./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8be7027f 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-var-start-time.3.1.ufo.BOUNDED-6.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 a5deaf1c7eecf4d76182f6b98ab14efecb2cf3c3c2e7d8162af75087f90c331b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 21:50:16,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 21:50:16,421 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-12 21:50:16,426 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 21:50:16,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 21:50:16,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 21:50:16,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 21:50:16,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 21:50:16,464 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 21:50:16,465 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 21:50:16,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 21:50:16,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 21:50:16,466 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 21:50:16,466 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-12 21:50:16,467 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-12 21:50:16,468 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-12 21:50:16,468 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-12 21:50:16,471 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-12 21:50:16,471 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-12 21:50:16,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 21:50:16,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-12 21:50:16,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 21:50:16,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 21:50:16,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 21:50:16,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 21:50:16,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-12 21:50:16,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-12 21:50:16,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-12 21:50:16,474 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 21:50:16,474 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 21:50:16,474 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 21:50:16,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 21:50:16,474 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-12 21:50:16,474 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 21:50:16,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 21:50:16,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 21:50:16,475 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 21:50:16,475 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 21:50:16,475 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-12 21:50:16,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5deaf1c7eecf4d76182f6b98ab14efecb2cf3c3c2e7d8162af75087f90c331b [2024-11-12 21:50:16,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 21:50:16,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 21:50:16,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 21:50:16,707 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 21:50:16,707 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 21:50:16,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2024-11-12 21:50:17,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 21:50:18,043 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 21:50:18,043 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2024-11-12 21:50:18,051 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e261dcfeb/af1d54193d8c49d1b5ce34635ca45ac9/FLAG0ac6ce6cb [2024-11-12 21:50:18,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e261dcfeb/af1d54193d8c49d1b5ce34635ca45ac9 [2024-11-12 21:50:18,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 21:50:18,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 21:50:18,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 21:50:18,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 21:50:18,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 21:50:18,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f2fc65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18, skipping insertion in model container [2024-11-12 21:50:18,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 21:50:18,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 21:50:18,675 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 21:50:18,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 21:50:18,721 INFO L204 MainTranslator]: Completed translation [2024-11-12 21:50:18,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18 WrapperNode [2024-11-12 21:50:18,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 21:50:18,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 21:50:18,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 21:50:18,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 21:50:18,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,756 INFO L138 Inliner]: procedures = 21, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 239 [2024-11-12 21:50:18,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 21:50:18,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 21:50:18,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 21:50:18,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 21:50:18,769 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,771 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,784 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]. [2024-11-12 21:50:18,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,789 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 21:50:18,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 21:50:18,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 21:50:18,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 21:50:18,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (1/1) ... [2024-11-12 21:50:18,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:18,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:18,827 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) [2024-11-12 21:50:18,829 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 [2024-11-12 21:50:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 21:50:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 21:50:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 21:50:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 21:50:18,932 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 21:50:18,934 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 21:50:19,197 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-12 21:50:19,197 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 21:50:19,210 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 21:50:19,211 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-12 21:50:19,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 09:50:19 BoogieIcfgContainer [2024-11-12 21:50:19,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 21:50:19,213 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-12 21:50:19,213 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-12 21:50:19,216 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-12 21:50:19,216 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 21:50:19,216 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 09:50:18" (1/3) ... [2024-11-12 21:50:19,217 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42af9e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 09:50:19, skipping insertion in model container [2024-11-12 21:50:19,217 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 21:50:19,217 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:50:18" (2/3) ... [2024-11-12 21:50:19,217 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42af9e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 09:50:19, skipping insertion in model container [2024-11-12 21:50:19,217 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 21:50:19,217 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 09:50:19" (3/3) ... [2024-11-12 21:50:19,220 INFO L332 chiAutomizerObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2024-11-12 21:50:19,264 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2024-11-12 21:50:19,264 INFO L302 stractBuchiCegarLoop]: Hoare is None [2024-11-12 21:50:19,265 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-12 21:50:19,265 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-12 21:50:19,265 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-12 21:50:19,265 INFO L306 stractBuchiCegarLoop]: Difference is false [2024-11-12 21:50:19,265 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-12 21:50:19,266 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-12 21:50:19,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 67 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 66 states have internal predecessors, (111), 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) [2024-11-12 21:50:19,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2024-11-12 21:50:19,284 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 21:50:19,284 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 21:50:19,289 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 21:50:19,289 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 21:50:19,289 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-12 21:50:19,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 67 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 66 states have internal predecessors, (111), 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) [2024-11-12 21:50:19,293 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2024-11-12 21:50:19,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 21:50:19,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 21:50:19,293 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 21:50:19,293 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 21:50:19,299 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(49, 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;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~post22#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;assume 0 == main_#t~nondet9#1 || 1 == main_#t~nondet9#1;~alive1~0 := (if 0 == main_#t~nondet9#1 % 256 then 0 else 1);havoc main_#t~nondet9#1;havoc main_#t~nondet10#1;~id2~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_#t~nondet11#1;~st2~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_#t~nondet12#1;~send2~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_#t~nondet13#1;assume 0 == main_#t~nondet13#1 || 1 == main_#t~nondet13#1;~mode2~0 := (if 0 == main_#t~nondet13#1 % 256 then 0 else 1);havoc main_#t~nondet13#1;havoc main_#t~nondet14#1;assume 0 == main_#t~nondet14#1 || 1 == main_#t~nondet14#1;~alive2~0 := (if 0 == main_#t~nondet14#1 % 256 then 0 else 1);havoc main_#t~nondet14#1;havoc main_#t~nondet15#1;~id3~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;~st3~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_#t~nondet17#1;~send3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;assume 0 == main_#t~nondet18#1 || 1 == main_#t~nondet18#1;~mode3~0 := (if 0 == main_#t~nondet18#1 % 256 then 0 else 1);havoc main_#t~nondet18#1;havoc main_#t~nondet19#1;assume 0 == main_#t~nondet19#1 || 1 == main_#t~nondet19#1;~alive3~0 := (if 0 == main_#t~nondet19#1 % 256 then 0 else 1);havoc main_#t~nondet19#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1;" "assume !(0 == ~r1~0);init_~tmp~0#1 := 0;" "init_#res#1 := init_~tmp~0#1;" "main_#t~ret20#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret20#1;havoc main_#t~ret20#1;" "assume 0 == main_~i2~0#1;assume false;" "~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;main_~i2~0#1 := 0;" [2024-11-12 21:50:19,299 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~i2~0#1 < 6);assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0;" "assume !(0 != ~mode1~0 % 256);" "assume 0 != ~alive1~0 % 256;~p1_new~0 := (if (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 <= 127 then (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 else (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 - 256);" "~mode1~0 := 1;" "havoc node1_~m1~0#1;assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0;" "assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0;" "assume !(node2_~m2~0#1 != ~nomsg~0);" "~mode2~0 := 0;" "havoc node2_~m2~0#1;assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0;" "assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0;" "assume !(node3_~m3~0#1 != ~nomsg~0);" "~mode3~0 := 0;" "havoc node3_~m3~0#1;assume { :end_inline_node3 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1;" "assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1#1 := 0;" "check_#res#1 := check_~tmp~1#1;" "main_#t~ret21#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret21#1;havoc main_#t~ret21#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1;" "assume !(0 == assert_~arg#1 % 256);" "havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true;main_#t~post22#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post22#1;havoc main_#t~post22#1;" [2024-11-12 21:50:19,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 21:50:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1898425706, now seen corresponding path program 1 times [2024-11-12 21:50:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 21:50:19,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326797152] [2024-11-12 21:50:19,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:19,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 21:50:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:19,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 21:50:19,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326797152] [2024-11-12 21:50:19,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326797152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 21:50:19,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659877659] [2024-11-12 21:50:19,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:19,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 21:50:19,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:19,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 21:50:19,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 21:50:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:19,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-12 21:50:19,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 21:50:19,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 21:50:19,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659877659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 21:50:19,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 21:50:19,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-12 21:50:19,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274069340] [2024-11-12 21:50:19,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 21:50:19,538 INFO L752 eck$LassoCheckResult]: stem already infeasible [2024-11-12 21:50:19,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 21:50:19,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1683489467, now seen corresponding path program 1 times [2024-11-12 21:50:19,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 21:50:19,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766601229] [2024-11-12 21:50:19,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:19,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 21:50:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 21:50:19,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766601229] [2024-11-12 21:50:19,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766601229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 21:50:19,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82410742] [2024-11-12 21:50:19,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:19,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 21:50:19,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:19,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 21:50:19,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 21:50:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:19,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 21:50:19,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 21:50:19,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 21:50:20,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82410742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 21:50:20,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 21:50:20,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-12 21:50:20,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064748810] [2024-11-12 21:50:20,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 21:50:20,032 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 21:50:20,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 21:50:20,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 21:50:20,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 21:50:20,056 INFO L87 Difference]: Start difference. First operand has 67 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 66 states have internal predecessors, (111), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2024-11-12 21:50:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 21:50:20,064 INFO L93 Difference]: Finished difference Result 66 states and 107 transitions. [2024-11-12 21:50:20,065 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 107 transitions. [2024-11-12 21:50:20,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2024-11-12 21:50:20,071 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 61 states and 102 transitions. [2024-11-12 21:50:20,071 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2024-11-12 21:50:20,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61 [2024-11-12 21:50:20,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 102 transitions. [2024-11-12 21:50:20,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 21:50:20,072 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 102 transitions. [2024-11-12 21:50:20,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 102 transitions. [2024-11-12 21:50:20,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-12 21:50:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 60 states have internal predecessors, (102), 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) [2024-11-12 21:50:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 102 transitions. [2024-11-12 21:50:20,093 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 102 transitions. [2024-11-12 21:50:20,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 21:50:20,096 INFO L426 stractBuchiCegarLoop]: Abstraction has 61 states and 102 transitions. [2024-11-12 21:50:20,096 INFO L333 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-12 21:50:20,096 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 102 transitions. [2024-11-12 21:50:20,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2024-11-12 21:50:20,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 21:50:20,097 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 21:50:20,098 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 21:50:20,098 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 21:50:20,098 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(49, 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;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~post22#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;assume 0 == main_#t~nondet9#1 || 1 == main_#t~nondet9#1;~alive1~0 := (if 0 == main_#t~nondet9#1 % 256 then 0 else 1);havoc main_#t~nondet9#1;havoc main_#t~nondet10#1;~id2~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_#t~nondet11#1;~st2~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_#t~nondet12#1;~send2~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_#t~nondet13#1;assume 0 == main_#t~nondet13#1 || 1 == main_#t~nondet13#1;~mode2~0 := (if 0 == main_#t~nondet13#1 % 256 then 0 else 1);havoc main_#t~nondet13#1;havoc main_#t~nondet14#1;assume 0 == main_#t~nondet14#1 || 1 == main_#t~nondet14#1;~alive2~0 := (if 0 == main_#t~nondet14#1 % 256 then 0 else 1);havoc main_#t~nondet14#1;havoc main_#t~nondet15#1;~id3~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;~st3~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_#t~nondet17#1;~send3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;assume 0 == main_#t~nondet18#1 || 1 == main_#t~nondet18#1;~mode3~0 := (if 0 == main_#t~nondet18#1 % 256 then 0 else 1);havoc main_#t~nondet18#1;havoc main_#t~nondet19#1;assume 0 == main_#t~nondet19#1 || 1 == main_#t~nondet19#1;~alive3~0 := (if 0 == main_#t~nondet19#1 % 256 then 0 else 1);havoc main_#t~nondet19#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1;" "assume !(0 == ~r1~0);init_~tmp~0#1 := 0;" "init_#res#1 := init_~tmp~0#1;" "main_#t~ret20#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret20#1;havoc main_#t~ret20#1;" "assume !(0 == main_~i2~0#1);" "~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;main_~i2~0#1 := 0;" [2024-11-12 21:50:20,098 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~i2~0#1 < 6);assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0;" "assume !(0 != ~mode1~0 % 256);" "assume 0 != ~alive1~0 % 256;~p1_new~0 := (if (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 <= 127 then (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 else (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 - 256);" "~mode1~0 := 1;" "havoc node1_~m1~0#1;assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0;" "assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0;" "assume !(node2_~m2~0#1 != ~nomsg~0);" "~mode2~0 := 0;" "havoc node2_~m2~0#1;assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0;" "assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0;" "assume !(node3_~m3~0#1 != ~nomsg~0);" "~mode3~0 := 0;" "havoc node3_~m3~0#1;assume { :end_inline_node3 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1;" "assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1#1 := 0;" "check_#res#1 := check_~tmp~1#1;" "main_#t~ret21#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret21#1;havoc main_#t~ret21#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1;" "assume !(0 == assert_~arg#1 % 256);" "havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true;main_#t~post22#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post22#1;havoc main_#t~post22#1;" [2024-11-12 21:50:20,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 21:50:20,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1898425768, now seen corresponding path program 1 times [2024-11-12 21:50:20,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 21:50:20,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858971373] [2024-11-12 21:50:20,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:20,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 21:50:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:20,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 21:50:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858971373] [2024-11-12 21:50:20,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858971373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 21:50:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490583620] [2024-11-12 21:50:20,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:20,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 21:50:20,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:20,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 21:50:20,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 21:50:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:20,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 21:50:20,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 21:50:20,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 21:50:20,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490583620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 21:50:20,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 21:50:20,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-12 21:50:20,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171283365] [2024-11-12 21:50:20,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 21:50:20,238 INFO L752 eck$LassoCheckResult]: stem already infeasible [2024-11-12 21:50:20,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 21:50:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1683489467, now seen corresponding path program 2 times [2024-11-12 21:50:20,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 21:50:20,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991540973] [2024-11-12 21:50:20,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:20,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 21:50:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:20,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 21:50:20,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991540973] [2024-11-12 21:50:20,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991540973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 21:50:20,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386911388] [2024-11-12 21:50:20,364 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 21:50:20,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 21:50:20,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:20,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 21:50:20,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 21:50:20,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 21:50:20,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 21:50:20,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-12 21:50:20,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222303492] [2024-11-12 21:50:20,408 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 21:50:20,409 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 21:50:20,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 21:50:20,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 21:50:20,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 21:50:20,410 INFO L87 Difference]: Start difference. First operand 61 states and 102 transitions. cyclomatic complexity: 42 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) [2024-11-12 21:50:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 21:50:20,461 INFO L93 Difference]: Finished difference Result 102 states and 166 transitions. [2024-11-12 21:50:20,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 102 states and 166 transitions. [2024-11-12 21:50:20,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2024-11-12 21:50:20,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 102 states to 99 states and 147 transitions. [2024-11-12 21:50:20,464 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2024-11-12 21:50:20,464 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 99 [2024-11-12 21:50:20,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 147 transitions. [2024-11-12 21:50:20,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 21:50:20,465 INFO L218 hiAutomatonCegarLoop]: Abstraction has 99 states and 147 transitions. [2024-11-12 21:50:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 147 transitions. [2024-11-12 21:50:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 61. [2024-11-12 21:50:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 60 states have internal predecessors, (85), 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) [2024-11-12 21:50:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 85 transitions. [2024-11-12 21:50:20,468 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 85 transitions. [2024-11-12 21:50:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 21:50:20,469 INFO L426 stractBuchiCegarLoop]: Abstraction has 61 states and 85 transitions. [2024-11-12 21:50:20,469 INFO L333 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-12 21:50:20,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 85 transitions. [2024-11-12 21:50:20,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2024-11-12 21:50:20,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 21:50:20,470 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 21:50:20,472 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] [2024-11-12 21:50:20,472 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 21:50:20,473 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(49, 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;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~post22#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;assume 0 == main_#t~nondet9#1 || 1 == main_#t~nondet9#1;~alive1~0 := (if 0 == main_#t~nondet9#1 % 256 then 0 else 1);havoc main_#t~nondet9#1;havoc main_#t~nondet10#1;~id2~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_#t~nondet11#1;~st2~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_#t~nondet12#1;~send2~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_#t~nondet13#1;assume 0 == main_#t~nondet13#1 || 1 == main_#t~nondet13#1;~mode2~0 := (if 0 == main_#t~nondet13#1 % 256 then 0 else 1);havoc main_#t~nondet13#1;havoc main_#t~nondet14#1;assume 0 == main_#t~nondet14#1 || 1 == main_#t~nondet14#1;~alive2~0 := (if 0 == main_#t~nondet14#1 % 256 then 0 else 1);havoc main_#t~nondet14#1;havoc main_#t~nondet15#1;~id3~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;~st3~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_#t~nondet17#1;~send3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;assume 0 == main_#t~nondet18#1 || 1 == main_#t~nondet18#1;~mode3~0 := (if 0 == main_#t~nondet18#1 % 256 then 0 else 1);havoc main_#t~nondet18#1;havoc main_#t~nondet19#1;assume 0 == main_#t~nondet19#1 || 1 == main_#t~nondet19#1;~alive3~0 := (if 0 == main_#t~nondet19#1 % 256 then 0 else 1);havoc main_#t~nondet19#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1;" "assume 0 == ~r1~0;" "assume (if ~alive1~0 % 256 % 4294967296 <= 2147483647 then ~alive1~0 % 256 % 4294967296 else ~alive1~0 % 256 % 4294967296 - 4294967296) + (if ~alive2~0 % 256 % 4294967296 <= 2147483647 then ~alive2~0 % 256 % 4294967296 else ~alive2~0 % 256 % 4294967296 - 4294967296) + (if ~alive3~0 % 256 % 4294967296 <= 2147483647 then ~alive3~0 % 256 % 4294967296 else ~alive3~0 % 256 % 4294967296 - 4294967296) >= 1;" "assume ~id1~0 >= 0;" "assume 0 == ~st1~0;" "assume ~send1~0 == ~id1~0;" "assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296);" "assume ~id2~0 >= 0;" "assume 0 == ~st2~0;" "assume ~send2~0 == ~id2~0;" "assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296);" "assume ~id3~0 >= 0;" "assume 0 == ~st3~0;" "assume ~send3~0 == ~id3~0;" "assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296);" "assume ~id1~0 != ~id2~0;" "assume ~id1~0 != ~id3~0;" "assume ~id2~0 != ~id3~0;init_~tmp~0#1 := 1;" "init_#res#1 := init_~tmp~0#1;" "main_#t~ret20#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret20#1;havoc main_#t~ret20#1;" "assume !(0 == main_~i2~0#1);" "~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;main_~i2~0#1 := 0;" [2024-11-12 21:50:20,473 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~i2~0#1 < 6);assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0;" "assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0;" "assume !(node1_~m1~0#1 != ~nomsg~0);" "~mode1~0 := 0;" "havoc node1_~m1~0#1;assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0;" "assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0;" "assume !(node2_~m2~0#1 != ~nomsg~0);" "~mode2~0 := 0;" "havoc node2_~m2~0#1;assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0;" "assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0;" "assume !(node3_~m3~0#1 != ~nomsg~0);" "~mode3~0 := 0;" "havoc node3_~m3~0#1;assume { :end_inline_node3 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1;" "assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1#1 := 0;" "check_#res#1 := check_~tmp~1#1;" "main_#t~ret21#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret21#1;havoc main_#t~ret21#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1;" "assume !(0 == assert_~arg#1 % 256);" "havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true;main_#t~post22#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post22#1;havoc main_#t~post22#1;" [2024-11-12 21:50:20,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 21:50:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1524872798, now seen corresponding path program 1 times [2024-11-12 21:50:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 21:50:20,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507799016] [2024-11-12 21:50:20,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 21:50:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 21:50:20,498 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 21:50:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 21:50:20,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 21:50:20,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 21:50:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1433047172, now seen corresponding path program 1 times [2024-11-12 21:50:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 21:50:20,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349825077] [2024-11-12 21:50:20,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:20,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 21:50:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:20,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 21:50:20,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349825077] [2024-11-12 21:50:20,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349825077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 21:50:20,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275159098] [2024-11-12 21:50:20,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:20,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 21:50:20,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:20,639 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 21:50:20,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 21:50:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:20,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 21:50:20,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 21:50:20,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 21:50:20,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275159098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 21:50:20,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 21:50:20,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-12 21:50:20,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285574161] [2024-11-12 21:50:20,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 21:50:20,764 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 21:50:20,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 21:50:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 21:50:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 21:50:20,765 INFO L87 Difference]: Start difference. First operand 61 states and 85 transitions. cyclomatic complexity: 25 Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2024-11-12 21:50:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 21:50:20,790 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2024-11-12 21:50:20,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 87 transitions. [2024-11-12 21:50:20,791 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2024-11-12 21:50:20,792 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 61 states and 83 transitions. [2024-11-12 21:50:20,792 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2024-11-12 21:50:20,792 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61 [2024-11-12 21:50:20,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 83 transitions. [2024-11-12 21:50:20,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 21:50:20,792 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 83 transitions. [2024-11-12 21:50:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 83 transitions. [2024-11-12 21:50:20,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-12 21:50:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.360655737704918) internal successors, (83), 60 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) [2024-11-12 21:50:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2024-11-12 21:50:20,798 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 83 transitions. [2024-11-12 21:50:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 21:50:20,799 INFO L426 stractBuchiCegarLoop]: Abstraction has 61 states and 83 transitions. [2024-11-12 21:50:20,799 INFO L333 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-12 21:50:20,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 83 transitions. [2024-11-12 21:50:20,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2024-11-12 21:50:20,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 21:50:20,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 21:50:20,801 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] [2024-11-12 21:50:20,801 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] [2024-11-12 21:50:20,801 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(49, 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;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~ret20#1, main_#t~ret21#1, main_#t~post22#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;assume 0 == main_#t~nondet9#1 || 1 == main_#t~nondet9#1;~alive1~0 := (if 0 == main_#t~nondet9#1 % 256 then 0 else 1);havoc main_#t~nondet9#1;havoc main_#t~nondet10#1;~id2~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_#t~nondet11#1;~st2~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_#t~nondet12#1;~send2~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_#t~nondet13#1;assume 0 == main_#t~nondet13#1 || 1 == main_#t~nondet13#1;~mode2~0 := (if 0 == main_#t~nondet13#1 % 256 then 0 else 1);havoc main_#t~nondet13#1;havoc main_#t~nondet14#1;assume 0 == main_#t~nondet14#1 || 1 == main_#t~nondet14#1;~alive2~0 := (if 0 == main_#t~nondet14#1 % 256 then 0 else 1);havoc main_#t~nondet14#1;havoc main_#t~nondet15#1;~id3~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_#t~nondet16#1;~st3~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_#t~nondet17#1;~send3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_#t~nondet18#1;assume 0 == main_#t~nondet18#1 || 1 == main_#t~nondet18#1;~mode3~0 := (if 0 == main_#t~nondet18#1 % 256 then 0 else 1);havoc main_#t~nondet18#1;havoc main_#t~nondet19#1;assume 0 == main_#t~nondet19#1 || 1 == main_#t~nondet19#1;~alive3~0 := (if 0 == main_#t~nondet19#1 % 256 then 0 else 1);havoc main_#t~nondet19#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1;" "assume 0 == ~r1~0;" "assume (if ~alive1~0 % 256 % 4294967296 <= 2147483647 then ~alive1~0 % 256 % 4294967296 else ~alive1~0 % 256 % 4294967296 - 4294967296) + (if ~alive2~0 % 256 % 4294967296 <= 2147483647 then ~alive2~0 % 256 % 4294967296 else ~alive2~0 % 256 % 4294967296 - 4294967296) + (if ~alive3~0 % 256 % 4294967296 <= 2147483647 then ~alive3~0 % 256 % 4294967296 else ~alive3~0 % 256 % 4294967296 - 4294967296) >= 1;" "assume ~id1~0 >= 0;" "assume 0 == ~st1~0;" "assume ~send1~0 == ~id1~0;" "assume 0 == (if ~mode1~0 % 256 % 4294967296 <= 2147483647 then ~mode1~0 % 256 % 4294967296 else ~mode1~0 % 256 % 4294967296 - 4294967296);" "assume ~id2~0 >= 0;" "assume 0 == ~st2~0;" "assume ~send2~0 == ~id2~0;" "assume 0 == (if ~mode2~0 % 256 % 4294967296 <= 2147483647 then ~mode2~0 % 256 % 4294967296 else ~mode2~0 % 256 % 4294967296 - 4294967296);" "assume ~id3~0 >= 0;" "assume 0 == ~st3~0;" "assume ~send3~0 == ~id3~0;" "assume 0 == (if ~mode3~0 % 256 % 4294967296 <= 2147483647 then ~mode3~0 % 256 % 4294967296 else ~mode3~0 % 256 % 4294967296 - 4294967296);" "assume ~id1~0 != ~id2~0;" "assume ~id1~0 != ~id3~0;" "assume ~id2~0 != ~id3~0;init_~tmp~0#1 := 1;" "init_#res#1 := init_~tmp~0#1;" "main_#t~ret20#1 := init_#res#1;havoc init_~tmp~0#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret20#1;havoc main_#t~ret20#1;" "assume !(0 == main_~i2~0#1);" "~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;main_~i2~0#1 := 0;" [2024-11-12 21:50:20,801 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~i2~0#1 < 6);assume { :begin_inline_node1 } true;havoc node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0;" "assume !(0 != ~mode1~0 % 256);" "assume 0 != ~alive1~0 % 256;~p1_new~0 := (if (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 <= 127 then (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 else (if ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0 then ~send1~0 else ~p1_new~0) % 256 - 256);" "~mode1~0 := 1;" "havoc node1_~m1~0#1;assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0;" "assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0;" "assume !(node2_~m2~0#1 != ~nomsg~0);" "~mode2~0 := 0;" "havoc node2_~m2~0#1;assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0;" "assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0;" "assume !(node3_~m3~0#1 != ~nomsg~0);" "~mode3~0 := 0;" "havoc node3_~m3~0#1;assume { :end_inline_node3 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1;" "assume ~st1~0 + ~st2~0 + ~st3~0 <= 1;" "assume ~r1~0 < 3;check_~tmp~1#1 := 1;" "check_#res#1 := check_~tmp~1#1;" "main_#t~ret21#1 := check_#res#1;havoc check_~tmp~1#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret21#1;havoc main_#t~ret21#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1;" "assume !(0 == assert_~arg#1 % 256);" "havoc assert_~arg#1;havoc assert_#in~arg#1;assume { :end_inline_assert } true;main_#t~post22#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post22#1;havoc main_#t~post22#1;" [2024-11-12 21:50:20,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 21:50:20,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1524872798, now seen corresponding path program 2 times [2024-11-12 21:50:20,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 21:50:20,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287216390] [2024-11-12 21:50:20,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:20,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 21:50:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 21:50:20,817 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 21:50:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 21:50:20,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 21:50:20,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 21:50:20,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1031895147, now seen corresponding path program 1 times [2024-11-12 21:50:20,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 21:50:20,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097634499] [2024-11-12 21:50:20,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:20,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 21:50:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 21:50:20,852 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 21:50:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 21:50:20,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 21:50:20,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 21:50:20,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1928196632, now seen corresponding path program 1 times [2024-11-12 21:50:20,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 21:50:20,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245069316] [2024-11-12 21:50:20,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:20,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 21:50:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:20,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 21:50:20,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245069316] [2024-11-12 21:50:20,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245069316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 21:50:20,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765528430] [2024-11-12 21:50:20,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 21:50:20,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 21:50:20,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:20,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 21:50:20,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 21:50:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:20,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 21:50:20,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 21:50:21,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 21:50:21,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765528430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 21:50:21,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 21:50:21,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-12 21:50:21,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641214702] [2024-11-12 21:50:21,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 21:50:21,462 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 21:50:21,462 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 21:50:21,462 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 21:50:21,462 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 21:50:21,463 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-12 21:50:21,463 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:21,463 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 21:50:21,463 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 21:50:21,463 INFO L132 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2024-11-12 21:50:21,463 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 21:50:21,463 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 21:50:21,482 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,488 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,625 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,628 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,632 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,634 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,636 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,637 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,642 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,643 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,645 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,646 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,650 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,653 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,655 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,657 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:21,967 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-12 21:50:22,665 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 21:50:22,666 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-12 21:50:22,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:22,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:22,673 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2024-11-12 21:50:22,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-12 21:50:22,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 21:50:22,676 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 21:50:22,695 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 21:50:22,695 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_node3_~m3~0#1=0} Honda state: {ULTIMATE.start_node3_~m3~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-12 21:50:22,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-12 21:50:22,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:22,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:22,717 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2024-11-12 21:50:22,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-12 21:50:22,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 21:50:22,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 21:50:22,822 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 21:50:22,822 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {~p1_old~0=-70, ~p1_new~0=-70, ~p2_new~0=-70, ~p3_new~0=-70, ~nomsg~0=-70, ~p2_old~0=-70, ~p3_old~0=-70, ~send1~0=-70} Honda state: {~p1_old~0=-70, ~p1_new~0=-70, ~p2_new~0=-70, ~p3_new~0=-70, ~nomsg~0=-70, ~p2_old~0=-70, ~p3_old~0=-70, ~send1~0=-70} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-12 21:50:22,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-11-12 21:50:22,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:22,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:22,843 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2024-11-12 21:50:22,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-12 21:50:22,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 21:50:22,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 21:50:22,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-12 21:50:22,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:22,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:22,881 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2024-11-12 21:50:22,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-12 21:50:22,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-12 21:50:22,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 21:50:22,967 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-12 21:50:22,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-12 21:50:22,971 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 21:50:22,971 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 21:50:22,971 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 21:50:22,971 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 21:50:22,971 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-12 21:50:22,971 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:22,972 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 21:50:22,972 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 21:50:22,972 INFO L132 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2024-11-12 21:50:22,972 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 21:50:22,972 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 21:50:22,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:22,979 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:22,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,107 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,112 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,116 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,118 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,119 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,125 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,127 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,128 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,132 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,134 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,135 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,138 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,142 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 21:50:23,440 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-12 21:50:24,035 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 21:50:24,039 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-12 21:50:24,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:24,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:24,041 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2024-11-12 21:50:24,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-12 21:50:24,043 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-12 21:50:24,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 21:50:24,054 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 21:50:24,055 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 21:50:24,055 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 21:50:24,055 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 21:50:24,056 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 21:50:24,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 21:50:24,058 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 21:50:24,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-12 21:50:24,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:24,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:24,071 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2024-11-12 21:50:24,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-12 21:50:24,073 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-12 21:50:24,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 21:50:24,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 21:50:24,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 21:50:24,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 21:50:24,083 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 21:50:24,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 21:50:24,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 21:50:24,084 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 21:50:24,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-12 21:50:24,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:24,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:24,097 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2024-11-12 21:50:24,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-12 21:50:24,099 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-12 21:50:24,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 21:50:24,109 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 21:50:24,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 21:50:24,109 INFO L204 nArgumentSynthesizer]: 6 loop disjuncts [2024-11-12 21:50:24,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 21:50:24,134 INFO L401 nArgumentSynthesizer]: We have 12 Motzkin's Theorem applications. [2024-11-12 21:50:24,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 21:50:24,150 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 21:50:24,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-12 21:50:24,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:24,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:24,164 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2024-11-12 21:50:24,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-12 21:50:24,167 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-12 21:50:24,177 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 21:50:24,177 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 21:50:24,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 21:50:24,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 21:50:24,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 21:50:24,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 21:50:24,179 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 21:50:24,180 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 21:50:24,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-12 21:50:24,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:24,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:24,193 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2024-11-12 21:50:24,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-12 21:50:24,196 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-12 21:50:24,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 21:50:24,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 21:50:24,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 21:50:24,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 21:50:24,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 21:50:24,208 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 21:50:24,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 21:50:24,209 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-12 21:50:24,211 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-12 21:50:24,211 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-12 21:50:24,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 21:50:24,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 21:50:24,220 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2024-11-12 21:50:24,222 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-12 21:50:24,222 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-12 21:50:24,223 INFO L474 LassoAnalysis]: Proved termination. [2024-11-12 21:50:24,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-12 21:50:24,223 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0#1) = -2*ULTIMATE.start_main_~i2~0#1 + 11 Supporting invariants [] [2024-11-12 21:50:24,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-12 21:50:24,240 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-12 21:50:24,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 21:50:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:24,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 21:50:24,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 21:50:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 21:50:24,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 21:50:24,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 21:50:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 21:50:24,380 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-12 21:50:24,381 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 83 transitions. cyclomatic complexity: 23 Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-12 21:50:24,413 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 83 transitions. cyclomatic complexity: 23. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 99 states and 144 transitions. Complement of second has 4 states. [2024-11-12 21:50:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-12 21:50:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-12 21:50:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-12 21:50:24,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 83 transitions. Stem has 23 letters. Loop has 19 letters. [2024-11-12 21:50:24,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 21:50:24,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 83 transitions. Stem has 42 letters. Loop has 19 letters. [2024-11-12 21:50:24,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 21:50:24,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 83 transitions. Stem has 23 letters. Loop has 38 letters. [2024-11-12 21:50:24,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 21:50:24,421 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 144 transitions. [2024-11-12 21:50:24,422 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-12 21:50:24,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 0 states and 0 transitions. [2024-11-12 21:50:24,425 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-12 21:50:24,425 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-12 21:50:24,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-12 21:50:24,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 21:50:24,426 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 21:50:24,426 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 21:50:24,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 21:50:24,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 21:50:24,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 21:50:24,426 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-12 21:50:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 21:50:24,426 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-12 21:50:24,427 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-12 21:50:24,427 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-12 21:50:24,427 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-12 21:50:24,427 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-12 21:50:24,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-12 21:50:24,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-12 21:50:24,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 21:50:24,427 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 21:50:24,427 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 21:50:24,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 21:50:24,427 INFO L426 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 21:50:24,427 INFO L333 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-12 21:50:24,427 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-12 21:50:24,427 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-12 21:50:24,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-12 21:50:24,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 09:50:24 BoogieIcfgContainer [2024-11-12 21:50:24,436 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-12 21:50:24,437 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 21:50:24,437 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 21:50:24,437 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 21:50:24,438 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 09:50:19" (3/4) ... [2024-11-12 21:50:24,439 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-12 21:50:24,440 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 21:50:24,441 INFO L158 Benchmark]: Toolchain (without parser) took 5982.65ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 111.0MB in the beginning and 106.0MB in the end (delta: 5.0MB). Peak memory consumption was 62.0MB. Max. memory is 16.1GB. [2024-11-12 21:50:24,441 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 129.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 21:50:24,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.50ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 95.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-12 21:50:24,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.13ms. Allocated memory is still 167.8MB. Free memory was 95.7MB in the beginning and 92.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 21:50:24,441 INFO L158 Benchmark]: Boogie Preprocessor took 46.66ms. Allocated memory is still 167.8MB. Free memory was 92.9MB in the beginning and 90.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 21:50:24,442 INFO L158 Benchmark]: RCFGBuilder took 407.83ms. Allocated memory is still 167.8MB. Free memory was 90.0MB in the beginning and 67.7MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-12 21:50:24,442 INFO L158 Benchmark]: BuchiAutomizer took 5223.73ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 67.7MB in the beginning and 107.1MB in the end (delta: -39.4MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2024-11-12 21:50:24,442 INFO L158 Benchmark]: Witness Printer took 3.56ms. Allocated memory is still 222.3MB. Free memory was 107.1MB in the beginning and 106.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 21:50:24,445 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 129.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.50ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 95.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.13ms. Allocated memory is still 167.8MB. Free memory was 95.7MB in the beginning and 92.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.66ms. Allocated memory is still 167.8MB. Free memory was 92.9MB in the beginning and 90.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 407.83ms. Allocated memory is still 167.8MB. Free memory was 90.0MB in the beginning and 67.7MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 5223.73ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 67.7MB in the beginning and 107.1MB in the end (delta: -39.4MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Witness Printer took 3.56ms. Allocated memory is still 222.3MB. Free memory was 107.1MB in the beginning and 106.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function (((long long) -2 * i2) + 11) and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 4.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 38 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 142 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 1020 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 651 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 369 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI2 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital132 mio100 ax100 hnf100 lsp390 ukn25 mio100 lsp100 div135 bol100 ite100 ukn100 eq167 hnf96 smp76 dnf1044 smp24 tf100 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 54ms VariablesStem: 0 VariablesLoop: 17 DisjunctsStem: 1 DisjunctsLoop: 6 SupportingInvariants: 0 MotzkinApplications: 12 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-12 21:50:24,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-12 21:50:24,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 21:50:24,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 21:50:25,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 21:50:25,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 21:50:25,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 21:50:25,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 21:50:25,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE