./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.BOUNDED-14.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.BOUNDED-14.pals.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 84bce40124007e6e483bf8a05621b58460eab347da71074e5760fdf76654ee7f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 08:00:12,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 08:00:12,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-01-10 08:00:12,559 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 08:00:12,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 08:00:12,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 08:00:12,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 08:00:12,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 08:00:12,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 08:00:12,586 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 08:00:12,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 08:00:12,587 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Use old map elimination=false [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-01-10 08:00:12,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-01-10 08:00:12,587 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 08:00:12,588 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 08:00:12,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 08:00:12,588 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-01-10 08:00:12,588 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 08:00:12,588 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 08:00:12,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 08:00:12,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 08:00:12,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 08:00:12,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 08:00:12,588 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-01-10 08:00:12,588 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 -> 84bce40124007e6e483bf8a05621b58460eab347da71074e5760fdf76654ee7f [2025-01-10 08:00:12,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 08:00:12,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 08:00:12,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 08:00:12,809 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 08:00:12,810 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 08:00:12,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.BOUNDED-14.pals.c [2025-01-10 08:00:13,959 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1806db4d2/c0fb0786211549f287f1b7962cf372e4/FLAGe62697e2c [2025-01-10 08:00:14,224 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 08:00:14,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.BOUNDED-14.pals.c [2025-01-10 08:00:14,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1806db4d2/c0fb0786211549f287f1b7962cf372e4/FLAGe62697e2c [2025-01-10 08:00:14,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1806db4d2/c0fb0786211549f287f1b7962cf372e4 [2025-01-10 08:00:14,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 08:00:14,529 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 08:00:14,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 08:00:14,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 08:00:14,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 08:00:14,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301d9966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14, skipping insertion in model container [2025-01-10 08:00:14,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,553 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 08:00:14,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 08:00:14,751 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 08:00:14,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 08:00:14,806 INFO L204 MainTranslator]: Completed translation [2025-01-10 08:00:14,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14 WrapperNode [2025-01-10 08:00:14,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 08:00:14,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 08:00:14,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 08:00:14,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 08:00:14,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,854 INFO L138 Inliner]: procedures = 26, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 434 [2025-01-10 08:00:14,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 08:00:14,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 08:00:14,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 08:00:14,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 08:00:14,862 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,881 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]. [2025-01-10 08:00:14,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,887 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 08:00:14,896 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 08:00:14,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 08:00:14,897 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 08:00:14,897 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (1/1) ... [2025-01-10 08:00:14,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 08:00:14,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 08:00:14,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 08:00:14,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-01-10 08:00:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 08:00:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 08:00:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 08:00:14,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 08:00:15,030 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 08:00:15,032 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 08:00:15,430 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2025-01-10 08:00:15,431 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 08:00:15,438 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 08:00:15,438 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 08:00:15,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:00:15 BoogieIcfgContainer [2025-01-10 08:00:15,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 08:00:15,439 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-01-10 08:00:15,439 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-01-10 08:00:15,443 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-01-10 08:00:15,443 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 08:00:15,443 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.01 08:00:14" (1/3) ... [2025-01-10 08:00:15,445 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44e26e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.01 08:00:15, skipping insertion in model container [2025-01-10 08:00:15,445 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 08:00:15,445 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:14" (2/3) ... [2025-01-10 08:00:15,445 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44e26e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.01 08:00:15, skipping insertion in model container [2025-01-10 08:00:15,445 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 08:00:15,445 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:00:15" (3/3) ... [2025-01-10 08:00:15,446 INFO L363 chiAutomizerObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c [2025-01-10 08:00:15,481 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-01-10 08:00:15,481 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-01-10 08:00:15,481 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-01-10 08:00:15,481 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-01-10 08:00:15,482 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-01-10 08:00:15,482 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-01-10 08:00:15,482 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-01-10 08:00:15,482 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-01-10 08:00:15,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 113 states, 112 states have (on average 1.7678571428571428) internal successors, (198), 112 states have internal predecessors, (198), 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) [2025-01-10 08:00:15,498 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 54 [2025-01-10 08:00:15,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 08:00:15,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 08:00:15,503 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 08:00:15,503 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 08:00:15,503 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-01-10 08:00:15,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 113 states, 112 states have (on average 1.7678571428571428) internal successors, (198), 112 states have internal predecessors, (198), 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) [2025-01-10 08:00:15,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 54 [2025-01-10 08:00:15,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 08:00:15,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 08:00:15,511 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 08:00:15,511 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 08:00:15,516 INFO L752 eck$LassoCheckResult]: Stem: "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(33, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~p7~0 := 0;~p7_old~0 := 0;~p7_new~0 := 0;~id7~0 := 0;~st7~0 := 0;~send7~0 := 0;~mode7~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~ret33#1, main_#t~ret34#1, main_#t~post35#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;havoc main_#t~nondet4#1;~r1~0 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_#t~nondet5#1;~id1~0 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_#t~nondet6#1;~st1~0 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_#t~nondet7#1;~send1~0 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_#t~nondet8#1;assume 0 == main_#t~nondet8#1 || 1 == main_#t~nondet8#1;~mode1~0 := (if 0 == main_#t~nondet8#1 % 256 then 0 else 1);havoc main_#t~nondet8#1;havoc main_#t~nondet9#1;~id2~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_#t~nondet10#1;~st2~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_#t~nondet11#1;~send2~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_#t~nondet12#1;assume 0 == main_#t~nondet12#1 || 1 == main_#t~nondet12#1;~mode2~0 := (if 0 == main_#t~nondet12#1 % 256 then 0 else 1);havoc main_#t~nondet12#1;havoc main_#t~nondet13#1;~id3~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_#t~nondet14#1;~st3~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_#t~nondet15#1;~send3~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;assume 0 == main_#t~nondet16#1 || 1 == main_#t~nondet16#1;~mode3~0 := (if 0 == main_#t~nondet16#1 % 256 then 0 else 1);havoc main_#t~nondet16#1;havoc main_#t~nondet17#1;~id4~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;~st4~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_#t~nondet19#1;~send4~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_#t~nondet20#1;assume 0 == main_#t~nondet20#1 || 1 == main_#t~nondet20#1;~mode4~0 := (if 0 == main_#t~nondet20#1 % 256 then 0 else 1);havoc main_#t~nondet20#1;havoc main_#t~nondet21#1;~id5~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_#t~nondet22#1;~st5~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;havoc main_#t~nondet23#1;~send5~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;havoc main_#t~nondet24#1;assume 0 == main_#t~nondet24#1 || 1 == main_#t~nondet24#1;~mode5~0 := (if 0 == main_#t~nondet24#1 % 256 then 0 else 1);havoc main_#t~nondet24#1;havoc main_#t~nondet25#1;~id6~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;havoc main_#t~nondet26#1;~st6~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;havoc main_#t~nondet27#1;~send6~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;havoc main_#t~nondet28#1;assume 0 == main_#t~nondet28#1 || 1 == main_#t~nondet28#1;~mode6~0 := (if 0 == main_#t~nondet28#1 % 256 then 0 else 1);havoc main_#t~nondet28#1;havoc main_#t~nondet29#1;~id7~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;havoc main_#t~nondet30#1;~st7~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;havoc main_#t~nondet31#1;~send7~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;havoc main_#t~nondet32#1;assume 0 == main_#t~nondet32#1 || 1 == main_#t~nondet32#1;~mode7~0 := (if 0 == main_#t~nondet32#1 % 256 then 0 else 1);havoc main_#t~nondet32#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1;" "assume !(0 == ~r1~0);init_~tmp~0#1 := 0;" "init_#res#1 := init_~tmp~0#1;" "main_#t~ret33#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret33#1;havoc main_#t~ret33#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1;" "assume !(0 == assume_abort_if_not_~cond#1);" "havoc assume_abort_if_not_~cond#1;havoc assume_abort_if_not_#in~cond#1;assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;~p7_old~0 := ~nomsg~0;~p7_new~0 := ~nomsg~0;main_~i2~0#1 := 0;" [2025-01-10 08:00:15,517 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i2~0#1 < 14;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0;" "assume !(0 != ~mode1~0 % 256);~p1_new~0 := (if (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 <= 127 then (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 else (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 - 256);~mode1~0 := 1;" "havoc node1_~m1~0#1;assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0;" "assume !(0 != ~mode2~0 % 256);~p2_new~0 := (if (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 <= 127 then (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 else (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 - 256);~mode2~0 := 1;" "havoc node2_~m2~0#1;assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0;" "assume !(0 != ~mode3~0 % 256);~p3_new~0 := (if (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 <= 127 then (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 else (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 - 256);~mode3~0 := 1;" "havoc node3_~m3~0#1;assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0;" "assume !(0 != ~mode4~0 % 256);~p4_new~0 := (if (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 <= 127 then (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 else (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 - 256);~mode4~0 := 1;" "havoc node4_~m4~0#1;assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0;" "assume !(0 != ~mode5~0 % 256);~p5_new~0 := (if (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 <= 127 then (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 else (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 - 256);~mode5~0 := 1;" "havoc node5_~m5~0#1;assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0;" "assume !(0 != ~mode6~0 % 256);~p6_new~0 := (if (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 <= 127 then (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 else (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 - 256);~mode6~0 := 1;" "havoc node6_~m6~0#1;assume { :end_inline_node6 } true;assume { :begin_inline_node7 } true;havoc node7_~m7~0#1;havoc node7_~m7~0#1;node7_~m7~0#1 := ~nomsg~0;" "assume !(0 != ~mode7~0 % 256);~p7_new~0 := (if (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 <= 127 then (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 else (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 - 256);~mode7~0 := 1;" "havoc node7_~m7~0#1;assume { :end_inline_node7 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;~p7_old~0 := ~p7_new~0;~p7_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1;" "assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1);check_~tmp~1#1 := 0;" "check_#res#1 := check_~tmp~1#1;" "main_#t~ret34#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret34#1;havoc main_#t~ret34#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1;" "assume !(0 == assert_~arg#1 % 256);" "havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true;main_#t~post35#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post35#1;havoc main_#t~post35#1;" [2025-01-10 08:00:15,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 08:00:15,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2087378158, now seen corresponding path program 1 times [2025-01-10 08:00:15,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 08:00:15,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611108882] [2025-01-10 08:00:15,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 08:00:15,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 08:00:15,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 08:00:15,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 08:00:15,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:15,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 08:00:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 08:00:15,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 08:00:15,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611108882] [2025-01-10 08:00:15,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611108882] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 08:00:15,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 08:00:15,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 08:00:15,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379272118] [2025-01-10 08:00:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 08:00:15,837 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 08:00:15,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 08:00:15,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1363075746, now seen corresponding path program 1 times [2025-01-10 08:00:15,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 08:00:15,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525304861] [2025-01-10 08:00:15,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 08:00:15,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 08:00:15,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 08:00:15,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 08:00:15,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:15,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 08:00:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 08:00:16,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 08:00:16,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525304861] [2025-01-10 08:00:16,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525304861] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 08:00:16,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 08:00:16,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 08:00:16,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721818652] [2025-01-10 08:00:16,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 08:00:16,151 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-01-10 08:00:16,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 08:00:16,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 08:00:16,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 08:00:16,178 INFO L87 Difference]: Start difference. First operand has 113 states, 112 states have (on average 1.7678571428571428) internal successors, (198), 112 states have internal predecessors, (198), 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 5 states, 5 states have (on average 1.4) 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) [2025-01-10 08:00:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 08:00:16,278 INFO L93 Difference]: Finished difference Result 115 states and 197 transitions. [2025-01-10 08:00:16,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 197 transitions. [2025-01-10 08:00:16,282 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2025-01-10 08:00:16,286 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 108 states and 141 transitions. [2025-01-10 08:00:16,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 108 [2025-01-10 08:00:16,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 108 [2025-01-10 08:00:16,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 141 transitions. [2025-01-10 08:00:16,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-01-10 08:00:16,287 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 141 transitions. [2025-01-10 08:00:16,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 141 transitions. [2025-01-10 08:00:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-01-10 08:00:16,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 108 states have (on average 1.3055555555555556) internal successors, (141), 107 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 08:00:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 141 transitions. [2025-01-10 08:00:16,333 INFO L240 hiAutomatonCegarLoop]: Abstraction has 108 states and 141 transitions. [2025-01-10 08:00:16,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 08:00:16,338 INFO L432 stractBuchiCegarLoop]: Abstraction has 108 states and 141 transitions. [2025-01-10 08:00:16,338 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-01-10 08:00:16,338 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 108 states and 141 transitions. [2025-01-10 08:00:16,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2025-01-10 08:00:16,339 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 08:00:16,339 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 08:00:16,340 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 08:00:16,340 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 08:00:16,341 INFO L752 eck$LassoCheckResult]: Stem: "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(33, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~p7~0 := 0;~p7_old~0 := 0;~p7_new~0 := 0;~id7~0 := 0;~st7~0 := 0;~send7~0 := 0;~mode7~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~ret33#1, main_#t~ret34#1, main_#t~post35#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;havoc main_#t~nondet4#1;~r1~0 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_#t~nondet5#1;~id1~0 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_#t~nondet6#1;~st1~0 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_#t~nondet7#1;~send1~0 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_#t~nondet8#1;assume 0 == main_#t~nondet8#1 || 1 == main_#t~nondet8#1;~mode1~0 := (if 0 == main_#t~nondet8#1 % 256 then 0 else 1);havoc main_#t~nondet8#1;havoc main_#t~nondet9#1;~id2~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_#t~nondet10#1;~st2~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_#t~nondet11#1;~send2~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_#t~nondet12#1;assume 0 == main_#t~nondet12#1 || 1 == main_#t~nondet12#1;~mode2~0 := (if 0 == main_#t~nondet12#1 % 256 then 0 else 1);havoc main_#t~nondet12#1;havoc main_#t~nondet13#1;~id3~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_#t~nondet14#1;~st3~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_#t~nondet15#1;~send3~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;assume 0 == main_#t~nondet16#1 || 1 == main_#t~nondet16#1;~mode3~0 := (if 0 == main_#t~nondet16#1 % 256 then 0 else 1);havoc main_#t~nondet16#1;havoc main_#t~nondet17#1;~id4~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;~st4~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_#t~nondet19#1;~send4~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_#t~nondet20#1;assume 0 == main_#t~nondet20#1 || 1 == main_#t~nondet20#1;~mode4~0 := (if 0 == main_#t~nondet20#1 % 256 then 0 else 1);havoc main_#t~nondet20#1;havoc main_#t~nondet21#1;~id5~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_#t~nondet22#1;~st5~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;havoc main_#t~nondet23#1;~send5~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;havoc main_#t~nondet24#1;assume 0 == main_#t~nondet24#1 || 1 == main_#t~nondet24#1;~mode5~0 := (if 0 == main_#t~nondet24#1 % 256 then 0 else 1);havoc main_#t~nondet24#1;havoc main_#t~nondet25#1;~id6~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;havoc main_#t~nondet26#1;~st6~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;havoc main_#t~nondet27#1;~send6~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;havoc main_#t~nondet28#1;assume 0 == main_#t~nondet28#1 || 1 == main_#t~nondet28#1;~mode6~0 := (if 0 == main_#t~nondet28#1 % 256 then 0 else 1);havoc main_#t~nondet28#1;havoc main_#t~nondet29#1;~id7~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;havoc main_#t~nondet30#1;~st7~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;havoc main_#t~nondet31#1;~send7~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;havoc main_#t~nondet32#1;assume 0 == main_#t~nondet32#1 || 1 == main_#t~nondet32#1;~mode7~0 := (if 0 == main_#t~nondet32#1 % 256 then 0 else 1);havoc main_#t~nondet32#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1;" "assume 0 == ~r1~0;" "assume ~id1~0 >= 0;" "assume 0 == ~st1~0;" "assume ~send1~0 == ~id1~0;" "assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296);" "assume ~id2~0 >= 0;" "assume 0 == ~st2~0;" "assume ~send2~0 == ~id2~0;" "assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296);" "assume ~id3~0 >= 0;" "assume 0 == ~st3~0;" "assume ~send3~0 == ~id3~0;" "assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296);" "assume ~id4~0 >= 0;" "assume 0 == ~st4~0;" "assume ~send4~0 == ~id4~0;" "assume 0 == (if ~mode4~0 % 256 % 4294967296 <= 2147483647 then ~mode4~0 % 256 % 4294967296 else ~mode4~0 % 256 % 4294967296 - 4294967296);" "assume ~id5~0 >= 0;" "assume 0 == ~st5~0;" "assume ~send5~0 == ~id5~0;" "assume 0 == (if ~mode5~0 % 256 % 4294967296 <= 2147483647 then ~mode5~0 % 256 % 4294967296 else ~mode5~0 % 256 % 4294967296 - 4294967296);" "assume ~id6~0 >= 0;" "assume 0 == ~st6~0;" "assume ~send6~0 == ~id6~0;" "assume 0 == (if ~mode6~0 % 256 % 4294967296 <= 2147483647 then ~mode6~0 % 256 % 4294967296 else ~mode6~0 % 256 % 4294967296 - 4294967296);" "assume ~id7~0 >= 0;" "assume 0 == ~st7~0;" "assume ~send7~0 == ~id7~0;" "assume 0 == (if ~mode7~0 % 256 % 4294967296 <= 2147483647 then ~mode7~0 % 256 % 4294967296 else ~mode7~0 % 256 % 4294967296 - 4294967296);" "assume ~id1~0 != ~id2~0;" "assume ~id1~0 != ~id3~0;" "assume ~id1~0 != ~id4~0;" "assume ~id1~0 != ~id5~0;" "assume ~id1~0 != ~id6~0;" "assume ~id1~0 != ~id7~0;" "assume ~id2~0 != ~id3~0;" "assume ~id2~0 != ~id4~0;" "assume ~id2~0 != ~id5~0;" "assume ~id2~0 != ~id6~0;" "assume ~id2~0 != ~id7~0;" "assume ~id3~0 != ~id4~0;" "assume ~id3~0 != ~id5~0;" "assume ~id3~0 != ~id6~0;" "assume ~id3~0 != ~id7~0;" "assume ~id4~0 != ~id5~0;" "assume ~id4~0 != ~id6~0;" "assume ~id4~0 != ~id7~0;" "assume ~id5~0 != ~id6~0;" "assume ~id5~0 != ~id7~0;" "assume ~id6~0 != ~id7~0;init_~tmp~0#1 := 1;" "init_#res#1 := init_~tmp~0#1;" "main_#t~ret33#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret33#1;havoc main_#t~ret33#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1;" "assume !(0 == assume_abort_if_not_~cond#1);" "havoc assume_abort_if_not_~cond#1;havoc assume_abort_if_not_#in~cond#1;assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;~p7_old~0 := ~nomsg~0;~p7_new~0 := ~nomsg~0;main_~i2~0#1 := 0;" [2025-01-10 08:00:16,341 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i2~0#1 < 14;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0;" "assume !(0 != ~mode1~0 % 256);~p1_new~0 := (if (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 <= 127 then (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 else (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 - 256);~mode1~0 := 1;" "havoc node1_~m1~0#1;assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0;" "assume !(0 != ~mode2~0 % 256);~p2_new~0 := (if (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 <= 127 then (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 else (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 - 256);~mode2~0 := 1;" "havoc node2_~m2~0#1;assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0;" "assume !(0 != ~mode3~0 % 256);~p3_new~0 := (if (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 <= 127 then (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 else (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 - 256);~mode3~0 := 1;" "havoc node3_~m3~0#1;assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0;" "assume !(0 != ~mode4~0 % 256);~p4_new~0 := (if (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 <= 127 then (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 else (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 - 256);~mode4~0 := 1;" "havoc node4_~m4~0#1;assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0;" "assume !(0 != ~mode5~0 % 256);~p5_new~0 := (if (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 <= 127 then (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 else (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 - 256);~mode5~0 := 1;" "havoc node5_~m5~0#1;assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0;" "assume !(0 != ~mode6~0 % 256);~p6_new~0 := (if (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 <= 127 then (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 else (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 - 256);~mode6~0 := 1;" "havoc node6_~m6~0#1;assume { :end_inline_node6 } true;assume { :begin_inline_node7 } true;havoc node7_~m7~0#1;havoc node7_~m7~0#1;node7_~m7~0#1 := ~nomsg~0;" "assume !(0 != ~mode7~0 % 256);~p7_new~0 := (if (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 <= 127 then (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 else (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 - 256);~mode7~0 := 1;" "havoc node7_~m7~0#1;assume { :end_inline_node7 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;~p7_old~0 := ~p7_new~0;~p7_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1;" "assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1);check_~tmp~1#1 := 0;" "check_#res#1 := check_~tmp~1#1;" "main_#t~ret34#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret34#1;havoc main_#t~ret34#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1;" "assume !(0 == assert_~arg#1 % 256);" "havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true;main_#t~post35#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post35#1;havoc main_#t~post35#1;" [2025-01-10 08:00:16,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 08:00:16,341 INFO L85 PathProgramCache]: Analyzing trace with hash 292839954, now seen corresponding path program 1 times [2025-01-10 08:00:16,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 08:00:16,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655195019] [2025-01-10 08:00:16,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 08:00:16,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 08:00:16,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 08:00:16,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 08:00:16,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:16,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 08:00:16,372 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 08:00:16,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 08:00:16,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 08:00:16,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:16,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 08:00:16,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 08:00:16,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 08:00:16,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1363075746, now seen corresponding path program 2 times [2025-01-10 08:00:16,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 08:00:16,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765535320] [2025-01-10 08:00:16,436 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 08:00:16,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 08:00:16,449 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-01-10 08:00:16,480 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 08:00:16,480 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 08:00:16,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 08:00:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 08:00:16,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 08:00:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765535320] [2025-01-10 08:00:16,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765535320] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 08:00:16,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 08:00:16,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 08:00:16,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797878605] [2025-01-10 08:00:16,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 08:00:16,626 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-01-10 08:00:16,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 08:00:16,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 08:00:16,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 08:00:16,627 INFO L87 Difference]: Start difference. First operand 108 states and 141 transitions. cyclomatic complexity: 34 Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 08:00:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 08:00:16,653 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2025-01-10 08:00:16,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 143 transitions. [2025-01-10 08:00:16,654 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2025-01-10 08:00:16,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 108 states and 138 transitions. [2025-01-10 08:00:16,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 108 [2025-01-10 08:00:16,657 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 108 [2025-01-10 08:00:16,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 138 transitions. [2025-01-10 08:00:16,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-01-10 08:00:16,657 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 138 transitions. [2025-01-10 08:00:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 138 transitions. [2025-01-10 08:00:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-01-10 08:00:16,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 108 states have (on average 1.2777777777777777) internal successors, (138), 107 states have internal predecessors, (138), 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) [2025-01-10 08:00:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2025-01-10 08:00:16,665 INFO L240 hiAutomatonCegarLoop]: Abstraction has 108 states and 138 transitions. [2025-01-10 08:00:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 08:00:16,666 INFO L432 stractBuchiCegarLoop]: Abstraction has 108 states and 138 transitions. [2025-01-10 08:00:16,666 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-01-10 08:00:16,666 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 108 states and 138 transitions. [2025-01-10 08:00:16,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2025-01-10 08:00:16,667 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 08:00:16,667 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 08:00:16,668 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 08:00:16,668 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 08:00:16,668 INFO L752 eck$LassoCheckResult]: Stem: "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(33, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~p7~0 := 0;~p7_old~0 := 0;~p7_new~0 := 0;~id7~0 := 0;~st7~0 := 0;~send7~0 := 0;~mode7~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~ret33#1, main_#t~ret34#1, main_#t~post35#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;havoc main_#t~nondet4#1;~r1~0 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_#t~nondet5#1;~id1~0 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_#t~nondet6#1;~st1~0 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_#t~nondet7#1;~send1~0 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_#t~nondet8#1;assume 0 == main_#t~nondet8#1 || 1 == main_#t~nondet8#1;~mode1~0 := (if 0 == main_#t~nondet8#1 % 256 then 0 else 1);havoc main_#t~nondet8#1;havoc main_#t~nondet9#1;~id2~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_#t~nondet10#1;~st2~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_#t~nondet11#1;~send2~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_#t~nondet12#1;assume 0 == main_#t~nondet12#1 || 1 == main_#t~nondet12#1;~mode2~0 := (if 0 == main_#t~nondet12#1 % 256 then 0 else 1);havoc main_#t~nondet12#1;havoc main_#t~nondet13#1;~id3~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_#t~nondet14#1;~st3~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_#t~nondet15#1;~send3~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;assume 0 == main_#t~nondet16#1 || 1 == main_#t~nondet16#1;~mode3~0 := (if 0 == main_#t~nondet16#1 % 256 then 0 else 1);havoc main_#t~nondet16#1;havoc main_#t~nondet17#1;~id4~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;~st4~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_#t~nondet19#1;~send4~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_#t~nondet20#1;assume 0 == main_#t~nondet20#1 || 1 == main_#t~nondet20#1;~mode4~0 := (if 0 == main_#t~nondet20#1 % 256 then 0 else 1);havoc main_#t~nondet20#1;havoc main_#t~nondet21#1;~id5~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_#t~nondet22#1;~st5~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;havoc main_#t~nondet23#1;~send5~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;havoc main_#t~nondet24#1;assume 0 == main_#t~nondet24#1 || 1 == main_#t~nondet24#1;~mode5~0 := (if 0 == main_#t~nondet24#1 % 256 then 0 else 1);havoc main_#t~nondet24#1;havoc main_#t~nondet25#1;~id6~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;havoc main_#t~nondet26#1;~st6~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;havoc main_#t~nondet27#1;~send6~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;havoc main_#t~nondet28#1;assume 0 == main_#t~nondet28#1 || 1 == main_#t~nondet28#1;~mode6~0 := (if 0 == main_#t~nondet28#1 % 256 then 0 else 1);havoc main_#t~nondet28#1;havoc main_#t~nondet29#1;~id7~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;havoc main_#t~nondet30#1;~st7~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;havoc main_#t~nondet31#1;~send7~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;havoc main_#t~nondet32#1;assume 0 == main_#t~nondet32#1 || 1 == main_#t~nondet32#1;~mode7~0 := (if 0 == main_#t~nondet32#1 % 256 then 0 else 1);havoc main_#t~nondet32#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1;" "assume 0 == ~r1~0;" "assume ~id1~0 >= 0;" "assume 0 == ~st1~0;" "assume ~send1~0 == ~id1~0;" "assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296);" "assume ~id2~0 >= 0;" "assume 0 == ~st2~0;" "assume ~send2~0 == ~id2~0;" "assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296);" "assume ~id3~0 >= 0;" "assume 0 == ~st3~0;" "assume ~send3~0 == ~id3~0;" "assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296);" "assume ~id4~0 >= 0;" "assume 0 == ~st4~0;" "assume ~send4~0 == ~id4~0;" "assume 0 == (if ~mode4~0 % 256 % 4294967296 <= 2147483647 then ~mode4~0 % 256 % 4294967296 else ~mode4~0 % 256 % 4294967296 - 4294967296);" "assume ~id5~0 >= 0;" "assume 0 == ~st5~0;" "assume ~send5~0 == ~id5~0;" "assume 0 == (if ~mode5~0 % 256 % 4294967296 <= 2147483647 then ~mode5~0 % 256 % 4294967296 else ~mode5~0 % 256 % 4294967296 - 4294967296);" "assume ~id6~0 >= 0;" "assume 0 == ~st6~0;" "assume ~send6~0 == ~id6~0;" "assume 0 == (if ~mode6~0 % 256 % 4294967296 <= 2147483647 then ~mode6~0 % 256 % 4294967296 else ~mode6~0 % 256 % 4294967296 - 4294967296);" "assume ~id7~0 >= 0;" "assume 0 == ~st7~0;" "assume ~send7~0 == ~id7~0;" "assume 0 == (if ~mode7~0 % 256 % 4294967296 <= 2147483647 then ~mode7~0 % 256 % 4294967296 else ~mode7~0 % 256 % 4294967296 - 4294967296);" "assume ~id1~0 != ~id2~0;" "assume ~id1~0 != ~id3~0;" "assume ~id1~0 != ~id4~0;" "assume ~id1~0 != ~id5~0;" "assume ~id1~0 != ~id6~0;" "assume ~id1~0 != ~id7~0;" "assume ~id2~0 != ~id3~0;" "assume ~id2~0 != ~id4~0;" "assume ~id2~0 != ~id5~0;" "assume ~id2~0 != ~id6~0;" "assume ~id2~0 != ~id7~0;" "assume ~id3~0 != ~id4~0;" "assume ~id3~0 != ~id5~0;" "assume ~id3~0 != ~id6~0;" "assume ~id3~0 != ~id7~0;" "assume ~id4~0 != ~id5~0;" "assume ~id4~0 != ~id6~0;" "assume ~id4~0 != ~id7~0;" "assume ~id5~0 != ~id6~0;" "assume ~id5~0 != ~id7~0;" "assume ~id6~0 != ~id7~0;init_~tmp~0#1 := 1;" "init_#res#1 := init_~tmp~0#1;" "main_#t~ret33#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret33#1;havoc main_#t~ret33#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1;" "assume !(0 == assume_abort_if_not_~cond#1);" "havoc assume_abort_if_not_~cond#1;havoc assume_abort_if_not_#in~cond#1;assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;~p7_old~0 := ~nomsg~0;~p7_new~0 := ~nomsg~0;main_~i2~0#1 := 0;" [2025-01-10 08:00:16,668 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i2~0#1 < 14;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0;" "assume !(0 != ~mode1~0 % 256);~p1_new~0 := (if (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 <= 127 then (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 else (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 - 256);~mode1~0 := 1;" "havoc node1_~m1~0#1;assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0;" "assume !(0 != ~mode2~0 % 256);~p2_new~0 := (if (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 <= 127 then (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 else (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 - 256);~mode2~0 := 1;" "havoc node2_~m2~0#1;assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0;" "assume !(0 != ~mode3~0 % 256);~p3_new~0 := (if (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 <= 127 then (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 else (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 - 256);~mode3~0 := 1;" "havoc node3_~m3~0#1;assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0;" "assume !(0 != ~mode4~0 % 256);~p4_new~0 := (if (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 <= 127 then (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 else (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 - 256);~mode4~0 := 1;" "havoc node4_~m4~0#1;assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0;" "assume !(0 != ~mode5~0 % 256);~p5_new~0 := (if (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 <= 127 then (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 else (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 - 256);~mode5~0 := 1;" "havoc node5_~m5~0#1;assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0;" "assume !(0 != ~mode6~0 % 256);~p6_new~0 := (if (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 <= 127 then (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 else (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 - 256);~mode6~0 := 1;" "havoc node6_~m6~0#1;assume { :end_inline_node6 } true;assume { :begin_inline_node7 } true;havoc node7_~m7~0#1;havoc node7_~m7~0#1;node7_~m7~0#1 := ~nomsg~0;" "assume !(0 != ~mode7~0 % 256);~p7_new~0 := (if (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 <= 127 then (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 else (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 - 256);~mode7~0 := 1;" "havoc node7_~m7~0#1;assume { :end_inline_node7 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;~p7_old~0 := ~p7_new~0;~p7_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1;" "assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1;" "assume ~r1~0 >= 7;" "assume ~r1~0 < 7;check_~tmp~1#1 := 1;" "check_#res#1 := check_~tmp~1#1;" "main_#t~ret34#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret34#1;havoc main_#t~ret34#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1;" "assume !(0 == assert_~arg#1 % 256);" "havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true;main_#t~post35#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post35#1;havoc main_#t~post35#1;" [2025-01-10 08:00:16,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 08:00:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash 292839954, now seen corresponding path program 2 times [2025-01-10 08:00:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 08:00:16,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901121003] [2025-01-10 08:00:16,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 08:00:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 08:00:16,680 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 1 equivalence classes. [2025-01-10 08:00:16,722 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 08:00:16,723 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 08:00:16,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 08:00:16,723 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 08:00:16,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 08:00:16,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 08:00:16,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:16,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 08:00:16,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 08:00:16,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 08:00:16,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1465109422, now seen corresponding path program 1 times [2025-01-10 08:00:16,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 08:00:16,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513978332] [2025-01-10 08:00:16,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 08:00:16,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 08:00:16,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 08:00:16,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 08:00:16,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:16,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 08:00:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 08:00:16,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 08:00:16,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513978332] [2025-01-10 08:00:16,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513978332] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 08:00:16,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 08:00:16,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 08:00:16,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215777158] [2025-01-10 08:00:16,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 08:00:16,791 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-01-10 08:00:16,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 08:00:16,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 08:00:16,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 08:00:16,792 INFO L87 Difference]: Start difference. First operand 108 states and 138 transitions. cyclomatic complexity: 31 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 08:00:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 08:00:16,815 INFO L93 Difference]: Finished difference Result 154 states and 209 transitions. [2025-01-10 08:00:16,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 154 states and 209 transitions. [2025-01-10 08:00:16,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 98 [2025-01-10 08:00:16,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 154 states to 154 states and 209 transitions. [2025-01-10 08:00:16,819 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 154 [2025-01-10 08:00:16,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 154 [2025-01-10 08:00:16,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 209 transitions. [2025-01-10 08:00:16,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-01-10 08:00:16,821 INFO L218 hiAutomatonCegarLoop]: Abstraction has 154 states and 209 transitions. [2025-01-10 08:00:16,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 209 transitions. [2025-01-10 08:00:16,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2025-01-10 08:00:16,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 154 states have (on average 1.3571428571428572) internal successors, (209), 153 states have internal predecessors, (209), 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) [2025-01-10 08:00:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 209 transitions. [2025-01-10 08:00:16,829 INFO L240 hiAutomatonCegarLoop]: Abstraction has 154 states and 209 transitions. [2025-01-10 08:00:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 08:00:16,831 INFO L432 stractBuchiCegarLoop]: Abstraction has 154 states and 209 transitions. [2025-01-10 08:00:16,831 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-01-10 08:00:16,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 154 states and 209 transitions. [2025-01-10 08:00:16,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 98 [2025-01-10 08:00:16,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 08:00:16,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 08:00:16,834 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 08:00:16,834 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 08:00:16,834 INFO L752 eck$LassoCheckResult]: Stem: "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(33, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~p7~0 := 0;~p7_old~0 := 0;~p7_new~0 := 0;~id7~0 := 0;~st7~0 := 0;~send7~0 := 0;~mode7~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~ret33#1, main_#t~ret34#1, main_#t~post35#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;havoc main_#t~nondet4#1;~r1~0 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_#t~nondet5#1;~id1~0 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_#t~nondet6#1;~st1~0 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_#t~nondet7#1;~send1~0 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_#t~nondet8#1;assume 0 == main_#t~nondet8#1 || 1 == main_#t~nondet8#1;~mode1~0 := (if 0 == main_#t~nondet8#1 % 256 then 0 else 1);havoc main_#t~nondet8#1;havoc main_#t~nondet9#1;~id2~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_#t~nondet10#1;~st2~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_#t~nondet11#1;~send2~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_#t~nondet12#1;assume 0 == main_#t~nondet12#1 || 1 == main_#t~nondet12#1;~mode2~0 := (if 0 == main_#t~nondet12#1 % 256 then 0 else 1);havoc main_#t~nondet12#1;havoc main_#t~nondet13#1;~id3~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_#t~nondet14#1;~st3~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_#t~nondet15#1;~send3~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;assume 0 == main_#t~nondet16#1 || 1 == main_#t~nondet16#1;~mode3~0 := (if 0 == main_#t~nondet16#1 % 256 then 0 else 1);havoc main_#t~nondet16#1;havoc main_#t~nondet17#1;~id4~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;~st4~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_#t~nondet19#1;~send4~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_#t~nondet20#1;assume 0 == main_#t~nondet20#1 || 1 == main_#t~nondet20#1;~mode4~0 := (if 0 == main_#t~nondet20#1 % 256 then 0 else 1);havoc main_#t~nondet20#1;havoc main_#t~nondet21#1;~id5~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_#t~nondet22#1;~st5~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;havoc main_#t~nondet23#1;~send5~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;havoc main_#t~nondet24#1;assume 0 == main_#t~nondet24#1 || 1 == main_#t~nondet24#1;~mode5~0 := (if 0 == main_#t~nondet24#1 % 256 then 0 else 1);havoc main_#t~nondet24#1;havoc main_#t~nondet25#1;~id6~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;havoc main_#t~nondet26#1;~st6~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;havoc main_#t~nondet27#1;~send6~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;havoc main_#t~nondet28#1;assume 0 == main_#t~nondet28#1 || 1 == main_#t~nondet28#1;~mode6~0 := (if 0 == main_#t~nondet28#1 % 256 then 0 else 1);havoc main_#t~nondet28#1;havoc main_#t~nondet29#1;~id7~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;havoc main_#t~nondet30#1;~st7~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;havoc main_#t~nondet31#1;~send7~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;havoc main_#t~nondet32#1;assume 0 == main_#t~nondet32#1 || 1 == main_#t~nondet32#1;~mode7~0 := (if 0 == main_#t~nondet32#1 % 256 then 0 else 1);havoc main_#t~nondet32#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1;" "assume 0 == ~r1~0;" "assume ~id1~0 >= 0;" "assume 0 == ~st1~0;" "assume ~send1~0 == ~id1~0;" "assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296);" "assume ~id2~0 >= 0;" "assume 0 == ~st2~0;" "assume ~send2~0 == ~id2~0;" "assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296);" "assume ~id3~0 >= 0;" "assume 0 == ~st3~0;" "assume ~send3~0 == ~id3~0;" "assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296);" "assume ~id4~0 >= 0;" "assume 0 == ~st4~0;" "assume ~send4~0 == ~id4~0;" "assume 0 == (if ~mode4~0 % 256 % 4294967296 <= 2147483647 then ~mode4~0 % 256 % 4294967296 else ~mode4~0 % 256 % 4294967296 - 4294967296);" "assume ~id5~0 >= 0;" "assume 0 == ~st5~0;" "assume ~send5~0 == ~id5~0;" "assume 0 == (if ~mode5~0 % 256 % 4294967296 <= 2147483647 then ~mode5~0 % 256 % 4294967296 else ~mode5~0 % 256 % 4294967296 - 4294967296);" "assume ~id6~0 >= 0;" "assume 0 == ~st6~0;" "assume ~send6~0 == ~id6~0;" "assume 0 == (if ~mode6~0 % 256 % 4294967296 <= 2147483647 then ~mode6~0 % 256 % 4294967296 else ~mode6~0 % 256 % 4294967296 - 4294967296);" "assume ~id7~0 >= 0;" "assume 0 == ~st7~0;" "assume ~send7~0 == ~id7~0;" "assume 0 == (if ~mode7~0 % 256 % 4294967296 <= 2147483647 then ~mode7~0 % 256 % 4294967296 else ~mode7~0 % 256 % 4294967296 - 4294967296);" "assume ~id1~0 != ~id2~0;" "assume ~id1~0 != ~id3~0;" "assume ~id1~0 != ~id4~0;" "assume ~id1~0 != ~id5~0;" "assume ~id1~0 != ~id6~0;" "assume ~id1~0 != ~id7~0;" "assume ~id2~0 != ~id3~0;" "assume ~id2~0 != ~id4~0;" "assume ~id2~0 != ~id5~0;" "assume ~id2~0 != ~id6~0;" "assume ~id2~0 != ~id7~0;" "assume ~id3~0 != ~id4~0;" "assume ~id3~0 != ~id5~0;" "assume ~id3~0 != ~id6~0;" "assume ~id3~0 != ~id7~0;" "assume ~id4~0 != ~id5~0;" "assume ~id4~0 != ~id6~0;" "assume ~id4~0 != ~id7~0;" "assume ~id5~0 != ~id6~0;" "assume ~id5~0 != ~id7~0;" "assume ~id6~0 != ~id7~0;init_~tmp~0#1 := 1;" "init_#res#1 := init_~tmp~0#1;" "main_#t~ret33#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret33#1;havoc main_#t~ret33#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1;" "assume !(0 == assume_abort_if_not_~cond#1);" "havoc assume_abort_if_not_~cond#1;havoc assume_abort_if_not_#in~cond#1;assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;~p7_old~0 := ~nomsg~0;~p7_new~0 := ~nomsg~0;main_~i2~0#1 := 0;" [2025-01-10 08:00:16,834 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i2~0#1 < 14;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0;" "assume !(0 != ~mode1~0 % 256);~p1_new~0 := (if (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 <= 127 then (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 else (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 - 256);~mode1~0 := 1;" "havoc node1_~m1~0#1;assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0;" "assume !(0 != ~mode2~0 % 256);~p2_new~0 := (if (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 <= 127 then (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 else (if ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0 then ~send2~0 else ~p2_new~0) % 256 - 256);~mode2~0 := 1;" "havoc node2_~m2~0#1;assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0;" "assume !(0 != ~mode3~0 % 256);~p3_new~0 := (if (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 <= 127 then (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 else (if ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0 then ~send3~0 else ~p3_new~0) % 256 - 256);~mode3~0 := 1;" "havoc node3_~m3~0#1;assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0;" "assume !(0 != ~mode4~0 % 256);~p4_new~0 := (if (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 <= 127 then (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 else (if ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0 then ~send4~0 else ~p4_new~0) % 256 - 256);~mode4~0 := 1;" "havoc node4_~m4~0#1;assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0;" "assume !(0 != ~mode5~0 % 256);~p5_new~0 := (if (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 <= 127 then (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 else (if ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0 then ~send5~0 else ~p5_new~0) % 256 - 256);~mode5~0 := 1;" "havoc node5_~m5~0#1;assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0;" "assume !(0 != ~mode6~0 % 256);~p6_new~0 := (if (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 <= 127 then (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 else (if ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0 then ~send6~0 else ~p6_new~0) % 256 - 256);~mode6~0 := 1;" "havoc node6_~m6~0#1;assume { :end_inline_node6 } true;assume { :begin_inline_node7 } true;havoc node7_~m7~0#1;havoc node7_~m7~0#1;node7_~m7~0#1 := ~nomsg~0;" "assume !(0 != ~mode7~0 % 256);~p7_new~0 := (if (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 <= 127 then (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 else (if ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0 then ~send7~0 else ~p7_new~0) % 256 - 256);~mode7~0 := 1;" "havoc node7_~m7~0#1;assume { :end_inline_node7 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;~p7_old~0 := ~p7_new~0;~p7_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1;" "assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1;" "assume !(~r1~0 >= 7);" "assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0;" "assume ~r1~0 < 7;check_~tmp~1#1 := 1;" "check_#res#1 := check_~tmp~1#1;" "main_#t~ret34#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret34#1;havoc main_#t~ret34#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1;" "assume !(0 == assert_~arg#1 % 256);" "havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true;main_#t~post35#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post35#1;havoc main_#t~post35#1;" [2025-01-10 08:00:16,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 08:00:16,836 INFO L85 PathProgramCache]: Analyzing trace with hash 292839954, now seen corresponding path program 3 times [2025-01-10 08:00:16,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 08:00:16,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255251990] [2025-01-10 08:00:16,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 08:00:16,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 08:00:16,847 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 1 equivalence classes. [2025-01-10 08:00:16,861 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 08:00:16,861 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 08:00:16,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 08:00:16,861 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 08:00:16,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 08:00:16,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 08:00:16,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:16,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 08:00:16,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 08:00:16,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 08:00:16,882 INFO L85 PathProgramCache]: Analyzing trace with hash -822148931, now seen corresponding path program 1 times [2025-01-10 08:00:16,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 08:00:16,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021444463] [2025-01-10 08:00:16,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 08:00:16,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 08:00:16,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 08:00:16,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 08:00:16,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:16,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 08:00:16,908 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 08:00:16,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 08:00:16,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 08:00:16,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:16,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 08:00:16,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 08:00:16,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 08:00:16,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1344873588, now seen corresponding path program 1 times [2025-01-10 08:00:16,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 08:00:16,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159174044] [2025-01-10 08:00:16,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 08:00:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 08:00:16,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-10 08:00:16,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-10 08:00:16,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:16,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 08:00:16,978 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 08:00:16,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-10 08:00:17,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-10 08:00:17,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 08:00:17,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 08:00:17,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 08:00:21,633 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 08:00:21,633 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 08:00:21,634 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 08:00:21,634 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 08:00:21,634 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 08:00:21,634 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 08:00:21,634 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 08:00:21,634 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 08:00:21,634 INFO L132 ssoRankerPreferences]: Filename of dumped script: pals_lcr.7.ufo.BOUNDED-14.pals.c_Iteration4_Loop [2025-01-10 08:00:21,634 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 08:00:21,634 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 08:00:21,669 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:21,679 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:21,681 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:21,683 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:21,684 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:21,685 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:21,687 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:21,691 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:21,696 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:21,699 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,447 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,454 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,455 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,459 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,461 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,463 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,464 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,466 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,468 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,470 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,473 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,476 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:23,485 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 08:00:25,205 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 41