./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 Calling Ultimate with: /usr/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.6.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 dd1724e619d2e8fc18a4dc8aa6c726656a51fc7e14f993d511c4c773ed4748f3 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:22:53,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:22:53,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:22:53,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:22:53,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:22:53,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:22:53,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:22:53,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:22:53,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:22:53,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:22:53,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:22:53,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:22:53,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:22:53,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:22:53,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:22:53,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:22:53,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:22:53,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:22:53,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:22:53,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:22:53,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:22:53,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:22:53,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:22:53,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:22:53,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:22:53,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:22:53,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:22:53,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:22:53,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:22:53,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:22:53,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:22:53,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:22:53,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:22:53,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:22:54,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:22:54,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:22:54,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:22:54,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:22:54,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:22:54,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:22:54,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:22:54,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:22:54,049 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:22:54,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:22:54,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:22:54,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:22:54,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:22:54,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:22:54,058 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:22:54,058 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:22:54,058 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:22:54,068 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:22:54,069 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:22:54,069 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:22:54,069 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:22:54,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:22:54,070 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:22:54,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:22:54,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:22:54,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:22:54,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:22:54,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:22:54,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:22:54,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:22:54,072 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:22:54,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:22:54,073 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:22:54,073 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:22:54,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:22:54,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:22:54,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:22:54,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:22:54,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:22:54,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:22:54,075 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:22:54,076 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd1724e619d2e8fc18a4dc8aa6c726656a51fc7e14f993d511c4c773ed4748f3 [2021-12-15 17:22:54,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:22:54,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:22:54,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:22:54,611 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:22:54,612 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:22:54,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2021-12-15 17:22:54,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ee4857e/7f2751198db4452e972080caa92b3006/FLAG98eaff0e3 [2021-12-15 17:22:55,238 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:22:55,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2021-12-15 17:22:55,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ee4857e/7f2751198db4452e972080caa92b3006/FLAG98eaff0e3 [2021-12-15 17:22:55,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ee4857e/7f2751198db4452e972080caa92b3006 [2021-12-15 17:22:55,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:22:55,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:22:55,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:22:55,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:22:55,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:22:55,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:22:55" (1/1) ... [2021-12-15 17:22:55,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebd02d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:55, skipping insertion in model container [2021-12-15 17:22:55,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:22:55" (1/1) ... [2021-12-15 17:22:55,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:22:55,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:22:56,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c[17005,17018] [2021-12-15 17:22:56,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:22:56,057 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:22:56,156 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c[17005,17018] [2021-12-15 17:22:56,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:22:56,188 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:22:56,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56 WrapperNode [2021-12-15 17:22:56,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:22:56,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:22:56,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:22:56,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:22:56,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (1/1) ... [2021-12-15 17:22:56,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (1/1) ... [2021-12-15 17:22:56,261 INFO L137 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 440 [2021-12-15 17:22:56,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:22:56,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:22:56,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:22:56,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:22:56,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (1/1) ... [2021-12-15 17:22:56,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (1/1) ... [2021-12-15 17:22:56,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (1/1) ... [2021-12-15 17:22:56,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (1/1) ... [2021-12-15 17:22:56,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (1/1) ... [2021-12-15 17:22:56,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (1/1) ... [2021-12-15 17:22:56,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (1/1) ... [2021-12-15 17:22:56,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:22:56,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:22:56,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:22:56,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:22:56,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (1/1) ... [2021-12-15 17:22:56,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:22:56,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:22:56,405 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) [2021-12-15 17:22:56,423 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 [2021-12-15 17:22:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:22:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:22:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:22:56,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:22:56,651 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:22:56,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:22:57,139 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:22:57,159 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:22:57,159 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 17:22:57,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:22:57 BoogieIcfgContainer [2021-12-15 17:22:57,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:22:57,162 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:22:57,162 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:22:57,165 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:22:57,166 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:57,167 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:22:55" (1/3) ... [2021-12-15 17:22:57,168 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6490be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:22:57, skipping insertion in model container [2021-12-15 17:22:57,182 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:57,182 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:56" (2/3) ... [2021-12-15 17:22:57,183 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6490be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:22:57, skipping insertion in model container [2021-12-15 17:22:57,183 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:57,183 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:22:57" (3/3) ... [2021-12-15 17:22:57,184 INFO L388 chiAutomizerObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2021-12-15 17:22:57,252 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:22:57,252 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:22:57,252 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:22:57,252 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:22:57,253 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:22:57,253 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:22:57,253 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:22:57,253 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:22:57,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 146 states, 145 states have (on average 1.710344827586207) internal successors, (248), 145 states have internal predecessors, (248), 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) [2021-12-15 17:22:57,332 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 95 [2021-12-15 17:22:57,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:57,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:57,347 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:57,348 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:57,348 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:22:57,351 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 146 states, 145 states have (on average 1.710344827586207) internal successors, (248), 145 states have internal predecessors, (248), 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) [2021-12-15 17:22:57,370 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 95 [2021-12-15 17:22:57,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:57,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:57,375 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:57,376 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:57,383 INFO L791 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(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;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~alive5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~alive6~0 := 0; 45#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~nondet37#1, main_#t~nondet38#1, main_#t~nondet39#1, main_#t~nondet40#1, main_#t~nondet41#1, main_#t~nondet42#1, main_#t~nondet43#1, main_#t~nondet44#1, main_#t~nondet45#1, main_#t~nondet46#1, main_#t~ret47#1, main_#t~ret48#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~alive1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~id2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~st2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~send2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~mode2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~alive2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~id3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~st3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~send3~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~alive3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~st4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~send4~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~mode4~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~alive4~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~id5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~send5~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~mode5~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~alive5~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~id6~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~st6~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~send6~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~mode6~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~alive6~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 125#L293true assume !(0 == ~r1~0 % 256);init_~tmp~0#1 := 0; 109#L293-1true init_#res#1 := init_~tmp~0#1; 114#L458true main_#t~ret47#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret47#1;havoc main_#t~ret47#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 47#L22true assume 0 == assume_abort_if_not_~cond#1;assume false; 104#L21true assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 60#L534-2true [2021-12-15 17:22:57,399 INFO L793 eck$LassoCheckResult]: Loop: 60#L534-2true assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 124#L84true assume !(0 != ~mode1~0 % 256); 132#L107true assume !(0 != ~alive1~0 % 256); 73#L110true assume !(~send1~0 != ~id1~0); 46#L110-2true ~mode1~0 := 1; 31#L84-2true assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 89#L124true assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 127#L127true assume !(node2_~m2~0#1 != ~nomsg~0); 94#L127-1true ~mode2~0 := 0; 64#L124-2true assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 22#L158true assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 18#L161true assume !(node3_~m3~0#1 != ~nomsg~0); 78#L161-1true ~mode3~0 := 0; 19#L158-2true assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_#t~ite11#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 101#L192true assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 111#L195true assume !(node4_~m4~0#1 != ~nomsg~0); 53#L195-1true ~mode4~0 := 0; 99#L192-2true assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite12#1, node5_#t~ite13#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 16#L226true assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 143#L229true assume !(node5_~m5~0#1 != ~nomsg~0); 61#L229-1true ~mode5~0 := 0; 44#L226-2true assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_#t~ite14#1, node6_#t~ite15#1, node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0; 69#L260true assume 0 != ~mode6~0 % 256;node6_~m6~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 135#L263true assume !(node6_~m6~0#1 != ~nomsg~0); 144#L263-1true ~mode6~0 := 0; 100#L260-2true assume { :end_inline_node6 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 140#L466true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1);check_~tmp~1#1 := 0; 79#L466-1true check_#res#1 := check_~tmp~1#1; 145#L478true main_#t~ret48#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret48#1;havoc main_#t~ret48#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; 118#L566true assume !(0 == assert_~arg#1 % 256); 75#L561true assume { :end_inline_assert } true; 60#L534-2true [2021-12-15 17:22:57,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:57,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2035845626, now seen corresponding path program 1 times [2021-12-15 17:22:57,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:57,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31914275] [2021-12-15 17:22:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:57,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:57,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:57,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31914275] [2021-12-15 17:22:57,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31914275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:57,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:57,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 17:22:57,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848907794] [2021-12-15 17:22:57,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:57,736 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:22:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:57,738 INFO L85 PathProgramCache]: Analyzing trace with hash 459815077, now seen corresponding path program 1 times [2021-12-15 17:22:57,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:57,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408226359] [2021-12-15 17:22:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:57,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:57,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:57,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408226359] [2021-12-15 17:22:57,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408226359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:57,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:57,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:57,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327974741] [2021-12-15 17:22:57,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:57,923 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:22:57,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:22:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 17:22:57,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 17:22:57,951 INFO L87 Difference]: Start difference. First operand has 146 states, 145 states have (on average 1.710344827586207) internal successors, (248), 145 states have internal predecessors, (248), 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) [2021-12-15 17:22:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:22:57,963 INFO L93 Difference]: Finished difference Result 142 states and 241 transitions. [2021-12-15 17:22:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 17:22:57,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 241 transitions. [2021-12-15 17:22:57,971 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:57,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 141 states and 240 transitions. [2021-12-15 17:22:57,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2021-12-15 17:22:57,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2021-12-15 17:22:57,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 240 transitions. [2021-12-15 17:22:57,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:22:57,977 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 240 transitions. [2021-12-15 17:22:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 240 transitions. [2021-12-15 17:22:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-12-15 17:22:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 141 states have (on average 1.702127659574468) internal successors, (240), 140 states have internal predecessors, (240), 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) [2021-12-15 17:22:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 240 transitions. [2021-12-15 17:22:58,003 INFO L704 BuchiCegarLoop]: Abstraction has 141 states and 240 transitions. [2021-12-15 17:22:58,003 INFO L587 BuchiCegarLoop]: Abstraction has 141 states and 240 transitions. [2021-12-15 17:22:58,004 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 17:22:58,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states and 240 transitions. [2021-12-15 17:22:58,005 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:58,005 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:58,005 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:58,006 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:58,006 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:58,007 INFO L791 eck$LassoCheckResult]: Stem: 436#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(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;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~alive5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~alive6~0 := 0; 370#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~nondet37#1, main_#t~nondet38#1, main_#t~nondet39#1, main_#t~nondet40#1, main_#t~nondet41#1, main_#t~nondet42#1, main_#t~nondet43#1, main_#t~nondet44#1, main_#t~nondet45#1, main_#t~nondet46#1, main_#t~ret47#1, main_#t~ret48#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~alive1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~id2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~st2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~send2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~mode2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~alive2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~id3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~st3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~send3~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~alive3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~st4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~send4~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~mode4~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~alive4~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~id5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~send5~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~mode5~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~alive5~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~id6~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~st6~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~send6~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~mode6~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~alive6~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 371#L293 assume !(0 == ~r1~0 % 256);init_~tmp~0#1 := 0; 302#L293-1 init_#res#1 := init_~tmp~0#1; 430#L458 main_#t~ret47#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret47#1;havoc main_#t~ret47#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 373#L22 assume !(0 == assume_abort_if_not_~cond#1); 374#L21 assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 389#L534-2 [2021-12-15 17:22:58,007 INFO L793 eck$LassoCheckResult]: Loop: 389#L534-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 390#L84 assume !(0 != ~mode1~0 % 256); 435#L107 assume !(0 != ~alive1~0 % 256); 406#L110 assume !(~send1~0 != ~id1~0); 372#L110-2 ~mode1~0 := 1; 354#L84-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 355#L124 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 419#L127 assume !(node2_~m2~0#1 != ~nomsg~0); 387#L127-1 ~mode2~0 := 0; 396#L124-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 339#L158 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 331#L161 assume !(node3_~m3~0#1 != ~nomsg~0); 333#L161-1 ~mode3~0 := 0; 323#L158-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_#t~ite11#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 334#L192 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 426#L195 assume !(node4_~m4~0#1 != ~nomsg~0); 382#L195-1 ~mode4~0 := 0; 383#L192-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite12#1, node5_#t~ite13#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 326#L226 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 328#L229 assume !(node5_~m5~0#1 != ~nomsg~0); 391#L229-1 ~mode5~0 := 0; 338#L226-2 assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_#t~ite14#1, node6_#t~ite15#1, node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0; 369#L260 assume 0 != ~mode6~0 % 256;node6_~m6~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 404#L263 assume !(node6_~m6~0#1 != ~nomsg~0); 346#L263-1 ~mode6~0 := 0; 423#L260-2 assume { :end_inline_node6 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 424#L466 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1);check_~tmp~1#1 := 0; 409#L466-1 check_#res#1 := check_~tmp~1#1; 410#L478 main_#t~ret48#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret48#1;havoc main_#t~ret48#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; 432#L566 assume !(0 == assert_~arg#1 % 256); 407#L561 assume { :end_inline_assert } true; 389#L534-2 [2021-12-15 17:22:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2035845688, now seen corresponding path program 1 times [2021-12-15 17:22:58,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:58,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962620027] [2021-12-15 17:22:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:58,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:58,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:58,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962620027] [2021-12-15 17:22:58,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962620027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:58,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:58,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:58,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724682834] [2021-12-15 17:22:58,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:58,044 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:22:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash 459815077, now seen corresponding path program 2 times [2021-12-15 17:22:58,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:58,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245471236] [2021-12-15 17:22:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:58,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:58,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:58,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245471236] [2021-12-15 17:22:58,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245471236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:58,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:58,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:58,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31665759] [2021-12-15 17:22:58,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:58,110 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:22:58,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:22:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:22:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:22:58,112 INFO L87 Difference]: Start difference. First operand 141 states and 240 transitions. cyclomatic complexity: 100 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) [2021-12-15 17:22:58,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:22:58,207 INFO L93 Difference]: Finished difference Result 144 states and 242 transitions. [2021-12-15 17:22:58,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:22:58,208 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 144 states and 242 transitions. [2021-12-15 17:22:58,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:58,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 144 states to 141 states and 199 transitions. [2021-12-15 17:22:58,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2021-12-15 17:22:58,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2021-12-15 17:22:58,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 199 transitions. [2021-12-15 17:22:58,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:22:58,213 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-12-15 17:22:58,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 199 transitions. [2021-12-15 17:22:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-12-15 17:22:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 141 states have (on average 1.4113475177304964) internal successors, (199), 140 states have internal predecessors, (199), 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) [2021-12-15 17:22:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-12-15 17:22:58,219 INFO L704 BuchiCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-12-15 17:22:58,219 INFO L587 BuchiCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-12-15 17:22:58,219 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-15 17:22:58,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states and 199 transitions. [2021-12-15 17:22:58,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:58,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:58,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:58,235 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:58,236 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:58,236 INFO L791 eck$LassoCheckResult]: Stem: 736#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(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;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~alive5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~alive6~0 := 0; 669#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~nondet37#1, main_#t~nondet38#1, main_#t~nondet39#1, main_#t~nondet40#1, main_#t~nondet41#1, main_#t~nondet42#1, main_#t~nondet43#1, main_#t~nondet44#1, main_#t~nondet45#1, main_#t~nondet46#1, main_#t~ret47#1, main_#t~ret48#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~alive1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~id2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~st2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~send2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~mode2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~alive2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~id3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~st3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~send3~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~alive3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~st4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~send4~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~mode4~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~alive4~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~id5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~send5~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~mode5~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~alive5~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~id6~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~st6~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~send6~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~mode6~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~alive6~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 670#L293 assume 0 == ~r1~0 % 256; 733#L294 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 + ~alive4~0 % 256 + ~alive5~0 % 256 + ~alive6~0 % 256 >= 1; 610#L295 assume ~id1~0 >= 0; 611#L296 assume 0 == ~st1~0; 660#L297 assume ~send1~0 == ~id1~0; 658#L298 assume 0 == ~mode1~0 % 256; 659#L299 assume ~id2~0 >= 0; 667#L300 assume 0 == ~st2~0; 705#L301 assume ~send2~0 == ~id2~0; 721#L302 assume 0 == ~mode2~0 % 256; 722#L303 assume ~id3~0 >= 0; 729#L304 assume 0 == ~st3~0; 693#L305 assume ~send3~0 == ~id3~0; 694#L306 assume 0 == ~mode3~0 % 256; 718#L307 assume ~id4~0 >= 0; 626#L308 assume 0 == ~st4~0; 627#L309 assume ~send4~0 == ~id4~0; 711#L310 assume 0 == ~mode4~0 % 256; 679#L311 assume ~id5~0 >= 0; 680#L312 assume 0 == ~st5~0; 651#L313 assume ~send5~0 == ~id5~0; 652#L314 assume 0 == ~mode5~0 % 256; 675#L315 assume ~id6~0 >= 0; 676#L316 assume 0 == ~st6~0; 608#L317 assume ~send6~0 == ~id6~0; 609#L318 assume 0 == ~mode6~0 % 256; 737#L319 assume ~id1~0 != ~id2~0; 720#L320 assume ~id1~0 != ~id3~0; 701#L321 assume ~id1~0 != ~id4~0; 702#L322 assume ~id1~0 != ~id5~0; 604#L323 assume ~id1~0 != ~id6~0; 605#L324 assume ~id2~0 != ~id3~0; 639#L325 assume ~id2~0 != ~id4~0; 656#L326 assume ~id2~0 != ~id5~0; 640#L327 assume ~id2~0 != ~id6~0; 641#L328 assume ~id3~0 != ~id4~0; 662#L329 assume ~id3~0 != ~id5~0; 663#L330 assume ~id3~0 != ~id6~0; 621#L331 assume ~id4~0 != ~id5~0; 622#L332 assume ~id4~0 != ~id6~0; 655#L333 assume ~id5~0 != ~id6~0;init_~tmp~0#1 := 1; 696#L293-1 init_#res#1 := init_~tmp~0#1; 730#L458 main_#t~ret47#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret47#1;havoc main_#t~ret47#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 672#L22 assume !(0 == assume_abort_if_not_~cond#1); 673#L21 assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 688#L534-2 [2021-12-15 17:22:58,236 INFO L793 eck$LassoCheckResult]: Loop: 688#L534-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 689#L84 assume !(0 != ~mode1~0 % 256); 735#L107 assume !(0 != ~alive1~0 % 256); 706#L110 assume !(~send1~0 != ~id1~0); 671#L110-2 ~mode1~0 := 1; 653#L84-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 654#L124 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 719#L127 assume !(node2_~m2~0#1 != ~nomsg~0); 686#L127-1 ~mode2~0 := 0; 695#L124-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 638#L158 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 630#L161 assume !(node3_~m3~0#1 != ~nomsg~0); 632#L161-1 ~mode3~0 := 0; 620#L158-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_#t~ite11#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 633#L192 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 725#L195 assume !(node4_~m4~0#1 != ~nomsg~0); 681#L195-1 ~mode4~0 := 0; 682#L192-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite12#1, node5_#t~ite13#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 623#L226 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 625#L229 assume !(node5_~m5~0#1 != ~nomsg~0); 690#L229-1 ~mode5~0 := 0; 637#L226-2 assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_#t~ite14#1, node6_#t~ite15#1, node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0; 668#L260 assume 0 != ~mode6~0 % 256;node6_~m6~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 704#L263 assume !(node6_~m6~0#1 != ~nomsg~0); 645#L263-1 ~mode6~0 := 0; 723#L260-2 assume { :end_inline_node6 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 724#L466 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1);check_~tmp~1#1 := 0; 709#L466-1 check_#res#1 := check_~tmp~1#1; 710#L478 main_#t~ret48#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret48#1;havoc main_#t~ret48#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; 732#L566 assume !(0 == assert_~arg#1 % 256); 707#L561 assume { :end_inline_assert } true; 688#L534-2 [2021-12-15 17:22:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:58,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1766357374, now seen corresponding path program 1 times [2021-12-15 17:22:58,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:58,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245691611] [2021-12-15 17:22:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:58,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:58,284 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:58,408 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:58,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash 459815077, now seen corresponding path program 3 times [2021-12-15 17:22:58,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:58,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961250357] [2021-12-15 17:22:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:58,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:58,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:58,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961250357] [2021-12-15 17:22:58,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961250357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:58,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:58,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:58,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3890463] [2021-12-15 17:22:58,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:58,564 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:22:58,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:22:58,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:22:58,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:22:58,565 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. cyclomatic complexity: 59 Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-12-15 17:22:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:22:58,650 INFO L93 Difference]: Finished difference Result 144 states and 201 transitions. [2021-12-15 17:22:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:22:58,667 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 144 states and 201 transitions. [2021-12-15 17:22:58,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:58,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 144 states to 141 states and 197 transitions. [2021-12-15 17:22:58,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2021-12-15 17:22:58,675 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2021-12-15 17:22:58,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 197 transitions. [2021-12-15 17:22:58,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:22:58,681 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 197 transitions. [2021-12-15 17:22:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 197 transitions. [2021-12-15 17:22:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-12-15 17:22:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 141 states have (on average 1.3971631205673758) internal successors, (197), 140 states have internal predecessors, (197), 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) [2021-12-15 17:22:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 197 transitions. [2021-12-15 17:22:58,697 INFO L704 BuchiCegarLoop]: Abstraction has 141 states and 197 transitions. [2021-12-15 17:22:58,697 INFO L587 BuchiCegarLoop]: Abstraction has 141 states and 197 transitions. [2021-12-15 17:22:58,697 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-15 17:22:58,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states and 197 transitions. [2021-12-15 17:22:58,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:58,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:58,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:58,703 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:58,719 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:58,720 INFO L791 eck$LassoCheckResult]: Stem: 1033#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(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;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~alive5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~alive6~0 := 0; 966#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~nondet37#1, main_#t~nondet38#1, main_#t~nondet39#1, main_#t~nondet40#1, main_#t~nondet41#1, main_#t~nondet42#1, main_#t~nondet43#1, main_#t~nondet44#1, main_#t~nondet45#1, main_#t~nondet46#1, main_#t~ret47#1, main_#t~ret48#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~alive1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~id2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~st2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~send2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~mode2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~alive2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~id3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~st3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~send3~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~alive3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~st4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~send4~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~mode4~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~alive4~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~id5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~send5~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~mode5~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~alive5~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~id6~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~st6~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~send6~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~mode6~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~alive6~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 967#L293 assume 0 == ~r1~0 % 256; 1030#L294 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 + ~alive4~0 % 256 + ~alive5~0 % 256 + ~alive6~0 % 256 >= 1; 907#L295 assume ~id1~0 >= 0; 908#L296 assume 0 == ~st1~0; 957#L297 assume ~send1~0 == ~id1~0; 955#L298 assume 0 == ~mode1~0 % 256; 956#L299 assume ~id2~0 >= 0; 964#L300 assume 0 == ~st2~0; 1002#L301 assume ~send2~0 == ~id2~0; 1018#L302 assume 0 == ~mode2~0 % 256; 1019#L303 assume ~id3~0 >= 0; 1026#L304 assume 0 == ~st3~0; 990#L305 assume ~send3~0 == ~id3~0; 991#L306 assume 0 == ~mode3~0 % 256; 1015#L307 assume ~id4~0 >= 0; 923#L308 assume 0 == ~st4~0; 924#L309 assume ~send4~0 == ~id4~0; 1008#L310 assume 0 == ~mode4~0 % 256; 976#L311 assume ~id5~0 >= 0; 977#L312 assume 0 == ~st5~0; 948#L313 assume ~send5~0 == ~id5~0; 949#L314 assume 0 == ~mode5~0 % 256; 971#L315 assume ~id6~0 >= 0; 972#L316 assume 0 == ~st6~0; 905#L317 assume ~send6~0 == ~id6~0; 906#L318 assume 0 == ~mode6~0 % 256; 1034#L319 assume ~id1~0 != ~id2~0; 1017#L320 assume ~id1~0 != ~id3~0; 998#L321 assume ~id1~0 != ~id4~0; 999#L322 assume ~id1~0 != ~id5~0; 898#L323 assume ~id1~0 != ~id6~0; 899#L324 assume ~id2~0 != ~id3~0; 936#L325 assume ~id2~0 != ~id4~0; 953#L326 assume ~id2~0 != ~id5~0; 937#L327 assume ~id2~0 != ~id6~0; 938#L328 assume ~id3~0 != ~id4~0; 959#L329 assume ~id3~0 != ~id5~0; 960#L330 assume ~id3~0 != ~id6~0; 916#L331 assume ~id4~0 != ~id5~0; 917#L332 assume ~id4~0 != ~id6~0; 952#L333 assume ~id5~0 != ~id6~0;init_~tmp~0#1 := 1; 992#L293-1 init_#res#1 := init_~tmp~0#1; 1027#L458 main_#t~ret47#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret47#1;havoc main_#t~ret47#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 969#L22 assume !(0 == assume_abort_if_not_~cond#1); 970#L21 assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 985#L534-2 [2021-12-15 17:22:58,720 INFO L793 eck$LassoCheckResult]: Loop: 985#L534-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 986#L84 assume !(0 != ~mode1~0 % 256); 1032#L107 assume !(0 != ~alive1~0 % 256); 1003#L110 assume !(~send1~0 != ~id1~0); 968#L110-2 ~mode1~0 := 1; 950#L84-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 951#L124 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 1016#L127 assume !(node2_~m2~0#1 != ~nomsg~0); 983#L127-1 ~mode2~0 := 0; 993#L124-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 935#L158 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 927#L161 assume !(node3_~m3~0#1 != ~nomsg~0); 929#L161-1 ~mode3~0 := 0; 919#L158-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_#t~ite11#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 930#L192 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 1022#L195 assume !(node4_~m4~0#1 != ~nomsg~0); 978#L195-1 ~mode4~0 := 0; 979#L192-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite12#1, node5_#t~ite13#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 920#L226 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 922#L229 assume !(node5_~m5~0#1 != ~nomsg~0); 987#L229-1 ~mode5~0 := 0; 934#L226-2 assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_#t~ite14#1, node6_#t~ite15#1, node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0; 965#L260 assume 0 != ~mode6~0 % 256;node6_~m6~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 1001#L263 assume !(node6_~m6~0#1 != ~nomsg~0); 942#L263-1 ~mode6~0 := 0; 1020#L260-2 assume { :end_inline_node6 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 1021#L466 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1; 1036#L467 assume ~r1~0 % 256 < 6;check_~tmp~1#1 := 1; 1006#L466-1 check_#res#1 := check_~tmp~1#1; 1007#L478 main_#t~ret48#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret48#1;havoc main_#t~ret48#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; 1029#L566 assume !(0 == assert_~arg#1 % 256); 1004#L561 assume { :end_inline_assert } true; 985#L534-2 [2021-12-15 17:22:58,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1766357374, now seen corresponding path program 2 times [2021-12-15 17:22:58,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:58,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496099654] [2021-12-15 17:22:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:58,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:58,781 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:58,869 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:58,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash 986038564, now seen corresponding path program 1 times [2021-12-15 17:22:58,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:58,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528428314] [2021-12-15 17:22:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:58,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:58,915 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:58,941 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:58,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1952775259, now seen corresponding path program 1 times [2021-12-15 17:22:58,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:58,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794191629] [2021-12-15 17:22:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:58,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:59,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:59,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794191629] [2021-12-15 17:22:59,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794191629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:59,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:59,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:22:59,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937863296] [2021-12-15 17:22:59,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:00,107 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:548) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLoopTermination(LassoCheck.java:944) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:834) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 17:23:00,110 INFO L158 Benchmark]: Toolchain (without parser) took 4594.55ms. Allocated memory was 86.0MB in the beginning and 127.9MB in the end (delta: 41.9MB). Free memory was 61.1MB in the beginning and 93.9MB in the end (delta: -32.8MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. [2021-12-15 17:23:00,111 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 86.0MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:23:00,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 658.56ms. Allocated memory is still 86.0MB. Free memory was 60.9MB in the beginning and 54.5MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:23:00,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.09ms. Allocated memory is still 86.0MB. Free memory was 54.4MB in the beginning and 51.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:23:00,112 INFO L158 Benchmark]: Boogie Preprocessor took 66.31ms. Allocated memory is still 86.0MB. Free memory was 51.5MB in the beginning and 49.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:23:00,112 INFO L158 Benchmark]: RCFGBuilder took 814.48ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 49.1MB in the beginning and 66.2MB in the end (delta: -17.0MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-12-15 17:23:00,113 INFO L158 Benchmark]: BuchiAutomizer took 2946.64ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 66.2MB in the beginning and 93.9MB in the end (delta: -27.8MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2021-12-15 17:23:00,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 86.0MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 658.56ms. Allocated memory is still 86.0MB. Free memory was 60.9MB in the beginning and 54.5MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.09ms. Allocated memory is still 86.0MB. Free memory was 54.4MB in the beginning and 51.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.31ms. Allocated memory is still 86.0MB. Free memory was 51.5MB in the beginning and 49.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 814.48ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 49.1MB in the beginning and 66.2MB in the end (delta: -17.0MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 2946.64ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 66.2MB in the beginning and 93.9MB in the end (delta: -27.8MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 17:23:00,164 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 Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable