./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 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-simple/nested_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd --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 0.3.0-dev-826ab2b [2024-11-13 15:49:20,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:49:20,374 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-13 15:49:20,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:49:20,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:49:20,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:49:20,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:49:20,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:49:20,425 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:49:20,426 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:49:20,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:49:20,427 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:49:20,427 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:49:20,427 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-13 15:49:20,427 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-13 15:49:20,428 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-13 15:49:20,428 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-13 15:49:20,429 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-13 15:49:20,429 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-13 15:49:20,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:49:20,429 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-13 15:49:20,429 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:49:20,429 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:49:20,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:49:20,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:49:20,430 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-13 15:49:20,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-13 15:49:20,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-13 15:49:20,430 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:49:20,430 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:49:20,430 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:49:20,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:49:20,430 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-13 15:49:20,431 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:49:20,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:49:20,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:49:20,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:49:20,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:49:20,431 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-13 15:49:20,431 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd 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 [2024-11-13 15:49:20,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:49:20,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:49:20,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:49:20,769 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:49:20,769 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:49:20,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/loop-simple/nested_2.c Unable to find full path for "g++" [2024-11-13 15:49:22,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:49:22,952 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:49:22,957 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/sv-benchmarks/c/loop-simple/nested_2.c [2024-11-13 15:49:22,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/data/b682c369d/afe83dd43386412c8854e2f054c25ad1/FLAGf9a17c657 [2024-11-13 15:49:23,012 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/data/b682c369d/afe83dd43386412c8854e2f054c25ad1 [2024-11-13 15:49:23,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:49:23,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:49:23,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:23,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:49:23,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:49:23,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463d66dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23, skipping insertion in model container [2024-11-13 15:49:23,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,045 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:49:23,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:23,217 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:49:23,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:23,243 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:49:23,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23 WrapperNode [2024-11-13 15:49:23,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:23,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:23,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:49:23,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:49:23,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,272 INFO L138 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2024-11-13 15:49:23,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:23,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:49:23,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:49:23,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:49:23,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,296 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]. [2024-11-13 15:49:23,296 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:49:23,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:49:23,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:49:23,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:49:23,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (1/1) ... [2024-11-13 15:49:23,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:23,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:23,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:23,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-13 15:49:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:49:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:49:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:49:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:49:23,449 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:49:23,451 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:49:23,575 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-13 15:49:23,575 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:49:23,589 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:49:23,590 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:49:23,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:23 BoogieIcfgContainer [2024-11-13 15:49:23,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:49:23,592 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-13 15:49:23,593 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-13 15:49:23,598 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-13 15:49:23,599 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-13 15:49:23,600 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.11 03:49:23" (1/3) ... [2024-11-13 15:49:23,601 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b7cb2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 03:49:23, skipping insertion in model container [2024-11-13 15:49:23,602 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-13 15:49:23,602 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:23" (2/3) ... [2024-11-13 15:49:23,602 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b7cb2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 03:49:23, skipping insertion in model container [2024-11-13 15:49:23,603 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-13 15:49:23,603 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:23" (3/3) ... [2024-11-13 15:49:23,605 INFO L333 chiAutomizerObserver]: Analyzing ICFG nested_2.c [2024-11-13 15:49:23,673 INFO L299 stractBuchiCegarLoop]: Interprodecural is true [2024-11-13 15:49:23,674 INFO L300 stractBuchiCegarLoop]: Hoare is None [2024-11-13 15:49:23,674 INFO L301 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-13 15:49:23,674 INFO L302 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-13 15:49:23,674 INFO L303 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-13 15:49:23,674 INFO L304 stractBuchiCegarLoop]: Difference is false [2024-11-13 15:49:23,675 INFO L305 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-13 15:49:23,675 INFO L309 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-13 15:49:23,681 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2024-11-13 15:49:23,699 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-13 15:49:23,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:49:23,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:49:23,706 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-13 15:49:23,706 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-13 15:49:23,706 INFO L331 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-13 15:49:23,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2024-11-13 15:49:23,707 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-13 15:49:23,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:49:23,708 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:49:23,708 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-13 15:49:23,708 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-13 15:49:23,716 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#L20-2true [2024-11-13 15:49:23,717 INFO L747 eck$LassoCheckResult]: Loop: 6#L20-2true assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 10#L21-2true assume !(main_~b~0#1 < 6); 3#L21-3true main_#t~pre5#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre5#1; 6#L20-2true [2024-11-13 15:49:23,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:23,726 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-13 15:49:23,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:23,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067084700] [2024-11-13 15:49:23,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:23,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:23,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:23,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:23,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash 39919, now seen corresponding path program 1 times [2024-11-13 15:49:23,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:23,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100373159] [2024-11-13 15:49:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:23,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:23,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:23,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100373159] [2024-11-13 15:49:23,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100373159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:23,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:23,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:49:23,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871121190] [2024-11-13 15:49:23,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:23,944 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-13 15:49:23,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:23,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:23,975 INFO L87 Difference]: Start difference. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) 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) [2024-11-13 15:49:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:23,997 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2024-11-13 15:49:23,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2024-11-13 15:49:23,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-13 15:49:24,005 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 6 states and 7 transitions. [2024-11-13 15:49:24,006 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-13 15:49:24,006 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-13 15:49:24,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2024-11-13 15:49:24,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-13 15:49:24,007 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2024-11-13 15:49:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2024-11-13 15:49:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2024-11-13 15:49:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2024-11-13 15:49:24,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2024-11-13 15:49:24,034 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2024-11-13 15:49:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:24,039 INFO L424 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2024-11-13 15:49:24,040 INFO L331 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-13 15:49:24,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2024-11-13 15:49:24,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-13 15:49:24,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:49:24,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:49:24,040 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-13 15:49:24,041 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-13 15:49:24,041 INFO L745 eck$LassoCheckResult]: Stem: 34#$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); 35#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; 32#L20-2 [2024-11-13 15:49:24,041 INFO L747 eck$LassoCheckResult]: Loop: 32#L20-2 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 33#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 36#L21-2 assume !(main_~b~0#1 < 6); 31#L21-3 main_#t~pre5#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre5#1; 32#L20-2 [2024-11-13 15:49:24,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:24,042 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-13 15:49:24,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318393114] [2024-11-13 15:49:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:24,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:24,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:24,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:24,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1239247, now seen corresponding path program 1 times [2024-11-13 15:49:24,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:24,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083319277] [2024-11-13 15:49:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:24,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083319277] [2024-11-13 15:49:24,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083319277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371407579] [2024-11-13 15:49:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:24,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:24,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:24,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:24,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:49:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:24,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:49:24,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:24,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:24,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371407579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:49:24,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:49:24,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-13 15:49:24,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207953487] [2024-11-13 15:49:24,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:49:24,270 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-13 15:49:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:24,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:24,275 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2024-11-13 15:49:24,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:24,311 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2024-11-13 15:49:24,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-11-13 15:49:24,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-13 15:49:24,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2024-11-13 15:49:24,312 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-11-13 15:49:24,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-11-13 15:49:24,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2024-11-13 15:49:24,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-13 15:49:24,312 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-13 15:49:24,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2024-11-13 15:49:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-13 15:49:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 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) [2024-11-13 15:49:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-13 15:49:24,318 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-13 15:49:24,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:24,319 INFO L424 stractBuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-13 15:49:24,319 INFO L331 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-13 15:49:24,319 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2024-11-13 15:49:24,320 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-13 15:49:24,320 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:49:24,320 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:49:24,320 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-13 15:49:24,320 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2024-11-13 15:49:24,320 INFO L745 eck$LassoCheckResult]: Stem: 76#$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); 77#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; 74#L20-2 [2024-11-13 15:49:24,321 INFO L747 eck$LassoCheckResult]: Loop: 74#L20-2 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 75#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 78#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 81#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 80#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 79#L21-2 assume !(main_~b~0#1 < 6); 73#L21-3 main_#t~pre5#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre5#1; 74#L20-2 [2024-11-13 15:49:24,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-11-13 15:49:24,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:24,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628403911] [2024-11-13 15:49:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:24,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:24,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:24,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:24,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:24,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1734552593, now seen corresponding path program 2 times [2024-11-13 15:49:24,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:24,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952278955] [2024-11-13 15:49:24,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:24,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:24,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:24,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952278955] [2024-11-13 15:49:24,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952278955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586601302] [2024-11-13 15:49:24,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:49:24,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:24,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:24,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:24,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:49:24,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:49:24,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:49:24,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:49:24,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:24,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:24,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586601302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:49:24,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:49:24,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-13 15:49:24,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756510153] [2024-11-13 15:49:24,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:49:24,664 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-13 15:49:24,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:24,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:49:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:49:24,665 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 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) [2024-11-13 15:49:24,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:24,685 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2024-11-13 15:49:24,685 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2024-11-13 15:49:24,686 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-11-13 15:49:24,686 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2024-11-13 15:49:24,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2024-11-13 15:49:24,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-13 15:49:24,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2024-11-13 15:49:24,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-13 15:49:24,687 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-13 15:49:24,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2024-11-13 15:49:24,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-13 15:49:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2024-11-13 15:49:24,688 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-13 15:49:24,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:49:24,690 INFO L424 stractBuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-13 15:49:24,690 INFO L331 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-13 15:49:24,690 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2024-11-13 15:49:24,691 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-11-13 15:49:24,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:49:24,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:49:24,691 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-13 15:49:24,691 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 1, 1, 1] [2024-11-13 15:49:24,692 INFO L745 eck$LassoCheckResult]: Stem: 143#$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); 144#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; 141#L20-2 [2024-11-13 15:49:24,692 INFO L747 eck$LassoCheckResult]: Loop: 141#L20-2 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 142#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 145#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 150#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 149#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 148#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 147#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 146#L21-2 assume !(main_~b~0#1 < 6); 140#L21-3 main_#t~pre5#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre5#1; 141#L20-2 [2024-11-13 15:49:24,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-11-13 15:49:24,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:24,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261827987] [2024-11-13 15:49:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:24,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:24,701 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:24,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:24,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:24,707 INFO L85 PathProgramCache]: Analyzing trace with hash -457674769, now seen corresponding path program 3 times [2024-11-13 15:49:24,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:24,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871666642] [2024-11-13 15:49:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:24,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:24,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:24,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:24,741 INFO L85 PathProgramCache]: Analyzing trace with hash -525105555, now seen corresponding path program 1 times [2024-11-13 15:49:24,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:24,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471907708] [2024-11-13 15:49:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:24,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:24,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:24,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:24,934 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:49:24,934 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:49:24,934 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:49:24,934 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:49:24,935 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 15:49:24,935 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:24,935 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:49:24,935 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:49:24,935 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration4_Loop [2024-11-13 15:49:24,935 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:49:24,936 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:49:24,952 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:24,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:24,972 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:24,977 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:25,036 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:49:25,037 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 15:49:25,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-13 15:49:25,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:49:25,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:49:25,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:25,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-13 15:49:25,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 15:49:25,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:49:25,162 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 15:49:25,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-13 15:49:25,165 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:49:25,165 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:49:25,166 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:49:25,166 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:49:25,166 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 15:49:25,166 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,166 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:49:25,166 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:49:25,166 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration4_Loop [2024-11-13 15:49:25,166 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:49:25,166 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:49:25,167 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:25,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:25,185 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:25,189 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:25,233 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:49:25,238 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 15:49:25,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-13 15:49:25,247 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 [2024-11-13 15:49:25,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:49:25,262 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:49:25,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:49:25,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:49:25,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:49:25,267 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:49:25,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:49:25,272 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:49:25,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:25,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-13 15:49:25,287 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 [2024-11-13 15:49:25,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:49:25,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:49:25,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:49:25,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:49:25,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:49:25,300 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:49:25,300 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:49:25,304 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 15:49:25,310 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-13 15:49:25,313 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-13 15:49:25,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-13 15:49:25,320 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 15:49:25,320 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 15:49:25,320 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 15:49:25,321 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 [] [2024-11-13 15:49:25,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-13 15:49:25,341 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 15:49:25,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:25,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:49:25,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:25,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:25,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 15:49:25,526 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 [2024-11-13 15:49:25,527 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:25,578 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 12 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 23 transitions. Complement of second has 4 states. [2024-11-13 15:49:25,581 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 [2024-11-13 15:49:25,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-13 15:49:25,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 9 letters. [2024-11-13 15:49:25,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:25,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 11 letters. Loop has 9 letters. [2024-11-13 15:49:25,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:25,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 18 letters. [2024-11-13 15:49:25,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:25,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2024-11-13 15:49:25,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-13 15:49:25,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 22 transitions. [2024-11-13 15:49:25,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-11-13 15:49:25,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-11-13 15:49:25,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 22 transitions. [2024-11-13 15:49:25,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:49:25,594 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-13 15:49:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 22 transitions. [2024-11-13 15:49:25,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2024-11-13 15:49:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) [2024-11-13 15:49:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-11-13 15:49:25,595 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-11-13 15:49:25,595 INFO L424 stractBuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-11-13 15:49:25,596 INFO L331 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-13 15:49:25,596 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2024-11-13 15:49:25,598 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-13 15:49:25,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:49:25,600 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:49:25,600 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-13 15:49:25,600 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-11-13 15:49:25,600 INFO L745 eck$LassoCheckResult]: Stem: 228#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 229#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre4#1, main_#t~pre5#1, main_~a~0#1, main_~b~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~a~0#1 := 0; 225#L20-2 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 227#L21-2 [2024-11-13 15:49:25,601 INFO L747 eck$LassoCheckResult]: Loop: 227#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 227#L21-2 [2024-11-13 15:49:25,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash 29863, now seen corresponding path program 1 times [2024-11-13 15:49:25,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:25,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647939526] [2024-11-13 15:49:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:25,620 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:25,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:25,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:25,630 INFO L85 PathProgramCache]: Analyzing trace with hash 49, now seen corresponding path program 1 times [2024-11-13 15:49:25,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:25,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662263162] [2024-11-13 15:49:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:25,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:25,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:25,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:25,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:25,637 INFO L85 PathProgramCache]: Analyzing trace with hash 925771, now seen corresponding path program 1 times [2024-11-13 15:49:25,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421883994] [2024-11-13 15:49:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:25,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:25,644 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:25,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:25,677 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:49:25,678 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:49:25,678 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:49:25,678 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:49:25,678 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 15:49:25,678 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,678 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:49:25,678 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:49:25,678 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration5_Loop [2024-11-13 15:49:25,678 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:49:25,679 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:49:25,679 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:25,684 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:25,717 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:49:25,717 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 15:49:25,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,720 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-13 15:49:25,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:49:25,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:49:25,740 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:49:25,740 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre4#1=0} Honda state: {ULTIMATE.start_main_#t~pre4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:49:25,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-13 15:49:25,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,755 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-13 15:49:25,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:49:25,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:49:25,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-13 15:49:25,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,787 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-13 15:49:25,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 15:49:25,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:49:25,833 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 15:49:25,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-13 15:49:25,837 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:49:25,837 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:49:25,837 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:49:25,837 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:49:25,837 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 15:49:25,837 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,837 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:49:25,837 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:49:25,837 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration5_Loop [2024-11-13 15:49:25,837 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:49:25,837 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:49:25,839 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:25,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:25,881 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:49:25,881 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 15:49:25,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,885 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-13 15:49:25,888 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-13 15:49:25,902 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:49:25,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:49:25,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:49:25,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:49:25,903 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:49:25,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:49:25,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:49:25,906 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:49:25,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:25,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,926 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-13 15:49:25,929 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 [2024-11-13 15:49:25,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:49:25,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:49:25,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:49:25,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:49:25,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:49:25,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:49:25,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:49:25,948 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 15:49:25,953 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-13 15:49:25,953 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-13 15:49:25,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:25,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,956 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-13 15:49:25,958 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 15:49:25,958 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 15:49:25,958 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 15:49:25,958 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 [] [2024-11-13 15:49:25,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-13 15:49:25,977 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 15:49:26,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:26,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:49:26,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:26,022 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:26,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:26,023 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-13 15:49:26,024 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:26,042 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 31 transitions. Complement of second has 5 states. [2024-11-13 15:49:26,045 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 [2024-11-13 15:49:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-13 15:49:26,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2024-11-13 15:49:26,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:26,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2024-11-13 15:49:26,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:26,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2024-11-13 15:49:26,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:26,047 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2024-11-13 15:49:26,048 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-13 15:49:26,049 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 22 states and 26 transitions. [2024-11-13 15:49:26,049 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2024-11-13 15:49:26,049 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2024-11-13 15:49:26,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2024-11-13 15:49:26,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:49:26,050 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-13 15:49:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2024-11-13 15:49:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 13. [2024-11-13 15:49:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 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) [2024-11-13 15:49:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-13 15:49:26,052 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-13 15:49:26,052 INFO L424 stractBuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-13 15:49:26,052 INFO L331 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-13 15:49:26,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2024-11-13 15:49:26,053 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-13 15:49:26,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:49:26,053 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:49:26,053 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 2, 1, 1, 1, 1] [2024-11-13 15:49:26,053 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-11-13 15:49:26,053 INFO L745 eck$LassoCheckResult]: Stem: 298#$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); 299#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; 295#L20-2 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 296#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 300#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 305#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 304#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 303#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 302#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 301#L21-2 assume !(main_~b~0#1 < 6); 293#L21-3 main_#t~pre5#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre5#1; 294#L20-2 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 297#L21-2 [2024-11-13 15:49:26,053 INFO L747 eck$LassoCheckResult]: Loop: 297#L21-2 assume !!(main_~b~0#1 < 6);main_#t~pre4#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre4#1; 297#L21-2 [2024-11-13 15:49:26,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash 901596989, now seen corresponding path program 2 times [2024-11-13 15:49:26,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734922475] [2024-11-13 15:49:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:26,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:26,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:26,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:26,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:26,111 INFO L85 PathProgramCache]: Analyzing trace with hash 49, now seen corresponding path program 2 times [2024-11-13 15:49:26,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:26,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897012535] [2024-11-13 15:49:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:26,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:26,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:26,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:26,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:26,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2115264395, now seen corresponding path program 3 times [2024-11-13 15:49:26,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:26,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979363314] [2024-11-13 15:49:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:26,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:49:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:49:26,178 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:49:26,211 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:49:26,211 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:49:26,211 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:49:26,212 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:49:26,212 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 15:49:26,212 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:26,212 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:49:26,212 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:49:26,212 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration6_Loop [2024-11-13 15:49:26,212 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:49:26,212 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:49:26,213 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:26,225 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:26,255 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:49:26,255 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 15:49:26,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:26,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:26,260 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:26,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-13 15:49:26,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:49:26,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:49:26,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:26,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:26,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:26,315 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:26,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-13 15:49:26,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 15:49:26,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:49:26,369 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 15:49:26,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:26,373 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:49:26,373 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:49:26,373 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:49:26,373 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:49:26,373 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 15:49:26,373 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:26,373 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:49:26,373 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:49:26,373 INFO L132 ssoRankerPreferences]: Filename of dumped script: nested_2.c_Iteration6_Loop [2024-11-13 15:49:26,373 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:49:26,373 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:49:26,374 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:26,383 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:49:26,420 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:49:26,420 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 15:49:26,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:26,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:26,424 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:26,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-13 15:49:26,429 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 [2024-11-13 15:49:26,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:49:26,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:49:26,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:49:26,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:49:26,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:49:26,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:49:26,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:49:26,450 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 15:49:26,455 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-13 15:49:26,455 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-13 15:49:26,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:49:26,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:26,459 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:26,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-13 15:49:26,462 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 15:49:26,463 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 15:49:26,463 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 15:49:26,463 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 [] [2024-11-13 15:49:26,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-13 15:49:26,487 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 15:49:26,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:26,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:49:26,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:26,567 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:26,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:26,568 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-13 15:49:26,568 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-13 15:49:26,584 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 28 transitions. Complement of second has 5 states. [2024-11-13 15:49:26,584 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 [2024-11-13 15:49:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-13 15:49:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-13 15:49:26,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 12 letters. Loop has 1 letters. [2024-11-13 15:49:26,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:26,586 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 15:49:26,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:26,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:49:26,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:26,668 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:26,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:26,669 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-13 15:49:26,670 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-13 15:49:26,683 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 28 transitions. Complement of second has 5 states. [2024-11-13 15:49:26,684 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 [2024-11-13 15:49:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-13 15:49:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-13 15:49:26,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 12 letters. Loop has 1 letters. [2024-11-13 15:49:26,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:26,686 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 15:49:26,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:26,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:49:26,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:26,768 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:26,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:26,769 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 1 loop predicates [2024-11-13 15:49:26,769 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-13 15:49:26,791 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 18 transitions. Complement of second has 4 states. [2024-11-13 15:49:26,794 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 [2024-11-13 15:49:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-13 15:49:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2024-11-13 15:49:26,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 12 letters. Loop has 1 letters. [2024-11-13 15:49:26,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:26,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 1 letters. [2024-11-13 15:49:26,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:26,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 12 letters. Loop has 2 letters. [2024-11-13 15:49:26,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:49:26,801 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2024-11-13 15:49:26,802 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-13 15:49:26,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2024-11-13 15:49:26,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-13 15:49:26,802 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-13 15:49:26,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-13 15:49:26,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-13 15:49:26,802 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 15:49:26,802 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 15:49:26,802 INFO L424 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 15:49:26,802 INFO L331 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-13 15:49:26,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-13 15:49:26,803 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-13 15:49:26,803 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-13 15:49:26,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.11 03:49:26 BoogieIcfgContainer [2024-11-13 15:49:26,821 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-13 15:49:26,822 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:49:26,822 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:49:26,822 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:49:26,823 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:23" (3/4) ... [2024-11-13 15:49:26,826 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 15:49:26,827 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:49:26,828 INFO L158 Benchmark]: Toolchain (without parser) took 3806.11ms. Allocated memory is still 142.6MB. Free memory was 119.5MB in the beginning and 61.1MB in the end (delta: 58.4MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. [2024-11-13 15:49:26,828 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:49:26,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.29ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 109.1MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:49:26,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.35ms. Allocated memory is still 142.6MB. Free memory was 109.1MB in the beginning and 107.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:49:26,829 INFO L158 Benchmark]: Boogie Preprocessor took 40.11ms. Allocated memory is still 142.6MB. Free memory was 107.9MB in the beginning and 106.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:49:26,830 INFO L158 Benchmark]: RCFGBuilder took 276.88ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 97.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:49:26,830 INFO L158 Benchmark]: BuchiAutomizer took 3228.41ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 61.1MB in the end (delta: 36.5MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2024-11-13 15:49:26,830 INFO L158 Benchmark]: Witness Printer took 5.20ms. Allocated memory is still 142.6MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:49:26,834 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.29ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 109.1MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.35ms. Allocated memory is still 142.6MB. Free memory was 109.1MB in the beginning and 107.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.11ms. Allocated memory is still 142.6MB. Free memory was 107.9MB in the beginning and 106.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 276.88ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 97.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3228.41ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 61.1MB in the end (delta: 36.5MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. * Witness Printer took 5.20ms. Allocated memory is still 142.6MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 27.0kB). 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 3 locations. One nondeterministic module has affine ranking function (((long long) -2 * b) + 11) and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 7 iterations. TraceHistogramMax:6. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 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: 21/21 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 47 mSDtfsCounter, 45 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: 33ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 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! [2024-11-13 15:49:26,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:27,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-13 15:49:27,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:27,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:49:27,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:49:27,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9c0a8f-fe15-4c20-a253-721aad8297ec/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE