,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-19 07:46:44,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:44,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:44,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:44,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:44,412 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:46:44,412 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:46:44,423 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:46:44,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:44,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:44,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:44,448 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:44,454 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 [2023-11-19 07:46:44,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:46:44,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:46:44,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:46:44,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:46:44,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:46:44,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:46:44,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:46:44,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-19 07:46:44,489 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:46:44,492 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:46:44,492 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:46:44,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:46:44,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:44,494 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:44,500 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:46:44,501 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:46:44,501 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:46:44,501 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-19 07:46:44,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-19 07:46:44,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:44,523 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:46:44,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:44,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:44,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:44,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:44,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:44,618 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:46:44,619 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:44,648 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 148 states and 200 transitions. Complement of second has 7 states. [2023-11-19 07:46:44,649 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 [2023-11-19 07:46:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-19 07:46:44,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-19 07:46:44,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:44,653 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:46:44,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:44,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:44,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:44,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:44,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:44,741 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:46:44,742 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:44,783 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 173 states and 212 transitions. Complement of second has 7 states. [2023-11-19 07:46:44,783 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 [2023-11-19 07:46:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2023-11-19 07:46:44,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-19 07:46:44,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:44,785 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:46:44,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:44,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:44,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:44,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:44,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:44,864 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:46:44,865 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:44,899 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 163 states and 221 transitions. Complement of second has 8 states. [2023-11-19 07:46:44,899 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 [2023-11-19 07:46:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-11-19 07:46:44,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-19 07:46:44,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:44,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 32 letters. Loop has 4 letters. [2023-11-19 07:46:44,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:44,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 8 letters. [2023-11-19 07:46:44,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:46:44,904 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 163 states and 221 transitions. [2023-11-19 07:46:44,906 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2023-11-19 07:46:44,908 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 163 states to 115 states and 147 transitions. [2023-11-19 07:46:44,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2023-11-19 07:46:44,909 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2023-11-19 07:46:44,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 147 transitions. [2023-11-19 07:46:44,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:44,910 INFO L218 hiAutomatonCegarLoop]: Abstraction has 115 states and 147 transitions. [2023-11-19 07:46:44,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 147 transitions. [2023-11-19 07:46:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 61. [2023-11-19 07:46:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.278688524590164) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2023-11-19 07:46:44,925 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 78 transitions. [2023-11-19 07:46:44,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:44,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:46:44,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:46:44,926 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:45,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:45,049 INFO L93 Difference]: Finished difference Result 195 states and 238 transitions. [2023-11-19 07:46:45,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 238 transitions. [2023-11-19 07:46:45,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 82 [2023-11-19 07:46:45,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 182 states and 225 transitions. [2023-11-19 07:46:45,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 60 [2023-11-19 07:46:45,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 96 [2023-11-19 07:46:45,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 225 transitions. [2023-11-19 07:46:45,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:45,056 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 225 transitions. [2023-11-19 07:46:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 225 transitions. [2023-11-19 07:46:45,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2023-11-19 07:46:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.255952380952381) internal successors, (211), 167 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 211 transitions. [2023-11-19 07:46:45,063 INFO L240 hiAutomatonCegarLoop]: Abstraction has 168 states and 211 transitions. [2023-11-19 07:46:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:46:45,065 INFO L428 stractBuchiCegarLoop]: Abstraction has 168 states and 211 transitions. [2023-11-19 07:46:45,065 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-19 07:46:45,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 211 transitions. [2023-11-19 07:46:45,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-19 07:46:45,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:45,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:45,070 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:46:45,070 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2023-11-19 07:46:45,071 INFO L748 eck$LassoCheckResult]: Stem: 3212#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3213#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3217#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3223#L12 assume !(main_~i~0#1 >= 10); 3227#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 3225#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3208#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3209#L12 assume !(main_~i~0#1 >= 10); 3316#L12-2 assume !(main_~i~0#1 <= 0); 3317#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3312#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3272#L12 [2023-11-19 07:46:45,072 INFO L750 eck$LassoCheckResult]: Loop: 3272#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 3271#L12-2 assume !(main_~i~0#1 <= 0); 3207#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3311#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3220#L12 assume !(main_~i~0#1 >= 10); 3221#L12-2 assume !(main_~i~0#1 <= 0); 3216#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3210#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3211#L12 assume !(main_~i~0#1 >= 10); 3310#L12-2 assume !(main_~i~0#1 <= 0); 3309#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3308#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3307#L12 assume !(main_~i~0#1 >= 10); 3306#L12-2 assume !(main_~i~0#1 <= 0); 3305#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3304#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3303#L12 assume !(main_~i~0#1 >= 10); 3302#L12-2 assume !(main_~i~0#1 <= 0); 3301#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3300#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3299#L12 assume !(main_~i~0#1 >= 10); 3298#L12-2 assume !(main_~i~0#1 <= 0); 3297#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3296#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3295#L12 assume !(main_~i~0#1 >= 10); 3294#L12-2 assume !(main_~i~0#1 <= 0); 3293#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3292#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3291#L12 assume !(main_~i~0#1 >= 10); 3290#L12-2 assume !(main_~i~0#1 <= 0); 3289#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3288#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3287#L12 assume !(main_~i~0#1 >= 10); 3286#L12-2 assume !(main_~i~0#1 <= 0); 3285#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3284#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3283#L12 assume !(main_~i~0#1 >= 10); 3278#L12-2 assume !(main_~i~0#1 <= 0); 3282#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3281#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3277#L12 assume !(main_~i~0#1 >= 10); 3276#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 3274#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3275#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3279#L12 assume !(main_~i~0#1 >= 10); 3280#L12-2 assume !(main_~i~0#1 <= 0); 3371#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3370#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3343#L12 assume !(main_~i~0#1 >= 10); 3204#L12-2 assume !(main_~i~0#1 <= 0); 3205#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3224#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3344#L12 assume !(main_~i~0#1 >= 10); 3369#L12-2 assume !(main_~i~0#1 <= 0); 3368#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3367#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3366#L12 assume !(main_~i~0#1 >= 10); 3365#L12-2 assume !(main_~i~0#1 <= 0); 3364#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3363#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3362#L12 assume !(main_~i~0#1 >= 10); 3361#L12-2 assume !(main_~i~0#1 <= 0); 3360#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3359#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3358#L12 assume !(main_~i~0#1 >= 10); 3357#L12-2 assume !(main_~i~0#1 <= 0); 3356#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3355#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3354#L12 assume !(main_~i~0#1 >= 10); 3353#L12-2 assume !(main_~i~0#1 <= 0); 3352#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3351#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3350#L12 assume !(main_~i~0#1 >= 10); 3349#L12-2 assume !(main_~i~0#1 <= 0); 3348#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3347#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3346#L12 assume !(main_~i~0#1 >= 10); 3219#L12-2 assume !(main_~i~0#1 <= 0); 3345#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3273#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3272#L12 [2023-11-19 07:46:45,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:45,073 INFO L85 PathProgramCache]: Analyzing trace with hash 474307092, now seen corresponding path program 1 times [2023-11-19 07:46:45,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:45,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528965189] [2023-11-19 07:46:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:45,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:45,081 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:45,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:45,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1617023097, now seen corresponding path program 1 times [2023-11-19 07:46:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:45,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664790807] [2023-11-19 07:46:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:45,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:45,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:45,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:45,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -68907892, now seen corresponding path program 3 times [2023-11-19 07:46:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769581392] [2023-11-19 07:46:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:45,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-19 07:46:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769581392] [2023-11-19 07:46:45,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769581392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708279503] [2023-11-19 07:46:45,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:46:45,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:45,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:45,293 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:45,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-19 07:46:45,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-19 07:46:45,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:46:45,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:45,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-19 07:46:45,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-19 07:46:45,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708279503] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:45,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:46:45,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-19 07:46:45,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042703298] [2023-11-19 07:46:45,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:46,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:46,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:46:46,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:46:46,018 INFO L87 Difference]: Start difference. First operand 168 states and 211 transitions. cyclomatic complexity: 46 Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:46,086 INFO L93 Difference]: Finished difference Result 179 states and 197 transitions. [2023-11-19 07:46:46,087 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 179 states and 197 transitions. [2023-11-19 07:46:46,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-19 07:46:46,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 179 states to 175 states and 193 transitions. [2023-11-19 07:46:46,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2023-11-19 07:46:46,091 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2023-11-19 07:46:46,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 193 transitions. [2023-11-19 07:46:46,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:46,091 INFO L218 hiAutomatonCegarLoop]: Abstraction has 175 states and 193 transitions. [2023-11-19 07:46:46,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 193 transitions. [2023-11-19 07:46:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2023-11-19 07:46:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.1011904761904763) internal successors, (185), 167 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 185 transitions. [2023-11-19 07:46:46,096 INFO L240 hiAutomatonCegarLoop]: Abstraction has 168 states and 185 transitions. [2023-11-19 07:46:46,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:46,097 INFO L428 stractBuchiCegarLoop]: Abstraction has 168 states and 185 transitions. [2023-11-19 07:46:46,097 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-19 07:46:46,097 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 185 transitions. [2023-11-19 07:46:46,098 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-19 07:46:46,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:46,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:46,100 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1] [2023-11-19 07:46:46,100 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2023-11-19 07:46:46,101 INFO L748 eck$LassoCheckResult]: Stem: 4112#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 4113#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4117#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4129#L12 assume !(main_~i~0#1 >= 10); 4125#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 4122#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4123#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4258#L12 assume !(main_~i~0#1 >= 10); 4257#L12-2 assume !(main_~i~0#1 <= 0); 4120#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4121#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4256#L12 assume !(main_~i~0#1 >= 10); 4254#L12-2 assume !(main_~i~0#1 <= 0); 4255#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4249#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4118#L12 assume !(main_~i~0#1 >= 10); 4104#L12-2 assume !(main_~i~0#1 <= 0); 4105#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4253#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4252#L12 assume !(main_~i~0#1 >= 10); 4251#L12-2 assume !(main_~i~0#1 <= 0); 4250#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4108#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4109#L12 assume !(main_~i~0#1 >= 10); 4271#L12-2 assume !(main_~i~0#1 <= 0); 4270#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4259#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4172#L12 [2023-11-19 07:46:46,101 INFO L750 eck$LassoCheckResult]: Loop: 4172#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 4171#L12-2 assume !(main_~i~0#1 <= 0); 4116#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4110#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4111#L12 assume !(main_~i~0#1 >= 10); 4106#L12-2 assume !(main_~i~0#1 <= 0); 4107#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4248#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4247#L12 assume !(main_~i~0#1 >= 10); 4246#L12-2 assume !(main_~i~0#1 <= 0); 4245#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4244#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4243#L12 assume !(main_~i~0#1 >= 10); 4242#L12-2 assume !(main_~i~0#1 <= 0); 4241#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4240#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4239#L12 assume !(main_~i~0#1 >= 10); 4238#L12-2 assume !(main_~i~0#1 <= 0); 4237#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4236#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4235#L12 assume !(main_~i~0#1 >= 10); 4234#L12-2 assume !(main_~i~0#1 <= 0); 4233#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4232#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4231#L12 assume !(main_~i~0#1 >= 10); 4230#L12-2 assume !(main_~i~0#1 <= 0); 4229#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4228#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4227#L12 assume !(main_~i~0#1 >= 10); 4226#L12-2 assume !(main_~i~0#1 <= 0); 4225#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4224#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4223#L12 assume !(main_~i~0#1 >= 10); 4222#L12-2 assume !(main_~i~0#1 <= 0); 4221#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4220#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4219#L12 assume !(main_~i~0#1 >= 10); 4216#L12-2 assume !(main_~i~0#1 <= 0); 4218#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4217#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4215#L12 assume !(main_~i~0#1 >= 10); 4214#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 4211#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4213#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4212#L12 assume !(main_~i~0#1 >= 10); 4210#L12-2 assume !(main_~i~0#1 <= 0); 4209#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4208#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4207#L12 assume !(main_~i~0#1 >= 10); 4206#L12-2 assume !(main_~i~0#1 <= 0); 4205#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4203#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4201#L12 assume !(main_~i~0#1 >= 10); 4199#L12-2 assume !(main_~i~0#1 <= 0); 4197#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4195#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4193#L12 assume !(main_~i~0#1 >= 10); 4191#L12-2 assume !(main_~i~0#1 <= 0); 4189#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4187#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4185#L12 assume !(main_~i~0#1 >= 10); 4183#L12-2 assume !(main_~i~0#1 <= 0); 4182#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4173#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4174#L12 assume !(main_~i~0#1 >= 10); 4184#L12-2 assume !(main_~i~0#1 <= 0); 4204#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4202#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4200#L12 assume !(main_~i~0#1 >= 10); 4198#L12-2 assume !(main_~i~0#1 <= 0); 4196#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4194#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4192#L12 assume !(main_~i~0#1 >= 10); 4190#L12-2 assume !(main_~i~0#1 <= 0); 4188#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4186#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4178#L12 assume !(main_~i~0#1 >= 10); 4179#L12-2 assume !(main_~i~0#1 <= 0); 4260#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4181#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4172#L12 [2023-11-19 07:46:46,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1514411024, now seen corresponding path program 2 times [2023-11-19 07:46:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:46,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916894167] [2023-11-19 07:46:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:46,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:46,109 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:46,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:46,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:46,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1617023097, now seen corresponding path program 2 times [2023-11-19 07:46:46,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:46,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744214956] [2023-11-19 07:46:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:46,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:46,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:46,139 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:46,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:46,140 INFO L85 PathProgramCache]: Analyzing trace with hash -883489176, now seen corresponding path program 4 times [2023-11-19 07:46:46,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:46,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241177722] [2023-11-19 07:46:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:46,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-19 07:46:46,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:46,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241177722] [2023-11-19 07:46:46,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241177722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:46,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897885259] [2023-11-19 07:46:46,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:46:46,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:46,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:46,370 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:46,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-19 07:46:46,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:46:46,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:46:46,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:46:46,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-19 07:46:46,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:46,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-19 07:46:46,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897885259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:46,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:46:46,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2023-11-19 07:46:46,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880734373] [2023-11-19 07:46:46,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:47,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:46:47,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:46:47,246 INFO L87 Difference]: Start difference. First operand 168 states and 185 transitions. cyclomatic complexity: 21 Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:47,352 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2023-11-19 07:46:47,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 229 transitions. [2023-11-19 07:46:47,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-19 07:46:47,356 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 208 states and 223 transitions. [2023-11-19 07:46:47,356 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2023-11-19 07:46:47,357 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 194 [2023-11-19 07:46:47,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 223 transitions. [2023-11-19 07:46:47,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:46:47,358 INFO L218 hiAutomatonCegarLoop]: Abstraction has 208 states and 223 transitions. [2023-11-19 07:46:47,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 223 transitions. [2023-11-19 07:46:47,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 167. [2023-11-19 07:46:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.089820359281437) internal successors, (182), 166 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2023-11-19 07:46:47,363 INFO L240 hiAutomatonCegarLoop]: Abstraction has 167 states and 182 transitions. [2023-11-19 07:46:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:46:47,364 INFO L428 stractBuchiCegarLoop]: Abstraction has 167 states and 182 transitions. [2023-11-19 07:46:47,364 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2023-11-19 07:46:47,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 182 transitions. [2023-11-19 07:46:47,366 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-19 07:46:47,366 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:46:47,366 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:46:47,367 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:46:47,367 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2023-11-19 07:46:47,368 INFO L748 eck$LassoCheckResult]: Stem: 5147#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 5148#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 5150#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5162#L12 assume !(main_~i~0#1 >= 10); 5159#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 5155#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5156#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5202#L12 assume !(main_~i~0#1 >= 10); 5199#L12-2 assume !(main_~i~0#1 <= 0); 5198#L15-1 [2023-11-19 07:46:47,368 INFO L750 eck$LassoCheckResult]: Loop: 5198#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5197#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5196#L12 assume !(main_~i~0#1 >= 10); 5195#L12-2 assume !(main_~i~0#1 <= 0); 5194#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5193#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5192#L12 assume !(main_~i~0#1 >= 10); 5191#L12-2 assume !(main_~i~0#1 <= 0); 5190#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5189#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5188#L12 assume !(main_~i~0#1 >= 10); 5187#L12-2 assume !(main_~i~0#1 <= 0); 5186#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5185#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5184#L12 assume !(main_~i~0#1 >= 10); 5183#L12-2 assume !(main_~i~0#1 <= 0); 5182#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5181#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5180#L12 assume !(main_~i~0#1 >= 10); 5179#L12-2 assume !(main_~i~0#1 <= 0); 5178#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5177#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5176#L12 assume !(main_~i~0#1 >= 10); 5175#L12-2 assume !(main_~i~0#1 <= 0); 5174#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5173#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5172#L12 assume !(main_~i~0#1 >= 10); 5171#L12-2 assume !(main_~i~0#1 <= 0); 5170#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5169#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5168#L12 assume !(main_~i~0#1 >= 10); 5167#L12-2 assume !(main_~i~0#1 <= 0); 5166#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5165#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5164#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 5161#L12-2 assume !(main_~i~0#1 <= 0); 5142#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5145#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5146#L12 assume !(main_~i~0#1 >= 10); 5241#L12-2 assume !(main_~i~0#1 <= 0); 5240#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5239#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5238#L12 assume !(main_~i~0#1 >= 10); 5237#L12-2 assume !(main_~i~0#1 <= 0); 5236#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5235#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5234#L12 assume !(main_~i~0#1 >= 10); 5233#L12-2 assume !(main_~i~0#1 <= 0); 5232#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5231#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5230#L12 assume !(main_~i~0#1 >= 10); 5229#L12-2 assume !(main_~i~0#1 <= 0); 5228#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5227#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5226#L12 assume !(main_~i~0#1 >= 10); 5225#L12-2 assume !(main_~i~0#1 <= 0); 5224#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5223#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5222#L12 assume !(main_~i~0#1 >= 10); 5221#L12-2 assume !(main_~i~0#1 <= 0); 5220#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5219#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5218#L12 assume !(main_~i~0#1 >= 10); 5217#L12-2 assume !(main_~i~0#1 <= 0); 5216#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5215#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5214#L12 assume !(main_~i~0#1 >= 10); 5213#L12-2 assume !(main_~i~0#1 <= 0); 5212#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5211#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5210#L12 assume !(main_~i~0#1 >= 10); 5209#L12-2 assume !(main_~i~0#1 <= 0); 5208#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5207#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5206#L12 assume !(main_~i~0#1 >= 10); 5205#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 5203#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5204#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5200#L12 assume !(main_~i~0#1 >= 10); 5201#L12-2 assume !(main_~i~0#1 <= 0); 5198#L15-1 [2023-11-19 07:46:47,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash 644068259, now seen corresponding path program 3 times [2023-11-19 07:46:47,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:47,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623394606] [2023-11-19 07:46:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:47,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:47,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:47,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:47,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1888138361, now seen corresponding path program 3 times [2023-11-19 07:46:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:47,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262416746] [2023-11-19 07:46:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:47,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:47,390 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:47,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:47,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1126640613, now seen corresponding path program 5 times [2023-11-19 07:46:47,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:47,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798423832] [2023-11-19 07:46:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:47,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:47,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:47,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:48,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:48,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:46:48 BoogieIcfgContainer [2023-11-19 07:46:48,109 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:46:48,110 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:46:48,110 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:46:48,110 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:46:48,111 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:38" (3/4) ... [2023-11-19 07:46:48,112 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-19 07:46:48,160 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:46:48,160 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:46:48,161 INFO L158 Benchmark]: Toolchain (without parser) took 10715.04ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 88.6MB in the beginning and 82.7MB in the end (delta: 5.9MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2023-11-19 07:46:48,161 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 134.2MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:46:48,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.90ms. Allocated memory is still 134.2MB. Free memory was 88.3MB in the beginning and 78.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:46:48,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.51ms. Allocated memory is still 134.2MB. Free memory was 78.6MB in the beginning and 77.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:46:48,162 INFO L158 Benchmark]: Boogie Preprocessor took 24.58ms. Allocated memory is still 134.2MB. Free memory was 77.3MB in the beginning and 76.5MB in the end (delta: 812.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:46:48,163 INFO L158 Benchmark]: RCFGBuilder took 331.77ms. Allocated memory is still 134.2MB. Free memory was 76.3MB in the beginning and 67.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:46:48,163 INFO L158 Benchmark]: BuchiAutomizer took 9986.25ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 67.6MB in the beginning and 85.8MB in the end (delta: -18.2MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2023-11-19 07:46:48,164 INFO L158 Benchmark]: Witness Printer took 50.43ms. Allocated memory is still 182.5MB. Free memory was 85.8MB in the beginning and 82.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:46:48,165 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 134.2MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.90ms. Allocated memory is still 134.2MB. Free memory was 88.3MB in the beginning and 78.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.51ms. Allocated memory is still 134.2MB. Free memory was 78.6MB in the beginning and 77.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.58ms. Allocated memory is still 134.2MB. Free memory was 77.3MB in the beginning and 76.5MB in the end (delta: 812.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 331.77ms. Allocated memory is still 134.2MB. Free memory was 76.3MB in the beginning and 67.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 9986.25ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 67.6MB in the beginning and 85.8MB in the end (delta: -18.2MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * Witness Printer took 50.43ms. Allocated memory is still 182.5MB. Free memory was 85.8MB in the beginning and 82.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 15 terminating modules (8 trivial, 6 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function ((-2 * i) + 1) and consists of 5 locations. One deterministic module has affine ranking function ((-2 * i) + 19) and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function (-1 * i) and consists of 4 locations. One deterministic module has affine ranking function ((-2 * i) + 19) and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 167 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.8s and 12 iterations. TraceHistogramMax:20. Analysis of lassos took 7.6s. Construction of modules took 0.5s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 15. Automata minimization 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 245 StatesRemovedByMinimization, 15 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 [6, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 529 IncrementalHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 134 mSDtfsCounter, 529 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc2 concLT1 SILN0 SILU0 SILI2 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax182 hnf100 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf90 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 VAL [up=0] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=0, up=0] [L12] COND FALSE !(i >= 10) VAL [i=0, up=0] [L15] COND TRUE i <= 0 [L16] up = 1 VAL [i=0, up=1] [L18] COND TRUE up >= 1 [L19] i = i+1 VAL [i=1, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=1, up=1] [L12] COND FALSE !(i >= 10) VAL [i=1, up=1] [L15] COND FALSE !(i <= 0) VAL [i=1, up=1] Loop: [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i >= 10 [L13] up = 0 [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND TRUE i <= 0 [L16] up = 1 [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 VAL [up=0] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=0, up=0] [L12] COND FALSE !(i >= 10) VAL [i=0, up=0] [L15] COND TRUE i <= 0 [L16] up = 1 VAL [i=0, up=1] [L18] COND TRUE up >= 1 [L19] i = i+1 VAL [i=1, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=1, up=1] [L12] COND FALSE !(i >= 10) VAL [i=1, up=1] [L15] COND FALSE !(i <= 0) VAL [i=1, up=1] Loop: [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i >= 10 [L13] up = 0 [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND TRUE i <= 0 [L16] up = 1 [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-19 07:46:48,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:48,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-19 07:46:48,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:48,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-19 07:46:49,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c5338f-557c-4743-addc-5c92e2ba9352/bin/uautomizer-verify-uCwYo4JHxu/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)