./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-simple/nested_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-simple/nested_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU --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 d28004f57c6988e792d07d7254dfd532aeffd19f38063d85c3bfa2c0f504914f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:03,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:03,765 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-31 22:10:03,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:03,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:03,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:03,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:03,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:03,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:03,794 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:03,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:03,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:03,796 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:03,796 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:10:03,797 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:10:03,797 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:10:03,797 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:10:03,798 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:10:03,798 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:10:03,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:03,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:10:03,806 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:03,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:03,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:03,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:03,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:10:03,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:10:03,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:10:03,808 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:03,808 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:10:03,809 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:03,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:10:03,809 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:10:03,810 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:03,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:03,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:03,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:03,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:03,815 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:10:03,815 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_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28004f57c6988e792d07d7254dfd532aeffd19f38063d85c3bfa2c0f504914f [2024-10-31 22:10:04,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:04,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:04,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:04,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:04,139 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:04,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/loop-simple/nested_2.c Unable to find full path for "g++" [2024-10-31 22:10:06,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:06,420 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:06,421 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/sv-benchmarks/c/loop-simple/nested_2.c [2024-10-31 22:10:06,429 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/data/0ae3f6873/596af68eb8764fd981a763c88ed5826c/FLAGc5e63cb8f [2024-10-31 22:10:06,783 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/data/0ae3f6873/596af68eb8764fd981a763c88ed5826c [2024-10-31 22:10:06,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:06,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:06,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:06,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:06,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:06,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:06" (1/1) ... [2024-10-31 22:10:06,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c0bae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:06, skipping insertion in model container [2024-10-31 22:10:06,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:06" (1/1) ... [2024-10-31 22:10:06,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:07,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:07,019 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:07,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:07,059 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:07,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07 WrapperNode [2024-10-31 22:10:07,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:07,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:07,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:07,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:07,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,102 INFO L138 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2024-10-31 22:10:07,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:07,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:07,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:07,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:07,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,120 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,133 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:10:07,134 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,134 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,144 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:07,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:07,148 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:07,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:07,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (1/1) ... [2024-10-31 22:10:07,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:07,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:07,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:07,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:07,347 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:07,349 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:07,510 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-31 22:10:07,511 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:07,524 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:07,525 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:10:07,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:07 BoogieIcfgContainer [2024-10-31 22:10:07,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:07,529 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:10:07,529 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:10:07,541 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:10:07,541 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:10:07,542 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:10:06" (1/3) ... [2024-10-31 22:10:07,545 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6628b63e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:10:07, skipping insertion in model container [2024-10-31 22:10:07,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:10:07,545 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:07" (2/3) ... [2024-10-31 22:10:07,550 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6628b63e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:10:07, skipping insertion in model container [2024-10-31 22:10:07,550 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:10:07,550 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:07" (3/3) ... [2024-10-31 22:10:07,552 INFO L332 chiAutomizerObserver]: Analyzing ICFG nested_2.c [2024-10-31 22:10:07,680 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:10:07,680 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:10:07,680 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:10:07,680 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:10:07,681 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:10:07,681 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:10:07,681 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:10:07,681 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:10:07,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2024-10-31 22:10:07,708 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:10:07,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:10:07,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:10:07,715 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:10:07,715 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:10:07,716 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:10:07,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2024-10-31 22:10:07,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:10:07,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:10:07,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:10:07,719 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:10:07,719 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:10:07,727 INFO L745 eck$LassoCheckResult]: Stem: 8#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre4#1, main_#t~pre5#1, main_~a~0#1, main_~b~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~a~0#1 := 0; 6#L20-3true [2024-10-31 22:10:07,729 INFO L747 eck$LassoCheckResult]: Loop: 6#L20-3true assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 3#L21-3true assume !(main_~b~0#1 < 6); 7#L20-2true main_#t~pre5#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre5#1; 6#L20-3true [2024-10-31 22:10:07,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:07,738 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-31 22:10:07,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:07,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362430233] [2024-10-31 22:10:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:07,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:07,843 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:07,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:07,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:07,873 INFO L85 PathProgramCache]: Analyzing trace with hash 39921, now seen corresponding path program 1 times [2024-10-31 22:10:07,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:07,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506485335] [2024-10-31 22:10:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:07,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:07,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:07,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506485335] [2024-10-31 22:10:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506485335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:07,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:07,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617673581] [2024-10-31 22:10:08,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:08,013 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-31 22:10:08,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:08,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:08,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:08,077 INFO L87 Difference]: Start difference. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) 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) [2024-10-31 22:10:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:08,120 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2024-10-31 22:10:08,121 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2024-10-31 22:10:08,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-31 22:10:08,132 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 8 states and 9 transitions. [2024-10-31 22:10:08,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-10-31 22:10:08,139 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-31 22:10:08,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-10-31 22:10:08,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:10:08,140 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-10-31 22:10:08,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-10-31 22:10:08,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-10-31 22:10:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2024-10-31 22:10:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-10-31 22:10:08,164 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-10-31 22:10:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:08,173 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-10-31 22:10:08,173 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:10:08,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2024-10-31 22:10:08,173 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 22:10:08,174 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:10:08,174 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:10:08,174 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:10:08,174 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2024-10-31 22:10:08,176 INFO L745 eck$LassoCheckResult]: Stem: 38#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 39#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre4#1, main_#t~pre5#1, main_~a~0#1, main_~b~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~a~0#1 := 0; 36#L20-3 [2024-10-31 22:10:08,176 INFO L747 eck$LassoCheckResult]: Loop: 36#L20-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 34#L21-3 assume !!(main_~b~0#1 < 6); 35#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 40#L21-3 assume !(main_~b~0#1 < 6); 37#L20-2 main_#t~pre5#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre5#1; 36#L20-3 [2024-10-31 22:10:08,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-10-31 22:10:08,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:08,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409068996] [2024-10-31 22:10:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:08,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:08,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:08,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:08,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash 38420339, now seen corresponding path program 1 times [2024-10-31 22:10:08,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:08,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134372261] [2024-10-31 22:10:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:08,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:08,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:08,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134372261] [2024-10-31 22:10:08,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134372261] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372822928] [2024-10-31 22:10:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:08,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:08,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:08,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:08,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:10:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:08,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:10:08,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:08,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:08,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372822928] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:08,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:08,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-31 22:10:08,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122751641] [2024-10-31 22:10:08,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:08,384 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-31 22:10:08,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:08,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:08,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:08,385 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:08,473 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2024-10-31 22:10:08,473 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2024-10-31 22:10:08,474 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2024-10-31 22:10:08,474 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2024-10-31 22:10:08,474 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-10-31 22:10:08,475 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2024-10-31 22:10:08,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2024-10-31 22:10:08,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:10:08,475 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-10-31 22:10:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2024-10-31 22:10:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-31 22:10:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-10-31 22:10:08,482 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-10-31 22:10:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:08,486 INFO L425 stractBuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-10-31 22:10:08,486 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 22:10:08,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2024-10-31 22:10:08,487 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2024-10-31 22:10:08,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:10:08,487 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:10:08,487 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:10:08,487 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 1, 1, 1] [2024-10-31 22:10:08,487 INFO L745 eck$LassoCheckResult]: Stem: 92#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre4#1, main_#t~pre5#1, main_~a~0#1, main_~b~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~a~0#1 := 0; 89#L20-3 [2024-10-31 22:10:08,487 INFO L747 eck$LassoCheckResult]: Loop: 89#L20-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 90#L21-3 assume !!(main_~b~0#1 < 6); 94#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 87#L21-3 assume !!(main_~b~0#1 < 6); 88#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 99#L21-3 assume !!(main_~b~0#1 < 6); 98#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 97#L21-3 assume !!(main_~b~0#1 < 6); 96#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 95#L21-3 assume !(main_~b~0#1 < 6); 91#L20-2 main_#t~pre5#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre5#1; 89#L20-3 [2024-10-31 22:10:08,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-10-31 22:10:08,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:08,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446870546] [2024-10-31 22:10:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:08,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:08,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:08,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:08,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:08,533 INFO L85 PathProgramCache]: Analyzing trace with hash 718182137, now seen corresponding path program 2 times [2024-10-31 22:10:08,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:08,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292078181] [2024-10-31 22:10:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:08,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:08,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:08,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292078181] [2024-10-31 22:10:08,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292078181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:08,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851734331] [2024-10-31 22:10:08,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:08,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:08,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:08,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:08,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:10:08,770 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:10:08,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:08,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:10:08,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:08,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:08,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851734331] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:08,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:08,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-10-31 22:10:08,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870301522] [2024-10-31 22:10:08,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:08,920 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-31 22:10:08,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:10:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:10:08,922 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:08,988 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-10-31 22:10:08,988 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 18 transitions. [2024-10-31 22:10:08,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2024-10-31 22:10:08,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 18 transitions. [2024-10-31 22:10:08,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2024-10-31 22:10:08,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2024-10-31 22:10:08,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2024-10-31 22:10:08,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:10:08,991 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-31 22:10:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2024-10-31 22:10:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-31 22:10:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 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) [2024-10-31 22:10:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-31 22:10:08,996 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-31 22:10:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:10:08,997 INFO L425 stractBuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-31 22:10:08,998 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 22:10:08,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 18 transitions. [2024-10-31 22:10:08,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2024-10-31 22:10:08,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:10:08,999 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:10:08,999 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:10:08,999 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 6, 1, 1, 1] [2024-10-31 22:10:09,000 INFO L745 eck$LassoCheckResult]: Stem: 193#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 194#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre4#1, main_#t~pre5#1, main_~a~0#1, main_~b~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~a~0#1 := 0; 190#L20-3 [2024-10-31 22:10:09,000 INFO L747 eck$LassoCheckResult]: Loop: 190#L20-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 191#L21-3 assume !!(main_~b~0#1 < 6); 195#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 188#L21-3 assume !!(main_~b~0#1 < 6); 189#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 204#L21-3 assume !!(main_~b~0#1 < 6); 203#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 202#L21-3 assume !!(main_~b~0#1 < 6); 201#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 200#L21-3 assume !!(main_~b~0#1 < 6); 199#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 198#L21-3 assume !!(main_~b~0#1 < 6); 197#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 196#L21-3 assume !(main_~b~0#1 < 6); 192#L20-2 main_#t~pre5#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre5#1; 190#L20-3 [2024-10-31 22:10:09,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:09,002 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-10-31 22:10:09,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:09,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916391086] [2024-10-31 22:10:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:09,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:09,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1719812477, now seen corresponding path program 3 times [2024-10-31 22:10:09,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:09,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108546773] [2024-10-31 22:10:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:09,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash 212205947, now seen corresponding path program 1 times [2024-10-31 22:10:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:09,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037420139] [2024-10-31 22:10:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,105 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:09,237 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:10:09,238 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:10:09,239 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:10:09,239 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:10:09,239 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:10:09,239 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:09,239 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:10:09,240 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:10:09,241 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration4_Loop [2024-10-31 22:10:09,243 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:10:09,243 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:10:09,271 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:09,286 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:09,293 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:09,299 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:09,353 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:10:09,354 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:10:09,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:09,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:09,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:09,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 22:10:09,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:10:09,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:10:09,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-31 22:10:09,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:09,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:09,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 22:10:09,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:10:09,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:10:09,458 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:10:09,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:09,463 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:10:09,464 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:10:09,464 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:10:09,464 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:10:09,465 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:10:09,465 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:09,465 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:10:09,465 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:10:09,465 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration4_Loop [2024-10-31 22:10:09,466 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:10:09,466 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:10:09,467 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:09,471 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:09,481 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:09,485 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:09,537 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:10:09,542 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:10:09,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:09,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:09,545 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:09,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 22:10:09,547 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 [2024-10-31 22:10:09,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:10:09,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:10:09,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:10:09,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:10:09,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:10:09,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:10:09,562 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:10:09,565 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:10:09,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-31 22:10:09,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:09,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:09,588 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:09,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 22:10:09,590 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 [2024-10-31 22:10:09,605 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:10:09,605 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:10:09,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:10:09,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:10:09,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:10:09,607 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:10:09,607 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:10:09,610 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:10:09,616 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:10:09,617 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:10:09,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:09,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:09,621 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:09,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-31 22:10:09,624 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:10:09,624 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:10:09,624 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:10:09,625 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = -2*ULTIMATE.start_main_~a~0#1 + 11 Supporting invariants [] [2024-10-31 22:10:09,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-31 22:10:09,649 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:10:09,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:09,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:10:09,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:09,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:10:09,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 22:10:09,857 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 [2024-10-31 22:10:09,858 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 18 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:09,903 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 18 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 35 transitions. Complement of second has 4 states. [2024-10-31 22:10:09,905 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 [2024-10-31 22:10:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-10-31 22:10:09,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 15 letters. [2024-10-31 22:10:09,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:09,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 17 letters. Loop has 15 letters. [2024-10-31 22:10:09,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:09,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 30 letters. [2024-10-31 22:10:09,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:09,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 35 transitions. [2024-10-31 22:10:09,916 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:10:09,917 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 31 states and 34 transitions. [2024-10-31 22:10:09,917 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-10-31 22:10:09,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-10-31 22:10:09,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 34 transitions. [2024-10-31 22:10:09,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:10:09,918 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-10-31 22:10:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 34 transitions. [2024-10-31 22:10:09,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2024-10-31 22:10:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 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) [2024-10-31 22:10:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-10-31 22:10:09,920 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-10-31 22:10:09,920 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-10-31 22:10:09,921 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-31 22:10:09,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 23 transitions. [2024-10-31 22:10:09,921 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:10:09,921 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:10:09,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:10:09,922 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 22:10:09,922 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:10:09,922 INFO L745 eck$LassoCheckResult]: Stem: 314#$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); 315#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre4#1, main_#t~pre5#1, main_~a~0#1, main_~b~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~a~0#1 := 0; 311#L20-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 307#L21-3 [2024-10-31 22:10:09,922 INFO L747 eck$LassoCheckResult]: Loop: 307#L21-3 assume !!(main_~b~0#1 < 6); 308#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 307#L21-3 [2024-10-31 22:10:09,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:09,923 INFO L85 PathProgramCache]: Analyzing trace with hash 29863, now seen corresponding path program 1 times [2024-10-31 22:10:09,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:09,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800455237] [2024-10-31 22:10:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:09,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:09,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1539, now seen corresponding path program 1 times [2024-10-31 22:10:09,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:09,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798148856] [2024-10-31 22:10:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:09,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:09,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:09,943 INFO L85 PathProgramCache]: Analyzing trace with hash 28698921, now seen corresponding path program 1 times [2024-10-31 22:10:09,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:09,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234157784] [2024-10-31 22:10:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:09,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,950 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:09,957 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:09,975 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:10:09,975 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:10:09,975 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:10:09,975 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:10:09,975 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:10:09,975 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:09,976 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:10:09,976 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:10:09,976 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration5_Loop [2024-10-31 22:10:09,976 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:10:09,976 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:10:09,977 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:09,991 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:10,021 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:10:10,022 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:10:10,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:10,024 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:10,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 22:10:10,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:10:10,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:10:10,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:10,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:10,057 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:10,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 22:10:10,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:10:10,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:10:10,092 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:10:10,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:10,096 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:10:10,096 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:10:10,096 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:10:10,096 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:10:10,096 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:10:10,096 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,097 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:10:10,097 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:10:10,097 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration5_Loop [2024-10-31 22:10:10,097 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:10:10,097 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:10:10,098 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:10,101 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:10,131 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:10:10,131 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:10:10,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:10,133 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:10,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 22:10:10,137 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 [2024-10-31 22:10:10,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:10:10,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:10:10,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:10:10,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:10:10,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:10:10,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:10:10,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:10:10,155 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:10:10,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-31 22:10:10,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:10,177 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:10,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-31 22:10:10,184 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 [2024-10-31 22:10:10,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:10:10,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:10:10,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:10:10,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:10:10,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:10:10,200 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:10:10,200 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:10:10,205 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:10:10,209 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:10:10,209 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:10:10,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:10,214 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:10,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 22:10:10,219 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:10:10,219 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:10:10,219 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:10:10,220 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0#1) = -2*ULTIMATE.start_main_~b~0#1 + 11 Supporting invariants [] [2024-10-31 22:10:10,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-31 22:10:10,240 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:10:10,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:10,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:10:10,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:10,300 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:10:10,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:10,321 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 [2024-10-31 22:10:10,321 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-31 22:10:10,352 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 47 states and 54 transitions. Complement of second has 7 states. [2024-10-31 22:10:10,355 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 [2024-10-31 22:10:10,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-31 22:10:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2024-10-31 22:10:10,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2024-10-31 22:10:10,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:10,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2024-10-31 22:10:10,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:10,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 4 letters. [2024-10-31 22:10:10,357 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:10,357 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 54 transitions. [2024-10-31 22:10:10,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:10:10,362 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 35 states and 39 transitions. [2024-10-31 22:10:10,362 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-10-31 22:10:10,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-10-31 22:10:10,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 39 transitions. [2024-10-31 22:10:10,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:10:10,363 INFO L218 hiAutomatonCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-10-31 22:10:10,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 39 transitions. [2024-10-31 22:10:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2024-10-31 22:10:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 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) [2024-10-31 22:10:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-10-31 22:10:10,369 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-10-31 22:10:10,369 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-10-31 22:10:10,369 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-31 22:10:10,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 22 transitions. [2024-10-31 22:10:10,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:10:10,370 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:10:10,370 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:10:10,370 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 2, 1, 1, 1, 1] [2024-10-31 22:10:10,370 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:10:10,371 INFO L745 eck$LassoCheckResult]: Stem: 420#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 421#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre4#1, main_#t~pre5#1, main_~a~0#1, main_~b~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~a~0#1 := 0; 418#L20-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 419#L21-3 assume !!(main_~b~0#1 < 6); 422#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 414#L21-3 assume !!(main_~b~0#1 < 6); 415#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 431#L21-3 assume !!(main_~b~0#1 < 6); 430#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 429#L21-3 assume !!(main_~b~0#1 < 6); 428#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 427#L21-3 assume !!(main_~b~0#1 < 6); 426#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 425#L21-3 assume !!(main_~b~0#1 < 6); 424#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 423#L21-3 assume !(main_~b~0#1 < 6); 416#L20-2 main_#t~pre5#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre5#1; 417#L20-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 412#L21-3 [2024-10-31 22:10:10,371 INFO L747 eck$LassoCheckResult]: Loop: 412#L21-3 assume !!(main_~b~0#1 < 6); 413#L21-2 main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 412#L21-3 [2024-10-31 22:10:10,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:10,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2011550225, now seen corresponding path program 2 times [2024-10-31 22:10:10,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:10,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611781546] [2024-10-31 22:10:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:10,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:10,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:10,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:10,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1539, now seen corresponding path program 2 times [2024-10-31 22:10:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:10,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504015988] [2024-10-31 22:10:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:10,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:10,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:10,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:10,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash -364482447, now seen corresponding path program 3 times [2024-10-31 22:10:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:10,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163141990] [2024-10-31 22:10:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:10,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:10,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:10,472 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:10,498 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:10:10,498 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:10:10,498 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:10:10,498 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:10:10,498 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:10:10,498 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,498 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:10:10,498 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:10:10,498 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration6_Loop [2024-10-31 22:10:10,498 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:10:10,499 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:10:10,499 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:10,508 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:10,531 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:10:10,531 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:10:10,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:10,534 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:10,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-31 22:10:10,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:10:10,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:10:10,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-31 22:10:10,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-31 22:10:10,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:10,612 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:10,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-31 22:10:10,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:10:10,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:10:10,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:10,664 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:10:10,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:10,668 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:10:10,669 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:10:10,669 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:10:10,669 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:10:10,669 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:10:10,669 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,669 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:10:10,669 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:10:10,669 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration6_Loop [2024-10-31 22:10:10,669 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:10:10,669 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:10:10,670 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:10,679 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:10:10,713 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:10:10,713 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:10:10,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:10,715 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:10,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-31 22:10:10,718 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 [2024-10-31 22:10:10,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:10:10,734 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:10:10,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:10:10,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:10:10,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:10:10,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:10:10,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:10:10,740 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:10:10,744 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:10:10,744 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:10:10,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:10:10,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:10,747 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:10,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-31 22:10:10,751 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:10:10,751 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:10:10,751 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:10:10,751 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0#1) = -2*ULTIMATE.start_main_~b~0#1 + 11 Supporting invariants [] [2024-10-31 22:10:10,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-31 22:10:10,770 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:10:10,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:10,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:10:10,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:10,849 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:10:10,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:10,868 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 [2024-10-31 22:10:10,868 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 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) [2024-10-31 22:10:10,893 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. 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 43 states and 48 transitions. Complement of second has 7 states. [2024-10-31 22:10:10,894 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 [2024-10-31 22:10:10,894 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) [2024-10-31 22:10:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2024-10-31 22:10:10,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 18 letters. Loop has 2 letters. [2024-10-31 22:10:10,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:10,895 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:10:10,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:10,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:10:10,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:10,964 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:10:10,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:10,986 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 [2024-10-31 22:10:10,988 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 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) [2024-10-31 22:10:11,019 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. 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 43 states and 48 transitions. Complement of second has 7 states. [2024-10-31 22:10:11,021 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 [2024-10-31 22:10:11,021 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) [2024-10-31 22:10:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2024-10-31 22:10:11,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 18 letters. Loop has 2 letters. [2024-10-31 22:10:11,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:11,024 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:10:11,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:11,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:10:11,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:11,101 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:10:11,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:11,127 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 [2024-10-31 22:10:11,127 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4 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) [2024-10-31 22:10:11,164 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 22 transitions. cyclomatic complexity: 4. 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 30 states and 34 transitions. Complement of second has 6 states. [2024-10-31 22:10:11,164 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 [2024-10-31 22:10:11,165 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) [2024-10-31 22:10:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2024-10-31 22:10:11,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 18 letters. Loop has 2 letters. [2024-10-31 22:10:11,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:11,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 20 letters. Loop has 2 letters. [2024-10-31 22:10:11,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:11,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 18 letters. Loop has 4 letters. [2024-10-31 22:10:11,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:10:11,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 34 transitions. [2024-10-31 22:10:11,170 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:10:11,170 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 0 states and 0 transitions. [2024-10-31 22:10:11,170 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-31 22:10:11,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-31 22:10:11,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-31 22:10:11,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:10:11,174 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:10:11,174 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:10:11,174 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:10:11,174 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-31 22:10:11,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-31 22:10:11,174 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:10:11,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-31 22:10:11,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 31.10 10:10:11 BoogieIcfgContainer [2024-10-31 22:10:11,183 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-31 22:10:11,183 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:10:11,183 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:10:11,184 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:10:11,184 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:07" (3/4) ... [2024-10-31 22:10:11,191 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:10:11,192 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:10:11,193 INFO L158 Benchmark]: Toolchain (without parser) took 4405.54ms. Allocated memory is still 144.7MB. Free memory was 111.4MB in the beginning and 85.3MB in the end (delta: 26.1MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2024-10-31 22:10:11,193 INFO L158 Benchmark]: CDTParser took 0.84ms. Allocated memory is still 113.2MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:11,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.80ms. Allocated memory is still 144.7MB. Free memory was 111.4MB in the beginning and 99.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 22:10:11,194 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.80ms. Allocated memory is still 144.7MB. Free memory was 99.7MB in the beginning and 98.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:11,194 INFO L158 Benchmark]: Boogie Preprocessor took 42.21ms. Allocated memory is still 144.7MB. Free memory was 98.4MB in the beginning and 97.0MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 22:10:11,195 INFO L158 Benchmark]: RCFGBuilder took 378.29ms. Allocated memory is still 144.7MB. Free memory was 97.0MB in the beginning and 87.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 22:10:11,195 INFO L158 Benchmark]: BuchiAutomizer took 3654.27ms. Allocated memory is still 144.7MB. Free memory was 87.2MB in the beginning and 85.3MB in the end (delta: 1.9MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2024-10-31 22:10:11,196 INFO L158 Benchmark]: Witness Printer took 8.74ms. Allocated memory is still 144.7MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:11,198 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84ms. Allocated memory is still 113.2MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.80ms. Allocated memory is still 144.7MB. Free memory was 111.4MB in the beginning and 99.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.80ms. Allocated memory is still 144.7MB. Free memory was 99.7MB in the beginning and 98.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.21ms. Allocated memory is still 144.7MB. Free memory was 98.4MB in the beginning and 97.0MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 378.29ms. Allocated memory is still 144.7MB. Free memory was 97.0MB in the beginning and 87.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3654.27ms. Allocated memory is still 144.7MB. Free memory was 87.2MB in the beginning and 85.3MB in the end (delta: 1.9MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Witness Printer took 8.74ms. Allocated memory is still 144.7MB. Free memory is still 85.3MB. 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 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (((long long) -2 * a) + 11) and consists of 3 locations. One deterministic module has affine ranking function (((long long) -2 * b) + 11) and consists of 4 locations. One nondeterministic module has affine ranking function (((long long) -2 * b) + 11) and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 7 iterations. TraceHistogramMax:6. Analysis of lassos took 2.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 27 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 36/36 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 49 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-31 22:10:11,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:11,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:11,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:11,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aefd5b6-9b83-413d-b23e-f1d746ad0cdd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE