./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/seq-mthreaded/pals_lcr.4_overflow.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 8cf9a91c8f1111f4616406dfb4a7fdeef392d21e591ff8d6357140f3015668db --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 08:59:33,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 08:59:33,833 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-17 08:59:33,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 08:59:33,837 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 08:59:33,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-17 08:59:33,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 08:59:33,873 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 08:59:33,873 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 08:59:33,874 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 08:59:33,874 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 08:59:33,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 08:59:33,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 08:59:33,876 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 08:59:33,876 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-17 08:59:33,876 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-17 08:59:33,877 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-17 08:59:33,877 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-17 08:59:33,877 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-17 08:59:33,878 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-17 08:59:33,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 08:59:33,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-17 08:59:33,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 08:59:33,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 08:59:33,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 08:59:33,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 08:59:33,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-17 08:59:33,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-17 08:59:33,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-17 08:59:33,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 08:59:33,884 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 08:59:33,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 08:59:33,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 08:59:33,885 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-17 08:59:33,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 08:59:33,885 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 08:59:33,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 08:59:33,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 08:59:33,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 08:59:33,890 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-17 08:59:33,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cf9a91c8f1111f4616406dfb4a7fdeef392d21e591ff8d6357140f3015668db [2024-11-17 08:59:34,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 08:59:34,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 08:59:34,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 08:59:34,160 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 08:59:34,161 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 08:59:34,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2024-11-17 08:59:35,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 08:59:35,865 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 08:59:35,867 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2024-11-17 08:59:35,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45f70c774/9b8c5c316b8641a58046ef0eec08ab9f/FLAGea2c95cdc [2024-11-17 08:59:35,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45f70c774/9b8c5c316b8641a58046ef0eec08ab9f [2024-11-17 08:59:35,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 08:59:35,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 08:59:35,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 08:59:35,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 08:59:35,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 08:59:35,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:59:35" (1/1) ... [2024-11-17 08:59:35,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de641f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:35, skipping insertion in model container [2024-11-17 08:59:35,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:59:35" (1/1) ... [2024-11-17 08:59:35,928 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 08:59:36,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:59:36,139 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 08:59:36,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:59:36,196 INFO L204 MainTranslator]: Completed translation [2024-11-17 08:59:36,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36 WrapperNode [2024-11-17 08:59:36,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 08:59:36,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 08:59:36,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 08:59:36,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 08:59:36,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,211 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,232 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 262 [2024-11-17 08:59:36,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 08:59:36,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 08:59:36,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 08:59:36,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 08:59:36,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,264 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-17 08:59:36,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,274 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 08:59:36,280 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 08:59:36,280 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 08:59:36,280 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 08:59:36,281 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (1/1) ... [2024-11-17 08:59:36,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:59:36,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:59:36,331 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) [2024-11-17 08:59:36,341 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 [2024-11-17 08:59:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 08:59:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 08:59:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 08:59:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 08:59:36,478 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 08:59:36,480 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 08:59:36,829 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-17 08:59:36,829 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 08:59:36,843 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 08:59:36,843 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 08:59:36,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:59:36 BoogieIcfgContainer [2024-11-17 08:59:36,843 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 08:59:36,844 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-17 08:59:36,844 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-17 08:59:36,848 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-17 08:59:36,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:59:36,849 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.11 08:59:35" (1/3) ... [2024-11-17 08:59:36,850 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b7aa086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:59:36, skipping insertion in model container [2024-11-17 08:59:36,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:59:36,850 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:59:36" (2/3) ... [2024-11-17 08:59:36,850 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b7aa086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:59:36, skipping insertion in model container [2024-11-17 08:59:36,851 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:59:36,851 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:59:36" (3/3) ... [2024-11-17 08:59:36,852 INFO L332 chiAutomizerObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2024-11-17 08:59:36,909 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-17 08:59:36,910 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-17 08:59:36,910 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-17 08:59:36,910 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-17 08:59:36,910 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-17 08:59:36,911 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-17 08:59:36,911 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-17 08:59:36,911 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-17 08:59:36,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 71 states, 70 states have (on average 1.6857142857142857) internal successors, (118), 70 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:59:36,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2024-11-17 08:59:36,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:59:36,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:59:36,942 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:59:36,942 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:59:36,943 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-17 08:59:36,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 71 states, 70 states have (on average 1.6857142857142857) internal successors, (118), 70 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:59:36,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2024-11-17 08:59:36,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:59:36,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:59:36,949 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:59:36,949 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:59:36,954 INFO L745 eck$LassoCheckResult]: Stem: 54#ULTIMATE.startENTRYtrue 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(41, 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; 31#ULTIMATE.init_returnLabel#1true assume true;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~ret21#1, main_#t~ret22#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;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 26#L166true assume !(0 == (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296));init_~tmp~0#1 := 0; 60#L259-1true init_#res#1 := init_~tmp~0#1; 4#L259true assume true;main_#t~ret21#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret21#1;havoc main_#t~ret21#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; 52#L24true assume !(0 == assume_abort_if_not_~cond#1); 27#assume_abort_if_not_returnLabel#1true assume true;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;main_~i2~0#1 := 0; 71#L325true [2024-11-17 08:59:36,955 INFO L747 eck$LassoCheckResult]: Loop: 71#L325true assume true; 42#L325-1true assume !false;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 41#L66true 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; 25#L83true assume true;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; 48#L92true 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; 24#L108true assume true;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; 10#L117true 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; 47#L133true assume true;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; 38#L142true 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; 14#L158true assume true;havoc node4_~m4~0#1;assume { :end_inline_node4 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 28#L267true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1#1 := 0; 65#L287-1true check_#res#1 := check_~tmp~1#1; 68#L287true assume true;main_#t~ret22#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret22#1;havoc main_#t~ret22#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; 5#L351true assume !(0 == assert_~arg#1 % 256); 18#assert_returnLabel#1true assume true;havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true; 71#L325true [2024-11-17 08:59:36,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:59:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1298793239, now seen corresponding path program 1 times [2024-11-17 08:59:36,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:59:36,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566745250] [2024-11-17 08:59:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:59:36,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:59:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:59:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:59:37,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:59:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566745250] [2024-11-17 08:59:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566745250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 08:59:37,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 08:59:37,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 08:59:37,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722932849] [2024-11-17 08:59:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 08:59:37,312 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-17 08:59:37,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:59:37,313 INFO L85 PathProgramCache]: Analyzing trace with hash -326805769, now seen corresponding path program 1 times [2024-11-17 08:59:37,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:59:37,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207963611] [2024-11-17 08:59:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:59:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:59:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:59:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:59:37,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:59:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207963611] [2024-11-17 08:59:37,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207963611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 08:59:37,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 08:59:37,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 08:59:37,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281063914] [2024-11-17 08:59:37,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 08:59:37,627 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-17 08:59:37,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:59:37,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 08:59:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 08:59:37,663 INFO L87 Difference]: Start difference. First operand has 71 states, 70 states have (on average 1.6857142857142857) internal successors, (118), 70 states have internal predecessors, (118), 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) [2024-11-17 08:59:37,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:59:37,735 INFO L93 Difference]: Finished difference Result 69 states and 112 transitions. [2024-11-17 08:59:37,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 112 transitions. [2024-11-17 08:59:37,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2024-11-17 08:59:37,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 65 states and 86 transitions. [2024-11-17 08:59:37,754 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2024-11-17 08:59:37,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2024-11-17 08:59:37,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 86 transitions. [2024-11-17 08:59:37,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-17 08:59:37,756 INFO L218 hiAutomatonCegarLoop]: Abstraction has 65 states and 86 transitions. [2024-11-17 08:59:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 86 transitions. [2024-11-17 08:59:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-17 08:59:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.323076923076923) internal successors, (86), 64 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:59:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2024-11-17 08:59:37,787 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65 states and 86 transitions. [2024-11-17 08:59:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 08:59:37,792 INFO L425 stractBuchiCegarLoop]: Abstraction has 65 states and 86 transitions. [2024-11-17 08:59:37,793 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-17 08:59:37,793 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 86 transitions. [2024-11-17 08:59:37,794 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2024-11-17 08:59:37,794 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:59:37,794 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:59:37,795 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] [2024-11-17 08:59:37,795 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:59:37,796 INFO L745 eck$LassoCheckResult]: Stem: 213#ULTIMATE.startENTRY 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(41, 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; 197#ULTIMATE.init_returnLabel#1 assume true;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~ret21#1, main_#t~ret22#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;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 194#L166 assume 0 == (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296); 184#L167 assume ~id1~0 >= 0; 164#L168 assume 0 == ~st1~0; 165#L169 assume ~send1~0 == ~id1~0; 216#L170 assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296); 211#L171 assume ~id2~0 >= 0; 208#L172 assume 0 == ~st2~0; 209#L173 assume ~send2~0 == ~id2~0; 215#L174 assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296); 162#L175 assume ~id3~0 >= 0; 163#L176 assume 0 == ~st3~0; 212#L177 assume ~send3~0 == ~id3~0; 200#L178 assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296); 201#L179 assume ~id4~0 >= 0; 154#L180 assume 0 == ~st4~0; 155#L181 assume ~send4~0 == ~id4~0; 198#L182 assume 0 == (if ~mode4~0 % 256 % 4294967296 <= 2147483647 then ~mode4~0 % 256 % 4294967296 else ~mode4~0 % 256 % 4294967296 - 4294967296); 199#L183 assume ~id1~0 != ~id2~0; 177#L184 assume ~id1~0 != ~id3~0; 178#L185 assume ~id1~0 != ~id4~0; 202#L186 assume ~id2~0 != ~id3~0; 214#L187 assume ~id2~0 != ~id4~0; 179#L188 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 180#L259-1 init_#res#1 := init_~tmp~0#1; 158#L259 assume true;main_#t~ret21#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret21#1;havoc main_#t~ret21#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; 159#L24 assume !(0 == assume_abort_if_not_~cond#1); 195#assume_abort_if_not_returnLabel#1 assume true;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;main_~i2~0#1 := 0; 181#L325 [2024-11-17 08:59:37,797 INFO L747 eck$LassoCheckResult]: Loop: 181#L325 assume true; 207#L325-1 assume !false;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 205#L66 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; 191#L83 assume true;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; 193#L92 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; 192#L108 assume true;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; 168#L117 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; 170#L133 assume true;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; 203#L142 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; 173#L158 assume true;havoc node4_~m4~0#1;assume { :end_inline_node4 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 176#L267 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1#1 := 0; 161#L287-1 check_#res#1 := check_~tmp~1#1; 218#L287 assume true;main_#t~ret22#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret22#1;havoc main_#t~ret22#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; 156#L351 assume !(0 == assert_~arg#1 % 256); 157#assert_returnLabel#1 assume true;havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true; 181#L325 [2024-11-17 08:59:37,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:59:37,797 INFO L85 PathProgramCache]: Analyzing trace with hash 272939201, now seen corresponding path program 1 times [2024-11-17 08:59:37,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:59:37,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609713497] [2024-11-17 08:59:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:59:37,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:59:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:59:37,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:59:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:59:37,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:59:37,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:59:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash -326805769, now seen corresponding path program 2 times [2024-11-17 08:59:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:59:37,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25547535] [2024-11-17 08:59:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:59:37,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:59:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:59:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:59:38,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:59:38,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25547535] [2024-11-17 08:59:38,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25547535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 08:59:38,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 08:59:38,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 08:59:38,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691657534] [2024-11-17 08:59:38,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 08:59:38,142 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-17 08:59:38,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:59:38,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 08:59:38,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 08:59:38,144 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. cyclomatic complexity: 22 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:59:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:59:38,180 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2024-11-17 08:59:38,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2024-11-17 08:59:38,182 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2024-11-17 08:59:38,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 65 states and 83 transitions. [2024-11-17 08:59:38,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2024-11-17 08:59:38,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2024-11-17 08:59:38,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 83 transitions. [2024-11-17 08:59:38,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-17 08:59:38,184 INFO L218 hiAutomatonCegarLoop]: Abstraction has 65 states and 83 transitions. [2024-11-17 08:59:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 83 transitions. [2024-11-17 08:59:38,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-17 08:59:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 64 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:59:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2024-11-17 08:59:38,196 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65 states and 83 transitions. [2024-11-17 08:59:38,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 08:59:38,197 INFO L425 stractBuchiCegarLoop]: Abstraction has 65 states and 83 transitions. [2024-11-17 08:59:38,198 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-17 08:59:38,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 83 transitions. [2024-11-17 08:59:38,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2024-11-17 08:59:38,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:59:38,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:59:38,204 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] [2024-11-17 08:59:38,204 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:59:38,205 INFO L745 eck$LassoCheckResult]: Stem: 354#ULTIMATE.startENTRY 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(41, 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; 338#ULTIMATE.init_returnLabel#1 assume true;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~ret21#1, main_#t~ret22#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;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 335#L166 assume 0 == (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296); 325#L167 assume ~id1~0 >= 0; 307#L168 assume 0 == ~st1~0; 308#L169 assume ~send1~0 == ~id1~0; 357#L170 assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296); 352#L171 assume ~id2~0 >= 0; 349#L172 assume 0 == ~st2~0; 350#L173 assume ~send2~0 == ~id2~0; 356#L174 assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296); 303#L175 assume ~id3~0 >= 0; 304#L176 assume 0 == ~st3~0; 353#L177 assume ~send3~0 == ~id3~0; 341#L178 assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296); 342#L179 assume ~id4~0 >= 0; 295#L180 assume 0 == ~st4~0; 296#L181 assume ~send4~0 == ~id4~0; 339#L182 assume 0 == (if ~mode4~0 % 256 % 4294967296 <= 2147483647 then ~mode4~0 % 256 % 4294967296 else ~mode4~0 % 256 % 4294967296 - 4294967296); 340#L183 assume ~id1~0 != ~id2~0; 318#L184 assume ~id1~0 != ~id3~0; 319#L185 assume ~id1~0 != ~id4~0; 343#L186 assume ~id2~0 != ~id3~0; 355#L187 assume ~id2~0 != ~id4~0; 320#L188 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 321#L259-1 init_#res#1 := init_~tmp~0#1; 299#L259 assume true;main_#t~ret21#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret21#1;havoc main_#t~ret21#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; 300#L24 assume !(0 == assume_abort_if_not_~cond#1); 336#assume_abort_if_not_returnLabel#1 assume true;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;main_~i2~0#1 := 0; 322#L325 [2024-11-17 08:59:38,205 INFO L747 eck$LassoCheckResult]: Loop: 322#L325 assume true; 348#L325-1 assume !false;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 346#L66 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; 332#L83 assume true;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; 334#L92 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; 333#L108 assume true;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; 309#L117 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; 311#L133 assume true;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; 344#L142 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; 314#L158 assume true;havoc node4_~m4~0#1;assume { :end_inline_node4 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 317#L267 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 329#L268 assume (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296) >= 4; 330#L269 assume true; 358#L273 assume (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296) < 4;check_~tmp~1#1 := 1; 302#L287-1 check_#res#1 := check_~tmp~1#1; 359#L287 assume true;main_#t~ret22#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret22#1;havoc main_#t~ret22#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; 297#L351 assume !(0 == assert_~arg#1 % 256); 298#assert_returnLabel#1 assume true;havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true; 322#L325 [2024-11-17 08:59:38,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:59:38,206 INFO L85 PathProgramCache]: Analyzing trace with hash 272939201, now seen corresponding path program 2 times [2024-11-17 08:59:38,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:59:38,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770350120] [2024-11-17 08:59:38,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:59:38,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:59:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:59:38,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:59:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:59:38,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:59:38,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:59:38,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2100495413, now seen corresponding path program 1 times [2024-11-17 08:59:38,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:59:38,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315316233] [2024-11-17 08:59:38,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:59:38,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:59:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:59:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:59:38,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:59:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315316233] [2024-11-17 08:59:38,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315316233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 08:59:38,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 08:59:38,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 08:59:38,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877749931] [2024-11-17 08:59:38,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 08:59:38,322 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-17 08:59:38,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:59:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 08:59:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 08:59:38,323 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:59:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:59:38,352 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2024-11-17 08:59:38,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 95 states and 126 transitions. [2024-11-17 08:59:38,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 66 [2024-11-17 08:59:38,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 95 states to 95 states and 126 transitions. [2024-11-17 08:59:38,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2024-11-17 08:59:38,358 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2024-11-17 08:59:38,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 126 transitions. [2024-11-17 08:59:38,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-17 08:59:38,361 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 126 transitions. [2024-11-17 08:59:38,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 126 transitions. [2024-11-17 08:59:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-17 08:59:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 95 states have (on average 1.3263157894736841) internal successors, (126), 94 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:59:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2024-11-17 08:59:38,369 INFO L240 hiAutomatonCegarLoop]: Abstraction has 95 states and 126 transitions. [2024-11-17 08:59:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 08:59:38,372 INFO L425 stractBuchiCegarLoop]: Abstraction has 95 states and 126 transitions. [2024-11-17 08:59:38,372 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-17 08:59:38,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 95 states and 126 transitions. [2024-11-17 08:59:38,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 66 [2024-11-17 08:59:38,374 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:59:38,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:59:38,375 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] [2024-11-17 08:59:38,375 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] [2024-11-17 08:59:38,375 INFO L745 eck$LassoCheckResult]: Stem: 523#ULTIMATE.startENTRY 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(41, 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; 505#ULTIMATE.init_returnLabel#1 assume true;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~ret21#1, main_#t~ret22#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;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 503#L166 assume 0 == (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296); 491#L167 assume ~id1~0 >= 0; 473#L168 assume 0 == ~st1~0; 474#L169 assume ~send1~0 == ~id1~0; 526#L170 assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296); 521#L171 assume ~id2~0 >= 0; 518#L172 assume 0 == ~st2~0; 519#L173 assume ~send2~0 == ~id2~0; 525#L174 assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296); 469#L175 assume ~id3~0 >= 0; 470#L176 assume 0 == ~st3~0; 522#L177 assume ~send3~0 == ~id3~0; 508#L178 assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296); 509#L179 assume ~id4~0 >= 0; 461#L180 assume 0 == ~st4~0; 462#L181 assume ~send4~0 == ~id4~0; 506#L182 assume 0 == (if ~mode4~0 % 256 % 4294967296 <= 2147483647 then ~mode4~0 % 256 % 4294967296 else ~mode4~0 % 256 % 4294967296 - 4294967296); 507#L183 assume ~id1~0 != ~id2~0; 484#L184 assume ~id1~0 != ~id3~0; 485#L185 assume ~id1~0 != ~id4~0; 510#L186 assume ~id2~0 != ~id3~0; 524#L187 assume ~id2~0 != ~id4~0; 486#L188 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 487#L259-1 init_#res#1 := init_~tmp~0#1; 463#L259 assume true;main_#t~ret21#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret21#1;havoc main_#t~ret21#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; 464#L24 assume !(0 == assume_abort_if_not_~cond#1); 501#assume_abort_if_not_returnLabel#1 assume true;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;main_~i2~0#1 := 0; 502#L325 [2024-11-17 08:59:38,377 INFO L747 eck$LassoCheckResult]: Loop: 502#L325 assume true; 550#L325-1 assume !false;assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 549#L66 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; 497#L83 assume true;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; 544#L92 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; 541#L108 assume true;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; 539#L117 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; 537#L133 assume true;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; 532#L142 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; 531#L158 assume true;havoc node4_~m4~0#1;assume { :end_inline_node4 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 530#L267 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 529#L268 assume !((if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296) >= 4); 513#L271 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0; 514#L269 assume true; 555#L273 assume (if ~r1~0 % 256 % 4294967296 <= 2147483647 then ~r1~0 % 256 % 4294967296 else ~r1~0 % 256 % 4294967296 - 4294967296) < 4;check_~tmp~1#1 := 1; 554#L287-1 check_#res#1 := check_~tmp~1#1; 553#L287 assume true;main_#t~ret22#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret22#1;havoc main_#t~ret22#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; 552#L351 assume !(0 == assert_~arg#1 % 256); 551#assert_returnLabel#1 assume true;havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true; 502#L325 [2024-11-17 08:59:38,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:59:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash 272939201, now seen corresponding path program 3 times [2024-11-17 08:59:38,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:59:38,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459875254] [2024-11-17 08:59:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:59:38,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:59:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:59:38,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:59:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:59:38,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:59:38,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:59:38,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1351573646, now seen corresponding path program 1 times [2024-11-17 08:59:38,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:59:38,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379537366] [2024-11-17 08:59:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:59:38,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:59:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:59:38,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:59:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:59:38,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:59:38,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:59:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1675514190, now seen corresponding path program 1 times [2024-11-17 08:59:38,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:59:38,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438091356] [2024-11-17 08:59:38,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:59:38,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:59:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:59:38,538 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:59:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:59:38,597 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:59:41,758 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:59:41,759 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:59:41,760 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:59:41,760 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:59:41,760 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:59:41,760 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:59:41,760 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:59:41,760 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:59:41,761 INFO L132 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_Iteration4_Loop [2024-11-17 08:59:41,761 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:59:41,761 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:59:41,799 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,810 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,815 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,818 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,820 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,823 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,827 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,829 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,832 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,834 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,836 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,844 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,847 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:41,855 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:43,201 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:59:44,352 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 25