./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.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_opt-floodmax.4.1.ufo.BOUNDED-8.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 77af8780d2ec99ad0d03b475aa25db67a7ba0a218594f51cddbe35460cd2b670 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:23:18,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:23:18,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:23:18,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:23:18,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:23:18,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:23:18,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:23:18,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:23:18,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:23:18,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:23:18,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:23:18,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:23:18,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:23:18,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:23:18,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:23:18,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:23:18,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:23:18,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:23:18,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:23:18,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:23:18,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:23:18,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:23:18,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:23:18,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:23:18,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:23:18,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:23:18,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:23:18,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:23:18,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:23:18,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:23:18,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:23:18,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:23:18,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:23:18,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:23:18,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:23:18,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:23:18,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:23:18,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:23:18,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:23:18,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:23:18,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:23:18,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:23:18,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:23:18,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:23:18,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:23:18,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:23:18,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:23:18,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:23:18,838 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:23:18,839 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:23:18,839 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:23:18,839 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:23:18,839 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:23:18,839 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:23:18,839 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:23:18,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:23:18,839 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:23:18,839 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:23:18,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:23:18,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:23:18,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:23:18,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:23:18,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:23:18,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:23:18,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:23:18,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:23:18,840 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:23:18,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:23:18,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:23:18,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:23:18,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:23:18,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:23:18,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:23:18,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:23:18,841 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:23:18,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77af8780d2ec99ad0d03b475aa25db67a7ba0a218594f51cddbe35460cd2b670 [2021-12-15 17:23:19,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:23:19,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:23:19,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:23:19,052 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:23:19,053 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:23:19,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2021-12-15 17:23:19,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c3933e0a/21df63c241d045e28547f9662cf2ee3f/FLAGbef11e6c9 [2021-12-15 17:23:19,448 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:23:19,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2021-12-15 17:23:19,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c3933e0a/21df63c241d045e28547f9662cf2ee3f/FLAGbef11e6c9 [2021-12-15 17:23:19,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c3933e0a/21df63c241d045e28547f9662cf2ee3f [2021-12-15 17:23:19,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:23:19,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:23:19,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:23:19,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:23:19,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:23:19,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:23:19" (1/1) ... [2021-12-15 17:23:19,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@736e2ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:19, skipping insertion in model container [2021-12-15 17:23:19,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:23:19" (1/1) ... [2021-12-15 17:23:19,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:23:19,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:23:20,116 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_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c[26618,26631] [2021-12-15 17:23:20,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:23:20,122 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:23:20,178 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_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c[26618,26631] [2021-12-15 17:23:20,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:23:20,194 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:23:20,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20 WrapperNode [2021-12-15 17:23:20,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:23:20,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:23:20,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:23:20,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:23:20,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (1/1) ... [2021-12-15 17:23:20,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (1/1) ... [2021-12-15 17:23:20,252 INFO L137 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 957 [2021-12-15 17:23:20,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:23:20,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:23:20,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:23:20,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:23:20,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (1/1) ... [2021-12-15 17:23:20,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (1/1) ... [2021-12-15 17:23:20,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (1/1) ... [2021-12-15 17:23:20,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (1/1) ... [2021-12-15 17:23:20,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (1/1) ... [2021-12-15 17:23:20,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (1/1) ... [2021-12-15 17:23:20,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (1/1) ... [2021-12-15 17:23:20,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:23:20,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:23:20,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:23:20,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:23:20,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (1/1) ... [2021-12-15 17:23:20,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:23:20,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:23:20,348 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 17:23:20,366 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 17:23:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:23:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:23:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:23:20,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:23:20,501 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:23:20,502 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:23:21,176 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:23:21,188 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:23:21,191 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 17:23:21,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:23:21 BoogieIcfgContainer [2021-12-15 17:23:21,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:23:21,196 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:23:21,196 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:23:21,198 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:23:21,198 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:23:21,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:23:19" (1/3) ... [2021-12-15 17:23:21,199 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66663668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:23:21, skipping insertion in model container [2021-12-15 17:23:21,200 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:23:21,200 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:20" (2/3) ... [2021-12-15 17:23:21,200 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66663668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:23:21, skipping insertion in model container [2021-12-15 17:23:21,200 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:23:21,200 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:23:21" (3/3) ... [2021-12-15 17:23:21,201 INFO L388 chiAutomizerObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2021-12-15 17:23:21,235 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:23:21,235 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:23:21,235 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:23:21,235 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:23:21,235 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:23:21,236 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:23:21,236 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:23:21,236 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:23:21,262 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 311 states, 310 states have (on average 1.7967741935483872) internal successors, (557), 310 states have internal predecessors, (557), 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 17:23:21,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 123 [2021-12-15 17:23:21,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:23:21,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:23:21,319 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:23:21,319 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] [2021-12-15 17:23:21,319 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:23:21,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 311 states, 310 states have (on average 1.7967741935483872) internal successors, (557), 310 states have internal predecessors, (557), 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 17:23:21,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 123 [2021-12-15 17:23:21,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:23:21,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:23:21,331 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:23:21,331 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] [2021-12-15 17:23:21,337 INFO L791 eck$LassoCheckResult]: Stem: 294#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(43, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p14~0 := 0;~p14_old~0 := 0;~p14_new~0 := 0;~ep14~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p24~0 := 0;~p24_old~0 := 0;~p24_new~0 := 0;~ep24~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~p34~0 := 0;~p34_old~0 := 0;~p34_new~0 := 0;~ep34~0 := 0;~p41~0 := 0;~p41_old~0 := 0;~p41_new~0 := 0;~ep41~0 := 0;~p42~0 := 0;~p42_old~0 := 0;~p42_new~0 := 0;~ep42~0 := 0;~p43~0 := 0;~p43_old~0 := 0;~p43_new~0 := 0;~ep43~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~newmax1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~newmax2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~newmax3~0 := 0;~id4~0 := 0;~r4~0 := 0;~st4~0 := 0;~nl4~0 := 0;~m4~0 := 0;~max4~0 := 0;~mode4~0 := 0;~newmax4~0 := 0; 204#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~nondet47#1, main_#t~nondet48#1, main_#t~nondet49#1, main_#t~nondet50#1, main_#t~nondet51#1, main_#t~nondet52#1, main_#t~nondet53#1, main_#t~nondet54#1, main_#t~nondet55#1, main_#t~nondet56#1, main_#t~nondet57#1, main_#t~nondet58#1, main_#t~nondet59#1, main_#t~ret60#1, main_#t~ret61#1, main_#t~post62#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~ep12~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~ep13~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~ep14~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~ep21~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~ep23~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~ep24~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~ep31~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~ep32~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~ep34~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~ep41~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~ep42~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~ep43~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~id1~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~r1~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~st1~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~nl1~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~m1~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~max1~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~mode1~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~newmax1~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~id2~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~r2~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st2~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~nl2~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~m2~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~max2~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~mode2~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~newmax2~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~id3~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~r3~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~st3~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;~nl3~0 := main_#t~nondet47#1;havoc main_#t~nondet47#1;~m3~0 := main_#t~nondet48#1;havoc main_#t~nondet48#1;~max3~0 := main_#t~nondet49#1;havoc main_#t~nondet49#1;~mode3~0 := main_#t~nondet50#1;havoc main_#t~nondet50#1;~newmax3~0 := main_#t~nondet51#1;havoc main_#t~nondet51#1;~id4~0 := main_#t~nondet52#1;havoc main_#t~nondet52#1;~r4~0 := main_#t~nondet53#1;havoc main_#t~nondet53#1;~st4~0 := main_#t~nondet54#1;havoc main_#t~nondet54#1;~nl4~0 := main_#t~nondet55#1;havoc main_#t~nondet55#1;~m4~0 := main_#t~nondet56#1;havoc main_#t~nondet56#1;~max4~0 := main_#t~nondet57#1;havoc main_#t~nondet57#1;~mode4~0 := main_#t~nondet58#1;havoc main_#t~nondet58#1;~newmax4~0 := main_#t~nondet59#1;havoc main_#t~nondet59#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r141~0#1, init_~r211~0#1, init_~r231~0#1, init_~r241~0#1, init_~r311~0#1, init_~r321~0#1, init_~r341~0#1, init_~r411~0#1, init_~r421~0#1, init_~r431~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r142~0#1, init_~tmp___1~0#1, init_~r212~0#1, init_~tmp___2~0#1, init_~r232~0#1, init_~tmp___3~0#1, init_~r242~0#1, init_~tmp___4~0#1, init_~r312~0#1, init_~tmp___5~0#1, init_~r322~0#1, init_~tmp___6~0#1, init_~r342~0#1, init_~tmp___7~0#1, init_~r412~0#1, init_~tmp___8~0#1, init_~r422~0#1, init_~tmp___9~0#1, init_~r432~0#1, init_~tmp___10~0#1, init_~r123~0#1, init_~tmp___11~0#1, init_~r133~0#1, init_~tmp___12~0#1, init_~r143~0#1, init_~tmp___13~0#1, init_~r213~0#1, init_~tmp___14~0#1, init_~r233~0#1, init_~tmp___15~0#1, init_~r243~0#1, init_~tmp___16~0#1, init_~r313~0#1, init_~tmp___17~0#1, init_~r323~0#1, init_~tmp___18~0#1, init_~r343~0#1, init_~tmp___19~0#1, init_~r413~0#1, init_~tmp___20~0#1, init_~r423~0#1, init_~tmp___21~0#1, init_~r433~0#1, init_~tmp___22~0#1, init_~tmp___23~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r141~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r241~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r341~0#1;havoc init_~r411~0#1;havoc init_~r421~0#1;havoc init_~r431~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r142~0#1;havoc init_~tmp___1~0#1;havoc init_~r212~0#1;havoc init_~tmp___2~0#1;havoc init_~r232~0#1;havoc init_~tmp___3~0#1;havoc init_~r242~0#1;havoc init_~tmp___4~0#1;havoc init_~r312~0#1;havoc init_~tmp___5~0#1;havoc init_~r322~0#1;havoc init_~tmp___6~0#1;havoc init_~r342~0#1;havoc init_~tmp___7~0#1;havoc init_~r412~0#1;havoc init_~tmp___8~0#1;havoc init_~r422~0#1;havoc init_~tmp___9~0#1;havoc init_~r432~0#1;havoc init_~tmp___10~0#1;havoc init_~r123~0#1;havoc init_~tmp___11~0#1;havoc init_~r133~0#1;havoc init_~tmp___12~0#1;havoc init_~r143~0#1;havoc init_~tmp___13~0#1;havoc init_~r213~0#1;havoc init_~tmp___14~0#1;havoc init_~r233~0#1;havoc init_~tmp___15~0#1;havoc init_~r243~0#1;havoc init_~tmp___16~0#1;havoc init_~r313~0#1;havoc init_~tmp___17~0#1;havoc init_~r323~0#1;havoc init_~tmp___18~0#1;havoc init_~r343~0#1;havoc init_~tmp___19~0#1;havoc init_~r413~0#1;havoc init_~tmp___20~0#1;havoc init_~r423~0#1;havoc init_~tmp___21~0#1;havoc init_~r433~0#1;havoc init_~tmp___22~0#1;havoc init_~tmp___23~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r141~0#1 := ~ep14~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r241~0#1 := ~ep24~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0;init_~r341~0#1 := ~ep34~0;init_~r411~0#1 := ~ep41~0;init_~r421~0#1 := ~ep42~0;init_~r431~0#1 := ~ep43~0; 33#L441true assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 239#L452true init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 105#L462true assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 149#L473true init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 277#L483true assume 0 != init_~r141~0#1 % 256;init_~tmp___1~0#1 := 1; 242#L494true init_~r142~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 243#L504true assume 0 != init_~r211~0#1 % 256;init_~tmp___2~0#1 := 1; 58#L515true init_~r212~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 3#L525true assume 0 != init_~r231~0#1 % 256;init_~tmp___3~0#1 := 1; 233#L536true init_~r232~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 53#L546true assume 0 != init_~r241~0#1 % 256;init_~tmp___4~0#1 := 1; 310#L557true init_~r242~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 67#L567true assume 0 != init_~r311~0#1 % 256;init_~tmp___5~0#1 := 1; 210#L578true init_~r312~0#1 := (if 0 == init_~tmp___5~0#1 then 0 else 1); 115#L588true assume 0 != init_~r321~0#1 % 256;init_~tmp___6~0#1 := 1; 227#L599true init_~r322~0#1 := (if 0 == init_~tmp___6~0#1 then 0 else 1); 102#L609true assume 0 != init_~r341~0#1 % 256;init_~tmp___7~0#1 := 1; 75#L620true init_~r342~0#1 := (if 0 == init_~tmp___7~0#1 then 0 else 1); 107#L630true assume 0 != init_~r411~0#1 % 256;init_~tmp___8~0#1 := 1; 206#L641true init_~r412~0#1 := (if 0 == init_~tmp___8~0#1 then 0 else 1); 292#L651true assume 0 != init_~r421~0#1 % 256;init_~tmp___9~0#1 := 1; 212#L662true init_~r422~0#1 := (if 0 == init_~tmp___9~0#1 then 0 else 1); 139#L672true assume 0 != init_~r431~0#1 % 256;init_~tmp___10~0#1 := 1; 247#L683true init_~r432~0#1 := (if 0 == init_~tmp___10~0#1 then 0 else 1); 298#L693true assume 0 != init_~r122~0#1 % 256;init_~tmp___11~0#1 := 1; 224#L704true init_~r123~0#1 := (if 0 == init_~tmp___11~0#1 then 0 else 1); 169#L714true assume 0 != init_~r132~0#1 % 256;init_~tmp___12~0#1 := 1; 13#L725true init_~r133~0#1 := (if 0 == init_~tmp___12~0#1 then 0 else 1); 304#L735true assume 0 != init_~r142~0#1 % 256;init_~tmp___13~0#1 := 1; 114#L746true init_~r143~0#1 := (if 0 == init_~tmp___13~0#1 then 0 else 1); 96#L756true assume 0 != init_~r212~0#1 % 256;init_~tmp___14~0#1 := 1; 281#L767true init_~r213~0#1 := (if 0 == init_~tmp___14~0#1 then 0 else 1); 36#L777true assume 0 != init_~r232~0#1 % 256;init_~tmp___15~0#1 := 1; 156#L788true init_~r233~0#1 := (if 0 == init_~tmp___15~0#1 then 0 else 1); 209#L798true assume 0 != init_~r242~0#1 % 256;init_~tmp___16~0#1 := 1; 300#L809true init_~r243~0#1 := (if 0 == init_~tmp___16~0#1 then 0 else 1); 213#L819true assume 0 != init_~r312~0#1 % 256;init_~tmp___17~0#1 := 1; 278#L830true init_~r313~0#1 := (if 0 == init_~tmp___17~0#1 then 0 else 1); 134#L840true assume 0 != init_~r322~0#1 % 256;init_~tmp___18~0#1 := 1; 250#L851true init_~r323~0#1 := (if 0 == init_~tmp___18~0#1 then 0 else 1); 193#L861true assume 0 != init_~r342~0#1 % 256;init_~tmp___19~0#1 := 1; 253#L872true init_~r343~0#1 := (if 0 == init_~tmp___19~0#1 then 0 else 1); 203#L882true assume 0 != init_~r412~0#1 % 256;init_~tmp___20~0#1 := 1; 103#L893true init_~r413~0#1 := (if 0 == init_~tmp___20~0#1 then 0 else 1); 273#L903true assume 0 != init_~r422~0#1 % 256;init_~tmp___21~0#1 := 1; 99#L914true init_~r423~0#1 := (if 0 == init_~tmp___21~0#1 then 0 else 1); 260#L924true assume 0 != init_~r432~0#1 % 256;init_~tmp___22~0#1 := 1; 89#L935true init_~r433~0#1 := (if 0 == init_~tmp___22~0#1 then 0 else 1); 129#L945true assume !(~id1~0 != ~id2~0);init_~tmp___23~0#1 := 0; 215#L945-1true init_#res#1 := init_~tmp___23~0#1; 100#L1082true main_#t~ret60#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret60#1;havoc main_#t~ret60#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; 123#L21true assume !(0 == assume_abort_if_not_~cond#1); 183#L20true assume { :end_inline_assume_abort_if_not } true;~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p14_old~0 := ~nomsg~0;~p14_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p24_old~0 := ~nomsg~0;~p24_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;~p34_old~0 := ~nomsg~0;~p34_new~0 := ~nomsg~0;~p41_old~0 := ~nomsg~0;~p41_new~0 := ~nomsg~0;~p42_old~0 := ~nomsg~0;~p42_new~0 := ~nomsg~0;~p43_old~0 := ~nomsg~0;~p43_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 22#L1223-2true [2021-12-15 17:23:21,338 INFO L793 eck$LassoCheckResult]: Loop: 22#L1223-2true assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_#t~ite6#1, node1_~newmax~0#1;havoc node1_~newmax~0#1;node1_~newmax~0#1 := 0; 72#L114true assume !(0 != ~mode1~0 % 256); 268#L150true assume !(~r1~0 < 3); 170#L150-1true ~mode1~0 := 1; 59#L114-2true assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite7#1, node2_#t~ite8#1, node2_#t~ite9#1, node2_~newmax~1#1;havoc node2_~newmax~1#1;node2_~newmax~1#1 := 0; 43#L178true assume !(0 != ~mode2~0 % 256); 303#L214true assume !(~r2~0 < 3); 106#L214-1true ~mode2~0 := 1; 171#L178-2true assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite10#1, node3_#t~ite11#1, node3_#t~ite12#1, node3_~newmax~2#1;havoc node3_~newmax~2#1;node3_~newmax~2#1 := 0; 311#L242true assume !(0 != ~mode3~0 % 256); 162#L278true assume !(~r3~0 < 3); 127#L278-1true ~mode3~0 := 1; 221#L242-2true assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite13#1, node4_#t~ite14#1, node4_#t~ite15#1, node4_~newmax~3#1;havoc node4_~newmax~3#1;node4_~newmax~3#1 := 0; 152#L306true assume !(0 != ~mode4~0 % 256); 52#L342true assume !(~r4~0 < 3); 17#L342-1true ~mode4~0 := 1; 62#L306-2true assume { :end_inline_node4 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p14_old~0 := ~p14_new~0;~p14_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p24_old~0 := ~p24_new~0;~p24_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;~p34_old~0 := ~p34_new~0;~p34_new~0 := ~nomsg~0;~p41_old~0 := ~p41_new~0;~p41_new~0 := ~nomsg~0;~p42_old~0 := ~p42_new~0;~p42_new~0 := ~nomsg~0;~p43_old~0 := ~p43_new~0;~p43_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 41#L1090true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1#1 := 0; 37#L1090-1true check_#res#1 := check_~tmp~1#1; 267#L1142true main_#t~ret61#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret61#1;havoc main_#t~ret61#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; 39#L1266true assume !(0 == assert_~arg#1 % 256); 257#L1261true assume { :end_inline_assert } true;main_#t~post62#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post62#1;havoc main_#t~post62#1; 22#L1223-2true [2021-12-15 17:23:21,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:21,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1995424982, now seen corresponding path program 1 times [2021-12-15 17:23:21,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:21,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024550047] [2021-12-15 17:23:21,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:21,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:21,581 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 17:23:21,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:21,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024550047] [2021-12-15 17:23:21,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024550047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:21,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:21,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:23:21,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683675656] [2021-12-15 17:23:21,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:21,591 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:23:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:21,594 INFO L85 PathProgramCache]: Analyzing trace with hash 967034741, now seen corresponding path program 1 times [2021-12-15 17:23:21,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:21,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115187709] [2021-12-15 17:23:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:21,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:21,674 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 17:23:21,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:21,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115187709] [2021-12-15 17:23:21,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115187709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:21,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:21,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:23:21,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197270775] [2021-12-15 17:23:21,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:21,677 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:23:21,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:23:21,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:23:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:23:21,708 INFO L87 Difference]: Start difference. First operand has 311 states, 310 states have (on average 1.7967741935483872) internal successors, (557), 310 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:23:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:23:21,782 INFO L93 Difference]: Finished difference Result 315 states and 557 transitions. [2021-12-15 17:23:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:23:21,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 557 transitions. [2021-12-15 17:23:21,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 122 [2021-12-15 17:23:21,816 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 306 states and 540 transitions. [2021-12-15 17:23:21,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 306 [2021-12-15 17:23:21,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 306 [2021-12-15 17:23:21,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 306 states and 540 transitions. [2021-12-15 17:23:21,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:23:21,823 INFO L681 BuchiCegarLoop]: Abstraction has 306 states and 540 transitions. [2021-12-15 17:23:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states and 540 transitions. [2021-12-15 17:23:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-12-15 17:23:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 306 states have (on average 1.7647058823529411) internal successors, (540), 305 states have internal predecessors, (540), 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 17:23:21,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 540 transitions. [2021-12-15 17:23:21,856 INFO L704 BuchiCegarLoop]: Abstraction has 306 states and 540 transitions. [2021-12-15 17:23:21,857 INFO L587 BuchiCegarLoop]: Abstraction has 306 states and 540 transitions. [2021-12-15 17:23:21,857 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 17:23:21,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 306 states and 540 transitions. [2021-12-15 17:23:21,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 122 [2021-12-15 17:23:21,858 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:23:21,858 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:23:21,860 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:23:21,860 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] [2021-12-15 17:23:21,860 INFO L791 eck$LassoCheckResult]: Stem: 948#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(43, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p14~0 := 0;~p14_old~0 := 0;~p14_new~0 := 0;~ep14~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p24~0 := 0;~p24_old~0 := 0;~p24_new~0 := 0;~ep24~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~p34~0 := 0;~p34_old~0 := 0;~p34_new~0 := 0;~ep34~0 := 0;~p41~0 := 0;~p41_old~0 := 0;~p41_new~0 := 0;~ep41~0 := 0;~p42~0 := 0;~p42_old~0 := 0;~p42_new~0 := 0;~ep42~0 := 0;~p43~0 := 0;~p43_old~0 := 0;~p43_new~0 := 0;~ep43~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~newmax1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~newmax2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~newmax3~0 := 0;~id4~0 := 0;~r4~0 := 0;~st4~0 := 0;~nl4~0 := 0;~m4~0 := 0;~max4~0 := 0;~mode4~0 := 0;~newmax4~0 := 0; 926#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~nondet47#1, main_#t~nondet48#1, main_#t~nondet49#1, main_#t~nondet50#1, main_#t~nondet51#1, main_#t~nondet52#1, main_#t~nondet53#1, main_#t~nondet54#1, main_#t~nondet55#1, main_#t~nondet56#1, main_#t~nondet57#1, main_#t~nondet58#1, main_#t~nondet59#1, main_#t~ret60#1, main_#t~ret61#1, main_#t~post62#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~ep12~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~ep13~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~ep14~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~ep21~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~ep23~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~ep24~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~ep31~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~ep32~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~ep34~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~ep41~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~ep42~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~ep43~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~id1~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~r1~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~st1~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~nl1~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~m1~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~max1~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~mode1~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~newmax1~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~id2~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~r2~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st2~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~nl2~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~m2~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~max2~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~mode2~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~newmax2~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~id3~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~r3~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~st3~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;~nl3~0 := main_#t~nondet47#1;havoc main_#t~nondet47#1;~m3~0 := main_#t~nondet48#1;havoc main_#t~nondet48#1;~max3~0 := main_#t~nondet49#1;havoc main_#t~nondet49#1;~mode3~0 := main_#t~nondet50#1;havoc main_#t~nondet50#1;~newmax3~0 := main_#t~nondet51#1;havoc main_#t~nondet51#1;~id4~0 := main_#t~nondet52#1;havoc main_#t~nondet52#1;~r4~0 := main_#t~nondet53#1;havoc main_#t~nondet53#1;~st4~0 := main_#t~nondet54#1;havoc main_#t~nondet54#1;~nl4~0 := main_#t~nondet55#1;havoc main_#t~nondet55#1;~m4~0 := main_#t~nondet56#1;havoc main_#t~nondet56#1;~max4~0 := main_#t~nondet57#1;havoc main_#t~nondet57#1;~mode4~0 := main_#t~nondet58#1;havoc main_#t~nondet58#1;~newmax4~0 := main_#t~nondet59#1;havoc main_#t~nondet59#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r141~0#1, init_~r211~0#1, init_~r231~0#1, init_~r241~0#1, init_~r311~0#1, init_~r321~0#1, init_~r341~0#1, init_~r411~0#1, init_~r421~0#1, init_~r431~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r142~0#1, init_~tmp___1~0#1, init_~r212~0#1, init_~tmp___2~0#1, init_~r232~0#1, init_~tmp___3~0#1, init_~r242~0#1, init_~tmp___4~0#1, init_~r312~0#1, init_~tmp___5~0#1, init_~r322~0#1, init_~tmp___6~0#1, init_~r342~0#1, init_~tmp___7~0#1, init_~r412~0#1, init_~tmp___8~0#1, init_~r422~0#1, init_~tmp___9~0#1, init_~r432~0#1, init_~tmp___10~0#1, init_~r123~0#1, init_~tmp___11~0#1, init_~r133~0#1, init_~tmp___12~0#1, init_~r143~0#1, init_~tmp___13~0#1, init_~r213~0#1, init_~tmp___14~0#1, init_~r233~0#1, init_~tmp___15~0#1, init_~r243~0#1, init_~tmp___16~0#1, init_~r313~0#1, init_~tmp___17~0#1, init_~r323~0#1, init_~tmp___18~0#1, init_~r343~0#1, init_~tmp___19~0#1, init_~r413~0#1, init_~tmp___20~0#1, init_~r423~0#1, init_~tmp___21~0#1, init_~r433~0#1, init_~tmp___22~0#1, init_~tmp___23~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r141~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r241~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r341~0#1;havoc init_~r411~0#1;havoc init_~r421~0#1;havoc init_~r431~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r142~0#1;havoc init_~tmp___1~0#1;havoc init_~r212~0#1;havoc init_~tmp___2~0#1;havoc init_~r232~0#1;havoc init_~tmp___3~0#1;havoc init_~r242~0#1;havoc init_~tmp___4~0#1;havoc init_~r312~0#1;havoc init_~tmp___5~0#1;havoc init_~r322~0#1;havoc init_~tmp___6~0#1;havoc init_~r342~0#1;havoc init_~tmp___7~0#1;havoc init_~r412~0#1;havoc init_~tmp___8~0#1;havoc init_~r422~0#1;havoc init_~tmp___9~0#1;havoc init_~r432~0#1;havoc init_~tmp___10~0#1;havoc init_~r123~0#1;havoc init_~tmp___11~0#1;havoc init_~r133~0#1;havoc init_~tmp___12~0#1;havoc init_~r143~0#1;havoc init_~tmp___13~0#1;havoc init_~r213~0#1;havoc init_~tmp___14~0#1;havoc init_~r233~0#1;havoc init_~tmp___15~0#1;havoc init_~r243~0#1;havoc init_~tmp___16~0#1;havoc init_~r313~0#1;havoc init_~tmp___17~0#1;havoc init_~r323~0#1;havoc init_~tmp___18~0#1;havoc init_~r343~0#1;havoc init_~tmp___19~0#1;havoc init_~r413~0#1;havoc init_~tmp___20~0#1;havoc init_~r423~0#1;havoc init_~tmp___21~0#1;havoc init_~r433~0#1;havoc init_~tmp___22~0#1;havoc init_~tmp___23~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r141~0#1 := ~ep14~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r241~0#1 := ~ep24~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0;init_~r341~0#1 := ~ep34~0;init_~r411~0#1 := ~ep41~0;init_~r421~0#1 := ~ep42~0;init_~r431~0#1 := ~ep43~0; 715#L441 assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 716#L452 init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 836#L462 assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 798#L473 init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 880#L483 assume 0 != init_~r141~0#1 % 256;init_~tmp___1~0#1 := 1; 912#L494 init_~r142~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 940#L504 assume 0 != init_~r211~0#1 % 256;init_~tmp___2~0#1 := 1; 743#L515 init_~r212~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 647#L525 assume 0 != init_~r231~0#1 % 256;init_~tmp___3~0#1 := 1; 648#L536 init_~r232~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 757#L546 assume 0 != init_~r241~0#1 % 256;init_~tmp___4~0#1 := 1; 758#L557 init_~r242~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 779#L567 assume 0 != init_~r311~0#1 % 256;init_~tmp___5~0#1 := 1; 780#L578 init_~r312~0#1 := (if 0 == init_~tmp___5~0#1 then 0 else 1); 846#L588 assume 0 != init_~r321~0#1 % 256;init_~tmp___6~0#1 := 1; 699#L599 init_~r322~0#1 := (if 0 == init_~tmp___6~0#1 then 0 else 1); 834#L609 assume 0 != init_~r341~0#1 % 256;init_~tmp___7~0#1 := 1; 763#L620 init_~r342~0#1 := (if 0 == init_~tmp___7~0#1 then 0 else 1); 796#L630 assume 0 != init_~r411~0#1 % 256;init_~tmp___8~0#1 := 1; 741#L641 init_~r412~0#1 := (if 0 == init_~tmp___8~0#1 then 0 else 1); 927#L651 assume 0 != init_~r421~0#1 % 256;init_~tmp___9~0#1 := 1; 701#L662 init_~r422~0#1 := (if 0 == init_~tmp___9~0#1 then 0 else 1); 873#L672 assume 0 != init_~r431~0#1 % 256;init_~tmp___10~0#1 := 1; 874#L683 init_~r432~0#1 := (if 0 == init_~tmp___10~0#1 then 0 else 1); 941#L693 assume 0 != init_~r122~0#1 % 256;init_~tmp___11~0#1 := 1; 687#L704 init_~r123~0#1 := (if 0 == init_~tmp___11~0#1 then 0 else 1); 902#L714 assume 0 != init_~r132~0#1 % 256;init_~tmp___12~0#1 := 1; 672#L725 init_~r133~0#1 := (if 0 == init_~tmp___12~0#1 then 0 else 1); 673#L735 assume 0 != init_~r142~0#1 % 256;init_~tmp___13~0#1 := 1; 651#L746 init_~r143~0#1 := (if 0 == init_~tmp___13~0#1 then 0 else 1); 823#L756 assume 0 != init_~r212~0#1 % 256;init_~tmp___14~0#1 := 1; 664#L767 init_~r213~0#1 := (if 0 == init_~tmp___14~0#1 then 0 else 1); 720#L777 assume 0 != init_~r232~0#1 % 256;init_~tmp___15~0#1 := 1; 721#L788 init_~r233~0#1 := (if 0 == init_~tmp___15~0#1 then 0 else 1); 889#L798 assume 0 != init_~r242~0#1 % 256;init_~tmp___16~0#1 := 1; 864#L809 init_~r243~0#1 := (if 0 == init_~tmp___16~0#1 then 0 else 1); 930#L819 assume 0 != init_~r312~0#1 % 256;init_~tmp___17~0#1 := 1; 898#L830 init_~r313~0#1 := (if 0 == init_~tmp___17~0#1 then 0 else 1); 868#L840 assume 0 != init_~r322~0#1 % 256;init_~tmp___18~0#1 := 1; 822#L851 init_~r323~0#1 := (if 0 == init_~tmp___18~0#1 then 0 else 1); 920#L861 assume 0 != init_~r342~0#1 % 256;init_~tmp___19~0#1 := 1; 769#L872 init_~r343~0#1 := (if 0 == init_~tmp___19~0#1 then 0 else 1); 925#L882 assume 0 != init_~r412~0#1 % 256;init_~tmp___20~0#1 := 1; 748#L893 init_~r413~0#1 := (if 0 == init_~tmp___20~0#1 then 0 else 1); 835#L903 assume 0 != init_~r422~0#1 % 256;init_~tmp___21~0#1 := 1; 828#L914 init_~r423~0#1 := (if 0 == init_~tmp___21~0#1 then 0 else 1); 829#L924 assume 0 != init_~r432~0#1 % 256;init_~tmp___22~0#1 := 1; 812#L935 init_~r433~0#1 := (if 0 == init_~tmp___22~0#1 then 0 else 1); 813#L945 assume !(~id1~0 != ~id2~0);init_~tmp___23~0#1 := 0; 658#L945-1 init_#res#1 := init_~tmp___23~0#1; 830#L1082 main_#t~ret60#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret60#1;havoc main_#t~ret60#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; 831#L21 assume !(0 == assume_abort_if_not_~cond#1); 856#L20 assume { :end_inline_assume_abort_if_not } true;~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p14_old~0 := ~nomsg~0;~p14_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p24_old~0 := ~nomsg~0;~p24_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;~p34_old~0 := ~nomsg~0;~p34_new~0 := ~nomsg~0;~p41_old~0 := ~nomsg~0;~p41_new~0 := ~nomsg~0;~p42_old~0 := ~nomsg~0;~p42_new~0 := ~nomsg~0;~p43_old~0 := ~nomsg~0;~p43_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 689#L1223-2 [2021-12-15 17:23:21,860 INFO L793 eck$LassoCheckResult]: Loop: 689#L1223-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_#t~ite6#1, node1_~newmax~0#1;havoc node1_~newmax~0#1;node1_~newmax~0#1 := 0; 690#L114 assume !(0 != ~mode1~0 % 256); 789#L150 assume !(~r1~0 < 3); 784#L150-1 ~mode1~0 := 1; 767#L114-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite7#1, node2_#t~ite8#1, node2_#t~ite9#1, node2_~newmax~1#1;havoc node2_~newmax~1#1;node2_~newmax~1#1 := 0; 734#L178 assume !(0 != ~mode2~0 % 256); 735#L214 assume !(~r2~0 < 3); 685#L214-1 ~mode2~0 := 1; 838#L178-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite10#1, node3_#t~ite11#1, node3_#t~ite12#1, node3_~newmax~2#1;havoc node3_~newmax~2#1;node3_~newmax~2#1 := 0; 903#L242 assume !(0 != ~mode3~0 % 256); 895#L278 assume !(~r3~0 < 3); 801#L278-1 ~mode3~0 := 1; 855#L242-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite13#1, node4_#t~ite14#1, node4_#t~ite15#1, node4_~newmax~3#1;havoc node4_~newmax~3#1;node4_~newmax~3#1 := 0; 883#L306 assume !(0 != ~mode4~0 % 256); 753#L342 assume !(~r4~0 < 3); 678#L342-1 ~mode4~0 := 1; 679#L306-2 assume { :end_inline_node4 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p14_old~0 := ~p14_new~0;~p14_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p24_old~0 := ~p24_new~0;~p24_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;~p34_old~0 := ~p34_new~0;~p34_new~0 := ~nomsg~0;~p41_old~0 := ~p41_new~0;~p41_new~0 := ~nomsg~0;~p42_old~0 := ~p42_new~0;~p42_new~0 := ~nomsg~0;~p43_old~0 := ~p43_new~0;~p43_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 732#L1090 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 733#L1091 assume ~st1~0 + ~nl1~0 <= 1; 804#L1092 assume ~st2~0 + ~nl2~0 <= 1; 915#L1093 assume ~st3~0 + ~nl3~0 <= 1; 939#L1094 assume ~st4~0 + ~nl4~0 <= 1; 936#L1095 assume ~r1~0 >= 3; 827#L1099 assume ~r1~0 < 3; 943#L1104 assume ~r1~0 >= 3; 719#L1109 assume ~r1~0 < 3;check_~tmp~1#1 := 1; 723#L1090-1 check_#res#1 := check_~tmp~1#1; 724#L1142 main_#t~ret61#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret61#1;havoc main_#t~ret61#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; 727#L1266 assume !(0 == assert_~arg#1 % 256); 728#L1261 assume { :end_inline_assert } true;main_#t~post62#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post62#1;havoc main_#t~post62#1; 689#L1223-2 [2021-12-15 17:23:21,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1995424982, now seen corresponding path program 2 times [2021-12-15 17:23:21,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:21,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452120906] [2021-12-15 17:23:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:21,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:21,945 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 17:23:21,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:21,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452120906] [2021-12-15 17:23:21,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452120906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:21,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:21,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:23:21,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518533772] [2021-12-15 17:23:21,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:21,949 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:23:21,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:21,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1889919164, now seen corresponding path program 1 times [2021-12-15 17:23:21,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:21,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14903729] [2021-12-15 17:23:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:21,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:22,027 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 17:23:22,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:22,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14903729] [2021-12-15 17:23:22,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14903729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:22,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:22,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:23:22,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025252860] [2021-12-15 17:23:22,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:22,031 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:23:22,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:23:22,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 17:23:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 17:23:22,032 INFO L87 Difference]: Start difference. First operand 306 states and 540 transitions. cyclomatic complexity: 235 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 17:23:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:23:22,077 INFO L93 Difference]: Finished difference Result 403 states and 695 transitions. [2021-12-15 17:23:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 17:23:22,078 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 403 states and 695 transitions. [2021-12-15 17:23:22,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 219 [2021-12-15 17:23:22,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 403 states to 403 states and 695 transitions. [2021-12-15 17:23:22,098 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 403 [2021-12-15 17:23:22,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 403 [2021-12-15 17:23:22,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 403 states and 695 transitions. [2021-12-15 17:23:22,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:23:22,102 INFO L681 BuchiCegarLoop]: Abstraction has 403 states and 695 transitions. [2021-12-15 17:23:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states and 695 transitions. [2021-12-15 17:23:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-12-15 17:23:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 403 states have (on average 1.7245657568238213) internal successors, (695), 402 states have internal predecessors, (695), 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 17:23:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 695 transitions. [2021-12-15 17:23:22,117 INFO L704 BuchiCegarLoop]: Abstraction has 403 states and 695 transitions. [2021-12-15 17:23:22,117 INFO L587 BuchiCegarLoop]: Abstraction has 403 states and 695 transitions. [2021-12-15 17:23:22,117 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-15 17:23:22,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 403 states and 695 transitions. [2021-12-15 17:23:22,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 219 [2021-12-15 17:23:22,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:23:22,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:23:22,121 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:23:22,122 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, 1, 1, 1] [2021-12-15 17:23:22,122 INFO L791 eck$LassoCheckResult]: Stem: 1672#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(43, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p14~0 := 0;~p14_old~0 := 0;~p14_new~0 := 0;~ep14~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p24~0 := 0;~p24_old~0 := 0;~p24_new~0 := 0;~ep24~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~p34~0 := 0;~p34_old~0 := 0;~p34_new~0 := 0;~ep34~0 := 0;~p41~0 := 0;~p41_old~0 := 0;~p41_new~0 := 0;~ep41~0 := 0;~p42~0 := 0;~p42_old~0 := 0;~p42_new~0 := 0;~ep42~0 := 0;~p43~0 := 0;~p43_old~0 := 0;~p43_new~0 := 0;~ep43~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~newmax1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~newmax2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~newmax3~0 := 0;~id4~0 := 0;~r4~0 := 0;~st4~0 := 0;~nl4~0 := 0;~m4~0 := 0;~max4~0 := 0;~mode4~0 := 0;~newmax4~0 := 0; 1649#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~nondet47#1, main_#t~nondet48#1, main_#t~nondet49#1, main_#t~nondet50#1, main_#t~nondet51#1, main_#t~nondet52#1, main_#t~nondet53#1, main_#t~nondet54#1, main_#t~nondet55#1, main_#t~nondet56#1, main_#t~nondet57#1, main_#t~nondet58#1, main_#t~nondet59#1, main_#t~ret60#1, main_#t~ret61#1, main_#t~post62#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~ep12~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~ep13~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~ep14~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~ep21~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~ep23~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~ep24~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~ep31~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~ep32~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~ep34~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~ep41~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~ep42~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~ep43~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~id1~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~r1~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~st1~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~nl1~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~m1~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~max1~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~mode1~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~newmax1~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~id2~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~r2~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st2~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~nl2~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~m2~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~max2~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~mode2~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~newmax2~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~id3~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~r3~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~st3~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;~nl3~0 := main_#t~nondet47#1;havoc main_#t~nondet47#1;~m3~0 := main_#t~nondet48#1;havoc main_#t~nondet48#1;~max3~0 := main_#t~nondet49#1;havoc main_#t~nondet49#1;~mode3~0 := main_#t~nondet50#1;havoc main_#t~nondet50#1;~newmax3~0 := main_#t~nondet51#1;havoc main_#t~nondet51#1;~id4~0 := main_#t~nondet52#1;havoc main_#t~nondet52#1;~r4~0 := main_#t~nondet53#1;havoc main_#t~nondet53#1;~st4~0 := main_#t~nondet54#1;havoc main_#t~nondet54#1;~nl4~0 := main_#t~nondet55#1;havoc main_#t~nondet55#1;~m4~0 := main_#t~nondet56#1;havoc main_#t~nondet56#1;~max4~0 := main_#t~nondet57#1;havoc main_#t~nondet57#1;~mode4~0 := main_#t~nondet58#1;havoc main_#t~nondet58#1;~newmax4~0 := main_#t~nondet59#1;havoc main_#t~nondet59#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r141~0#1, init_~r211~0#1, init_~r231~0#1, init_~r241~0#1, init_~r311~0#1, init_~r321~0#1, init_~r341~0#1, init_~r411~0#1, init_~r421~0#1, init_~r431~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r142~0#1, init_~tmp___1~0#1, init_~r212~0#1, init_~tmp___2~0#1, init_~r232~0#1, init_~tmp___3~0#1, init_~r242~0#1, init_~tmp___4~0#1, init_~r312~0#1, init_~tmp___5~0#1, init_~r322~0#1, init_~tmp___6~0#1, init_~r342~0#1, init_~tmp___7~0#1, init_~r412~0#1, init_~tmp___8~0#1, init_~r422~0#1, init_~tmp___9~0#1, init_~r432~0#1, init_~tmp___10~0#1, init_~r123~0#1, init_~tmp___11~0#1, init_~r133~0#1, init_~tmp___12~0#1, init_~r143~0#1, init_~tmp___13~0#1, init_~r213~0#1, init_~tmp___14~0#1, init_~r233~0#1, init_~tmp___15~0#1, init_~r243~0#1, init_~tmp___16~0#1, init_~r313~0#1, init_~tmp___17~0#1, init_~r323~0#1, init_~tmp___18~0#1, init_~r343~0#1, init_~tmp___19~0#1, init_~r413~0#1, init_~tmp___20~0#1, init_~r423~0#1, init_~tmp___21~0#1, init_~r433~0#1, init_~tmp___22~0#1, init_~tmp___23~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r141~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r241~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r341~0#1;havoc init_~r411~0#1;havoc init_~r421~0#1;havoc init_~r431~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r142~0#1;havoc init_~tmp___1~0#1;havoc init_~r212~0#1;havoc init_~tmp___2~0#1;havoc init_~r232~0#1;havoc init_~tmp___3~0#1;havoc init_~r242~0#1;havoc init_~tmp___4~0#1;havoc init_~r312~0#1;havoc init_~tmp___5~0#1;havoc init_~r322~0#1;havoc init_~tmp___6~0#1;havoc init_~r342~0#1;havoc init_~tmp___7~0#1;havoc init_~r412~0#1;havoc init_~tmp___8~0#1;havoc init_~r422~0#1;havoc init_~tmp___9~0#1;havoc init_~r432~0#1;havoc init_~tmp___10~0#1;havoc init_~r123~0#1;havoc init_~tmp___11~0#1;havoc init_~r133~0#1;havoc init_~tmp___12~0#1;havoc init_~r143~0#1;havoc init_~tmp___13~0#1;havoc init_~r213~0#1;havoc init_~tmp___14~0#1;havoc init_~r233~0#1;havoc init_~tmp___15~0#1;havoc init_~r243~0#1;havoc init_~tmp___16~0#1;havoc init_~r313~0#1;havoc init_~tmp___17~0#1;havoc init_~r323~0#1;havoc init_~tmp___18~0#1;havoc init_~r343~0#1;havoc init_~tmp___19~0#1;havoc init_~r413~0#1;havoc init_~tmp___20~0#1;havoc init_~r423~0#1;havoc init_~tmp___21~0#1;havoc init_~r433~0#1;havoc init_~tmp___22~0#1;havoc init_~tmp___23~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r141~0#1 := ~ep14~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r241~0#1 := ~ep24~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0;init_~r341~0#1 := ~ep34~0;init_~r411~0#1 := ~ep41~0;init_~r421~0#1 := ~ep42~0;init_~r431~0#1 := ~ep43~0; 1433#L441 assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 1434#L452 init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 1554#L462 assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 1516#L473 init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 1601#L483 assume 0 != init_~r141~0#1 % 256;init_~tmp___1~0#1 := 1; 1634#L494 init_~r142~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 1664#L504 assume 0 != init_~r211~0#1 % 256;init_~tmp___2~0#1 := 1; 1463#L515 init_~r212~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 1368#L525 assume 0 != init_~r231~0#1 % 256;init_~tmp___3~0#1 := 1; 1369#L536 init_~r232~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 1475#L546 assume 0 != init_~r241~0#1 % 256;init_~tmp___4~0#1 := 1; 1476#L557 init_~r242~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 1497#L567 assume 0 != init_~r311~0#1 % 256;init_~tmp___5~0#1 := 1; 1498#L578 init_~r312~0#1 := (if 0 == init_~tmp___5~0#1 then 0 else 1); 1564#L588 assume 0 != init_~r321~0#1 % 256;init_~tmp___6~0#1 := 1; 1419#L599 init_~r322~0#1 := (if 0 == init_~tmp___6~0#1 then 0 else 1); 1553#L609 assume 0 != init_~r341~0#1 % 256;init_~tmp___7~0#1 := 1; 1481#L620 init_~r342~0#1 := (if 0 == init_~tmp___7~0#1 then 0 else 1); 1514#L630 assume 0 != init_~r411~0#1 % 256;init_~tmp___8~0#1 := 1; 1459#L641 init_~r412~0#1 := (if 0 == init_~tmp___8~0#1 then 0 else 1); 1650#L651 assume 0 != init_~r421~0#1 % 256;init_~tmp___9~0#1 := 1; 1414#L662 init_~r422~0#1 := (if 0 == init_~tmp___9~0#1 then 0 else 1); 1594#L672 assume 0 != init_~r431~0#1 % 256;init_~tmp___10~0#1 := 1; 1595#L683 init_~r432~0#1 := (if 0 == init_~tmp___10~0#1 then 0 else 1); 1665#L693 assume 0 != init_~r122~0#1 % 256;init_~tmp___11~0#1 := 1; 1405#L704 init_~r123~0#1 := (if 0 == init_~tmp___11~0#1 then 0 else 1); 1623#L714 assume 0 != init_~r132~0#1 % 256;init_~tmp___12~0#1 := 1; 1387#L725 init_~r133~0#1 := (if 0 == init_~tmp___12~0#1 then 0 else 1); 1388#L735 assume 0 != init_~r142~0#1 % 256;init_~tmp___13~0#1 := 1; 1363#L746 init_~r143~0#1 := (if 0 == init_~tmp___13~0#1 then 0 else 1); 1541#L756 assume 0 != init_~r212~0#1 % 256;init_~tmp___14~0#1 := 1; 1382#L767 init_~r213~0#1 := (if 0 == init_~tmp___14~0#1 then 0 else 1); 1438#L777 assume 0 != init_~r232~0#1 % 256;init_~tmp___15~0#1 := 1; 1439#L788 init_~r233~0#1 := (if 0 == init_~tmp___15~0#1 then 0 else 1); 1610#L798 assume 0 != init_~r242~0#1 % 256;init_~tmp___16~0#1 := 1; 1585#L809 init_~r243~0#1 := (if 0 == init_~tmp___16~0#1 then 0 else 1); 1653#L819 assume 0 != init_~r312~0#1 % 256;init_~tmp___17~0#1 := 1; 1619#L830 init_~r313~0#1 := (if 0 == init_~tmp___17~0#1 then 0 else 1); 1588#L840 assume 0 != init_~r322~0#1 % 256;init_~tmp___18~0#1 := 1; 1540#L851 init_~r323~0#1 := (if 0 == init_~tmp___18~0#1 then 0 else 1); 1643#L861 assume 0 != init_~r342~0#1 % 256;init_~tmp___19~0#1 := 1; 1487#L872 init_~r343~0#1 := (if 0 == init_~tmp___19~0#1 then 0 else 1); 1648#L882 assume 0 != init_~r412~0#1 % 256;init_~tmp___20~0#1 := 1; 1466#L893 init_~r413~0#1 := (if 0 == init_~tmp___20~0#1 then 0 else 1); 1550#L903 assume 0 != init_~r422~0#1 % 256;init_~tmp___21~0#1 := 1; 1546#L914 init_~r423~0#1 := (if 0 == init_~tmp___21~0#1 then 0 else 1); 1547#L924 assume 0 != init_~r432~0#1 % 256;init_~tmp___22~0#1 := 1; 1530#L935 init_~r433~0#1 := (if 0 == init_~tmp___22~0#1 then 0 else 1); 1531#L945 assume !(~id1~0 != ~id2~0);init_~tmp___23~0#1 := 0; 1375#L945-1 init_#res#1 := init_~tmp___23~0#1; 1548#L1082 main_#t~ret60#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret60#1;havoc main_#t~ret60#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; 1549#L21 assume !(0 == assume_abort_if_not_~cond#1); 1573#L20 assume { :end_inline_assume_abort_if_not } true;~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p14_old~0 := ~nomsg~0;~p14_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p24_old~0 := ~nomsg~0;~p24_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;~p34_old~0 := ~nomsg~0;~p34_new~0 := ~nomsg~0;~p41_old~0 := ~nomsg~0;~p41_new~0 := ~nomsg~0;~p42_old~0 := ~nomsg~0;~p42_new~0 := ~nomsg~0;~p43_old~0 := ~nomsg~0;~p43_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 1635#L1223-2 [2021-12-15 17:23:22,122 INFO L793 eck$LassoCheckResult]: Loop: 1635#L1223-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_#t~ite6#1, node1_~newmax~0#1;havoc node1_~newmax~0#1;node1_~newmax~0#1 := 0; 1760#L114 assume !(0 != ~mode1~0 % 256); 1759#L150 assume ~r1~0 < 3; 1558#L151 assume !(0 != ~ep12~0 % 256); 1461#L151-1 assume !(0 != ~ep13~0 % 256); 1386#L156 assume !(0 != ~ep14~0 % 256); 1502#L150-1 ~mode1~0 := 1; 1743#L114-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite7#1, node2_#t~ite8#1, node2_#t~ite9#1, node2_~newmax~1#1;havoc node2_~newmax~1#1;node2_~newmax~1#1 := 0; 1742#L178 assume !(0 != ~mode2~0 % 256); 1720#L214 assume !(~r2~0 < 3); 1719#L214-1 ~mode2~0 := 1; 1717#L178-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite10#1, node3_#t~ite11#1, node3_#t~ite12#1, node3_~newmax~2#1;havoc node3_~newmax~2#1;node3_~newmax~2#1 := 0; 1715#L242 assume !(0 != ~mode3~0 % 256); 1711#L278 assume !(~r3~0 < 3); 1706#L278-1 ~mode3~0 := 1; 1705#L242-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite13#1, node4_#t~ite14#1, node4_#t~ite15#1, node4_~newmax~3#1;havoc node4_~newmax~3#1;node4_~newmax~3#1 := 0; 1698#L306 assume !(0 != ~mode4~0 % 256); 1689#L342 assume !(~r4~0 < 3); 1684#L342-1 ~mode4~0 := 1; 1682#L306-2 assume { :end_inline_node4 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p14_old~0 := ~p14_new~0;~p14_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p24_old~0 := ~p24_new~0;~p24_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;~p34_old~0 := ~p34_new~0;~p34_new~0 := ~nomsg~0;~p41_old~0 := ~p41_new~0;~p41_new~0 := ~nomsg~0;~p42_old~0 := ~p42_new~0;~p42_new~0 := ~nomsg~0;~p43_old~0 := ~p43_new~0;~p43_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 1681#L1090 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 1680#L1091 assume ~st1~0 + ~nl1~0 <= 1; 1679#L1092 assume ~st2~0 + ~nl2~0 <= 1; 1678#L1093 assume ~st3~0 + ~nl3~0 <= 1; 1677#L1094 assume ~st4~0 + ~nl4~0 <= 1; 1676#L1095 assume !(~r1~0 >= 3); 1544#L1098 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0; 1545#L1099 assume ~r1~0 < 3; 1675#L1104 assume !(~r1~0 >= 3); 1436#L1108 assume 0 == ~nl1~0 + ~nl2~0 + ~nl3~0 + ~nl4~0; 1437#L1109 assume ~r1~0 < 3;check_~tmp~1#1 := 1; 1764#L1090-1 check_#res#1 := check_~tmp~1#1; 1763#L1142 main_#t~ret61#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret61#1;havoc main_#t~ret61#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; 1762#L1266 assume !(0 == assert_~arg#1 % 256); 1761#L1261 assume { :end_inline_assert } true;main_#t~post62#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post62#1;havoc main_#t~post62#1; 1635#L1223-2 [2021-12-15 17:23:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1995424982, now seen corresponding path program 3 times [2021-12-15 17:23:22,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:22,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575393764] [2021-12-15 17:23:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:22,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:22,198 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 17:23:22,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:22,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575393764] [2021-12-15 17:23:22,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575393764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:22,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:22,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:23:22,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21029970] [2021-12-15 17:23:22,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:22,200 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:23:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2081002357, now seen corresponding path program 1 times [2021-12-15 17:23:22,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:22,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267319430] [2021-12-15 17:23:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:22,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:23:22,208 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:23:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:23:22,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:23:23,246 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:818) 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 17:23:23,249 INFO L158 Benchmark]: Toolchain (without parser) took 3408.64ms. Allocated memory was 92.3MB in the beginning and 138.4MB in the end (delta: 46.1MB). Free memory was 57.9MB in the beginning and 94.9MB in the end (delta: -37.0MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2021-12-15 17:23:23,250 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory was 63.2MB in the beginning and 63.2MB in the end (delta: 23.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:23:23,250 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.85ms. Allocated memory is still 92.3MB. Free memory was 57.7MB in the beginning and 57.6MB in the end (delta: 60.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 17:23:23,250 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.43ms. Allocated memory is still 92.3MB. Free memory was 57.6MB in the beginning and 53.0MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 17:23:23,251 INFO L158 Benchmark]: Boogie Preprocessor took 61.73ms. Allocated memory is still 92.3MB. Free memory was 53.0MB in the beginning and 49.2MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 17:23:23,251 INFO L158 Benchmark]: RCFGBuilder took 879.61ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 48.8MB in the beginning and 53.6MB in the end (delta: -4.8MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2021-12-15 17:23:23,252 INFO L158 Benchmark]: BuchiAutomizer took 2052.36ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 53.6MB in the beginning and 94.9MB in the end (delta: -41.3MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2021-12-15 17:23:23,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 92.3MB. Free memory was 63.2MB in the beginning and 63.2MB in the end (delta: 23.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 353.85ms. Allocated memory is still 92.3MB. Free memory was 57.7MB in the beginning and 57.6MB in the end (delta: 60.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.43ms. Allocated memory is still 92.3MB. Free memory was 57.6MB in the beginning and 53.0MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.73ms. Allocated memory is still 92.3MB. Free memory was 53.0MB in the beginning and 49.2MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 879.61ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 48.8MB in the beginning and 53.6MB in the end (delta: -4.8MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2052.36ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 53.6MB in the beginning and 94.9MB in the end (delta: -41.3MB). Peak memory consumption was 24.4MB. 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 17:23:23,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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