./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 d52f31574095462f7bebf0d97516364dd650b64428a7b12e3aa21d1b47f96325 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 17:52:08,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 17:52:08,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-13 17:52:08,793 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 17:52:08,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 17:52:08,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 17:52:08,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 17:52:08,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 17:52:08,816 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 17:52:08,817 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 17:52:08,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 17:52:08,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 17:52:08,817 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 17:52:08,818 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-13 17:52:08,818 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-13 17:52:08,820 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-13 17:52:08,820 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-13 17:52:08,822 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-13 17:52:08,822 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-13 17:52:08,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 17:52:08,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-13 17:52:08,825 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 17:52:08,825 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 17:52:08,825 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 17:52:08,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 17:52:08,826 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-13 17:52:08,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-13 17:52:08,826 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-13 17:52:08,826 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 17:52:08,826 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 17:52:08,826 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 17:52:08,827 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 17:52:08,827 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-13 17:52:08,827 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 17:52:08,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 17:52:08,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 17:52:08,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 17:52:08,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 17:52:08,828 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-13 17:52:08,828 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d52f31574095462f7bebf0d97516364dd650b64428a7b12e3aa21d1b47f96325 [2024-10-13 17:52:09,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 17:52:09,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 17:52:09,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 17:52:09,053 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 17:52:09,054 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 17:52:09,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2024-10-13 17:52:10,234 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 17:52:10,428 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 17:52:10,428 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2024-10-13 17:52:10,440 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d7f341ef/388690ba762043c9a63f26db1363d291/FLAGc928b3916 [2024-10-13 17:52:10,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d7f341ef/388690ba762043c9a63f26db1363d291 [2024-10-13 17:52:10,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 17:52:10,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 17:52:10,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 17:52:10,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 17:52:10,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 17:52:10,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b612e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10, skipping insertion in model container [2024-10-13 17:52:10,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,488 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 17:52:10,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 17:52:10,676 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 17:52:10,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 17:52:10,733 INFO L204 MainTranslator]: Completed translation [2024-10-13 17:52:10,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10 WrapperNode [2024-10-13 17:52:10,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 17:52:10,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 17:52:10,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 17:52:10,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 17:52:10,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,751 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,777 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 437 [2024-10-13 17:52:10,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 17:52:10,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 17:52:10,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 17:52:10,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 17:52:10,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,804 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 17:52:10,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,819 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 17:52:10,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 17:52:10,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 17:52:10,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 17:52:10,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (1/1) ... [2024-10-13 17:52:10,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 17:52:10,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 17:52:10,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 17:52:10,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-13 17:52:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 17:52:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 17:52:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 17:52:10,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 17:52:10,980 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 17:52:10,982 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 17:52:11,401 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-10-13 17:52:11,401 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 17:52:11,415 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 17:52:11,415 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 17:52:11,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:52:11 BoogieIcfgContainer [2024-10-13 17:52:11,416 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 17:52:11,417 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-13 17:52:11,417 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-13 17:52:11,419 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-13 17:52:11,420 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 17:52:11,420 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 05:52:10" (1/3) ... [2024-10-13 17:52:11,421 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14da25c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 05:52:11, skipping insertion in model container [2024-10-13 17:52:11,421 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 17:52:11,421 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:10" (2/3) ... [2024-10-13 17:52:11,421 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14da25c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 05:52:11, skipping insertion in model container [2024-10-13 17:52:11,421 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 17:52:11,421 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:52:11" (3/3) ... [2024-10-13 17:52:11,422 INFO L332 chiAutomizerObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2024-10-13 17:52:11,475 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-13 17:52:11,475 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-13 17:52:11,476 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-13 17:52:11,476 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-13 17:52:11,476 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-13 17:52:11,476 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-13 17:52:11,477 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-13 17:52:11,477 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-13 17:52:11,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 116 states, 115 states have (on average 1.7652173913043478) internal successors, (203), 115 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 17:52:11,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 56 [2024-10-13 17:52:11,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:52:11,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:52:11,513 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:52:11,513 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] [2024-10-13 17:52:11,513 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-13 17:52:11,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 116 states, 115 states have (on average 1.7652173913043478) internal successors, (203), 115 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 17:52:11,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 56 [2024-10-13 17:52:11,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:52:11,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:52:11,525 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:52:11,525 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] [2024-10-13 17:52:11,531 INFO L745 eck$LassoCheckResult]: Stem: 31#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(34, 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; 40#L-1true 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_~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; 67#L265true assume !(0 == (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296));init_~tmp~0#1 := 0; 104#L265-1true init_#res#1 := init_~tmp~0#1; 84#init_returnLabel#1true 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; 41#L22true assume !(0 == assume_abort_if_not_~cond#1); 90#L21true 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; 17#L550-2true [2024-10-13 17:52:11,536 INFO L747 eck$LassoCheckResult]: Loop: 17#L550-2true assume !false;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 38#L85true 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; 7#L85-2true 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; 28#L116true 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; 101#L116-2true 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; 43#L141true 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; 103#L141-2true 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; 85#L166true 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; 80#L166-2true 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; 75#L191true 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; 69#L191-2true 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; 94#L216true 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; 23#L216-2true 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; 29#L241true 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; 52#L241-2true 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; 49#L474true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1);check_~tmp~1#1 := 0; 15#L474-1true check_#res#1 := check_~tmp~1#1; 18#check_returnLabel#1true 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; 72#L585true assume !(0 == assert_~arg#1 % 256); 3#L580true havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true; 17#L550-2true [2024-10-13 17:52:11,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:52:11,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2087378158, now seen corresponding path program 1 times [2024-10-13 17:52:11,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:52:11,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92190902] [2024-10-13 17:52:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:52:11,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:52:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:52:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:52:11,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:52:11,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92190902] [2024-10-13 17:52:11,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92190902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:52:11,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:52:11,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 17:52:11,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563731191] [2024-10-13 17:52:11,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:52:11,849 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-13 17:52:11,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:52:11,851 INFO L85 PathProgramCache]: Analyzing trace with hash 873411849, now seen corresponding path program 1 times [2024-10-13 17:52:11,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:52:11,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818664295] [2024-10-13 17:52:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:52:11,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:52:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:52:12,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:52:12,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:52:12,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818664295] [2024-10-13 17:52:12,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818664295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:52:12,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:52:12,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 17:52:12,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906436951] [2024-10-13 17:52:12,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:52:12,178 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:52:12,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:52:12,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 17:52:12,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 17:52:12,209 INFO L87 Difference]: Start difference. First operand has 116 states, 115 states have (on average 1.7652173913043478) internal successors, (203), 115 states have internal predecessors, (203), 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) [2024-10-13 17:52:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:52:12,300 INFO L93 Difference]: Finished difference Result 114 states and 197 transitions. [2024-10-13 17:52:12,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 114 states and 197 transitions. [2024-10-13 17:52:12,306 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 54 [2024-10-13 17:52:12,311 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 114 states to 110 states and 144 transitions. [2024-10-13 17:52:12,311 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110 [2024-10-13 17:52:12,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110 [2024-10-13 17:52:12,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 144 transitions. [2024-10-13 17:52:12,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:52:12,314 INFO L218 hiAutomatonCegarLoop]: Abstraction has 110 states and 144 transitions. [2024-10-13 17:52:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 144 transitions. [2024-10-13 17:52:12,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-10-13 17:52:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.309090909090909) internal successors, (144), 109 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 17:52:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2024-10-13 17:52:12,340 INFO L240 hiAutomatonCegarLoop]: Abstraction has 110 states and 144 transitions. [2024-10-13 17:52:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 17:52:12,343 INFO L425 stractBuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2024-10-13 17:52:12,343 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-13 17:52:12,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 144 transitions. [2024-10-13 17:52:12,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 54 [2024-10-13 17:52:12,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:52:12,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:52:12,347 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] [2024-10-13 17:52:12,347 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] [2024-10-13 17:52:12,347 INFO L745 eck$LassoCheckResult]: Stem: 290#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(34, 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; 291#L-1 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_~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; 302#L265 assume 0 == (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296); 268#L266 assume ~id1~0 >= 0; 269#L267 assume 0 == ~st1~0; 275#L268 assume ~send1~0 == ~id1~0; 276#L269 assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296); 264#L270 assume ~id2~0 >= 0; 265#L271 assume 0 == ~st2~0; 294#L272 assume ~send2~0 == ~id2~0; 305#L273 assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296); 319#L274 assume ~id3~0 >= 0; 342#L275 assume 0 == ~st3~0; 248#L276 assume ~send3~0 == ~id3~0; 249#L277 assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296); 353#L278 assume ~id4~0 >= 0; 312#L279 assume 0 == ~st4~0; 313#L280 assume ~send4~0 == ~id4~0; 272#L281 assume 0 == (if ~mode4~0 % 256 % 4294967296 <= 2147483647 then ~mode4~0 % 256 % 4294967296 else ~mode4~0 % 256 % 4294967296 - 4294967296); 250#L282 assume ~id5~0 >= 0; 251#L283 assume 0 == ~st5~0; 320#L284 assume ~send5~0 == ~id5~0; 321#L285 assume 0 == (if ~mode5~0 % 256 % 4294967296 <= 2147483647 then ~mode5~0 % 256 % 4294967296 else ~mode5~0 % 256 % 4294967296 - 4294967296); 341#L286 assume ~id6~0 >= 0; 327#L287 assume 0 == ~st6~0; 283#L288 assume ~send6~0 == ~id6~0; 284#L289 assume 0 == (if ~mode6~0 % 256 % 4294967296 <= 2147483647 then ~mode6~0 % 256 % 4294967296 else ~mode6~0 % 256 % 4294967296 - 4294967296); 296#L290 assume ~id7~0 >= 0; 335#L291 assume 0 == ~st7~0; 336#L292 assume ~send7~0 == ~id7~0; 343#L293 assume 0 == (if ~mode7~0 % 256 % 4294967296 <= 2147483647 then ~mode7~0 % 256 % 4294967296 else ~mode7~0 % 256 % 4294967296 - 4294967296); 352#L294 assume ~id1~0 != ~id2~0; 254#L295 assume ~id1~0 != ~id3~0; 255#L296 assume ~id1~0 != ~id4~0; 295#L297 assume ~id1~0 != ~id5~0; 292#L298 assume ~id1~0 != ~id6~0; 293#L299 assume ~id1~0 != ~id7~0; 301#L300 assume ~id2~0 != ~id3~0; 328#L301 assume ~id2~0 != ~id4~0; 339#L302 assume ~id2~0 != ~id5~0; 340#L303 assume ~id2~0 != ~id6~0; 348#L304 assume ~id2~0 != ~id7~0; 322#L305 assume ~id3~0 != ~id4~0; 323#L306 assume ~id3~0 != ~id5~0; 334#L307 assume ~id3~0 != ~id6~0; 266#L308 assume ~id3~0 != ~id7~0; 267#L309 assume ~id4~0 != ~id5~0; 333#L310 assume ~id4~0 != ~id6~0; 308#L311 assume ~id4~0 != ~id7~0; 309#L312 assume ~id5~0 != ~id6~0; 279#L313 assume ~id5~0 != ~id7~0; 280#L314 assume ~id6~0 != ~id7~0;init_~tmp~0#1 := 1; 350#L265-1 init_#res#1 := init_~tmp~0#1; 344#init_returnLabel#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; 303#L22 assume !(0 == assume_abort_if_not_~cond#1); 304#L21 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; 245#L550-2 [2024-10-13 17:52:12,348 INFO L747 eck$LassoCheckResult]: Loop: 245#L550-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 273#L85 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; 252#L85-2 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; 253#L116 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; 286#L116-2 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; 306#L141 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; 300#L141-2 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; 345#L166 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; 311#L166-2 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; 337#L191 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; 257#L191-2 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; 330#L216 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; 281#L216-2 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; 282#L241 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; 285#L241-2 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; 314#L474 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1);check_~tmp~1#1 := 0; 270#L474-1 check_#res#1 := check_~tmp~1#1; 271#check_returnLabel#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; 274#L585 assume !(0 == assert_~arg#1 % 256); 244#L580 havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true; 245#L550-2 [2024-10-13 17:52:12,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:52:12,348 INFO L85 PathProgramCache]: Analyzing trace with hash 292839954, now seen corresponding path program 1 times [2024-10-13 17:52:12,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:52:12,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042998509] [2024-10-13 17:52:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:52:12,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:52:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:52:12,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:52:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:52:12,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:52:12,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:52:12,452 INFO L85 PathProgramCache]: Analyzing trace with hash 873411849, now seen corresponding path program 2 times [2024-10-13 17:52:12,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:52:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864429350] [2024-10-13 17:52:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:52:12,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:52:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:52:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:52:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:52:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864429350] [2024-10-13 17:52:12,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864429350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:52:12,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:52:12,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 17:52:12,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447947569] [2024-10-13 17:52:12,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:52:12,651 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:52:12,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:52:12,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 17:52:12,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 17:52:12,652 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. cyclomatic complexity: 35 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) [2024-10-13 17:52:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:52:12,677 INFO L93 Difference]: Finished difference Result 113 states and 146 transitions. [2024-10-13 17:52:12,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 146 transitions. [2024-10-13 17:52:12,678 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 54 [2024-10-13 17:52:12,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 110 states and 141 transitions. [2024-10-13 17:52:12,679 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110 [2024-10-13 17:52:12,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110 [2024-10-13 17:52:12,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 141 transitions. [2024-10-13 17:52:12,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:52:12,680 INFO L218 hiAutomatonCegarLoop]: Abstraction has 110 states and 141 transitions. [2024-10-13 17:52:12,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 141 transitions. [2024-10-13 17:52:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-10-13 17:52:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.2818181818181817) internal successors, (141), 109 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) [2024-10-13 17:52:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2024-10-13 17:52:12,683 INFO L240 hiAutomatonCegarLoop]: Abstraction has 110 states and 141 transitions. [2024-10-13 17:52:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 17:52:12,684 INFO L425 stractBuchiCegarLoop]: Abstraction has 110 states and 141 transitions. [2024-10-13 17:52:12,684 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-13 17:52:12,684 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 141 transitions. [2024-10-13 17:52:12,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 54 [2024-10-13 17:52:12,685 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:52:12,685 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:52:12,686 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] [2024-10-13 17:52:12,686 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] [2024-10-13 17:52:12,686 INFO L745 eck$LassoCheckResult]: Stem: 521#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(34, 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; 522#L-1 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_~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; 533#L265 assume 0 == (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296); 499#L266 assume ~id1~0 >= 0; 500#L267 assume 0 == ~st1~0; 506#L268 assume ~send1~0 == ~id1~0; 507#L269 assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296); 495#L270 assume ~id2~0 >= 0; 496#L271 assume 0 == ~st2~0; 525#L272 assume ~send2~0 == ~id2~0; 536#L273 assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296); 550#L274 assume ~id3~0 >= 0; 573#L275 assume 0 == ~st3~0; 479#L276 assume ~send3~0 == ~id3~0; 480#L277 assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296); 584#L278 assume ~id4~0 >= 0; 543#L279 assume 0 == ~st4~0; 544#L280 assume ~send4~0 == ~id4~0; 503#L281 assume 0 == (if ~mode4~0 % 256 % 4294967296 <= 2147483647 then ~mode4~0 % 256 % 4294967296 else ~mode4~0 % 256 % 4294967296 - 4294967296); 481#L282 assume ~id5~0 >= 0; 482#L283 assume 0 == ~st5~0; 551#L284 assume ~send5~0 == ~id5~0; 552#L285 assume 0 == (if ~mode5~0 % 256 % 4294967296 <= 2147483647 then ~mode5~0 % 256 % 4294967296 else ~mode5~0 % 256 % 4294967296 - 4294967296); 572#L286 assume ~id6~0 >= 0; 558#L287 assume 0 == ~st6~0; 514#L288 assume ~send6~0 == ~id6~0; 515#L289 assume 0 == (if ~mode6~0 % 256 % 4294967296 <= 2147483647 then ~mode6~0 % 256 % 4294967296 else ~mode6~0 % 256 % 4294967296 - 4294967296); 527#L290 assume ~id7~0 >= 0; 566#L291 assume 0 == ~st7~0; 567#L292 assume ~send7~0 == ~id7~0; 574#L293 assume 0 == (if ~mode7~0 % 256 % 4294967296 <= 2147483647 then ~mode7~0 % 256 % 4294967296 else ~mode7~0 % 256 % 4294967296 - 4294967296); 583#L294 assume ~id1~0 != ~id2~0; 485#L295 assume ~id1~0 != ~id3~0; 486#L296 assume ~id1~0 != ~id4~0; 526#L297 assume ~id1~0 != ~id5~0; 523#L298 assume ~id1~0 != ~id6~0; 524#L299 assume ~id1~0 != ~id7~0; 532#L300 assume ~id2~0 != ~id3~0; 559#L301 assume ~id2~0 != ~id4~0; 570#L302 assume ~id2~0 != ~id5~0; 571#L303 assume ~id2~0 != ~id6~0; 579#L304 assume ~id2~0 != ~id7~0; 553#L305 assume ~id3~0 != ~id4~0; 554#L306 assume ~id3~0 != ~id5~0; 565#L307 assume ~id3~0 != ~id6~0; 497#L308 assume ~id3~0 != ~id7~0; 498#L309 assume ~id4~0 != ~id5~0; 564#L310 assume ~id4~0 != ~id6~0; 539#L311 assume ~id4~0 != ~id7~0; 540#L312 assume ~id5~0 != ~id6~0; 510#L313 assume ~id5~0 != ~id7~0; 511#L314 assume ~id6~0 != ~id7~0;init_~tmp~0#1 := 1; 581#L265-1 init_#res#1 := init_~tmp~0#1; 575#init_returnLabel#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; 534#L22 assume !(0 == assume_abort_if_not_~cond#1); 535#L21 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; 476#L550-2 [2024-10-13 17:52:12,687 INFO L747 eck$LassoCheckResult]: Loop: 476#L550-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 504#L85 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; 483#L85-2 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; 484#L116 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; 517#L116-2 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; 537#L141 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; 531#L141-2 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; 576#L166 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; 542#L166-2 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; 568#L191 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; 488#L191-2 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; 561#L216 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; 512#L216-2 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; 513#L241 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; 516#L241-2 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; 545#L474 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1; 546#L475 assume (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296) >= 7; 562#$Ultimate##253 assume (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296) < 7;check_~tmp~1#1 := 1; 501#L474-1 check_#res#1 := check_~tmp~1#1; 502#check_returnLabel#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; 505#L585 assume !(0 == assert_~arg#1 % 256); 475#L580 havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true; 476#L550-2 [2024-10-13 17:52:12,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:52:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash 292839954, now seen corresponding path program 2 times [2024-10-13 17:52:12,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:52:12,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490344215] [2024-10-13 17:52:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:52:12,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:52:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:52:12,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:52:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:52:12,735 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:52:12,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:52:12,735 INFO L85 PathProgramCache]: Analyzing trace with hash 414288505, now seen corresponding path program 1 times [2024-10-13 17:52:12,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:52:12,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743723309] [2024-10-13 17:52:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:52:12,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:52:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:52:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:52:12,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:52:12,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743723309] [2024-10-13 17:52:12,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743723309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:52:12,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:52:12,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:52:12,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523132840] [2024-10-13 17:52:12,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:52:12,768 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:52:12,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:52:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:52:12,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:52:12,768 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. cyclomatic complexity: 32 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) [2024-10-13 17:52:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:52:12,798 INFO L93 Difference]: Finished difference Result 158 states and 215 transitions. [2024-10-13 17:52:12,798 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 215 transitions. [2024-10-13 17:52:12,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 102 [2024-10-13 17:52:12,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 158 states and 215 transitions. [2024-10-13 17:52:12,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 158 [2024-10-13 17:52:12,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 158 [2024-10-13 17:52:12,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 158 states and 215 transitions. [2024-10-13 17:52:12,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:52:12,801 INFO L218 hiAutomatonCegarLoop]: Abstraction has 158 states and 215 transitions. [2024-10-13 17:52:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states and 215 transitions. [2024-10-13 17:52:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2024-10-13 17:52:12,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 156 states have (on average 1.358974358974359) internal successors, (212), 155 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 17:52:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 212 transitions. [2024-10-13 17:52:12,806 INFO L240 hiAutomatonCegarLoop]: Abstraction has 156 states and 212 transitions. [2024-10-13 17:52:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:52:12,807 INFO L425 stractBuchiCegarLoop]: Abstraction has 156 states and 212 transitions. [2024-10-13 17:52:12,807 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-13 17:52:12,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 156 states and 212 transitions. [2024-10-13 17:52:12,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 100 [2024-10-13 17:52:12,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:52:12,808 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:52:12,809 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] [2024-10-13 17:52:12,809 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] [2024-10-13 17:52:12,810 INFO L745 eck$LassoCheckResult]: Stem: 795#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(34, 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; 796#L-1 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_~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; 807#L265 assume 0 == (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296); 773#L266 assume ~id1~0 >= 0; 774#L267 assume 0 == ~st1~0; 780#L268 assume ~send1~0 == ~id1~0; 781#L269 assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296); 769#L270 assume ~id2~0 >= 0; 770#L271 assume 0 == ~st2~0; 799#L272 assume ~send2~0 == ~id2~0; 810#L273 assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296); 824#L274 assume ~id3~0 >= 0; 848#L275 assume 0 == ~st3~0; 753#L276 assume ~send3~0 == ~id3~0; 754#L277 assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296); 862#L278 assume ~id4~0 >= 0; 817#L279 assume 0 == ~st4~0; 818#L280 assume ~send4~0 == ~id4~0; 777#L281 assume 0 == (if ~mode4~0 % 256 % 4294967296 <= 2147483647 then ~mode4~0 % 256 % 4294967296 else ~mode4~0 % 256 % 4294967296 - 4294967296); 755#L282 assume ~id5~0 >= 0; 756#L283 assume 0 == ~st5~0; 825#L284 assume ~send5~0 == ~id5~0; 826#L285 assume 0 == (if ~mode5~0 % 256 % 4294967296 <= 2147483647 then ~mode5~0 % 256 % 4294967296 else ~mode5~0 % 256 % 4294967296 - 4294967296); 846#L286 assume ~id6~0 >= 0; 832#L287 assume 0 == ~st6~0; 788#L288 assume ~send6~0 == ~id6~0; 789#L289 assume 0 == (if ~mode6~0 % 256 % 4294967296 <= 2147483647 then ~mode6~0 % 256 % 4294967296 else ~mode6~0 % 256 % 4294967296 - 4294967296); 801#L290 assume ~id7~0 >= 0; 839#L291 assume 0 == ~st7~0; 840#L292 assume ~send7~0 == ~id7~0; 849#L293 assume 0 == (if ~mode7~0 % 256 % 4294967296 <= 2147483647 then ~mode7~0 % 256 % 4294967296 else ~mode7~0 % 256 % 4294967296 - 4294967296); 861#L294 assume ~id1~0 != ~id2~0; 759#L295 assume ~id1~0 != ~id3~0; 760#L296 assume ~id1~0 != ~id4~0; 800#L297 assume ~id1~0 != ~id5~0; 797#L298 assume ~id1~0 != ~id6~0; 798#L299 assume ~id1~0 != ~id7~0; 806#L300 assume ~id2~0 != ~id3~0; 833#L301 assume ~id2~0 != ~id4~0; 844#L302 assume ~id2~0 != ~id5~0; 845#L303 assume ~id2~0 != ~id6~0; 855#L304 assume ~id2~0 != ~id7~0; 827#L305 assume ~id3~0 != ~id4~0; 828#L306 assume ~id3~0 != ~id5~0; 838#L307 assume ~id3~0 != ~id6~0; 771#L308 assume ~id3~0 != ~id7~0; 772#L309 assume ~id4~0 != ~id5~0; 837#L310 assume ~id4~0 != ~id6~0; 813#L311 assume ~id4~0 != ~id7~0; 814#L312 assume ~id5~0 != ~id6~0; 784#L313 assume ~id5~0 != ~id7~0; 785#L314 assume ~id6~0 != ~id7~0;init_~tmp~0#1 := 1; 859#L265-1 init_#res#1 := init_~tmp~0#1; 850#init_returnLabel#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; 808#L22 assume !(0 == assume_abort_if_not_~cond#1); 809#L21 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; 854#L550-2 [2024-10-13 17:52:12,810 INFO L747 eck$LassoCheckResult]: Loop: 854#L550-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 900#L85 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; 856#L85-2 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; 896#L116 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; 894#L116-2 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; 890#L141 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; 884#L141-2 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; 882#L166 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; 880#L166-2 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; 841#L191 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; 762#L191-2 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; 835#L216 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; 874#L216-2 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; 870#L241 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; 868#L241-2 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; 867#L474 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1; 866#L475 assume !((if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296) >= 7); 864#L478 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0; 865#$Ultimate##253 assume (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296) < 7;check_~tmp~1#1 := 1; 904#L474-1 check_#res#1 := check_~tmp~1#1; 903#check_returnLabel#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; 902#L585 assume !(0 == assert_~arg#1 % 256); 901#L580 havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true; 854#L550-2 [2024-10-13 17:52:12,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:52:12,810 INFO L85 PathProgramCache]: Analyzing trace with hash 292839954, now seen corresponding path program 3 times [2024-10-13 17:52:12,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:52:12,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981027116] [2024-10-13 17:52:12,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:52:12,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:52:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:52:12,835 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:52:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:52:12,871 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:52:12,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:52:12,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1604611970, now seen corresponding path program 1 times [2024-10-13 17:52:12,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:52:12,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747346787] [2024-10-13 17:52:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:52:12,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:52:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:52:12,903 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:52:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:52:12,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:52:12,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:52:12,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1081887313, now seen corresponding path program 1 times [2024-10-13 17:52:12,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:52:12,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745527707] [2024-10-13 17:52:12,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:52:12,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:52:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:52:13,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:52:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:52:13,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:52:16,819 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 17:52:16,820 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 17:52:16,820 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 17:52:16,820 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 17:52:16,820 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-13 17:52:16,820 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 17:52:16,820 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 17:52:16,820 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 17:52:16,820 INFO L132 ssoRankerPreferences]: Filename of dumped script: pals_lcr.7.1.ufo.UNBOUNDED.pals.c_Iteration4_Loop [2024-10-13 17:52:16,820 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 17:52:16,820 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 17:52:16,860 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,873 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,877 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,878 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,880 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,882 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,884 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,887 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,891 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,892 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,894 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,895 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,897 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,900 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,907 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,909 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,913 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:16,918 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:18,749 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:18,752 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 17:52:20,566 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 42