./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 588484d75150429774731f7aacf4daf77752c68fdc38fffa31465a5f910e2823 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:23:15,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:23:15,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:23:15,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:23:15,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:23:15,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:23:15,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:23:15,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:23:15,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:23:15,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:23:15,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:23:15,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:23:15,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:23:15,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:23:15,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:23:15,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:23:15,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:23:15,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:23:15,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:23:15,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:23:15,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:23:15,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:23:15,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:23:15,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:23:15,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:23:15,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:23:15,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:23:15,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:23:15,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:23:15,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:23:15,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:23:15,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:23:15,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:23:15,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:23:15,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:23:15,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:23:15,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:23:15,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:23:15,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:23:15,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:23:15,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:23:15,119 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:23:15,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:23:15,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:23:15,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:23:15,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:23:15,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:23:15,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:23:15,139 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:23:15,139 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:23:15,139 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:23:15,139 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:23:15,140 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:23:15,140 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:23:15,140 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:23:15,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:23:15,140 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:23:15,140 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:23:15,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:23:15,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:23:15,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:23:15,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:23:15,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:23:15,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:23:15,141 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:23:15,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:23:15,142 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:23:15,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:23:15,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:23:15,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:23:15,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:23:15,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:23:15,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:23:15,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:23:15,144 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:23:15,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588484d75150429774731f7aacf4daf77752c68fdc38fffa31465a5f910e2823 [2021-12-15 17:23:15,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:23:15,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:23:15,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:23:15,352 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:23:15,352 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:23:15,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-12-15 17:23:15,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692adee02/755790a75647470eab05a1b0046d36da/FLAG672368436 [2021-12-15 17:23:15,766 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:23:15,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-12-15 17:23:15,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692adee02/755790a75647470eab05a1b0046d36da/FLAG672368436 [2021-12-15 17:23:16,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692adee02/755790a75647470eab05a1b0046d36da [2021-12-15 17:23:16,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:23:16,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:23:16,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:23:16,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:23:16,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:23:16,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fcf3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16, skipping insertion in model container [2021-12-15 17:23:16,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:23:16,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:23:16,554 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.3.3.ufo.UNBOUNDED.pals.c[14511,14524] [2021-12-15 17:23:16,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:23:16,560 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:23:16,629 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.3.3.ufo.UNBOUNDED.pals.c[14511,14524] [2021-12-15 17:23:16,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:23:16,640 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:23:16,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16 WrapperNode [2021-12-15 17:23:16,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:23:16,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:23:16,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:23:16,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:23:16,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,688 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 462 [2021-12-15 17:23:16,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:23:16,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:23:16,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:23:16,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:23:16,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:23:16,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:23:16,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:23:16,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:23:16,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (1/1) ... [2021-12-15 17:23:16,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:23:16,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:23:16,776 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 17:23:16,799 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 17:23:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:23:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:23:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:23:16,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:23:16,886 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:23:16,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:23:17,295 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:23:17,304 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:23:17,305 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 17:23:17,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:23:17 BoogieIcfgContainer [2021-12-15 17:23:17,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:23:17,308 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:23:17,308 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:23:17,311 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:23:17,312 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:23:17,312 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:23:16" (1/3) ... [2021-12-15 17:23:17,313 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@190a59bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:23:17, skipping insertion in model container [2021-12-15 17:23:17,313 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:23:17,313 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:23:16" (2/3) ... [2021-12-15 17:23:17,313 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@190a59bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:23:17, skipping insertion in model container [2021-12-15 17:23:17,314 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:23:17,314 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:23:17" (3/3) ... [2021-12-15 17:23:17,315 INFO L388 chiAutomizerObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-12-15 17:23:17,348 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:23:17,349 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:23:17,349 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:23:17,349 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:23:17,349 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:23:17,349 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:23:17,349 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:23:17,349 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:23:17,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 148 states, 147 states have (on average 1.7414965986394557) internal successors, (256), 147 states have internal predecessors, (256), 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 17:23:17,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 84 [2021-12-15 17:23:17,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:23:17,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:23:17,385 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] [2021-12-15 17:23:17,385 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:23:17,385 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:23:17,386 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 148 states, 147 states have (on average 1.7414965986394557) internal successors, (256), 147 states have internal predecessors, (256), 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 17:23:17,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 84 [2021-12-15 17:23:17,392 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:23:17,392 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:23:17,393 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] [2021-12-15 17:23:17,393 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:23:17,398 INFO L791 eck$LassoCheckResult]: Stem: 137#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;~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;~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;~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; 42#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~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~ret40#1, main_#t~ret41#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~nondet10#1;havoc main_#t~nondet10#1;~ep13~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~ep21~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~ep23~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~ep31~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~ep32~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~id1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~r1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~nl1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~m1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~max1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode1~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~newmax1~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~id2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~r2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~st2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~nl2~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~m2~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~max2~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode2~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~newmax2~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id3~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~r3~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~st3~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~nl3~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~m3~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~max3~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~mode3~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~newmax3~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r211~0#1, init_~r231~0#1, init_~r311~0#1, init_~r321~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r212~0#1, init_~tmp___1~0#1, init_~r232~0#1, init_~tmp___2~0#1, init_~r312~0#1, init_~tmp___3~0#1, init_~r322~0#1, init_~tmp___4~0#1, init_~tmp___5~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r212~0#1;havoc init_~tmp___1~0#1;havoc init_~r232~0#1;havoc init_~tmp___2~0#1;havoc init_~r312~0#1;havoc init_~tmp___3~0#1;havoc init_~r322~0#1;havoc init_~tmp___4~0#1;havoc init_~tmp___5~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0; 23#L268true assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 24#L271-1true init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 16#L281true assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 48#L284-1true init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 123#L294true assume 0 != init_~r211~0#1 % 256;init_~tmp___1~0#1 := 1; 34#L297-1true init_~r212~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 87#L307true assume 0 != init_~r231~0#1 % 256;init_~tmp___2~0#1 := 1; 88#L310-1true init_~r232~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 95#L320true assume 0 != init_~r311~0#1 % 256;init_~tmp___3~0#1 := 1; 100#L323-1true init_~r312~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 66#L333true assume 0 != init_~r321~0#1 % 256;init_~tmp___4~0#1 := 1; 8#L336-1true init_~r322~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 47#L346true assume !(~id1~0 != ~id2~0);init_~tmp___5~0#1 := 0; 25#L346-1true init_#res#1 := init_~tmp___5~0#1; 146#L467true main_#t~ret40#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret40#1;havoc main_#t~ret40#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; 43#L22true assume !(0 == assume_abort_if_not_~cond#1); 108#L21true 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;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 138#L578-2true [2021-12-15 17:23:17,399 INFO L793 eck$LassoCheckResult]: Loop: 138#L578-2true assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~newmax~0#1;havoc node1_~newmax~0#1;node1_~newmax~0#1 := 0; 27#L83true assume !(0 != ~mode1~0 % 256); 52#L114true assume !(~r1~0 % 256 < 2); 102#L114-1true ~mode1~0 := 1; 125#L83-2true assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~newmax~1#1;havoc node2_~newmax~1#1;node2_~newmax~1#1 := 0; 64#L137true assume !(0 != ~mode2~0 % 256); 7#L168true assume !(~r2~0 % 256 < 2); 141#L168-1true ~mode2~0 := 1; 129#L137-2true assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~newmax~2#1;havoc node3_~newmax~2#1;node3_~newmax~2#1 := 0; 92#L191true assume !(0 != ~mode3~0 % 256); 96#L222true assume !(~r3~0 % 256 < 2); 70#L222-1true ~mode3~0 := 1; 78#L191-2true assume { :end_inline_node3 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_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;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 79#L475true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1#1 := 0; 130#L475-1true check_#res#1 := check_~tmp~1#1; 90#L523true main_#t~ret41#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret41#1;havoc main_#t~ret41#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; 37#L607true assume !(0 == assert_~arg#1 % 256); 12#L602true assume { :end_inline_assert } true; 138#L578-2true [2021-12-15 17:23:17,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:17,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1744745224, now seen corresponding path program 1 times [2021-12-15 17:23:17,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:17,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306589517] [2021-12-15 17:23:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:17,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:17,553 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 17:23:17,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306589517] [2021-12-15 17:23:17,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306589517] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:17,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:17,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:23:17,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274394375] [2021-12-15 17:23:17,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:17,561 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:23:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:17,563 INFO L85 PathProgramCache]: Analyzing trace with hash 944900103, now seen corresponding path program 1 times [2021-12-15 17:23:17,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:17,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983166967] [2021-12-15 17:23:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:17,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:17,652 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 17:23:17,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:17,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983166967] [2021-12-15 17:23:17,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983166967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:17,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:17,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:23:17,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13984065] [2021-12-15 17:23:17,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:17,655 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:23:17,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:23:17,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:23:17,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:23:17,681 INFO L87 Difference]: Start difference. First operand has 148 states, 147 states have (on average 1.7414965986394557) internal successors, (256), 147 states have internal predecessors, (256), 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 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:23:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:23:17,762 INFO L93 Difference]: Finished difference Result 148 states and 252 transitions. [2021-12-15 17:23:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:23:17,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 252 transitions. [2021-12-15 17:23:17,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2021-12-15 17:23:17,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 143 states and 240 transitions. [2021-12-15 17:23:17,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 143 [2021-12-15 17:23:17,776 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 143 [2021-12-15 17:23:17,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 240 transitions. [2021-12-15 17:23:17,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:23:17,803 INFO L681 BuchiCegarLoop]: Abstraction has 143 states and 240 transitions. [2021-12-15 17:23:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states and 240 transitions. [2021-12-15 17:23:17,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-15 17:23:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 143 states have (on average 1.6783216783216783) internal successors, (240), 142 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:23:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 240 transitions. [2021-12-15 17:23:17,856 INFO L704 BuchiCegarLoop]: Abstraction has 143 states and 240 transitions. [2021-12-15 17:23:17,856 INFO L587 BuchiCegarLoop]: Abstraction has 143 states and 240 transitions. [2021-12-15 17:23:17,856 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 17:23:17,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 143 states and 240 transitions. [2021-12-15 17:23:17,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2021-12-15 17:23:17,858 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:23:17,859 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:23:17,859 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] [2021-12-15 17:23:17,860 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] [2021-12-15 17:23:17,860 INFO L791 eck$LassoCheckResult]: Stem: 453#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;~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;~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;~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; 385#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~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~ret40#1, main_#t~ret41#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~nondet10#1;havoc main_#t~nondet10#1;~ep13~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~ep21~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~ep23~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~ep31~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~ep32~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~id1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~r1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~nl1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~m1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~max1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode1~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~newmax1~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~id2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~r2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~st2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~nl2~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~m2~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~max2~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode2~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~newmax2~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id3~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~r3~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~st3~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~nl3~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~m3~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~max3~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~mode3~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~newmax3~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r211~0#1, init_~r231~0#1, init_~r311~0#1, init_~r321~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r212~0#1, init_~tmp___1~0#1, init_~r232~0#1, init_~tmp___2~0#1, init_~r312~0#1, init_~tmp___3~0#1, init_~r322~0#1, init_~tmp___4~0#1, init_~tmp___5~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r212~0#1;havoc init_~tmp___1~0#1;havoc init_~r232~0#1;havoc init_~tmp___2~0#1;havoc init_~r312~0#1;havoc init_~tmp___3~0#1;havoc init_~r322~0#1;havoc init_~tmp___4~0#1;havoc init_~tmp___5~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0; 354#L268 assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 355#L271-1 init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 341#L281 assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 342#L284-1 init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 391#L294 assume 0 != init_~r211~0#1 % 256;init_~tmp___1~0#1 := 1; 373#L297-1 init_~r212~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 374#L307 assume 0 != init_~r231~0#1 % 256;init_~tmp___2~0#1 := 1; 393#L310-1 init_~r232~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 435#L320 assume 0 != init_~r311~0#1 % 256;init_~tmp___3~0#1 := 1; 316#L323-1 init_~r312~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 412#L333 assume 0 != init_~r321~0#1 % 256;init_~tmp___4~0#1 := 1; 325#L336-1 init_~r322~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 326#L346 assume !(~id1~0 != ~id2~0);init_~tmp___5~0#1 := 0; 331#L346-1 init_#res#1 := init_~tmp___5~0#1; 357#L467 main_#t~ret40#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret40#1;havoc main_#t~ret40#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; 387#L22 assume !(0 == assume_abort_if_not_~cond#1); 388#L21 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;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 335#L578-2 [2021-12-15 17:23:17,860 INFO L793 eck$LassoCheckResult]: Loop: 335#L578-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~newmax~0#1;havoc node1_~newmax~0#1;node1_~newmax~0#1 := 0; 359#L83 assume !(0 != ~mode1~0 % 256); 360#L114 assume !(~r1~0 % 256 < 2); 368#L114-1 ~mode1~0 := 1; 406#L83-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~newmax~1#1;havoc node2_~newmax~1#1;node2_~newmax~1#1 := 0; 410#L137 assume !(0 != ~mode2~0 % 256); 323#L168 assume !(~r2~0 % 256 < 2); 319#L168-1 ~mode2~0 := 1; 446#L137-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~newmax~2#1;havoc node3_~newmax~2#1;node3_~newmax~2#1 := 0; 437#L191 assume !(0 != ~mode3~0 % 256); 438#L222 assume !(~r3~0 % 256 < 2); 321#L222-1 ~mode3~0 := 1; 416#L191-2 assume { :end_inline_node3 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_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;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 426#L475 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 386#L476 assume ~st1~0 + ~nl1~0 <= 1; 369#L477 assume ~st2~0 + ~nl2~0 <= 1; 370#L478 assume ~st3~0 + ~nl3~0 <= 1; 422#L479 assume ~r1~0 % 256 >= 2; 408#L483 assume ~r1~0 % 256 < 2; 348#L488 assume ~r1~0 % 256 >= 2; 344#L493 assume ~r1~0 % 256 < 2;check_~tmp~1#1 := 1; 345#L475-1 check_#res#1 := check_~tmp~1#1; 436#L523 main_#t~ret41#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret41#1;havoc main_#t~ret41#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; 375#L607 assume !(0 == assert_~arg#1 % 256); 334#L602 assume { :end_inline_assert } true; 335#L578-2 [2021-12-15 17:23:17,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:17,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1744745224, now seen corresponding path program 2 times [2021-12-15 17:23:17,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:17,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870234013] [2021-12-15 17:23:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:17,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:17,945 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 17:23:17,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:17,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870234013] [2021-12-15 17:23:17,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870234013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:17,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:17,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:23:17,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193705369] [2021-12-15 17:23:17,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:17,947 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:23:17,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash -24321606, now seen corresponding path program 1 times [2021-12-15 17:23:17,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:17,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882129739] [2021-12-15 17:23:17,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:17,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:17,976 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 17:23:17,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:17,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882129739] [2021-12-15 17:23:17,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882129739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:17,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:17,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:23:17,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069243287] [2021-12-15 17:23:17,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:17,977 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:23:17,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:23:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:23:17,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:23:17,978 INFO L87 Difference]: Start difference. First operand 143 states and 240 transitions. cyclomatic complexity: 98 Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 17:23:18,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:23:18,026 INFO L93 Difference]: Finished difference Result 146 states and 242 transitions. [2021-12-15 17:23:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:23:18,027 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 146 states and 242 transitions. [2021-12-15 17:23:18,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2021-12-15 17:23:18,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 146 states to 143 states and 210 transitions. [2021-12-15 17:23:18,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 143 [2021-12-15 17:23:18,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 143 [2021-12-15 17:23:18,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 210 transitions. [2021-12-15 17:23:18,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:23:18,032 INFO L681 BuchiCegarLoop]: Abstraction has 143 states and 210 transitions. [2021-12-15 17:23:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states and 210 transitions. [2021-12-15 17:23:18,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-15 17:23:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 143 states have (on average 1.4685314685314685) internal successors, (210), 142 states have internal predecessors, (210), 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 17:23:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 210 transitions. [2021-12-15 17:23:18,037 INFO L704 BuchiCegarLoop]: Abstraction has 143 states and 210 transitions. [2021-12-15 17:23:18,037 INFO L587 BuchiCegarLoop]: Abstraction has 143 states and 210 transitions. [2021-12-15 17:23:18,037 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-15 17:23:18,037 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 143 states and 210 transitions. [2021-12-15 17:23:18,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2021-12-15 17:23:18,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:23:18,038 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:23:18,040 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] [2021-12-15 17:23:18,040 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] [2021-12-15 17:23:18,040 INFO L791 eck$LassoCheckResult]: Stem: 755#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;~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;~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;~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; 687#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~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~ret40#1, main_#t~ret41#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~nondet10#1;havoc main_#t~nondet10#1;~ep13~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~ep21~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~ep23~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~ep31~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~ep32~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~id1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~r1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~nl1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~m1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~max1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode1~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~newmax1~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~id2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~r2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~st2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~nl2~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~m2~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~max2~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode2~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~newmax2~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id3~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~r3~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~st3~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~nl3~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~m3~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~max3~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~mode3~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~newmax3~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r211~0#1, init_~r231~0#1, init_~r311~0#1, init_~r321~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r212~0#1, init_~tmp___1~0#1, init_~r232~0#1, init_~tmp___2~0#1, init_~r312~0#1, init_~tmp___3~0#1, init_~r322~0#1, init_~tmp___4~0#1, init_~tmp___5~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r212~0#1;havoc init_~tmp___1~0#1;havoc init_~r232~0#1;havoc init_~tmp___2~0#1;havoc init_~r312~0#1;havoc init_~tmp___3~0#1;havoc init_~r322~0#1;havoc init_~tmp___4~0#1;havoc init_~tmp___5~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0; 656#L268 assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 657#L271-1 init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 643#L281 assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 644#L284-1 init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 693#L294 assume 0 != init_~r211~0#1 % 256;init_~tmp___1~0#1 := 1; 675#L297-1 init_~r212~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 676#L307 assume 0 != init_~r231~0#1 % 256;init_~tmp___2~0#1 := 1; 696#L310-1 init_~r232~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 737#L320 assume 0 != init_~r311~0#1 % 256;init_~tmp___3~0#1 := 1; 621#L323-1 init_~r312~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 714#L333 assume 0 != init_~r321~0#1 % 256;init_~tmp___4~0#1 := 1; 629#L336-1 init_~r322~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 630#L346 assume ~id1~0 != ~id2~0; 692#L347 assume ~id1~0 != ~id3~0; 752#L348 assume ~id2~0 != ~id3~0; 743#L349 assume ~id1~0 >= 0; 744#L350 assume ~id2~0 >= 0; 726#L351 assume ~id3~0 >= 0; 727#L352 assume 0 == ~r1~0 % 256; 747#L353 assume 0 == ~r2~0 % 256; 704#L354 assume 0 == ~r3~0 % 256; 682#L355 assume 0 != init_~r122~0#1 % 256; 683#L356 assume 0 != init_~r132~0#1 % 256; 703#L357 assume 0 != init_~r212~0#1 % 256; 637#L358 assume 0 != init_~r232~0#1 % 256; 638#L359 assume 0 != init_~r312~0#1 % 256; 651#L360 assume 0 != init_~r322~0#1 % 256; 652#L361 assume ~max1~0 == ~id1~0; 730#L362 assume ~max2~0 == ~id2~0; 757#L363 assume ~max3~0 == ~id3~0; 758#L364 assume 0 == ~st1~0; 699#L365 assume 0 == ~st2~0; 700#L366 assume 0 == ~st3~0; 641#L367 assume 0 == ~nl1~0; 642#L368 assume 0 == ~nl2~0; 684#L369 assume 0 == ~nl3~0; 631#L370 assume 0 == ~mode1~0 % 256; 632#L371 assume 0 == ~mode2~0 % 256; 680#L372 assume 0 == ~mode3~0 % 256; 681#L373 assume 0 != ~newmax1~0 % 256; 753#L374 assume 0 != ~newmax2~0 % 256; 639#L375 assume 0 != ~newmax3~0 % 256;init_~tmp___5~0#1 := 1; 640#L346-1 init_#res#1 := init_~tmp___5~0#1; 659#L467 main_#t~ret40#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret40#1;havoc main_#t~ret40#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; 688#L22 assume !(0 == assume_abort_if_not_~cond#1); 689#L21 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;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 636#L578-2 [2021-12-15 17:23:18,040 INFO L793 eck$LassoCheckResult]: Loop: 636#L578-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~newmax~0#1;havoc node1_~newmax~0#1;node1_~newmax~0#1 := 0; 661#L83 assume !(0 != ~mode1~0 % 256); 662#L114 assume !(~r1~0 % 256 < 2); 670#L114-1 ~mode1~0 := 1; 708#L83-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~newmax~1#1;havoc node2_~newmax~1#1;node2_~newmax~1#1 := 0; 711#L137 assume !(0 != ~mode2~0 % 256); 625#L168 assume !(~r2~0 % 256 < 2); 618#L168-1 ~mode2~0 := 1; 748#L137-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~newmax~2#1;havoc node3_~newmax~2#1;node3_~newmax~2#1 := 0; 739#L191 assume !(0 != ~mode3~0 % 256); 740#L222 assume !(~r3~0 % 256 < 2); 623#L222-1 ~mode3~0 := 1; 718#L191-2 assume { :end_inline_node3 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_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;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 728#L475 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 690#L476 assume ~st1~0 + ~nl1~0 <= 1; 671#L477 assume ~st2~0 + ~nl2~0 <= 1; 672#L478 assume ~st3~0 + ~nl3~0 <= 1; 725#L479 assume ~r1~0 % 256 >= 2; 710#L483 assume ~r1~0 % 256 < 2; 650#L488 assume ~r1~0 % 256 >= 2; 646#L493 assume ~r1~0 % 256 < 2;check_~tmp~1#1 := 1; 647#L475-1 check_#res#1 := check_~tmp~1#1; 738#L523 main_#t~ret41#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret41#1;havoc main_#t~ret41#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; 677#L607 assume !(0 == assert_~arg#1 % 256); 635#L602 assume { :end_inline_assert } true; 636#L578-2 [2021-12-15 17:23:18,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:18,041 INFO L85 PathProgramCache]: Analyzing trace with hash 431062094, now seen corresponding path program 1 times [2021-12-15 17:23:18,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:18,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716613223] [2021-12-15 17:23:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:18,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:23:18,072 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:23:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:23:18,122 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:23:18,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash -24321606, now seen corresponding path program 2 times [2021-12-15 17:23:18,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:18,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695598790] [2021-12-15 17:23:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:18,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:18,170 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 17:23:18,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:18,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695598790] [2021-12-15 17:23:18,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695598790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:18,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:18,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:23:18,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278547945] [2021-12-15 17:23:18,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:18,172 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:23:18,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:23:18,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 17:23:18,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 17:23:18,172 INFO L87 Difference]: Start difference. First operand 143 states and 210 transitions. cyclomatic complexity: 68 Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 17:23:18,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:23:18,216 INFO L93 Difference]: Finished difference Result 207 states and 306 transitions. [2021-12-15 17:23:18,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 17:23:18,217 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 207 states and 306 transitions. [2021-12-15 17:23:18,219 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 147 [2021-12-15 17:23:18,222 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 207 states to 207 states and 306 transitions. [2021-12-15 17:23:18,223 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 207 [2021-12-15 17:23:18,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 207 [2021-12-15 17:23:18,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 306 transitions. [2021-12-15 17:23:18,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:23:18,227 INFO L681 BuchiCegarLoop]: Abstraction has 207 states and 306 transitions. [2021-12-15 17:23:18,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 306 transitions. [2021-12-15 17:23:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2021-12-15 17:23:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 205 states have (on average 1.4780487804878049) internal successors, (303), 204 states have internal predecessors, (303), 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 17:23:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 303 transitions. [2021-12-15 17:23:18,239 INFO L704 BuchiCegarLoop]: Abstraction has 205 states and 303 transitions. [2021-12-15 17:23:18,239 INFO L587 BuchiCegarLoop]: Abstraction has 205 states and 303 transitions. [2021-12-15 17:23:18,239 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-15 17:23:18,239 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 205 states and 303 transitions. [2021-12-15 17:23:18,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 145 [2021-12-15 17:23:18,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:23:18,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:23:18,242 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] [2021-12-15 17:23:18,242 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] [2021-12-15 17:23:18,242 INFO L791 eck$LassoCheckResult]: Stem: 1116#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;~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;~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;~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; 1042#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~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~ret40#1, main_#t~ret41#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~nondet10#1;havoc main_#t~nondet10#1;~ep13~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~ep21~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~ep23~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~ep31~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~ep32~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~id1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~r1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~nl1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~m1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~max1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode1~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~newmax1~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~id2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~r2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~st2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~nl2~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~m2~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~max2~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode2~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~newmax2~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id3~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~r3~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~st3~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~nl3~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~m3~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~max3~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~mode3~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~newmax3~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r211~0#1, init_~r231~0#1, init_~r311~0#1, init_~r321~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r212~0#1, init_~tmp___1~0#1, init_~r232~0#1, init_~tmp___2~0#1, init_~r312~0#1, init_~tmp___3~0#1, init_~r322~0#1, init_~tmp___4~0#1, init_~tmp___5~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r212~0#1;havoc init_~tmp___1~0#1;havoc init_~r232~0#1;havoc init_~tmp___2~0#1;havoc init_~r312~0#1;havoc init_~tmp___3~0#1;havoc init_~r322~0#1;havoc init_~tmp___4~0#1;havoc init_~tmp___5~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0; 1011#L268 assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 1012#L271-1 init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 999#L281 assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 1000#L284-1 init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 1048#L294 assume 0 != init_~r211~0#1 % 256;init_~tmp___1~0#1 := 1; 1030#L297-1 init_~r212~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 1031#L307 assume 0 != init_~r231~0#1 % 256;init_~tmp___2~0#1 := 1; 1050#L310-1 init_~r232~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 1093#L320 assume 0 != init_~r311~0#1 % 256;init_~tmp___3~0#1 := 1; 974#L323-1 init_~r312~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 1070#L333 assume 0 != init_~r321~0#1 % 256;init_~tmp___4~0#1 := 1; 983#L336-1 init_~r322~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 984#L346 assume ~id1~0 != ~id2~0; 1047#L347 assume ~id1~0 != ~id3~0; 1109#L348 assume ~id2~0 != ~id3~0; 1099#L349 assume ~id1~0 >= 0; 1100#L350 assume ~id2~0 >= 0; 1082#L351 assume ~id3~0 >= 0; 1083#L352 assume 0 == ~r1~0 % 256; 1103#L353 assume 0 == ~r2~0 % 256; 1059#L354 assume 0 == ~r3~0 % 256; 1037#L355 assume 0 != init_~r122~0#1 % 256; 1038#L356 assume 0 != init_~r132~0#1 % 256; 1058#L357 assume 0 != init_~r212~0#1 % 256; 993#L358 assume 0 != init_~r232~0#1 % 256; 994#L359 assume 0 != init_~r312~0#1 % 256; 1006#L360 assume 0 != init_~r322~0#1 % 256; 1007#L361 assume ~max1~0 == ~id1~0; 1086#L362 assume ~max2~0 == ~id2~0; 1118#L363 assume ~max3~0 == ~id3~0; 1119#L364 assume 0 == ~st1~0; 1054#L365 assume 0 == ~st2~0; 1055#L366 assume 0 == ~st3~0; 997#L367 assume 0 == ~nl1~0; 998#L368 assume 0 == ~nl2~0; 1039#L369 assume 0 == ~nl3~0; 987#L370 assume 0 == ~mode1~0 % 256; 988#L371 assume 0 == ~mode2~0 % 256; 1035#L372 assume 0 == ~mode3~0 % 256; 1036#L373 assume 0 != ~newmax1~0 % 256; 1113#L374 assume 0 != ~newmax2~0 % 256; 995#L375 assume 0 != ~newmax3~0 % 256;init_~tmp___5~0#1 := 1; 996#L346-1 init_#res#1 := init_~tmp___5~0#1; 1014#L467 main_#t~ret40#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret40#1;havoc main_#t~ret40#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; 1043#L22 assume !(0 == assume_abort_if_not_~cond#1); 1044#L21 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;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 1104#L578-2 [2021-12-15 17:23:18,243 INFO L793 eck$LassoCheckResult]: Loop: 1104#L578-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~newmax~0#1;havoc node1_~newmax~0#1;node1_~newmax~0#1 := 0; 1123#L83 assume !(0 != ~mode1~0 % 256); 1122#L114 assume ~r1~0 % 256 < 2; 1060#L115 assume !(0 != ~ep12~0 % 256); 1015#L115-1 assume !(0 != ~ep13~0 % 256); 1025#L114-1 ~mode1~0 := 1; 1064#L83-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~newmax~1#1;havoc node2_~newmax~1#1;node2_~newmax~1#1 := 0; 1068#L137 assume !(0 != ~mode2~0 % 256); 981#L168 assume !(~r2~0 % 256 < 2); 977#L168-1 ~mode2~0 := 1; 1105#L137-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~newmax~2#1;havoc node3_~newmax~2#1;node3_~newmax~2#1 := 0; 1095#L191 assume !(0 != ~mode3~0 % 256); 1096#L222 assume !(~r3~0 % 256 < 2); 979#L222-1 ~mode3~0 := 1; 1074#L191-2 assume { :end_inline_node3 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_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;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 1084#L475 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 1045#L476 assume ~st1~0 + ~nl1~0 <= 1; 1026#L477 assume ~st2~0 + ~nl2~0 <= 1; 1027#L478 assume ~st3~0 + ~nl3~0 <= 1; 1120#L479 assume !(~r1~0 % 256 >= 2); 1065#L482 assume 0 == ~st1~0 + ~st2~0 + ~st3~0; 1066#L483 assume ~r1~0 % 256 < 2; 1121#L488 assume !(~r1~0 % 256 >= 2); 1111#L492 assume 0 == ~nl1~0 + ~nl2~0 + ~nl3~0; 1112#L493 assume ~r1~0 % 256 < 2;check_~tmp~1#1 := 1; 1127#L475-1 check_#res#1 := check_~tmp~1#1; 1126#L523 main_#t~ret41#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret41#1;havoc main_#t~ret41#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; 1125#L607 assume !(0 == assert_~arg#1 % 256); 1124#L602 assume { :end_inline_assert } true; 1104#L578-2 [2021-12-15 17:23:18,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:18,243 INFO L85 PathProgramCache]: Analyzing trace with hash 431062094, now seen corresponding path program 2 times [2021-12-15 17:23:18,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:18,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539928109] [2021-12-15 17:23:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:18,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:23:18,272 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:23:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:23:18,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:23:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:18,314 INFO L85 PathProgramCache]: Analyzing trace with hash -338566491, now seen corresponding path program 1 times [2021-12-15 17:23:18,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:18,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469068767] [2021-12-15 17:23:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:18,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:23:18,321 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:23:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:23:18,329 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:23:18,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:23:18,330 INFO L85 PathProgramCache]: Analyzing trace with hash -221149832, now seen corresponding path program 1 times [2021-12-15 17:23:18,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:23:18,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281167693] [2021-12-15 17:23:18,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:23:18,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:23:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:23:18,371 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 17:23:18,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:23:18,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281167693] [2021-12-15 17:23:18,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281167693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:23:18,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:23:18,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:23:18,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930662899] [2021-12-15 17:23:18,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:23:18,898 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:548) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLoopTermination(LassoCheck.java:944) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:834) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 17:23:18,900 INFO L158 Benchmark]: Toolchain (without parser) took 2697.12ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 111.0MB in the beginning and 146.6MB in the end (delta: -35.6MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2021-12-15 17:23:18,901 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 83.9MB. Free memory was 41.9MB in the beginning and 41.9MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:23:18,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.35ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 110.8MB in the end (delta: 158.6kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 17:23:18,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.54ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 107.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:23:18,902 INFO L158 Benchmark]: Boogie Preprocessor took 43.21ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 105.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:23:18,903 INFO L158 Benchmark]: RCFGBuilder took 574.92ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 80.3MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 17:23:18,903 INFO L158 Benchmark]: BuchiAutomizer took 1591.14ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 80.0MB in the beginning and 146.6MB in the end (delta: -66.6MB). Peak memory consumption was 53.8MB. Max. memory is 16.1GB. [2021-12-15 17:23:18,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 83.9MB. Free memory was 41.9MB in the beginning and 41.9MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.35ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 110.8MB in the end (delta: 158.6kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.54ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 107.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.21ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 105.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 574.92ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 80.3MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 1591.14ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 80.0MB in the beginning and 146.6MB in the end (delta: -66.6MB). Peak memory consumption was 53.8MB. 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 17:23:18,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable