./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-simple/nested_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-simple/nested_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ --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 32bit --witnessprinter.graph.data.programhash 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:35:22,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:35:22,506 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-23 21:35:22,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:35:22,513 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:35:22,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:35:22,547 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:35:22,548 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:35:22,549 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:35:22,550 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:35:22,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:35:22,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:35:22,552 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:35:22,553 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-23 21:35:22,554 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-23 21:35:22,555 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-23 21:35:22,556 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-23 21:35:22,556 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-23 21:35:22,557 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-23 21:35:22,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:35:22,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-23 21:35:22,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:35:22,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:35:22,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:35:22,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:35:22,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-23 21:35:22,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-23 21:35:22,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-23 21:35:22,565 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:35:22,566 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:35:22,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:35:22,567 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-23 21:35:22,568 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:35:22,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:35:22,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:35:22,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:35:22,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:35:22,571 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-23 21:35:22,572 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_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 [2023-11-23 21:35:22,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:35:22,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:35:22,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:35:22,943 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:35:22,944 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:35:22,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/loop-simple/nested_3.c [2023-11-23 21:35:26,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:35:26,717 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:35:26,718 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/sv-benchmarks/c/loop-simple/nested_3.c [2023-11-23 21:35:26,728 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/data/856ec2ebe/b2ca3d4db99e4e6293aadd3f4c48e228/FLAGe1388fccf [2023-11-23 21:35:26,746 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/data/856ec2ebe/b2ca3d4db99e4e6293aadd3f4c48e228 [2023-11-23 21:35:26,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:35:26,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:35:26,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:26,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:35:26,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:35:26,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:26" (1/1) ... [2023-11-23 21:35:26,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@481f2159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:26, skipping insertion in model container [2023-11-23 21:35:26,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:26" (1/1) ... [2023-11-23 21:35:26,794 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:35:26,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:26,991 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:35:27,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:27,026 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:35:27,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27 WrapperNode [2023-11-23 21:35:27,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:27,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:27,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:35:27,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:35:27,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,065 INFO L138 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2023-11-23 21:35:27,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:27,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:35:27,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:35:27,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:35:27,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,080 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,090 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 21:35:27,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,099 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:35:27,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:35:27,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:35:27,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:35:27,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (1/1) ... [2023-11-23 21:35:27,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:27,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:27,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:27,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-23 21:35:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:35:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:35:27,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:35:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:35:27,294 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:35:27,297 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:35:27,531 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:35:27,542 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:35:27,551 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:35:27,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:27 BoogieIcfgContainer [2023-11-23 21:35:27,553 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:35:27,554 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-23 21:35:27,555 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-23 21:35:27,561 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-23 21:35:27,562 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 21:35:27,562 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 09:35:26" (1/3) ... [2023-11-23 21:35:27,563 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a5e6bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 09:35:27, skipping insertion in model container [2023-11-23 21:35:27,564 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 21:35:27,566 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:27" (2/3) ... [2023-11-23 21:35:27,568 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a5e6bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 09:35:27, skipping insertion in model container [2023-11-23 21:35:27,569 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 21:35:27,569 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:27" (3/3) ... [2023-11-23 21:35:27,571 INFO L332 chiAutomizerObserver]: Analyzing ICFG nested_3.c [2023-11-23 21:35:27,659 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-23 21:35:27,660 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-23 21:35:27,660 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-23 21:35:27,661 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-23 21:35:27,661 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-23 21:35:27,661 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-23 21:35:27,661 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-23 21:35:27,662 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-23 21:35:27,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2023-11-23 21:35:27,692 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-23 21:35:27,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:27,693 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:27,701 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 21:35:27,701 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-23 21:35:27,701 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-23 21:35:27,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2023-11-23 21:35:27,706 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-23 21:35:27,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:27,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:27,707 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 21:35:27,707 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-23 21:35:27,717 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 4#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 3#L21-3true [2023-11-23 21:35:27,717 INFO L750 eck$LassoCheckResult]: Loop: 3#L21-3true assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 11#L22-3true assume !(main_~b~0#1 < 6); 13#L21-2true main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 3#L21-3true [2023-11-23 21:35:27,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-23 21:35:27,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:27,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092885086] [2023-11-23 21:35:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:27,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:27,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:27,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:27,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash 39933, now seen corresponding path program 1 times [2023-11-23 21:35:27,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:27,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037030114] [2023-11-23 21:35:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:27,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:27,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:27,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037030114] [2023-11-23 21:35:27,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037030114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:27,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:27,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:35:27,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460770697] [2023-11-23 21:35:27,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:27,973 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 21:35:27,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:28,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:28,014 INFO L87 Difference]: Start difference. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-23 21:35:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:28,050 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2023-11-23 21:35:28,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 20 transitions. [2023-11-23 21:35:28,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-23 21:35:28,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 15 transitions. [2023-11-23 21:35:28,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-23 21:35:28,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-23 21:35:28,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2023-11-23 21:35:28,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:28,062 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2023-11-23 21:35:28,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2023-11-23 21:35:28,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 9. [2023-11-23 21:35:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-11-23 21:35:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2023-11-23 21:35:28,099 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-23 21:35:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:28,115 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-23 21:35:28,115 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-23 21:35:28,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2023-11-23 21:35:28,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-23 21:35:28,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:28,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:28,119 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 21:35:28,120 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:35:28,121 INFO L748 eck$LassoCheckResult]: Stem: 44#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 45#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 40#L21-3 [2023-11-23 21:35:28,121 INFO L750 eck$LassoCheckResult]: Loop: 40#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 41#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 43#L23-3 assume !(main_~c~0#1 < 6); 47#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 48#L22-3 assume !(main_~b~0#1 < 6); 46#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 40#L21-3 [2023-11-23 21:35:28,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:28,123 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-23 21:35:28,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:28,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431624390] [2023-11-23 21:35:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:28,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:28,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:28,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:28,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1191164837, now seen corresponding path program 1 times [2023-11-23 21:35:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:28,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377851369] [2023-11-23 21:35:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:28,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:28,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:28,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377851369] [2023-11-23 21:35:28,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377851369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:28,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:28,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:28,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526412939] [2023-11-23 21:35:28,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:28,271 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 21:35:28,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:28,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:28,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:28,273 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-11-23 21:35:28,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:28,293 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2023-11-23 21:35:28,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2023-11-23 21:35:28,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-23 21:35:28,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2023-11-23 21:35:28,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-11-23 21:35:28,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-23 21:35:28,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2023-11-23 21:35:28,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:28,297 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-11-23 21:35:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2023-11-23 21:35:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2023-11-23 21:35:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 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) [2023-11-23 21:35:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-23 21:35:28,300 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-23 21:35:28,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:28,302 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-23 21:35:28,302 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-23 21:35:28,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2023-11-23 21:35:28,303 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-23 21:35:28,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:28,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:28,304 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 21:35:28,305 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:28,305 INFO L748 eck$LassoCheckResult]: Stem: 70#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 71#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 66#L21-3 [2023-11-23 21:35:28,305 INFO L750 eck$LassoCheckResult]: Loop: 66#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 67#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 72#L23-3 assume !!(main_~c~0#1 < 6); 68#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 69#L23-3 assume !(main_~c~0#1 < 6); 74#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 75#L22-3 assume !(main_~b~0#1 < 6); 73#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 66#L21-3 [2023-11-23 21:35:28,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:28,306 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-23 21:35:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:28,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301199206] [2023-11-23 21:35:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:28,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:28,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:28,335 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:28,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1993060441, now seen corresponding path program 1 times [2023-11-23 21:35:28,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:28,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459742237] [2023-11-23 21:35:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:28,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:28,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:28,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459742237] [2023-11-23 21:35:28,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459742237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:35:28,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029185636] [2023-11-23 21:35:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:28,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:35:28,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:28,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:35:28,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:35:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:28,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:35:28,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:28,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:35:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:28,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029185636] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:35:28,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:35:28,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-23 21:35:28,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349209125] [2023-11-23 21:35:28,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:35:28,586 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 21:35:28,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:28,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:35:28,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:35:28,588 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 3 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2023-11-23 21:35:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:28,624 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-11-23 21:35:28,624 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2023-11-23 21:35:28,626 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-23 21:35:28,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 18 transitions. [2023-11-23 21:35:28,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-11-23 21:35:28,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-11-23 21:35:28,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 18 transitions. [2023-11-23 21:35:28,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:28,628 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-23 21:35:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 18 transitions. [2023-11-23 21:35:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-23 21:35:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 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) [2023-11-23 21:35:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-11-23 21:35:28,631 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-23 21:35:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:35:28,633 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-23 21:35:28,633 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-23 21:35:28,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2023-11-23 21:35:28,634 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-23 21:35:28,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:28,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:28,635 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 21:35:28,635 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:28,636 INFO L748 eck$LassoCheckResult]: Stem: 147#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 148#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 143#L21-3 [2023-11-23 21:35:28,636 INFO L750 eck$LassoCheckResult]: Loop: 143#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 144#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 149#L23-3 assume !!(main_~c~0#1 < 6); 145#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 146#L23-3 assume !!(main_~c~0#1 < 6); 158#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 157#L23-3 assume !!(main_~c~0#1 < 6); 156#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 155#L23-3 assume !!(main_~c~0#1 < 6); 154#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 153#L23-3 assume !(main_~c~0#1 < 6); 151#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 152#L22-3 assume !(main_~b~0#1 < 6); 150#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 143#L21-3 [2023-11-23 21:35:28,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-23 21:35:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:28,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671650920] [2023-11-23 21:35:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:28,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:28,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:28,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1917011795, now seen corresponding path program 2 times [2023-11-23 21:35:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:28,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791518558] [2023-11-23 21:35:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:28,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 21:35:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:28,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791518558] [2023-11-23 21:35:28,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791518558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:35:28,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985787544] [2023-11-23 21:35:28,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:35:28,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:35:28,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:28,772 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:35:28,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:35:28,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:35:28,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:35:28,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:35:28,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:29,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:35:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:29,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985787544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:35:29,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:35:29,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 10 [2023-11-23 21:35:29,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132019746] [2023-11-23 21:35:29,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:35:29,143 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 21:35:29,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:35:29,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:35:29,145 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. cyclomatic complexity: 3 Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 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) [2023-11-23 21:35:29,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:29,361 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2023-11-23 21:35:29,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 53 transitions. [2023-11-23 21:35:29,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2023-11-23 21:35:29,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 53 transitions. [2023-11-23 21:35:29,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2023-11-23 21:35:29,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2023-11-23 21:35:29,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 53 transitions. [2023-11-23 21:35:29,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:29,367 INFO L218 hiAutomatonCegarLoop]: Abstraction has 49 states and 53 transitions. [2023-11-23 21:35:29,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 53 transitions. [2023-11-23 21:35:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2023-11-23 21:35:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 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) [2023-11-23 21:35:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-11-23 21:35:29,375 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-11-23 21:35:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 21:35:29,377 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-11-23 21:35:29,379 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-23 21:35:29,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 38 transitions. [2023-11-23 21:35:29,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2023-11-23 21:35:29,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:29,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:29,385 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 21:35:29,386 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [12, 12, 2, 2, 2, 1, 1, 1] [2023-11-23 21:35:29,387 INFO L748 eck$LassoCheckResult]: Stem: 327#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 328#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 323#L21-3 [2023-11-23 21:35:29,388 INFO L750 eck$LassoCheckResult]: Loop: 323#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 324#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 348#L23-3 assume !!(main_~c~0#1 < 6); 347#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 346#L23-3 assume !!(main_~c~0#1 < 6); 345#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 344#L23-3 assume !!(main_~c~0#1 < 6); 343#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 342#L23-3 assume !!(main_~c~0#1 < 6); 341#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 340#L23-3 assume !!(main_~c~0#1 < 6); 339#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 338#L23-3 assume !!(main_~c~0#1 < 6); 337#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 336#L23-3 assume !(main_~c~0#1 < 6); 333#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 330#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 331#L23-3 assume !!(main_~c~0#1 < 6); 325#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 326#L23-3 assume !!(main_~c~0#1 < 6); 329#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 357#L23-3 assume !!(main_~c~0#1 < 6); 356#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 355#L23-3 assume !!(main_~c~0#1 < 6); 354#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 353#L23-3 assume !!(main_~c~0#1 < 6); 352#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 351#L23-3 assume !!(main_~c~0#1 < 6); 350#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 349#L23-3 assume !(main_~c~0#1 < 6); 335#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 334#L22-3 assume !(main_~b~0#1 < 6); 332#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 323#L21-3 [2023-11-23 21:35:29,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2023-11-23 21:35:29,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:29,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73403068] [2023-11-23 21:35:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:29,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:29,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:29,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:29,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:29,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1010871677, now seen corresponding path program 3 times [2023-11-23 21:35:29,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:29,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93006224] [2023-11-23 21:35:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:29,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-23 21:35:29,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:29,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93006224] [2023-11-23 21:35:29,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93006224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:35:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823215885] [2023-11-23 21:35:29,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:35:29,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:35:29,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:29,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:35:29,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:35:29,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-11-23 21:35:29,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:35:29,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:35:29,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-23 21:35:29,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:35:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-23 21:35:29,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823215885] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:35:29,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:35:29,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-23 21:35:29,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148371398] [2023-11-23 21:35:29,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:35:29,925 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 21:35:29,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:29,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:35:29,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:35:29,926 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. cyclomatic complexity: 4 Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 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) [2023-11-23 21:35:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:29,977 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2023-11-23 21:35:29,977 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 95 states and 102 transitions. [2023-11-23 21:35:29,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 93 [2023-11-23 21:35:29,993 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 95 states to 95 states and 102 transitions. [2023-11-23 21:35:29,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2023-11-23 21:35:29,996 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2023-11-23 21:35:29,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 102 transitions. [2023-11-23 21:35:29,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:29,998 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 102 transitions. [2023-11-23 21:35:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 102 transitions. [2023-11-23 21:35:30,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-23 21:35:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 95 states have (on average 1.0736842105263158) internal successors, (102), 94 states have internal predecessors, (102), 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) [2023-11-23 21:35:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2023-11-23 21:35:30,009 INFO L240 hiAutomatonCegarLoop]: Abstraction has 95 states and 102 transitions. [2023-11-23 21:35:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:35:30,011 INFO L428 stractBuchiCegarLoop]: Abstraction has 95 states and 102 transitions. [2023-11-23 21:35:30,011 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-23 21:35:30,011 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 95 states and 102 transitions. [2023-11-23 21:35:30,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 93 [2023-11-23 21:35:30,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:30,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:30,015 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 21:35:30,015 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [36, 36, 6, 6, 6, 1, 1, 1] [2023-11-23 21:35:30,016 INFO L748 eck$LassoCheckResult]: Stem: 660#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 661#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 656#L21-3 [2023-11-23 21:35:30,016 INFO L750 eck$LassoCheckResult]: Loop: 656#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 657#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 662#L23-3 assume !!(main_~c~0#1 < 6); 658#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 659#L23-3 assume !!(main_~c~0#1 < 6); 747#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 745#L23-3 assume !!(main_~c~0#1 < 6); 743#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 741#L23-3 assume !!(main_~c~0#1 < 6); 739#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 737#L23-3 assume !!(main_~c~0#1 < 6); 735#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 733#L23-3 assume !!(main_~c~0#1 < 6); 731#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 730#L23-3 assume !(main_~c~0#1 < 6); 664#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 665#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 750#L23-3 assume !!(main_~c~0#1 < 6); 749#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 748#L23-3 assume !!(main_~c~0#1 < 6); 746#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 744#L23-3 assume !!(main_~c~0#1 < 6); 742#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 740#L23-3 assume !!(main_~c~0#1 < 6); 738#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 736#L23-3 assume !!(main_~c~0#1 < 6); 734#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 732#L23-3 assume !!(main_~c~0#1 < 6); 729#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 728#L23-3 assume !(main_~c~0#1 < 6); 727#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 726#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 725#L23-3 assume !!(main_~c~0#1 < 6); 724#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 723#L23-3 assume !!(main_~c~0#1 < 6); 722#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 721#L23-3 assume !!(main_~c~0#1 < 6); 720#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 719#L23-3 assume !!(main_~c~0#1 < 6); 718#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 717#L23-3 assume !!(main_~c~0#1 < 6); 716#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 715#L23-3 assume !!(main_~c~0#1 < 6); 714#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 713#L23-3 assume !(main_~c~0#1 < 6); 712#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 711#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 710#L23-3 assume !!(main_~c~0#1 < 6); 709#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 708#L23-3 assume !!(main_~c~0#1 < 6); 707#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 706#L23-3 assume !!(main_~c~0#1 < 6); 705#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 704#L23-3 assume !!(main_~c~0#1 < 6); 703#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 702#L23-3 assume !!(main_~c~0#1 < 6); 701#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 700#L23-3 assume !!(main_~c~0#1 < 6); 699#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 698#L23-3 assume !(main_~c~0#1 < 6); 697#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 696#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 695#L23-3 assume !!(main_~c~0#1 < 6); 694#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 693#L23-3 assume !!(main_~c~0#1 < 6); 692#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 691#L23-3 assume !!(main_~c~0#1 < 6); 690#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 689#L23-3 assume !!(main_~c~0#1 < 6); 688#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 687#L23-3 assume !!(main_~c~0#1 < 6); 686#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 685#L23-3 assume !!(main_~c~0#1 < 6); 684#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 683#L23-3 assume !(main_~c~0#1 < 6); 682#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 681#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 667#L23-3 assume !!(main_~c~0#1 < 6); 680#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 679#L23-3 assume !!(main_~c~0#1 < 6); 678#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 677#L23-3 assume !!(main_~c~0#1 < 6); 676#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 675#L23-3 assume !!(main_~c~0#1 < 6); 674#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 673#L23-3 assume !!(main_~c~0#1 < 6); 672#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 671#L23-3 assume !!(main_~c~0#1 < 6); 670#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 669#L23-3 assume !(main_~c~0#1 < 6); 668#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 666#L22-3 assume !(main_~b~0#1 < 6); 663#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 656#L21-3 [2023-11-23 21:35:30,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:30,017 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2023-11-23 21:35:30,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:30,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669632068] [2023-11-23 21:35:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:30,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:30,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:30,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:30,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:30,030 INFO L85 PathProgramCache]: Analyzing trace with hash -655757187, now seen corresponding path program 4 times [2023-11-23 21:35:30,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:30,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984878229] [2023-11-23 21:35:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:30,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:30,102 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:30,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:30,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:30,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1993610245, now seen corresponding path program 1 times [2023-11-23 21:35:30,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:30,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067257256] [2023-11-23 21:35:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:30,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:30,247 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:30,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:31,495 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 21:35:31,496 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 21:35:31,496 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 21:35:31,496 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 21:35:31,496 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 21:35:31,496 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:31,496 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 21:35:31,497 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 21:35:31,497 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration6_Loop [2023-11-23 21:35:31,497 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 21:35:31,497 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 21:35:31,517 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,527 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,530 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,533 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,540 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,544 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,602 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 21:35:31,602 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 21:35:31,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:31,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:31,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:31,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 21:35:31,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:31,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-23 21:35:31,658 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 21:35:31,658 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre5#1=0} Honda state: {ULTIMATE.start_main_#t~pre5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 21:35:31,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:31,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:31,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:31,697 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:31,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-23 21:35:31,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 21:35:31,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:31,726 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 21:35:31,726 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre6#1=0} Honda state: {ULTIMATE.start_main_#t~pre6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 21:35:31,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:31,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:31,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:31,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:31,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-23 21:35:31,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 21:35:31,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:31,794 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 21:35:31,794 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre4#1=0} Honda state: {ULTIMATE.start_main_#t~pre4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 21:35:31,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:31,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:31,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:31,820 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:31,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-23 21:35:31,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 21:35:31,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:31,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:31,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:31,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:31,854 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:31,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-23 21:35:31,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 21:35:31,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:31,919 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 21:35:31,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:31,930 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 21:35:31,930 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 21:35:31,930 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 21:35:31,930 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 21:35:31,931 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 21:35:31,931 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:31,931 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 21:35:31,931 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 21:35:31,931 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration6_Loop [2023-11-23 21:35:31,931 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 21:35:31,931 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 21:35:31,933 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,937 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,941 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,945 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,949 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:31,952 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:32,013 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 21:35:32,019 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 21:35:32,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:32,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:32,022 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:32,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-23 21:35:32,033 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 [2023-11-23 21:35:32,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:32,049 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:32,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:32,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:32,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:32,053 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:32,053 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:32,067 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 21:35:32,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:32,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:32,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:32,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:32,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-23 21:35:32,092 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 [2023-11-23 21:35:32,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:32,104 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:32,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:32,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:32,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:32,111 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:32,111 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:32,122 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 21:35:32,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:32,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:32,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:32,139 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:32,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-23 21:35:32,142 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 [2023-11-23 21:35:32,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:32,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:32,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:32,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:32,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:32,156 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:32,156 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:32,179 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 21:35:32,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:32,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:32,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:32,198 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:32,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-23 21:35:32,200 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 [2023-11-23 21:35:32,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:32,211 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:32,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:32,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:32,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:32,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:32,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:32,214 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 21:35:32,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-11-23 21:35:32,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:32,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:32,232 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:32,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-23 21:35:32,236 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 [2023-11-23 21:35:32,247 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:32,247 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:32,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:32,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:32,248 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:32,248 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:32,248 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:32,258 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 21:35:32,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:32,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:32,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:32,279 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:32,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-23 21:35:32,282 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 [2023-11-23 21:35:32,294 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:32,294 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:32,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:32,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:32,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:32,296 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:32,296 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:32,320 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 21:35:32,323 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 21:35:32,323 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-23 21:35:32,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:32,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:32,326 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:32,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-23 21:35:32,331 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 21:35:32,331 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 21:35:32,331 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 21:35:32,332 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = -2*ULTIMATE.start_main_~a~0#1 + 11 Supporting invariants [] [2023-11-23 21:35:32,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:32,351 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 21:35:32,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:32,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:35:32,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:32,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:35:32,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2023-11-23 21:35:33,053 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 [2023-11-23 21:35:33,055 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 95 states and 102 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-11-23 21:35:33,107 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 95 states and 102 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) Result 188 states and 203 transitions. Complement of second has 4 states. [2023-11-23 21:35:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-23 21:35:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-11-23 21:35:33,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-11-23 21:35:33,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 93 letters. [2023-11-23 21:35:33,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:33,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 95 letters. Loop has 93 letters. [2023-11-23 21:35:33,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:33,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 186 letters. [2023-11-23 21:35:33,120 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:33,120 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 188 states and 203 transitions. [2023-11-23 21:35:33,128 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 25 [2023-11-23 21:35:33,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 188 states to 187 states and 202 transitions. [2023-11-23 21:35:33,134 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 93 [2023-11-23 21:35:33,135 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2023-11-23 21:35:33,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 202 transitions. [2023-11-23 21:35:33,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 21:35:33,135 INFO L218 hiAutomatonCegarLoop]: Abstraction has 187 states and 202 transitions. [2023-11-23 21:35:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states and 202 transitions. [2023-11-23 21:35:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 111. [2023-11-23 21:35:33,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 111 states have (on average 1.09009009009009) internal successors, (121), 110 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) [2023-11-23 21:35:33,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2023-11-23 21:35:33,147 INFO L240 hiAutomatonCegarLoop]: Abstraction has 111 states and 121 transitions. [2023-11-23 21:35:33,147 INFO L428 stractBuchiCegarLoop]: Abstraction has 111 states and 121 transitions. [2023-11-23 21:35:33,147 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-23 21:35:33,147 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 121 transitions. [2023-11-23 21:35:33,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2023-11-23 21:35:33,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:33,148 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:33,149 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-23 21:35:33,149 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 6, 1, 1, 1] [2023-11-23 21:35:33,149 INFO L748 eck$LassoCheckResult]: Stem: 1251#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1252#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 1243#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 1245#L22-3 [2023-11-23 21:35:33,149 INFO L750 eck$LassoCheckResult]: Loop: 1245#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 1253#L23-3 assume !!(main_~c~0#1 < 6); 1247#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1248#L23-3 assume !!(main_~c~0#1 < 6); 1353#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1352#L23-3 assume !!(main_~c~0#1 < 6); 1351#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1350#L23-3 assume !!(main_~c~0#1 < 6); 1349#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1348#L23-3 assume !!(main_~c~0#1 < 6); 1347#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1346#L23-3 assume !!(main_~c~0#1 < 6); 1345#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1344#L23-3 assume !(main_~c~0#1 < 6); 1257#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 1245#L22-3 [2023-11-23 21:35:33,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:33,150 INFO L85 PathProgramCache]: Analyzing trace with hash 29863, now seen corresponding path program 1 times [2023-11-23 21:35:33,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:33,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578649743] [2023-11-23 21:35:33,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:33,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:33,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:33,168 INFO L85 PathProgramCache]: Analyzing trace with hash -706979195, now seen corresponding path program 1 times [2023-11-23 21:35:33,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:33,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000968857] [2023-11-23 21:35:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,187 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:33,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash 855328031, now seen corresponding path program 1 times [2023-11-23 21:35:33,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:33,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235679387] [2023-11-23 21:35:33,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:33,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,206 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:33,295 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 21:35:33,295 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 21:35:33,295 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 21:35:33,295 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 21:35:33,295 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 21:35:33,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:33,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 21:35:33,296 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 21:35:33,296 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration7_Loop [2023-11-23 21:35:33,296 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 21:35:33,296 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 21:35:33,298 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:33,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:33,331 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:33,333 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:33,336 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:33,368 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 21:35:33,368 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 21:35:33,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:33,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:33,371 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:33,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 21:35:33,386 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:33,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-23 21:35:33,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:33,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:33,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:33,445 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:33,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 21:35:33,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:33,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-23 21:35:33,498 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 21:35:33,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:33,508 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 21:35:33,508 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 21:35:33,508 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 21:35:33,508 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 21:35:33,508 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 21:35:33,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:33,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 21:35:33,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 21:35:33,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration7_Loop [2023-11-23 21:35:33,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 21:35:33,509 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 21:35:33,509 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:33,516 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:33,518 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:33,521 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:33,557 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 21:35:33,557 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 21:35:33,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:33,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:33,559 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:33,566 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-23 21:35:33,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:33,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:33,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:33,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:33,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:33,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:33,580 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:33,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-23 21:35:33,595 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 21:35:33,597 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 21:35:33,597 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-23 21:35:33,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:33,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:33,599 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:33,611 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 21:35:33,611 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 21:35:33,611 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 21:35:33,611 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0#1) = -2*ULTIMATE.start_main_~b~0#1 + 11 Supporting invariants [] [2023-11-23 21:35:33,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-23 21:35:33,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:33,631 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 21:35:33,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:33,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:35:33,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:33,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:35:33,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 21:35:33,733 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 [2023-11-23 21:35:33,733 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 121 transitions. cyclomatic complexity: 12 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-23 21:35:33,772 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 121 transitions. cyclomatic complexity: 12. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 320 states and 348 transitions. Complement of second has 7 states. [2023-11-23 21:35:33,773 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 [2023-11-23 21:35:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-23 21:35:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-11-23 21:35:33,777 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 15 letters. [2023-11-23 21:35:33,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:33,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 18 letters. Loop has 15 letters. [2023-11-23 21:35:33,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:33,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 30 letters. [2023-11-23 21:35:33,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:33,781 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 320 states and 348 transitions. [2023-11-23 21:35:33,789 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2023-11-23 21:35:33,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 320 states to 233 states and 254 transitions. [2023-11-23 21:35:33,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2023-11-23 21:35:33,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2023-11-23 21:35:33,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 233 states and 254 transitions. [2023-11-23 21:35:33,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 21:35:33,795 INFO L218 hiAutomatonCegarLoop]: Abstraction has 233 states and 254 transitions. [2023-11-23 21:35:33,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states and 254 transitions. [2023-11-23 21:35:33,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 129. [2023-11-23 21:35:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 129 states have (on average 1.1007751937984496) internal successors, (142), 128 states have internal predecessors, (142), 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) [2023-11-23 21:35:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2023-11-23 21:35:33,812 INFO L240 hiAutomatonCegarLoop]: Abstraction has 129 states and 142 transitions. [2023-11-23 21:35:33,812 INFO L428 stractBuchiCegarLoop]: Abstraction has 129 states and 142 transitions. [2023-11-23 21:35:33,813 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-23 21:35:33,813 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 142 transitions. [2023-11-23 21:35:33,814 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2023-11-23 21:35:33,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:33,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:33,814 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-23 21:35:33,814 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-23 21:35:33,815 INFO L748 eck$LassoCheckResult]: Stem: 1760#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1761#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 1751#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 1753#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 1757#L23-3 [2023-11-23 21:35:33,815 INFO L750 eck$LassoCheckResult]: Loop: 1757#L23-3 assume !!(main_~c~0#1 < 6); 1756#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1757#L23-3 [2023-11-23 21:35:33,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash 925771, now seen corresponding path program 1 times [2023-11-23 21:35:33,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:33,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313421806] [2023-11-23 21:35:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:33,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,826 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:33,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:33,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1795, now seen corresponding path program 1 times [2023-11-23 21:35:33,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:33,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733268171] [2023-11-23 21:35:33,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:33,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,832 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:33,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:33,833 INFO L85 PathProgramCache]: Analyzing trace with hash 889666765, now seen corresponding path program 1 times [2023-11-23 21:35:33,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:33,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85452464] [2023-11-23 21:35:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:33,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,845 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:33,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:33,872 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 21:35:33,872 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 21:35:33,872 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 21:35:33,872 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 21:35:33,872 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 21:35:33,872 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:33,873 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 21:35:33,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 21:35:33,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration8_Loop [2023-11-23 21:35:33,873 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 21:35:33,873 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 21:35:33,874 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:33,877 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:33,906 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 21:35:33,906 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 21:35:33,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:33,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:33,907 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:33,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 21:35:33,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:33,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-23 21:35:33,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 21:35:33,951 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre6#1=0} Honda state: {ULTIMATE.start_main_#t~pre6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 21:35:33,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:33,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:33,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:33,974 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:33,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 21:35:33,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:33,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-23 21:35:34,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:34,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:34,028 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:34,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 21:35:34,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:34,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-23 21:35:34,091 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 21:35:34,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:34,101 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 21:35:34,101 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 21:35:34,102 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 21:35:34,102 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 21:35:34,102 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 21:35:34,102 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,102 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 21:35:34,102 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 21:35:34,102 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration8_Loop [2023-11-23 21:35:34,102 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 21:35:34,102 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 21:35:34,103 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:34,110 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:34,132 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 21:35:34,132 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 21:35:34,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:34,134 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:34,137 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 [2023-11-23 21:35:34,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-23 21:35:34,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:34,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:34,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:34,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:34,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:34,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:34,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:34,163 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 21:35:34,165 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 21:35:34,165 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-23 21:35:34,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:34,168 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:34,170 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 21:35:34,170 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 21:35:34,170 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 21:35:34,170 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0#1) = -2*ULTIMATE.start_main_~c~0#1 + 11 Supporting invariants [] [2023-11-23 21:35:34,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-23 21:35:34,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:34,196 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 21:35:34,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:34,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:35:34,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:34,231 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:35:34,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:34,248 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 [2023-11-23 21:35:34,248 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 129 states and 142 transitions. cyclomatic complexity: 17 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-11-23 21:35:34,274 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 129 states and 142 transitions. cyclomatic complexity: 17. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 180 states and 199 transitions. Complement of second has 7 states. [2023-11-23 21:35:34,274 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 [2023-11-23 21:35:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-11-23 21:35:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2023-11-23 21:35:34,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-23 21:35:34,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:34,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2023-11-23 21:35:34,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:34,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2023-11-23 21:35:34,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:34,280 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 199 transitions. [2023-11-23 21:35:34,282 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2023-11-23 21:35:34,284 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 160 states and 175 transitions. [2023-11-23 21:35:34,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2023-11-23 21:35:34,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2023-11-23 21:35:34,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 175 transitions. [2023-11-23 21:35:34,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 21:35:34,290 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 175 transitions. [2023-11-23 21:35:34,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 175 transitions. [2023-11-23 21:35:34,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 129. [2023-11-23 21:35:34,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 128 states have internal predecessors, (141), 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) [2023-11-23 21:35:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2023-11-23 21:35:34,308 INFO L240 hiAutomatonCegarLoop]: Abstraction has 129 states and 141 transitions. [2023-11-23 21:35:34,308 INFO L428 stractBuchiCegarLoop]: Abstraction has 129 states and 141 transitions. [2023-11-23 21:35:34,308 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-23 21:35:34,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 141 transitions. [2023-11-23 21:35:34,309 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2023-11-23 21:35:34,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:34,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:34,310 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 2, 1, 1, 1, 1, 1] [2023-11-23 21:35:34,310 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-23 21:35:34,310 INFO L748 eck$LassoCheckResult]: Stem: 2110#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 2111#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 2101#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 2103#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 2112#L23-3 assume !!(main_~c~0#1 < 6); 2108#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2109#L23-3 assume !!(main_~c~0#1 < 6); 2228#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2226#L23-3 assume !!(main_~c~0#1 < 6); 2224#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2222#L23-3 assume !!(main_~c~0#1 < 6); 2220#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2218#L23-3 assume !!(main_~c~0#1 < 6); 2216#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2214#L23-3 assume !!(main_~c~0#1 < 6); 2211#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2210#L23-3 assume !(main_~c~0#1 < 6); 2207#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 2147#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 2107#L23-3 [2023-11-23 21:35:34,311 INFO L750 eck$LassoCheckResult]: Loop: 2107#L23-3 assume !!(main_~c~0#1 < 6); 2106#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2107#L23-3 [2023-11-23 21:35:34,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:34,311 INFO L85 PathProgramCache]: Analyzing trace with hash 745365203, now seen corresponding path program 2 times [2023-11-23 21:35:34,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:34,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011137770] [2023-11-23 21:35:34,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:34,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:34,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:34,326 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:34,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1795, now seen corresponding path program 2 times [2023-11-23 21:35:34,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:34,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395159575] [2023-11-23 21:35:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:34,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:34,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:34,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:34,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash -963577515, now seen corresponding path program 3 times [2023-11-23 21:35:34,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:34,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858766735] [2023-11-23 21:35:34,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:34,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:34,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:34,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:34,362 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 21:35:34,362 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 21:35:34,363 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 21:35:34,363 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 21:35:34,363 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 21:35:34,363 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,363 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 21:35:34,363 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 21:35:34,363 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration9_Loop [2023-11-23 21:35:34,363 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 21:35:34,364 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 21:35:34,364 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:34,367 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:34,387 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 21:35:34,387 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 21:35:34,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:34,389 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:34,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-23 21:35:34,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 21:35:34,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:34,417 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 21:35:34,417 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre6#1=0} Honda state: {ULTIMATE.start_main_#t~pre6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 21:35:34,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:34,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:34,444 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:34,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 21:35:34,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:34,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-23 21:35:34,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:34,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:34,499 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:34,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 21:35:34,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:34,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-23 21:35:34,552 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 21:35:34,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:34,561 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 21:35:34,561 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 21:35:34,561 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 21:35:34,561 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 21:35:34,561 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 21:35:34,561 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,562 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 21:35:34,562 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 21:35:34,562 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration9_Loop [2023-11-23 21:35:34,562 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 21:35:34,562 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 21:35:34,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:34,565 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:34,587 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 21:35:34,588 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 21:35:34,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:34,591 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:34,594 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 [2023-11-23 21:35:34,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:34,607 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:34,607 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:34,607 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:34,607 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:34,608 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:34,608 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:34,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-23 21:35:34,617 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 21:35:34,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:34,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:34,642 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:34,645 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 [2023-11-23 21:35:34,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-23 21:35:34,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:34,658 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:34,658 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:34,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:34,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:34,660 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:34,660 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:34,675 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 21:35:34,678 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 21:35:34,678 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-23 21:35:34,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:34,679 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:34,681 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 21:35:34,681 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 21:35:34,681 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 21:35:34,681 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0#1) = -2*ULTIMATE.start_main_~c~0#1 + 11 Supporting invariants [] [2023-11-23 21:35:34,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-23 21:35:34,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-23 21:35:34,694 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 21:35:34,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:34,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:35:34,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:34,771 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:35:34,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:34,789 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 [2023-11-23 21:35:34,789 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-23 21:35:34,819 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 176 states and 193 transitions. Complement of second has 7 states. [2023-11-23 21:35:34,820 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 [2023-11-23 21:35:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-23 21:35:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2023-11-23 21:35:34,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 19 letters. Loop has 2 letters. [2023-11-23 21:35:34,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:34,823 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 21:35:34,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:34,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:35:34,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:34,886 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:35:34,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:34,903 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 [2023-11-23 21:35:34,903 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-23 21:35:34,925 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 176 states and 193 transitions. Complement of second has 7 states. [2023-11-23 21:35:34,926 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 [2023-11-23 21:35:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-23 21:35:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2023-11-23 21:35:34,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 19 letters. Loop has 2 letters. [2023-11-23 21:35:34,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:34,928 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 21:35:34,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:34,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:35:34,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:34,988 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:35:34,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:35,004 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 [2023-11-23 21:35:35,004 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-23 21:35:35,031 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 200 states and 221 transitions. Complement of second has 6 states. [2023-11-23 21:35:35,032 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 [2023-11-23 21:35:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-23 21:35:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2023-11-23 21:35:35,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2023-11-23 21:35:35,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:35,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 2 letters. [2023-11-23 21:35:35,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:35,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 4 letters. [2023-11-23 21:35:35,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:35,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 221 transitions. [2023-11-23 21:35:35,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2023-11-23 21:35:35,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 112 states and 121 transitions. [2023-11-23 21:35:35,040 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-23 21:35:35,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-23 21:35:35,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 121 transitions. [2023-11-23 21:35:35,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 21:35:35,041 INFO L218 hiAutomatonCegarLoop]: Abstraction has 112 states and 121 transitions. [2023-11-23 21:35:35,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states and 121 transitions. [2023-11-23 21:35:35,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2023-11-23 21:35:35,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 111 states have (on average 1.0810810810810811) internal successors, (120), 110 states have internal predecessors, (120), 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) [2023-11-23 21:35:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2023-11-23 21:35:35,056 INFO L240 hiAutomatonCegarLoop]: Abstraction has 111 states and 120 transitions. [2023-11-23 21:35:35,056 INFO L428 stractBuchiCegarLoop]: Abstraction has 111 states and 120 transitions. [2023-11-23 21:35:35,056 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-23 21:35:35,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 120 transitions. [2023-11-23 21:35:35,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2023-11-23 21:35:35,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:35:35,058 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:35:35,063 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [36, 36, 6, 6, 6, 2, 1, 1, 1, 1] [2023-11-23 21:35:35,063 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 6, 1, 1, 1] [2023-11-23 21:35:35,066 INFO L748 eck$LassoCheckResult]: Stem: 3015#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 3016#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 3009#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 3010#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3119#L23-3 assume !!(main_~c~0#1 < 6); 3118#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3117#L23-3 assume !!(main_~c~0#1 < 6); 3115#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3113#L23-3 assume !!(main_~c~0#1 < 6); 3111#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3109#L23-3 assume !!(main_~c~0#1 < 6); 3107#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3105#L23-3 assume !!(main_~c~0#1 < 6); 3103#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3101#L23-3 assume !!(main_~c~0#1 < 6); 3098#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3097#L23-3 assume !(main_~c~0#1 < 6); 3023#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3020#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3019#L23-3 assume !!(main_~c~0#1 < 6); 3013#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3014#L23-3 assume !!(main_~c~0#1 < 6); 3116#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3114#L23-3 assume !!(main_~c~0#1 < 6); 3112#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3110#L23-3 assume !!(main_~c~0#1 < 6); 3108#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3106#L23-3 assume !!(main_~c~0#1 < 6); 3104#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3102#L23-3 assume !!(main_~c~0#1 < 6); 3100#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3099#L23-3 assume !(main_~c~0#1 < 6); 3096#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3095#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3094#L23-3 assume !!(main_~c~0#1 < 6); 3093#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3092#L23-3 assume !!(main_~c~0#1 < 6); 3091#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3090#L23-3 assume !!(main_~c~0#1 < 6); 3089#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3088#L23-3 assume !!(main_~c~0#1 < 6); 3087#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3086#L23-3 assume !!(main_~c~0#1 < 6); 3085#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3084#L23-3 assume !!(main_~c~0#1 < 6); 3083#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3082#L23-3 assume !(main_~c~0#1 < 6); 3081#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3080#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3079#L23-3 assume !!(main_~c~0#1 < 6); 3078#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3077#L23-3 assume !!(main_~c~0#1 < 6); 3076#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3075#L23-3 assume !!(main_~c~0#1 < 6); 3074#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3073#L23-3 assume !!(main_~c~0#1 < 6); 3072#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3071#L23-3 assume !!(main_~c~0#1 < 6); 3070#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3069#L23-3 assume !!(main_~c~0#1 < 6); 3068#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3067#L23-3 assume !(main_~c~0#1 < 6); 3066#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3065#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3064#L23-3 assume !!(main_~c~0#1 < 6); 3063#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3062#L23-3 assume !!(main_~c~0#1 < 6); 3061#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3060#L23-3 assume !!(main_~c~0#1 < 6); 3059#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3058#L23-3 assume !!(main_~c~0#1 < 6); 3057#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3056#L23-3 assume !!(main_~c~0#1 < 6); 3055#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3054#L23-3 assume !!(main_~c~0#1 < 6); 3053#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3052#L23-3 assume !(main_~c~0#1 < 6); 3051#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3050#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3027#L23-3 assume !!(main_~c~0#1 < 6); 3049#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3048#L23-3 assume !!(main_~c~0#1 < 6); 3047#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3046#L23-3 assume !!(main_~c~0#1 < 6); 3044#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3042#L23-3 assume !!(main_~c~0#1 < 6); 3040#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3038#L23-3 assume !!(main_~c~0#1 < 6); 3036#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3034#L23-3 assume !!(main_~c~0#1 < 6); 3031#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3030#L23-3 assume !(main_~c~0#1 < 6); 3028#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3026#L22-3 assume !(main_~b~0#1 < 6); 3021#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 3011#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 3012#L22-3 [2023-11-23 21:35:35,066 INFO L750 eck$LassoCheckResult]: Loop: 3012#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3017#L23-3 assume !!(main_~c~0#1 < 6); 3018#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3045#L23-3 assume !!(main_~c~0#1 < 6); 3043#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3041#L23-3 assume !!(main_~c~0#1 < 6); 3039#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3037#L23-3 assume !!(main_~c~0#1 < 6); 3035#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3033#L23-3 assume !!(main_~c~0#1 < 6); 3032#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3029#L23-3 assume !!(main_~c~0#1 < 6); 3025#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3024#L23-3 assume !(main_~c~0#1 < 6); 3022#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3012#L22-3 [2023-11-23 21:35:35,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1672375441, now seen corresponding path program 2 times [2023-11-23 21:35:35,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:35,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685467323] [2023-11-23 21:35:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:35,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:35,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:35,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:35,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash -706979195, now seen corresponding path program 2 times [2023-11-23 21:35:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:35,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639040005] [2023-11-23 21:35:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:35,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:35,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:35,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:35,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1669350057, now seen corresponding path program 3 times [2023-11-23 21:35:35,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:35,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833312344] [2023-11-23 21:35:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:35,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:35,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:35,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:35,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:35,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:35,351 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 21:35:35,352 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 21:35:35,352 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 21:35:35,352 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 21:35:35,352 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 21:35:35,352 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:35,352 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 21:35:35,352 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 21:35:35,353 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration10_Loop [2023-11-23 21:35:35,353 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 21:35:35,353 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 21:35:35,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:35,362 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:35,364 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:35,368 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:35,503 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 21:35:35,503 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 21:35:35,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:35,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:35,504 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:35,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 21:35:35,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:35,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-23 21:35:35,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:35,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:35,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:35,563 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:35,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 21:35:35,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 21:35:35,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-23 21:35:35,601 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 21:35:35,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:35,604 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 21:35:35,604 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 21:35:35,604 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 21:35:35,604 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 21:35:35,604 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 21:35:35,604 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:35,604 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 21:35:35,605 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 21:35:35,605 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration10_Loop [2023-11-23 21:35:35,605 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 21:35:35,605 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 21:35:35,605 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:35,611 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:35,613 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:35,620 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 21:35:35,656 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 21:35:35,656 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 21:35:35,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:35,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:35,658 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:35,665 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 [2023-11-23 21:35:35,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-23 21:35:35,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 21:35:35,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 21:35:35,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 21:35:35,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 21:35:35,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 21:35:35,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 21:35:35,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 21:35:35,693 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 21:35:35,696 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 21:35:35,696 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-23 21:35:35,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:35:35,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:35,698 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:35,706 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 21:35:35,706 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 21:35:35,706 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 21:35:35,706 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0#1) = -2*ULTIMATE.start_main_~b~0#1 + 11 Supporting invariants [] [2023-11-23 21:35:35,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-23 21:35:35,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2023-11-23 21:35:35,728 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 21:35:35,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:35,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:35:35,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:35,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:35:35,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 21:35:36,075 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 [2023-11-23 21:35:36,075 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-23 21:35:36,098 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 290 states and 314 transitions. Complement of second has 7 states. [2023-11-23 21:35:36,098 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 [2023-11-23 21:35:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-23 21:35:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-11-23 21:35:36,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 96 letters. Loop has 15 letters. [2023-11-23 21:35:36,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:36,100 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 21:35:36,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:36,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:35:36,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:36,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:35:36,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 21:35:36,337 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 [2023-11-23 21:35:36,337 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-23 21:35:36,356 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 290 states and 314 transitions. Complement of second has 7 states. [2023-11-23 21:35:36,357 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 [2023-11-23 21:35:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-23 21:35:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-11-23 21:35:36,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 96 letters. Loop has 15 letters. [2023-11-23 21:35:36,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:36,358 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 21:35:36,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:36,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:35:36,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:36,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:35:36,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 21:35:36,626 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 [2023-11-23 21:35:36,626 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-23 21:35:36,651 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 212 states and 230 transitions. Complement of second has 6 states. [2023-11-23 21:35:36,652 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 [2023-11-23 21:35:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-23 21:35:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2023-11-23 21:35:36,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 96 letters. Loop has 15 letters. [2023-11-23 21:35:36,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:36,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 111 letters. Loop has 15 letters. [2023-11-23 21:35:36,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:36,655 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 96 letters. Loop has 30 letters. [2023-11-23 21:35:36,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 21:35:36,656 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 212 states and 230 transitions. [2023-11-23 21:35:36,659 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-23 21:35:36,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 212 states to 0 states and 0 transitions. [2023-11-23 21:35:36,659 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-23 21:35:36,659 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-23 21:35:36,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-23 21:35:36,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:36,660 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:35:36,660 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:35:36,660 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:35:36,660 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-23 21:35:36,660 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:35:36,661 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-23 21:35:36,661 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-23 21:35:36,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 09:35:36 BoogieIcfgContainer [2023-11-23 21:35:36,670 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-23 21:35:36,671 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:35:36,671 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:35:36,671 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:35:36,672 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:27" (3/4) ... [2023-11-23 21:35:36,674 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:35:36,675 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:35:36,676 INFO L158 Benchmark]: Toolchain (without parser) took 9922.97ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 130.7MB in the beginning and 68.9MB in the end (delta: 61.9MB). Peak memory consumption was 97.5MB. Max. memory is 16.1GB. [2023-11-23 21:35:36,677 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:35:36,677 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.40ms. Allocated memory is still 161.5MB. Free memory was 130.7MB in the beginning and 120.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:35:36,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.63ms. Allocated memory is still 161.5MB. Free memory was 120.8MB in the beginning and 119.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:35:36,678 INFO L158 Benchmark]: Boogie Preprocessor took 37.21ms. Allocated memory is still 161.5MB. Free memory was 119.5MB in the beginning and 117.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:35:36,678 INFO L158 Benchmark]: RCFGBuilder took 449.28ms. Allocated memory is still 161.5MB. Free memory was 117.4MB in the beginning and 108.3MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:35:36,679 INFO L158 Benchmark]: BuchiAutomizer took 9115.88ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 108.3MB in the beginning and 68.9MB in the end (delta: 39.5MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2023-11-23 21:35:36,679 INFO L158 Benchmark]: Witness Printer took 4.73ms. Allocated memory is still 195.0MB. Free memory is still 68.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:35:36,681 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.40ms. Allocated memory is still 161.5MB. Free memory was 130.7MB in the beginning and 120.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.63ms. Allocated memory is still 161.5MB. Free memory was 120.8MB in the beginning and 119.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.21ms. Allocated memory is still 161.5MB. Free memory was 119.5MB in the beginning and 117.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 449.28ms. Allocated memory is still 161.5MB. Free memory was 117.4MB in the beginning and 108.3MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 9115.88ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 108.3MB in the beginning and 68.9MB in the end (delta: 39.5MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. * Witness Printer took 4.73ms. Allocated memory is still 195.0MB. Free memory is still 68.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function ((-2 * a) + 11) and consists of 3 locations. One deterministic module has affine ranking function ((-2 * b) + 11) and consists of 4 locations. One deterministic module has affine ranking function ((-2 * c) + 11) and consists of 4 locations. One nondeterministic module has affine ranking function ((-2 * c) + 11) and consists of 4 locations. One nondeterministic module has affine ranking function ((-2 * b) + 11) and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.0s and 11 iterations. TraceHistogramMax:36. Analysis of lassos took 6.0s. Construction of modules took 0.2s. Büchi inclusion checks took 2.5s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 4. Automata minimization 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 230 StatesRemovedByMinimization, 7 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 [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1599/1599 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 224 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 101 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 154 IncrementalHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 123 mSDtfsCounter, 154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI5 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp83 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-23 21:35:36,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:36,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:37,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 21:35:37,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:35:37,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba8b26a-21b1-46bf-a2ec-1f2ef9043f0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE