./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/systemc/bist_cell.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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/systemc/bist_cell.cil.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 de455e90ef2ae1a82fb7a87bbcdb07831c7ef68e47976e1b2868a3e9de47a0a2 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 19:15:17,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 19:15:17,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 19:15:17,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 19:15:17,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 19:15:17,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 19:15:17,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 19:15:17,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 19:15:17,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 19:15:17,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 19:15:17,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 19:15:17,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 19:15:17,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 19:15:17,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 19:15:17,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 19:15:17,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 19:15:17,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 19:15:17,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 19:15:17,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 19:15:17,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 19:15:17,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 19:15:17,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 19:15:17,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 19:15:17,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 19:15:17,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 19:15:17,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 19:15:17,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 19:15:17,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 19:15:17,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 19:15:17,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 19:15:17,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 19:15:17,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 19:15:17,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 19:15:17,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 19:15:17,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 19:15:17,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 19:15:17,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 19:15:17,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 19:15:17,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 19:15:17,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 19:15:17,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 19:15:17,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 19:15:17,628 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 19:15:17,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 19:15:17,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 19:15:17,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 19:15:17,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 19:15:17,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 19:15:17,630 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 19:15:17,630 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 19:15:17,630 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 19:15:17,630 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 19:15:17,630 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 19:15:17,631 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 19:15:17,631 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 19:15:17,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 19:15:17,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 19:15:17,631 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 19:15:17,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 19:15:17,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 19:15:17,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 19:15:17,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 19:15:17,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 19:15:17,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 19:15:17,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 19:15:17,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 19:15:17,633 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 19:15:17,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 19:15:17,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 19:15:17,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 19:15:17,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 19:15:17,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 19:15:17,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 19:15:17,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 19:15:17,636 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 19:15:17,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de455e90ef2ae1a82fb7a87bbcdb07831c7ef68e47976e1b2868a3e9de47a0a2 [2021-12-19 19:15:17,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 19:15:17,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 19:15:17,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 19:15:17,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 19:15:17,831 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 19:15:17,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/bist_cell.cil.c [2021-12-19 19:15:17,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f5074ed/2abbec6a7c824a0fae46e154701302d6/FLAGb445692e7 [2021-12-19 19:15:18,247 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 19:15:18,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/bist_cell.cil.c [2021-12-19 19:15:18,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f5074ed/2abbec6a7c824a0fae46e154701302d6/FLAGb445692e7 [2021-12-19 19:15:18,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6f5074ed/2abbec6a7c824a0fae46e154701302d6 [2021-12-19 19:15:18,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 19:15:18,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 19:15:18,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 19:15:18,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 19:15:18,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 19:15:18,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1f4883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18, skipping insertion in model container [2021-12-19 19:15:18,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 19:15:18,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 19:15:18,417 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/systemc/bist_cell.cil.c[639,652] [2021-12-19 19:15:18,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:15:18,451 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 19:15:18,458 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/systemc/bist_cell.cil.c[639,652] [2021-12-19 19:15:18,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:15:18,486 INFO L208 MainTranslator]: Completed translation [2021-12-19 19:15:18,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18 WrapperNode [2021-12-19 19:15:18,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 19:15:18,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 19:15:18,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 19:15:18,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 19:15:18,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,516 INFO L137 Inliner]: procedures = 30, calls = 30, calls flagged for inlining = 25, calls inlined = 31, statements flattened = 344 [2021-12-19 19:15:18,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 19:15:18,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 19:15:18,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 19:15:18,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 19:15:18,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 19:15:18,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 19:15:18,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 19:15:18,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 19:15:18,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (1/1) ... [2021-12-19 19:15:18,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:18,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:18,572 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) [2021-12-19 19:15:18,582 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 [2021-12-19 19:15:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 19:15:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 19:15:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 19:15:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 19:15:18,680 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 19:15:18,694 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 19:15:18,970 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 19:15:18,976 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 19:15:18,976 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 19:15:18,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:15:18 BoogieIcfgContainer [2021-12-19 19:15:18,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 19:15:18,979 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 19:15:18,979 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 19:15:18,981 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 19:15:18,982 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:15:18,982 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 07:15:18" (1/3) ... [2021-12-19 19:15:18,983 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ba98712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:15:18, skipping insertion in model container [2021-12-19 19:15:18,983 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:15:18,983 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:15:18" (2/3) ... [2021-12-19 19:15:18,983 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ba98712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:15:18, skipping insertion in model container [2021-12-19 19:15:18,983 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:15:18,983 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:15:18" (3/3) ... [2021-12-19 19:15:18,984 INFO L388 chiAutomizerObserver]: Analyzing ICFG bist_cell.cil.c [2021-12-19 19:15:19,021 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 19:15:19,021 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 19:15:19,021 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 19:15:19,021 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 19:15:19,021 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 19:15:19,021 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 19:15:19,022 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 19:15:19,022 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 19:15:19,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 125 states, 124 states have (on average 1.5887096774193548) internal successors, (197), 124 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:15:19,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:19,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:19,065 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] [2021-12-19 19:15:19,065 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:19,065 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 19:15:19,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 125 states, 124 states have (on average 1.5887096774193548) internal successors, (197), 124 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:15:19,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:19,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:19,078 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] [2021-12-19 19:15:19,078 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:19,083 INFO L791 eck$LassoCheckResult]: Stem: 113#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 43#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 18#L490true assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 77#L212true assume !(1 == ~b0_req_up~0); 125#L212-2true assume !(1 == ~b1_req_up~0); 85#L219-1true assume !(1 == ~d0_req_up~0); 44#L226-1true assume !(1 == ~d1_req_up~0); 67#L233-1true assume !(1 == ~z_req_up~0); 108#L240-1true assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 16#L255true assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 118#L255-2true assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 68#L321true assume !(0 == ~b0_ev~0); 84#L321-2true assume !(0 == ~b1_ev~0); 25#L326-1true assume !(0 == ~d0_ev~0); 28#L331-1true assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 9#L336-1true assume !(0 == ~z_ev~0); 123#L341-1true assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 119#L107true assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 107#L129true is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 58#L130true activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 92#L390true assume !(0 != activate_threads_~tmp~1#1); 112#L390-2true assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 57#L354true assume !(1 == ~b0_ev~0); 40#L354-2true assume !(1 == ~b1_ev~0); 90#L359-1true assume !(1 == ~d0_ev~0); 42#L364-1true assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 48#L369-1true assume !(1 == ~z_ev~0); 96#L374-1true assume { :end_inline_reset_delta_events } true; 35#L432-2true [2021-12-19 19:15:19,083 INFO L793 eck$LassoCheckResult]: Loop: 35#L432-2true assume !false; 71#L433true start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 8#L295true assume !true; 49#L311true assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 86#L212-3true assume !(1 == ~b0_req_up~0); 109#L212-5true assume !(1 == ~b1_req_up~0); 89#L219-3true assume !(1 == ~d0_req_up~0); 5#L226-3true assume !(1 == ~d1_req_up~0); 38#L233-3true assume !(1 == ~z_req_up~0); 17#L240-3true assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 82#L321-3true assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 66#L321-5true assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 93#L326-3true assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 52#L331-3true assume !(0 == ~d1_ev~0); 12#L336-3true assume 0 == ~z_ev~0;~z_ev~0 := 1; 19#L341-3true assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 115#L107-1true assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 45#L129-1true is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 122#L130-1true activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 10#L390-3true assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 24#L390-5true assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 33#L354-3true assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 101#L354-5true assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 99#L359-3true assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 83#L364-3true assume !(1 == ~d1_ev~0); 81#L369-3true assume 1 == ~z_ev~0;~z_ev~0 := 2; 50#L374-3true assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 73#L268-1true assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 120#L275-1true exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 41#L276-1true stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 14#L407true assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 117#L414true stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 105#L415true start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 74#L449true assume !(0 != start_simulation_~tmp~3#1); 35#L432-2true [2021-12-19 19:15:19,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1345002148, now seen corresponding path program 1 times [2021-12-19 19:15:19,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140748401] [2021-12-19 19:15:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140748401] [2021-12-19 19:15:19,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140748401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:19,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721086102] [2021-12-19 19:15:19,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,238 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,240 INFO L85 PathProgramCache]: Analyzing trace with hash 972845291, now seen corresponding path program 1 times [2021-12-19 19:15:19,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294841192] [2021-12-19 19:15:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294841192] [2021-12-19 19:15:19,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294841192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 19:15:19,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760563537] [2021-12-19 19:15:19,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,271 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:19,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:19,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:19,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:19,299 INFO L87 Difference]: Start difference. First operand has 125 states, 124 states have (on average 1.5887096774193548) internal successors, (197), 124 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-19 19:15:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:19,341 INFO L93 Difference]: Finished difference Result 124 states and 190 transitions. [2021-12-19 19:15:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:19,348 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 190 transitions. [2021-12-19 19:15:19,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 117 states and 183 transitions. [2021-12-19 19:15:19,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-12-19 19:15:19,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-12-19 19:15:19,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 183 transitions. [2021-12-19 19:15:19,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:15:19,357 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 183 transitions. [2021-12-19 19:15:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 183 transitions. [2021-12-19 19:15:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-12-19 19:15:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.564102564102564) internal successors, (183), 116 states have internal predecessors, (183), 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) [2021-12-19 19:15:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 183 transitions. [2021-12-19 19:15:19,378 INFO L704 BuchiCegarLoop]: Abstraction has 117 states and 183 transitions. [2021-12-19 19:15:19,378 INFO L587 BuchiCegarLoop]: Abstraction has 117 states and 183 transitions. [2021-12-19 19:15:19,379 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 19:15:19,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 183 transitions. [2021-12-19 19:15:19,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:19,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:19,382 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] [2021-12-19 19:15:19,382 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:19,383 INFO L791 eck$LassoCheckResult]: Stem: 372#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 320#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 282#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 283#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 345#L137 assume !(~b0_val~0 != ~b0_val_t~0); 346#L137-2 ~b0_req_up~0 := 0; 340#L145 assume { :end_inline_update_b0 } true; 341#L212-2 assume !(1 == ~b1_req_up~0); 363#L219-1 assume !(1 == ~d0_req_up~0); 264#L226-1 assume !(1 == ~d1_req_up~0); 322#L233-1 assume !(1 == ~z_req_up~0); 350#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 278#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 279#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 351#L321 assume !(0 == ~b0_ev~0); 352#L321-2 assume !(0 == ~b1_ev~0); 295#L326-1 assume !(0 == ~d0_ev~0); 296#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 267#L336-1 assume !(0 == ~z_ev~0); 268#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 374#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 288#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 335#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 336#L390 assume !(0 != activate_threads_~tmp~1#1); 365#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 334#L354 assume !(1 == ~b0_ev~0); 315#L354-2 assume !(1 == ~b1_ev~0); 316#L359-1 assume !(1 == ~d0_ev~0); 318#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 319#L369-1 assume !(1 == ~z_ev~0); 324#L374-1 assume { :end_inline_reset_delta_events } true; 307#L432-2 [2021-12-19 19:15:19,383 INFO L793 eck$LassoCheckResult]: Loop: 307#L432-2 assume !false; 308#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 265#L295 assume !false; 266#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 292#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 293#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 258#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 259#L290 assume !(0 != eval_~tmp___0~0#1); 325#L311 assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 326#L212-3 assume !(1 == ~b0_req_up~0); 354#L212-5 assume !(1 == ~b1_req_up~0); 310#L219-3 assume !(1 == ~d0_req_up~0); 260#L226-3 assume !(1 == ~d1_req_up~0); 261#L233-3 assume !(1 == ~z_req_up~0); 280#L240-3 assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 281#L321-3 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 347#L321-5 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 348#L326-3 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 330#L331-3 assume !(0 == ~d1_ev~0); 274#L336-3 assume 0 == ~z_ev~0;~z_ev~0 := 1; 275#L341-3 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 284#L107-1 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 300#L129-1 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 323#L130-1 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 269#L390-3 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 270#L390-5 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 294#L354-3 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 304#L354-5 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 368#L359-3 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 362#L364-3 assume !(1 == ~d1_ev~0); 361#L369-3 assume 1 == ~z_ev~0;~z_ev~0 := 2; 327#L374-3 assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 328#L268-1 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 355#L275-1 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 317#L276-1 stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 276#L407 assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 277#L414 stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 369#L415 start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 356#L449 assume !(0 != start_simulation_~tmp~3#1); 307#L432-2 [2021-12-19 19:15:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1840469421, now seen corresponding path program 1 times [2021-12-19 19:15:19,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595548720] [2021-12-19 19:15:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595548720] [2021-12-19 19:15:19,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595548720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:19,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770820928] [2021-12-19 19:15:19,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,420 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1200633539, now seen corresponding path program 1 times [2021-12-19 19:15:19,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811463396] [2021-12-19 19:15:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811463396] [2021-12-19 19:15:19,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811463396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:15:19,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45149310] [2021-12-19 19:15:19,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,457 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:19,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:19,459 INFO L87 Difference]: Start difference. First operand 117 states and 183 transitions. cyclomatic complexity: 67 Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:15:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:19,477 INFO L93 Difference]: Finished difference Result 117 states and 182 transitions. [2021-12-19 19:15:19,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:19,478 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 182 transitions. [2021-12-19 19:15:19,478 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 117 states and 182 transitions. [2021-12-19 19:15:19,481 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-12-19 19:15:19,481 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-12-19 19:15:19,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 182 transitions. [2021-12-19 19:15:19,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:15:19,483 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 182 transitions. [2021-12-19 19:15:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 182 transitions. [2021-12-19 19:15:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-12-19 19:15:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.5555555555555556) internal successors, (182), 116 states have internal predecessors, (182), 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) [2021-12-19 19:15:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 182 transitions. [2021-12-19 19:15:19,489 INFO L704 BuchiCegarLoop]: Abstraction has 117 states and 182 transitions. [2021-12-19 19:15:19,489 INFO L587 BuchiCegarLoop]: Abstraction has 117 states and 182 transitions. [2021-12-19 19:15:19,490 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 19:15:19,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 182 transitions. [2021-12-19 19:15:19,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:19,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:19,494 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] [2021-12-19 19:15:19,494 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:19,495 INFO L791 eck$LassoCheckResult]: Stem: 615#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 563#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 525#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 526#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 588#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 589#L137-2 ~b0_req_up~0 := 0; 583#L145 assume { :end_inline_update_b0 } true; 584#L212-2 assume !(1 == ~b1_req_up~0); 606#L219-1 assume !(1 == ~d0_req_up~0); 507#L226-1 assume !(1 == ~d1_req_up~0); 565#L233-1 assume !(1 == ~z_req_up~0); 593#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 521#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 522#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 594#L321 assume !(0 == ~b0_ev~0); 595#L321-2 assume !(0 == ~b1_ev~0); 538#L326-1 assume !(0 == ~d0_ev~0); 539#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 510#L336-1 assume !(0 == ~z_ev~0); 511#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 617#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 531#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 578#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 579#L390 assume !(0 != activate_threads_~tmp~1#1); 608#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 577#L354 assume !(1 == ~b0_ev~0); 558#L354-2 assume !(1 == ~b1_ev~0); 559#L359-1 assume !(1 == ~d0_ev~0); 561#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 562#L369-1 assume !(1 == ~z_ev~0); 567#L374-1 assume { :end_inline_reset_delta_events } true; 550#L432-2 [2021-12-19 19:15:19,495 INFO L793 eck$LassoCheckResult]: Loop: 550#L432-2 assume !false; 551#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 508#L295 assume !false; 509#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 535#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 536#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 501#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 502#L290 assume !(0 != eval_~tmp___0~0#1); 568#L311 assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 569#L212-3 assume !(1 == ~b0_req_up~0); 597#L212-5 assume !(1 == ~b1_req_up~0); 553#L219-3 assume !(1 == ~d0_req_up~0); 503#L226-3 assume !(1 == ~d1_req_up~0); 504#L233-3 assume !(1 == ~z_req_up~0); 523#L240-3 assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 524#L321-3 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 590#L321-5 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 591#L326-3 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 573#L331-3 assume !(0 == ~d1_ev~0); 517#L336-3 assume 0 == ~z_ev~0;~z_ev~0 := 1; 518#L341-3 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 527#L107-1 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 543#L129-1 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 566#L130-1 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 512#L390-3 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 513#L390-5 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 537#L354-3 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 547#L354-5 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 611#L359-3 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 605#L364-3 assume !(1 == ~d1_ev~0); 604#L369-3 assume 1 == ~z_ev~0;~z_ev~0 := 2; 570#L374-3 assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 571#L268-1 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 598#L275-1 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 560#L276-1 stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 519#L407 assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 520#L414 stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 612#L415 start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 599#L449 assume !(0 != start_simulation_~tmp~3#1); 550#L432-2 [2021-12-19 19:15:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,495 INFO L85 PathProgramCache]: Analyzing trace with hash 531269841, now seen corresponding path program 1 times [2021-12-19 19:15:19,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31127776] [2021-12-19 19:15:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31127776] [2021-12-19 19:15:19,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31127776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:19,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413964149] [2021-12-19 19:15:19,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,536 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:19,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1200633539, now seen corresponding path program 2 times [2021-12-19 19:15:19,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61263] [2021-12-19 19:15:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61263] [2021-12-19 19:15:19,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:15:19,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690762841] [2021-12-19 19:15:19,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,577 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:19,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:19,579 INFO L87 Difference]: Start difference. First operand 117 states and 182 transitions. cyclomatic complexity: 66 Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:15:19,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:19,599 INFO L93 Difference]: Finished difference Result 117 states and 181 transitions. [2021-12-19 19:15:19,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:19,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 181 transitions. [2021-12-19 19:15:19,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,602 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 117 states and 181 transitions. [2021-12-19 19:15:19,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-12-19 19:15:19,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-12-19 19:15:19,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 181 transitions. [2021-12-19 19:15:19,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:15:19,606 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 181 transitions. [2021-12-19 19:15:19,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 181 transitions. [2021-12-19 19:15:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-12-19 19:15:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.547008547008547) internal successors, (181), 116 states have internal predecessors, (181), 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) [2021-12-19 19:15:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 181 transitions. [2021-12-19 19:15:19,623 INFO L704 BuchiCegarLoop]: Abstraction has 117 states and 181 transitions. [2021-12-19 19:15:19,623 INFO L587 BuchiCegarLoop]: Abstraction has 117 states and 181 transitions. [2021-12-19 19:15:19,623 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 19:15:19,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 181 transitions. [2021-12-19 19:15:19,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:19,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:19,626 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] [2021-12-19 19:15:19,627 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:19,627 INFO L791 eck$LassoCheckResult]: Stem: 858#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 806#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 768#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 769#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 831#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 832#L137-2 ~b0_req_up~0 := 0; 826#L145 assume { :end_inline_update_b0 } true; 827#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 787#L152 assume !(~b1_val~0 != ~b1_val_t~0); 788#L152-2 ~b1_req_up~0 := 0; 850#L160 assume { :end_inline_update_b1 } true; 849#L219-1 assume !(1 == ~d0_req_up~0); 750#L226-1 assume !(1 == ~d1_req_up~0); 808#L233-1 assume !(1 == ~z_req_up~0); 836#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 764#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 765#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 837#L321 assume !(0 == ~b0_ev~0); 838#L321-2 assume !(0 == ~b1_ev~0); 781#L326-1 assume !(0 == ~d0_ev~0); 782#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 753#L336-1 assume !(0 == ~z_ev~0); 754#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 860#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 774#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 821#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 822#L390 assume !(0 != activate_threads_~tmp~1#1); 851#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 820#L354 assume !(1 == ~b0_ev~0); 801#L354-2 assume !(1 == ~b1_ev~0); 802#L359-1 assume !(1 == ~d0_ev~0); 804#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 805#L369-1 assume !(1 == ~z_ev~0); 810#L374-1 assume { :end_inline_reset_delta_events } true; 793#L432-2 [2021-12-19 19:15:19,628 INFO L793 eck$LassoCheckResult]: Loop: 793#L432-2 assume !false; 794#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 751#L295 assume !false; 752#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 778#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 779#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 744#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 745#L290 assume !(0 != eval_~tmp___0~0#1); 811#L311 assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 812#L212-3 assume !(1 == ~b0_req_up~0); 840#L212-5 assume !(1 == ~b1_req_up~0); 796#L219-3 assume !(1 == ~d0_req_up~0); 746#L226-3 assume !(1 == ~d1_req_up~0); 747#L233-3 assume !(1 == ~z_req_up~0); 766#L240-3 assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 767#L321-3 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 833#L321-5 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 834#L326-3 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 816#L331-3 assume !(0 == ~d1_ev~0); 760#L336-3 assume 0 == ~z_ev~0;~z_ev~0 := 1; 761#L341-3 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 770#L107-1 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 786#L129-1 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 809#L130-1 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 755#L390-3 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 756#L390-5 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 780#L354-3 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 790#L354-5 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 854#L359-3 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 848#L364-3 assume !(1 == ~d1_ev~0); 847#L369-3 assume 1 == ~z_ev~0;~z_ev~0 := 2; 813#L374-3 assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 814#L268-1 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 841#L275-1 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 803#L276-1 stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 762#L407 assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 763#L414 stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 855#L415 start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 842#L449 assume !(0 != start_simulation_~tmp~3#1); 793#L432-2 [2021-12-19 19:15:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1296388927, now seen corresponding path program 1 times [2021-12-19 19:15:19,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533660378] [2021-12-19 19:15:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533660378] [2021-12-19 19:15:19,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533660378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 19:15:19,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415743897] [2021-12-19 19:15:19,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,679 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:19,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1200633539, now seen corresponding path program 3 times [2021-12-19 19:15:19,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893017750] [2021-12-19 19:15:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893017750] [2021-12-19 19:15:19,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893017750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:15:19,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52396917] [2021-12-19 19:15:19,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,707 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:19,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 19:15:19,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 19:15:19,708 INFO L87 Difference]: Start difference. First operand 117 states and 181 transitions. cyclomatic complexity: 65 Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-12-19 19:15:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:19,735 INFO L93 Difference]: Finished difference Result 117 states and 180 transitions. [2021-12-19 19:15:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 19:15:19,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 180 transitions. [2021-12-19 19:15:19,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,738 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 117 states and 180 transitions. [2021-12-19 19:15:19,738 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-12-19 19:15:19,738 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-12-19 19:15:19,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 180 transitions. [2021-12-19 19:15:19,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:15:19,739 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 180 transitions. [2021-12-19 19:15:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 180 transitions. [2021-12-19 19:15:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-12-19 19:15:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.5384615384615385) internal successors, (180), 116 states have internal predecessors, (180), 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) [2021-12-19 19:15:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 180 transitions. [2021-12-19 19:15:19,742 INFO L704 BuchiCegarLoop]: Abstraction has 117 states and 180 transitions. [2021-12-19 19:15:19,742 INFO L587 BuchiCegarLoop]: Abstraction has 117 states and 180 transitions. [2021-12-19 19:15:19,742 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 19:15:19,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 180 transitions. [2021-12-19 19:15:19,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:19,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:19,744 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] [2021-12-19 19:15:19,744 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:19,744 INFO L791 eck$LassoCheckResult]: Stem: 1104#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 1052#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 1014#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 1015#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 1077#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 1078#L137-2 ~b0_req_up~0 := 0; 1072#L145 assume { :end_inline_update_b0 } true; 1073#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 1033#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 1034#L152-2 ~b1_req_up~0 := 0; 1096#L160 assume { :end_inline_update_b1 } true; 1095#L219-1 assume !(1 == ~d0_req_up~0); 996#L226-1 assume !(1 == ~d1_req_up~0); 1054#L233-1 assume !(1 == ~z_req_up~0); 1082#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 1010#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 1011#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 1083#L321 assume !(0 == ~b0_ev~0); 1084#L321-2 assume !(0 == ~b1_ev~0); 1027#L326-1 assume !(0 == ~d0_ev~0); 1028#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 999#L336-1 assume !(0 == ~z_ev~0); 1000#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 1106#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 1020#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 1067#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 1068#L390 assume !(0 != activate_threads_~tmp~1#1); 1097#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 1066#L354 assume !(1 == ~b0_ev~0); 1047#L354-2 assume !(1 == ~b1_ev~0); 1048#L359-1 assume !(1 == ~d0_ev~0); 1050#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 1051#L369-1 assume !(1 == ~z_ev~0); 1056#L374-1 assume { :end_inline_reset_delta_events } true; 1039#L432-2 [2021-12-19 19:15:19,745 INFO L793 eck$LassoCheckResult]: Loop: 1039#L432-2 assume !false; 1040#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 997#L295 assume !false; 998#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 1024#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 1025#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 990#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 991#L290 assume !(0 != eval_~tmp___0~0#1); 1057#L311 assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 1058#L212-3 assume !(1 == ~b0_req_up~0); 1086#L212-5 assume !(1 == ~b1_req_up~0); 1042#L219-3 assume !(1 == ~d0_req_up~0); 992#L226-3 assume !(1 == ~d1_req_up~0); 993#L233-3 assume !(1 == ~z_req_up~0); 1012#L240-3 assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 1013#L321-3 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 1079#L321-5 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 1080#L326-3 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 1062#L331-3 assume !(0 == ~d1_ev~0); 1006#L336-3 assume 0 == ~z_ev~0;~z_ev~0 := 1; 1007#L341-3 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 1016#L107-1 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 1032#L129-1 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 1055#L130-1 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 1001#L390-3 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 1002#L390-5 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 1026#L354-3 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 1036#L354-5 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 1100#L359-3 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 1094#L364-3 assume !(1 == ~d1_ev~0); 1093#L369-3 assume 1 == ~z_ev~0;~z_ev~0 := 2; 1059#L374-3 assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 1060#L268-1 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 1087#L275-1 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 1049#L276-1 stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 1008#L407 assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 1009#L414 stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 1101#L415 start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 1088#L449 assume !(0 != start_simulation_~tmp~3#1); 1039#L432-2 [2021-12-19 19:15:19,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1234349313, now seen corresponding path program 1 times [2021-12-19 19:15:19,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566090777] [2021-12-19 19:15:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566090777] [2021-12-19 19:15:19,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566090777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:19,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910640299] [2021-12-19 19:15:19,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,767 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:19,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1200633539, now seen corresponding path program 4 times [2021-12-19 19:15:19,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87768395] [2021-12-19 19:15:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87768395] [2021-12-19 19:15:19,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87768395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:15:19,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119698769] [2021-12-19 19:15:19,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,792 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:19,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:19,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:19,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:19,793 INFO L87 Difference]: Start difference. First operand 117 states and 180 transitions. cyclomatic complexity: 64 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-12-19 19:15:19,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:19,800 INFO L93 Difference]: Finished difference Result 117 states and 179 transitions. [2021-12-19 19:15:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:19,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 179 transitions. [2021-12-19 19:15:19,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 117 states and 179 transitions. [2021-12-19 19:15:19,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-12-19 19:15:19,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-12-19 19:15:19,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 179 transitions. [2021-12-19 19:15:19,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:15:19,807 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 179 transitions. [2021-12-19 19:15:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 179 transitions. [2021-12-19 19:15:19,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-12-19 19:15:19,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.5299145299145298) internal successors, (179), 116 states have internal predecessors, (179), 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) [2021-12-19 19:15:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 179 transitions. [2021-12-19 19:15:19,818 INFO L704 BuchiCegarLoop]: Abstraction has 117 states and 179 transitions. [2021-12-19 19:15:19,818 INFO L587 BuchiCegarLoop]: Abstraction has 117 states and 179 transitions. [2021-12-19 19:15:19,818 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-19 19:15:19,818 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 179 transitions. [2021-12-19 19:15:19,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:19,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:19,819 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] [2021-12-19 19:15:19,819 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:19,820 INFO L791 eck$LassoCheckResult]: Stem: 1347#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 1295#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 1257#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 1258#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 1320#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 1321#L137-2 ~b0_req_up~0 := 0; 1315#L145 assume { :end_inline_update_b0 } true; 1316#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 1276#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 1277#L152-2 ~b1_req_up~0 := 0; 1339#L160 assume { :end_inline_update_b1 } true; 1338#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 1260#L167 assume !(~d0_val~0 != ~d0_val_t~0); 1261#L167-2 ~d0_req_up~0 := 0; 1238#L175 assume { :end_inline_update_d0 } true; 1239#L226-1 assume !(1 == ~d1_req_up~0); 1297#L233-1 assume !(1 == ~z_req_up~0); 1325#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 1253#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 1254#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 1326#L321 assume !(0 == ~b0_ev~0); 1327#L321-2 assume !(0 == ~b1_ev~0); 1270#L326-1 assume !(0 == ~d0_ev~0); 1271#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 1242#L336-1 assume !(0 == ~z_ev~0); 1243#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 1349#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 1263#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 1310#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 1311#L390 assume !(0 != activate_threads_~tmp~1#1); 1340#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 1309#L354 assume !(1 == ~b0_ev~0); 1290#L354-2 assume !(1 == ~b1_ev~0); 1291#L359-1 assume !(1 == ~d0_ev~0); 1293#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 1294#L369-1 assume !(1 == ~z_ev~0); 1299#L374-1 assume { :end_inline_reset_delta_events } true; 1282#L432-2 [2021-12-19 19:15:19,820 INFO L793 eck$LassoCheckResult]: Loop: 1282#L432-2 assume !false; 1283#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 1240#L295 assume !false; 1241#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 1267#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 1268#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 1233#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 1234#L290 assume !(0 != eval_~tmp___0~0#1); 1300#L311 assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 1301#L212-3 assume !(1 == ~b0_req_up~0); 1329#L212-5 assume !(1 == ~b1_req_up~0); 1285#L219-3 assume !(1 == ~d0_req_up~0); 1235#L226-3 assume !(1 == ~d1_req_up~0); 1236#L233-3 assume !(1 == ~z_req_up~0); 1255#L240-3 assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 1256#L321-3 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 1322#L321-5 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 1323#L326-3 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 1305#L331-3 assume !(0 == ~d1_ev~0); 1249#L336-3 assume 0 == ~z_ev~0;~z_ev~0 := 1; 1250#L341-3 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 1259#L107-1 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 1275#L129-1 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 1298#L130-1 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 1244#L390-3 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 1245#L390-5 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 1269#L354-3 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 1279#L354-5 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 1343#L359-3 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 1337#L364-3 assume !(1 == ~d1_ev~0); 1336#L369-3 assume 1 == ~z_ev~0;~z_ev~0 := 2; 1302#L374-3 assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 1303#L268-1 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 1330#L275-1 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 1292#L276-1 stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 1251#L407 assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 1252#L414 stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 1344#L415 start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 1331#L449 assume !(0 != start_simulation_~tmp~3#1); 1282#L432-2 [2021-12-19 19:15:19,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2115080082, now seen corresponding path program 1 times [2021-12-19 19:15:19,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675170667] [2021-12-19 19:15:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675170667] [2021-12-19 19:15:19,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675170667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 19:15:19,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797910014] [2021-12-19 19:15:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,860 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:19,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1200633539, now seen corresponding path program 5 times [2021-12-19 19:15:19,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401013003] [2021-12-19 19:15:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401013003] [2021-12-19 19:15:19,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401013003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:15:19,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562507328] [2021-12-19 19:15:19,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,885 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:19,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:19,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 19:15:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 19:15:19,885 INFO L87 Difference]: Start difference. First operand 117 states and 179 transitions. cyclomatic complexity: 63 Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-12-19 19:15:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:19,911 INFO L93 Difference]: Finished difference Result 117 states and 178 transitions. [2021-12-19 19:15:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 19:15:19,912 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 178 transitions. [2021-12-19 19:15:19,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,913 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 117 states and 178 transitions. [2021-12-19 19:15:19,913 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-12-19 19:15:19,914 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-12-19 19:15:19,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 178 transitions. [2021-12-19 19:15:19,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:15:19,914 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 178 transitions. [2021-12-19 19:15:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 178 transitions. [2021-12-19 19:15:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-12-19 19:15:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.5213675213675213) internal successors, (178), 116 states have internal predecessors, (178), 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) [2021-12-19 19:15:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 178 transitions. [2021-12-19 19:15:19,916 INFO L704 BuchiCegarLoop]: Abstraction has 117 states and 178 transitions. [2021-12-19 19:15:19,916 INFO L587 BuchiCegarLoop]: Abstraction has 117 states and 178 transitions. [2021-12-19 19:15:19,916 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-19 19:15:19,916 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 178 transitions. [2021-12-19 19:15:19,917 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:19,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:19,918 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] [2021-12-19 19:15:19,918 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:19,918 INFO L791 eck$LassoCheckResult]: Stem: 1593#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 1541#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 1503#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 1504#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 1566#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 1567#L137-2 ~b0_req_up~0 := 0; 1561#L145 assume { :end_inline_update_b0 } true; 1562#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 1522#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 1523#L152-2 ~b1_req_up~0 := 0; 1585#L160 assume { :end_inline_update_b1 } true; 1584#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 1506#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 1507#L167-2 ~d0_req_up~0 := 0; 1484#L175 assume { :end_inline_update_d0 } true; 1485#L226-1 assume !(1 == ~d1_req_up~0); 1543#L233-1 assume !(1 == ~z_req_up~0); 1571#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 1499#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 1500#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 1572#L321 assume !(0 == ~b0_ev~0); 1573#L321-2 assume !(0 == ~b1_ev~0); 1516#L326-1 assume !(0 == ~d0_ev~0); 1517#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 1488#L336-1 assume !(0 == ~z_ev~0); 1489#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 1595#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 1509#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 1556#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 1557#L390 assume !(0 != activate_threads_~tmp~1#1); 1586#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 1555#L354 assume !(1 == ~b0_ev~0); 1536#L354-2 assume !(1 == ~b1_ev~0); 1537#L359-1 assume !(1 == ~d0_ev~0); 1539#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 1540#L369-1 assume !(1 == ~z_ev~0); 1545#L374-1 assume { :end_inline_reset_delta_events } true; 1528#L432-2 [2021-12-19 19:15:19,918 INFO L793 eck$LassoCheckResult]: Loop: 1528#L432-2 assume !false; 1529#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 1486#L295 assume !false; 1487#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 1513#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 1514#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 1479#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 1480#L290 assume !(0 != eval_~tmp___0~0#1); 1546#L311 assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 1547#L212-3 assume !(1 == ~b0_req_up~0); 1575#L212-5 assume !(1 == ~b1_req_up~0); 1531#L219-3 assume !(1 == ~d0_req_up~0); 1481#L226-3 assume !(1 == ~d1_req_up~0); 1482#L233-3 assume !(1 == ~z_req_up~0); 1501#L240-3 assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 1502#L321-3 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 1568#L321-5 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 1569#L326-3 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 1551#L331-3 assume !(0 == ~d1_ev~0); 1495#L336-3 assume 0 == ~z_ev~0;~z_ev~0 := 1; 1496#L341-3 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 1505#L107-1 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 1521#L129-1 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 1544#L130-1 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 1490#L390-3 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 1491#L390-5 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 1515#L354-3 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 1525#L354-5 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 1589#L359-3 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 1583#L364-3 assume !(1 == ~d1_ev~0); 1582#L369-3 assume 1 == ~z_ev~0;~z_ev~0 := 2; 1548#L374-3 assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 1549#L268-1 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 1576#L275-1 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 1538#L276-1 stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 1497#L407 assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 1498#L414 stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 1590#L415 start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 1577#L449 assume !(0 != start_simulation_~tmp~3#1); 1528#L432-2 [2021-12-19 19:15:19,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2039338604, now seen corresponding path program 1 times [2021-12-19 19:15:19,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255453431] [2021-12-19 19:15:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255453431] [2021-12-19 19:15:19,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255453431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:19,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916124243] [2021-12-19 19:15:19,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,952 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:19,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1200633539, now seen corresponding path program 6 times [2021-12-19 19:15:19,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571056337] [2021-12-19 19:15:19,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:19,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:19,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571056337] [2021-12-19 19:15:19,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571056337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:19,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:19,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:15:19,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104802795] [2021-12-19 19:15:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:19,977 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:19,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:19,978 INFO L87 Difference]: Start difference. First operand 117 states and 178 transitions. cyclomatic complexity: 62 Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-12-19 19:15:19,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:19,984 INFO L93 Difference]: Finished difference Result 117 states and 177 transitions. [2021-12-19 19:15:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:19,985 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 177 transitions. [2021-12-19 19:15:19,986 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,986 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 117 states and 177 transitions. [2021-12-19 19:15:19,987 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-12-19 19:15:19,987 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-12-19 19:15:19,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 177 transitions. [2021-12-19 19:15:19,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:15:19,987 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 177 transitions. [2021-12-19 19:15:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 177 transitions. [2021-12-19 19:15:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-12-19 19:15:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.5128205128205128) internal successors, (177), 116 states have internal predecessors, (177), 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) [2021-12-19 19:15:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 177 transitions. [2021-12-19 19:15:19,989 INFO L704 BuchiCegarLoop]: Abstraction has 117 states and 177 transitions. [2021-12-19 19:15:19,989 INFO L587 BuchiCegarLoop]: Abstraction has 117 states and 177 transitions. [2021-12-19 19:15:19,989 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-19 19:15:19,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 177 transitions. [2021-12-19 19:15:19,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-12-19 19:15:19,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:19,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:19,991 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] [2021-12-19 19:15:19,991 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:19,991 INFO L791 eck$LassoCheckResult]: Stem: 1836#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 1784#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 1746#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 1747#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 1809#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 1810#L137-2 ~b0_req_up~0 := 0; 1803#L145 assume { :end_inline_update_b0 } true; 1804#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 1765#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 1766#L152-2 ~b1_req_up~0 := 0; 1828#L160 assume { :end_inline_update_b1 } true; 1827#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 1749#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 1750#L167-2 ~d0_req_up~0 := 0; 1727#L175 assume { :end_inline_update_d0 } true; 1728#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 1785#L182 assume !(~d1_val~0 != ~d1_val_t~0); 1754#L182-2 ~d1_req_up~0 := 0; 1755#L190 assume { :end_inline_update_d1 } true; 1808#L233-1 assume !(1 == ~z_req_up~0); 1814#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 1742#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 1743#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 1815#L321 assume !(0 == ~b0_ev~0); 1816#L321-2 assume !(0 == ~b1_ev~0); 1759#L326-1 assume !(0 == ~d0_ev~0); 1760#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 1731#L336-1 assume !(0 == ~z_ev~0); 1732#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 1838#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 1752#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 1798#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 1799#L390 assume !(0 != activate_threads_~tmp~1#1); 1829#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 1797#L354 assume !(1 == ~b0_ev~0); 1779#L354-2 assume !(1 == ~b1_ev~0); 1780#L359-1 assume !(1 == ~d0_ev~0); 1782#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 1783#L369-1 assume !(1 == ~z_ev~0); 1787#L374-1 assume { :end_inline_reset_delta_events } true; 1771#L432-2 [2021-12-19 19:15:19,991 INFO L793 eck$LassoCheckResult]: Loop: 1771#L432-2 assume !false; 1772#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 1729#L295 assume !false; 1730#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 1756#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 1757#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 1722#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 1723#L290 assume !(0 != eval_~tmp___0~0#1); 1788#L311 assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 1789#L212-3 assume !(1 == ~b0_req_up~0); 1818#L212-5 assume !(1 == ~b1_req_up~0); 1774#L219-3 assume !(1 == ~d0_req_up~0); 1724#L226-3 assume !(1 == ~d1_req_up~0); 1725#L233-3 assume !(1 == ~z_req_up~0); 1744#L240-3 assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 1745#L321-3 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 1811#L321-5 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 1812#L326-3 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 1793#L331-3 assume !(0 == ~d1_ev~0); 1738#L336-3 assume 0 == ~z_ev~0;~z_ev~0 := 1; 1739#L341-3 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 1748#L107-1 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 1764#L129-1 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 1786#L130-1 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 1733#L390-3 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 1734#L390-5 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 1758#L354-3 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 1768#L354-5 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 1832#L359-3 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 1826#L364-3 assume !(1 == ~d1_ev~0); 1825#L369-3 assume 1 == ~z_ev~0;~z_ev~0 := 2; 1790#L374-3 assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 1791#L268-1 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 1819#L275-1 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 1781#L276-1 stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 1740#L407 assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 1741#L414 stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 1833#L415 start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 1820#L449 assume !(0 != start_simulation_~tmp~3#1); 1771#L432-2 [2021-12-19 19:15:19,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash -525437980, now seen corresponding path program 1 times [2021-12-19 19:15:19,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:19,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455480306] [2021-12-19 19:15:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:19,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:20,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:20,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455480306] [2021-12-19 19:15:20,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455480306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:20,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:20,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 19:15:20,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385124278] [2021-12-19 19:15:20,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:20,017 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:20,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:20,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1200633539, now seen corresponding path program 7 times [2021-12-19 19:15:20,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:20,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939140592] [2021-12-19 19:15:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:20,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:20,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:20,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939140592] [2021-12-19 19:15:20,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939140592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:20,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:20,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:15:20,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384107300] [2021-12-19 19:15:20,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:20,039 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:20,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:20,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 19:15:20,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 19:15:20,040 INFO L87 Difference]: Start difference. First operand 117 states and 177 transitions. cyclomatic complexity: 61 Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-12-19 19:15:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:20,089 INFO L93 Difference]: Finished difference Result 151 states and 225 transitions. [2021-12-19 19:15:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 19:15:20,092 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 151 states and 225 transitions. [2021-12-19 19:15:20,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 105 [2021-12-19 19:15:20,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 151 states to 151 states and 225 transitions. [2021-12-19 19:15:20,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 151 [2021-12-19 19:15:20,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 151 [2021-12-19 19:15:20,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 225 transitions. [2021-12-19 19:15:20,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:15:20,094 INFO L681 BuchiCegarLoop]: Abstraction has 151 states and 225 transitions. [2021-12-19 19:15:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states and 225 transitions. [2021-12-19 19:15:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2021-12-19 19:15:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 120 states have (on average 1.5) internal successors, (180), 119 states have internal predecessors, (180), 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) [2021-12-19 19:15:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 180 transitions. [2021-12-19 19:15:20,096 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 180 transitions. [2021-12-19 19:15:20,096 INFO L587 BuchiCegarLoop]: Abstraction has 120 states and 180 transitions. [2021-12-19 19:15:20,096 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-19 19:15:20,096 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 180 transitions. [2021-12-19 19:15:20,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 74 [2021-12-19 19:15:20,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:20,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:20,099 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] [2021-12-19 19:15:20,099 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:20,100 INFO L791 eck$LassoCheckResult]: Stem: 2123#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 2071#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 2032#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 2033#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 2096#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 2097#L137-2 ~b0_req_up~0 := 0; 2090#L145 assume { :end_inline_update_b0 } true; 2091#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 2052#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 2053#L152-2 ~b1_req_up~0 := 0; 2115#L160 assume { :end_inline_update_b1 } true; 2114#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 2035#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 2036#L167-2 ~d0_req_up~0 := 0; 2013#L175 assume { :end_inline_update_d0 } true; 2014#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 2072#L182 assume !(~d1_val~0 != ~d1_val_t~0); 2040#L182-2 ~d1_req_up~0 := 0; 2041#L190 assume { :end_inline_update_d1 } true; 2095#L233-1 assume !(1 == ~z_req_up~0); 2101#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 2028#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 2029#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 2102#L321 assume !(0 == ~b0_ev~0); 2103#L321-2 assume !(0 == ~b1_ev~0); 2046#L326-1 assume !(0 == ~d0_ev~0); 2047#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 2017#L336-1 assume !(0 == ~z_ev~0); 2018#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 2125#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 2038#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 2085#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 2086#L390 assume !(0 != activate_threads_~tmp~1#1); 2116#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 2084#L354 assume !(1 == ~b0_ev~0); 2066#L354-2 assume !(1 == ~b1_ev~0); 2067#L359-1 assume !(1 == ~d0_ev~0); 2069#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 2070#L369-1 assume !(1 == ~z_ev~0); 2074#L374-1 assume { :end_inline_reset_delta_events } true; 2058#L432-2 [2021-12-19 19:15:20,100 INFO L793 eck$LassoCheckResult]: Loop: 2058#L432-2 assume !false; 2059#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 2015#L295 assume !false; 2016#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 2042#L268 assume !(0 == ~comp_m1_st~0);exists_runnable_thread_~__retres1~1#1 := 0; 2044#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 2127#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 2126#L290 assume !(0 != eval_~tmp___0~0#1); 2075#L311 assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 2076#L212-3 assume !(1 == ~b0_req_up~0); 2105#L212-5 assume !(1 == ~b1_req_up~0); 2061#L219-3 assume !(1 == ~d0_req_up~0); 2010#L226-3 assume !(1 == ~d1_req_up~0); 2011#L233-3 assume !(1 == ~z_req_up~0); 2030#L240-3 assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 2031#L321-3 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 2098#L321-5 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 2099#L326-3 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 2080#L331-3 assume !(0 == ~d1_ev~0); 2024#L336-3 assume 0 == ~z_ev~0;~z_ev~0 := 1; 2025#L341-3 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 2034#L107-1 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 2051#L129-1 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 2073#L130-1 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 2019#L390-3 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 2020#L390-5 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 2045#L354-3 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 2055#L354-5 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 2119#L359-3 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 2113#L364-3 assume !(1 == ~d1_ev~0); 2112#L369-3 assume 1 == ~z_ev~0;~z_ev~0 := 2; 2077#L374-3 assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 2078#L268-1 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 2106#L275-1 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 2068#L276-1 stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 2026#L407 assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 2027#L414 stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 2120#L415 start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 2107#L449 assume !(0 != start_simulation_~tmp~3#1); 2058#L432-2 [2021-12-19 19:15:20,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:20,100 INFO L85 PathProgramCache]: Analyzing trace with hash -525437980, now seen corresponding path program 2 times [2021-12-19 19:15:20,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:20,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934955657] [2021-12-19 19:15:20,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:20,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:20,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934955657] [2021-12-19 19:15:20,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934955657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:20,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:20,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 19:15:20,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283162917] [2021-12-19 19:15:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:20,134 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash 356628037, now seen corresponding path program 1 times [2021-12-19 19:15:20,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:20,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408246155] [2021-12-19 19:15:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:20,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:20,142 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:15:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:20,164 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:15:20,498 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 19:15:20,499 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 19:15:20,499 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 19:15:20,499 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 19:15:20,499 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 19:15:20,499 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:20,499 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 19:15:20,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 19:15:20,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: bist_cell.cil.c_Iteration9_Loop [2021-12-19 19:15:20,500 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 19:15:20,500 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 19:15:20,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,742 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 19:15:20,742 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 19:15:20,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:20,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:20,745 INFO L229 MonitoredProcess]: Starting monitored process 2 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) [2021-12-19 19:15:20,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-19 19:15:20,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 19:15:20,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 19:15:20,771 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 19:15:20,771 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_start_simulation_~kernel_st~0#1=3} Honda state: {ULTIMATE.start_start_simulation_~kernel_st~0#1=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 19:15:20,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-19 19:15:20,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:20,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:20,790 INFO L229 MonitoredProcess]: Starting monitored process 3 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) [2021-12-19 19:15:20,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-19 19:15:20,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 19:15:20,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 19:15:20,811 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 19:15:20,812 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {~d1_ev~0=-1} Honda state: {~d1_ev~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 19:15:20,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-19 19:15:20,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:20,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:20,830 INFO L229 MonitoredProcess]: Starting monitored process 4 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) [2021-12-19 19:15:20,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-19 19:15:20,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 19:15:20,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 19:15:20,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-19 19:15:20,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:20,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:20,892 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2021-12-19 19:15:20,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-19 19:15:20,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 19:15:20,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 19:15:20,923 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 19:15:20,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-19 19:15:20,976 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 19:15:20,976 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 19:15:20,976 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 19:15:20,976 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 19:15:20,976 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 19:15:20,976 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:20,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 19:15:20,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 19:15:20,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: bist_cell.cil.c_Iteration9_Loop [2021-12-19 19:15:20,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 19:15:20,976 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 19:15:20,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:20,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:21,208 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 19:15:21,211 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 19:15:21,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:21,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:21,213 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2021-12-19 19:15:21,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-19 19:15:21,215 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 19:15:21,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 19:15:21,222 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 19:15:21,223 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 19:15:21,223 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 19:15:21,223 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 19:15:21,225 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 19:15:21,225 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 19:15:21,239 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 19:15:21,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-19 19:15:21,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:21,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:21,263 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2021-12-19 19:15:21,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-19 19:15:21,267 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 19:15:21,273 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 19:15:21,273 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 19:15:21,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 19:15:21,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 19:15:21,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 19:15:21,274 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 19:15:21,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 19:15:21,287 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 19:15:21,305 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 19:15:21,305 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 19:15:21,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:21,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:21,308 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 19:15:21,312 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 19:15:21,313 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 19:15:21,313 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 19:15:21,313 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(~b0_ev~0) = -1*~b0_ev~0 + 1 Supporting invariants [] [2021-12-19 19:15:21,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-19 19:15:21,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-19 19:15:21,330 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 19:15:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:21,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 19:15:21,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 19:15:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:21,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 19:15:21,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 19:15:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:21,634 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-19 19:15:21,635 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 120 states and 180 transitions. cyclomatic complexity: 61 Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2021-12-19 19:15:21,692 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 120 states and 180 transitions. cyclomatic complexity: 61. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 274 states and 422 transitions. Complement of second has 5 states. [2021-12-19 19:15:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 19:15:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2021-12-19 19:15:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2021-12-19 19:15:21,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 181 transitions. Stem has 40 letters. Loop has 39 letters. [2021-12-19 19:15:21,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 19:15:21,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 181 transitions. Stem has 79 letters. Loop has 39 letters. [2021-12-19 19:15:21,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 19:15:21,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 181 transitions. Stem has 40 letters. Loop has 78 letters. [2021-12-19 19:15:21,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 19:15:21,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 274 states and 422 transitions. [2021-12-19 19:15:21,702 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2021-12-19 19:15:21,704 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 274 states to 274 states and 422 transitions. [2021-12-19 19:15:21,704 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 195 [2021-12-19 19:15:21,704 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 198 [2021-12-19 19:15:21,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 274 states and 422 transitions. [2021-12-19 19:15:21,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:21,704 INFO L681 BuchiCegarLoop]: Abstraction has 274 states and 422 transitions. [2021-12-19 19:15:21,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states and 422 transitions. [2021-12-19 19:15:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2021-12-19 19:15:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 271 states have (on average 1.5387453874538746) internal successors, (417), 270 states have internal predecessors, (417), 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) [2021-12-19 19:15:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 417 transitions. [2021-12-19 19:15:21,708 INFO L704 BuchiCegarLoop]: Abstraction has 271 states and 417 transitions. [2021-12-19 19:15:21,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:21,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 19:15:21,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 19:15:21,709 INFO L87 Difference]: Start difference. First operand 271 states and 417 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-12-19 19:15:21,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:21,727 INFO L93 Difference]: Finished difference Result 271 states and 416 transitions. [2021-12-19 19:15:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 19:15:21,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 271 states and 416 transitions. [2021-12-19 19:15:21,729 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2021-12-19 19:15:21,730 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 271 states to 271 states and 416 transitions. [2021-12-19 19:15:21,730 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 195 [2021-12-19 19:15:21,731 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2021-12-19 19:15:21,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 271 states and 416 transitions. [2021-12-19 19:15:21,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:21,731 INFO L681 BuchiCegarLoop]: Abstraction has 271 states and 416 transitions. [2021-12-19 19:15:21,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states and 416 transitions. [2021-12-19 19:15:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-12-19 19:15:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 270 states have internal predecessors, (416), 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) [2021-12-19 19:15:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 416 transitions. [2021-12-19 19:15:21,735 INFO L704 BuchiCegarLoop]: Abstraction has 271 states and 416 transitions. [2021-12-19 19:15:21,735 INFO L587 BuchiCegarLoop]: Abstraction has 271 states and 416 transitions. [2021-12-19 19:15:21,735 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-19 19:15:21,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 271 states and 416 transitions. [2021-12-19 19:15:21,736 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2021-12-19 19:15:21,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:21,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:21,737 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] [2021-12-19 19:15:21,737 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:21,737 INFO L791 eck$LassoCheckResult]: Stem: 3403#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 3311#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 3247#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 3248#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 3351#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 3352#L137-2 ~b0_req_up~0 := 0; 3342#L145 assume { :end_inline_update_b0 } true; 3343#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 3277#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 3278#L152-2 ~b1_req_up~0 := 0; 3385#L160 assume { :end_inline_update_b1 } true; 3383#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 3251#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 3252#L167-2 ~d0_req_up~0 := 0; 3215#L175 assume { :end_inline_update_d0 } true; 3216#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 3314#L182 assume ~d1_val~0 != ~d1_val_t~0;~d1_val~0 := ~d1_val_t~0;~d1_ev~0 := 0; 3262#L182-2 ~d1_req_up~0 := 0; 3263#L190 assume { :end_inline_update_d1 } true; 3350#L233-1 assume !(1 == ~z_req_up~0); 3358#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 3245#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 3246#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 3359#L321 assume !(0 == ~b0_ev~0); 3360#L321-2 assume !(0 == ~b1_ev~0); 3271#L326-1 assume !(0 == ~d0_ev~0); 3272#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 3225#L336-1 assume !(0 == ~z_ev~0); 3226#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 3406#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 3254#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 3339#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 3340#L390 assume !(0 != activate_threads_~tmp~1#1); 3388#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 3334#L354 assume !(1 == ~b0_ev~0); 3307#L354-2 assume !(1 == ~b1_ev~0); 3308#L359-1 assume !(1 == ~d0_ev~0); 3309#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 3310#L369-1 assume !(1 == ~z_ev~0); 3319#L374-1 assume { :end_inline_reset_delta_events } true; 3391#L432-2 assume !false; 3290#L433 [2021-12-19 19:15:21,738 INFO L793 eck$LassoCheckResult]: Loop: 3290#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 3217#L295 assume !false; 3218#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 3256#L268 assume !(0 == ~comp_m1_st~0);exists_runnable_thread_~__retres1~1#1 := 0; 3258#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 3465#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 3464#L290 assume !(0 != eval_~tmp___0~0#1); 3315#L311 assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 3316#L212-3 assume !(1 == ~b0_req_up~0); 3362#L212-5 assume !(1 == ~b1_req_up~0); 3421#L219-3 assume !(1 == ~d0_req_up~0); 3209#L226-3 assume !(1 == ~d1_req_up~0); 3210#L233-3 assume !(1 == ~z_req_up~0); 3241#L240-3 assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 3242#L321-3 assume !(0 == ~b0_ev~0); 3378#L321-5 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 3430#L326-3 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 3475#L331-3 assume !(0 == ~d1_ev~0); 3474#L336-3 assume 0 == ~z_ev~0;~z_ev~0 := 1; 3473#L341-3 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 3472#L107-1 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 3468#L129-1 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 3467#L130-1 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 3466#L390-3 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 3264#L390-5 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 3265#L354-3 assume !(1 == ~b0_ev~0); 3458#L354-5 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 3429#L359-3 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 3455#L364-3 assume !(1 == ~d1_ev~0); 3376#L369-3 assume 1 == ~z_ev~0;~z_ev~0 := 2; 3320#L374-3 assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 3321#L268-1 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 3365#L275-1 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 3305#L276-1 stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 3237#L407 assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 3238#L414 stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 3396#L415 start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 3367#L449 assume !(0 != start_simulation_~tmp~3#1); 3289#L432-2 assume !false; 3290#L433 [2021-12-19 19:15:21,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:21,738 INFO L85 PathProgramCache]: Analyzing trace with hash 750743388, now seen corresponding path program 1 times [2021-12-19 19:15:21,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:21,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566948828] [2021-12-19 19:15:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:21,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:21,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:21,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566948828] [2021-12-19 19:15:21,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566948828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:21,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:21,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:21,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913249064] [2021-12-19 19:15:21,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:21,784 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:21,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash 618560829, now seen corresponding path program 1 times [2021-12-19 19:15:21,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:21,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685521881] [2021-12-19 19:15:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:21,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:21,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:21,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685521881] [2021-12-19 19:15:21,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685521881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:21,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:21,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:21,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683705944] [2021-12-19 19:15:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:21,803 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:21,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:21,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:21,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:21,804 INFO L87 Difference]: Start difference. First operand 271 states and 416 transitions. cyclomatic complexity: 148 Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-12-19 19:15:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:21,819 INFO L93 Difference]: Finished difference Result 313 states and 475 transitions. [2021-12-19 19:15:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:21,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 313 states and 475 transitions. [2021-12-19 19:15:21,821 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 159 [2021-12-19 19:15:21,822 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 313 states to 303 states and 459 transitions. [2021-12-19 19:15:21,823 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2021-12-19 19:15:21,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2021-12-19 19:15:21,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 303 states and 459 transitions. [2021-12-19 19:15:21,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:21,823 INFO L681 BuchiCegarLoop]: Abstraction has 303 states and 459 transitions. [2021-12-19 19:15:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states and 459 transitions. [2021-12-19 19:15:21,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-12-19 19:15:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 303 states have (on average 1.5148514851485149) internal successors, (459), 302 states have internal predecessors, (459), 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) [2021-12-19 19:15:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 459 transitions. [2021-12-19 19:15:21,830 INFO L704 BuchiCegarLoop]: Abstraction has 303 states and 459 transitions. [2021-12-19 19:15:21,830 INFO L587 BuchiCegarLoop]: Abstraction has 303 states and 459 transitions. [2021-12-19 19:15:21,830 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-19 19:15:21,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 303 states and 459 transitions. [2021-12-19 19:15:21,831 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 159 [2021-12-19 19:15:21,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:21,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:21,834 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] [2021-12-19 19:15:21,834 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:21,834 INFO L791 eck$LassoCheckResult]: Stem: 3995#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 3900#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 3839#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 3840#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 3943#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 3944#L137-2 ~b0_req_up~0 := 0; 3933#L145 assume { :end_inline_update_b0 } true; 3934#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 3868#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 3869#L152-2 ~b1_req_up~0 := 0; 3976#L160 assume { :end_inline_update_b1 } true; 3974#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 3843#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 3844#L167-2 ~d0_req_up~0 := 0; 3806#L175 assume { :end_inline_update_d0 } true; 3807#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 3904#L182 assume ~d1_val~0 != ~d1_val_t~0;~d1_val~0 := ~d1_val_t~0;~d1_ev~0 := 0; 3854#L182-2 ~d1_req_up~0 := 0; 3855#L190 assume { :end_inline_update_d1 } true; 3942#L233-1 assume !(1 == ~z_req_up~0); 3950#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 3837#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 3838#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 3951#L321 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 3952#L321-2 assume !(0 == ~b1_ev~0); 3862#L326-1 assume !(0 == ~d0_ev~0); 3863#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 3816#L336-1 assume !(0 == ~z_ev~0); 3817#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 3999#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 3991#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 3930#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 3931#L390 assume !(0 != activate_threads_~tmp~1#1); 3977#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 3925#L354 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 3896#L354-2 assume !(1 == ~b1_ev~0); 3897#L359-1 assume !(1 == ~d0_ev~0); 3898#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 3899#L369-1 assume !(1 == ~z_ev~0); 3909#L374-1 assume { :end_inline_reset_delta_events } true; 3981#L432-2 assume !false; 3879#L433 [2021-12-19 19:15:21,837 INFO L793 eck$LassoCheckResult]: Loop: 3879#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 3808#L295 assume !false; 3809#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 3848#L268 assume !(0 == ~comp_m1_st~0);exists_runnable_thread_~__retres1~1#1 := 0; 3850#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 4061#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 4060#L290 assume !(0 != eval_~tmp___0~0#1); 3905#L311 assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2;assume { :begin_inline_update_channels } true; 3906#L212-3 assume !(1 == ~b0_req_up~0); 3955#L212-5 assume !(1 == ~b1_req_up~0); 3883#L219-3 assume !(1 == ~d0_req_up~0); 4047#L226-3 assume !(1 == ~d1_req_up~0); 4045#L233-3 assume !(1 == ~z_req_up~0); 4043#L240-3 assume { :end_inline_update_channels } true;start_simulation_~kernel_st~0#1 := 3;assume { :begin_inline_fire_delta_events } true; 4042#L321-3 assume !(0 == ~b0_ev~0); 4041#L321-5 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 4040#L326-3 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 4039#L331-3 assume !(0 == ~d1_ev~0); 4038#L336-3 assume 0 == ~z_ev~0;~z_ev~0 := 1; 4037#L341-3 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 4018#L107-1 assume !(1 == ~b0_ev~0); 3989#L111-1 assume 1 == ~b1_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 3865#L129-1 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 3901#L130-1 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 3812#L390-3 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 3813#L390-5 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 3856#L354-3 assume !(1 == ~b0_ev~0); 3872#L354-5 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 3984#L359-3 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 3972#L364-3 assume !(1 == ~d1_ev~0); 3968#L369-3 assume 1 == ~z_ev~0;~z_ev~0 := 2; 3910#L374-3 assume { :end_inline_reset_delta_events } true;assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret7#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1;assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 3911#L268-1 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 3958#L275-1 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 3894#L276-1 stop_simulation_#t~ret7#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret7#1;havoc stop_simulation_#t~ret7#1; 3829#L407 assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; 3830#L414 stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; 3987#L415 start_simulation_#t~ret8#1 := stop_simulation_#res#1;assume { :end_inline_stop_simulation } true;start_simulation_~tmp~3#1 := start_simulation_#t~ret8#1;havoc start_simulation_#t~ret8#1; 3960#L449 assume !(0 != start_simulation_~tmp~3#1); 3878#L432-2 assume !false; 3879#L433 [2021-12-19 19:15:21,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:21,838 INFO L85 PathProgramCache]: Analyzing trace with hash 969880732, now seen corresponding path program 1 times [2021-12-19 19:15:21,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:21,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461388906] [2021-12-19 19:15:21,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:21,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:21,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:21,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461388906] [2021-12-19 19:15:21,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461388906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:21,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:21,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:21,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238006053] [2021-12-19 19:15:21,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:21,858 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:21,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash 571541896, now seen corresponding path program 1 times [2021-12-19 19:15:21,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:21,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376398137] [2021-12-19 19:15:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:21,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:21,897 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:15:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:21,908 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:15:21,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-19 19:15:22,192 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 19:15:22,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 19:15:22,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 19:15:22,193 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 19:15:22,193 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 19:15:22,193 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:22,193 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 19:15:22,193 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 19:15:22,193 INFO L133 ssoRankerPreferences]: Filename of dumped script: bist_cell.cil.c_Iteration11_Loop [2021-12-19 19:15:22,193 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 19:15:22,193 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 19:15:22,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,430 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 19:15:22,431 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 19:15:22,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:22,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:22,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 19:15:22,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-19 19:15:22,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 19:15:22,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 19:15:22,456 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 19:15:22,456 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_stop_simulation_#t~ret7#1=0} Honda state: {ULTIMATE.start_stop_simulation_#t~ret7#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 19:15:22,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-19 19:15:22,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:22,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:22,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 19:15:22,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 19:15:22,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 19:15:22,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-19 19:15:22,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-19 19:15:22,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:22,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:22,508 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 19:15:22,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-19 19:15:22,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 19:15:22,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 19:15:22,555 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 19:15:22,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-19 19:15:22,572 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 19:15:22,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 19:15:22,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 19:15:22,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 19:15:22,572 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 19:15:22,572 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:22,572 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 19:15:22,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 19:15:22,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: bist_cell.cil.c_Iteration11_Loop [2021-12-19 19:15:22,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 19:15:22,572 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 19:15:22,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:15:22,792 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 19:15:22,792 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 19:15:22,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:22,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:22,793 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 19:15:22,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-19 19:15:22,801 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 19:15:22,807 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 19:15:22,807 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 19:15:22,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 19:15:22,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 19:15:22,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 19:15:22,808 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 19:15:22,808 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 19:15:22,818 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 19:15:22,820 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 19:15:22,820 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 19:15:22,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:15:22,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:15:22,821 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 19:15:22,823 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 19:15:22,824 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 19:15:22,824 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 19:15:22,824 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(~d0_ev~0) = -1*~d0_ev~0 + 1 Supporting invariants [] [2021-12-19 19:15:22,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-19 19:15:22,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-19 19:15:22,844 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 19:15:22,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:22,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-19 19:15:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:22,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 19:15:22,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 19:15:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:22,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 19:15:22,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 19:15:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:23,086 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-19 19:15:23,086 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 303 states and 459 transitions. cyclomatic complexity: 159 Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-19 19:15:23,104 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 303 states and 459 transitions. cyclomatic complexity: 159. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 810 states and 1251 transitions. Complement of second has 5 states. [2021-12-19 19:15:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 19:15:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-19 19:15:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2021-12-19 19:15:23,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 181 transitions. Stem has 41 letters. Loop has 40 letters. [2021-12-19 19:15:23,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 19:15:23,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 181 transitions. Stem has 81 letters. Loop has 40 letters. [2021-12-19 19:15:23,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 19:15:23,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 181 transitions. Stem has 41 letters. Loop has 80 letters. [2021-12-19 19:15:23,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 19:15:23,110 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 810 states and 1251 transitions. [2021-12-19 19:15:23,114 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 318 [2021-12-19 19:15:23,117 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 810 states to 810 states and 1251 transitions. [2021-12-19 19:15:23,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 378 [2021-12-19 19:15:23,117 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 384 [2021-12-19 19:15:23,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 810 states and 1251 transitions. [2021-12-19 19:15:23,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:23,118 INFO L681 BuchiCegarLoop]: Abstraction has 810 states and 1251 transitions. [2021-12-19 19:15:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states and 1251 transitions. [2021-12-19 19:15:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 804. [2021-12-19 19:15:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 804 states have (on average 1.5422885572139304) internal successors, (1240), 803 states have internal predecessors, (1240), 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) [2021-12-19 19:15:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1240 transitions. [2021-12-19 19:15:23,128 INFO L704 BuchiCegarLoop]: Abstraction has 804 states and 1240 transitions. [2021-12-19 19:15:23,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:23,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:23,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:23,129 INFO L87 Difference]: Start difference. First operand 804 states and 1240 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-12-19 19:15:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:23,143 INFO L93 Difference]: Finished difference Result 963 states and 1454 transitions. [2021-12-19 19:15:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:23,144 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 963 states and 1454 transitions. [2021-12-19 19:15:23,148 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 388 [2021-12-19 19:15:23,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 963 states to 963 states and 1454 transitions. [2021-12-19 19:15:23,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 448 [2021-12-19 19:15:23,152 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 448 [2021-12-19 19:15:23,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 963 states and 1454 transitions. [2021-12-19 19:15:23,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:23,152 INFO L681 BuchiCegarLoop]: Abstraction has 963 states and 1454 transitions. [2021-12-19 19:15:23,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states and 1454 transitions. [2021-12-19 19:15:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-12-19 19:15:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 963 states have (on average 1.509865005192108) internal successors, (1454), 962 states have internal predecessors, (1454), 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) [2021-12-19 19:15:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1454 transitions. [2021-12-19 19:15:23,163 INFO L704 BuchiCegarLoop]: Abstraction has 963 states and 1454 transitions. [2021-12-19 19:15:23,163 INFO L587 BuchiCegarLoop]: Abstraction has 963 states and 1454 transitions. [2021-12-19 19:15:23,163 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-12-19 19:15:23,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 963 states and 1454 transitions. [2021-12-19 19:15:23,166 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 388 [2021-12-19 19:15:23,166 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:23,166 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:23,167 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] [2021-12-19 19:15:23,167 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:23,167 INFO L791 eck$LassoCheckResult]: Stem: 7154#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 7047#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 6982#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 6983#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 7091#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 7092#L137-2 ~b0_req_up~0 := 0; 7081#L145 assume { :end_inline_update_b0 } true; 7082#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 7014#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 7015#L152-2 ~b1_req_up~0 := 0; 7129#L160 assume { :end_inline_update_b1 } true; 7127#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 6987#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 6988#L167-2 ~d0_req_up~0 := 0; 6950#L175 assume { :end_inline_update_d0 } true; 6951#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 7051#L182 assume ~d1_val~0 != ~d1_val_t~0;~d1_val~0 := ~d1_val_t~0;~d1_ev~0 := 0; 6998#L182-2 ~d1_req_up~0 := 0; 6999#L190 assume { :end_inline_update_d1 } true; 7090#L233-1 assume !(1 == ~z_req_up~0); 7098#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 6980#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 6981#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 7099#L321 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 7100#L321-2 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 7166#L326-1 assume !(0 == ~d0_ev~0); 7009#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 6960#L336-1 assume !(0 == ~z_ev~0); 6961#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 7158#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 7149#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 7078#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 7079#L390 assume !(0 != activate_threads_~tmp~1#1); 7130#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 7072#L354 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 7043#L354-2 assume !(1 == ~b1_ev~0); 7044#L359-1 assume !(1 == ~d0_ev~0); 7045#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 7046#L369-1 assume !(1 == ~z_ev~0); 7056#L374-1 assume { :end_inline_reset_delta_events } true; 7134#L432-2 assume !false; 7325#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 6952#L295 [2021-12-19 19:15:23,167 INFO L793 eck$LassoCheckResult]: Loop: 6952#L295 assume !false; 6953#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 7128#L268 assume !(0 == ~comp_m1_st~0);exists_runnable_thread_~__retres1~1#1 := 0; 7713#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 7708#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 7706#L290 assume 0 != eval_~tmp___0~0#1; 7152#L290-1 assume !(0 == ~comp_m1_st~0); 6952#L295 [2021-12-19 19:15:23,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1995676522, now seen corresponding path program 1 times [2021-12-19 19:15:23,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871198791] [2021-12-19 19:15:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:23,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:23,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871198791] [2021-12-19 19:15:23,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871198791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:23,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:23,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:23,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579718679] [2021-12-19 19:15:23,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:23,186 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:23,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash 831114558, now seen corresponding path program 1 times [2021-12-19 19:15:23,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722043706] [2021-12-19 19:15:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:23,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:23,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722043706] [2021-12-19 19:15:23,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722043706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:23,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:23,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:15:23,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733241906] [2021-12-19 19:15:23,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:23,214 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:23,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:23,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 19:15:23,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 19:15:23,214 INFO L87 Difference]: Start difference. First operand 963 states and 1454 transitions. cyclomatic complexity: 500 Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:15:23,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:23,247 INFO L93 Difference]: Finished difference Result 1053 states and 1544 transitions. [2021-12-19 19:15:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 19:15:23,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1053 states and 1544 transitions. [2021-12-19 19:15:23,252 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 428 [2021-12-19 19:15:23,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1053 states to 1053 states and 1544 transitions. [2021-12-19 19:15:23,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 488 [2021-12-19 19:15:23,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 488 [2021-12-19 19:15:23,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1053 states and 1544 transitions. [2021-12-19 19:15:23,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:23,256 INFO L681 BuchiCegarLoop]: Abstraction has 1053 states and 1544 transitions. [2021-12-19 19:15:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states and 1544 transitions. [2021-12-19 19:15:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 963. [2021-12-19 19:15:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 963 states have (on average 1.5005192107995846) internal successors, (1445), 962 states have internal predecessors, (1445), 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) [2021-12-19 19:15:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1445 transitions. [2021-12-19 19:15:23,265 INFO L704 BuchiCegarLoop]: Abstraction has 963 states and 1445 transitions. [2021-12-19 19:15:23,265 INFO L587 BuchiCegarLoop]: Abstraction has 963 states and 1445 transitions. [2021-12-19 19:15:23,265 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-12-19 19:15:23,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 963 states and 1445 transitions. [2021-12-19 19:15:23,268 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 388 [2021-12-19 19:15:23,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:23,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:23,268 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] [2021-12-19 19:15:23,268 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:23,268 INFO L791 eck$LassoCheckResult]: Stem: 9189#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 9078#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 9014#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 9015#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 9120#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 9121#L137-2 ~b0_req_up~0 := 0; 9111#L145 assume { :end_inline_update_b0 } true; 9112#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 9045#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 9046#L152-2 ~b1_req_up~0 := 0; 9162#L160 assume { :end_inline_update_b1 } true; 9159#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 9019#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 9020#L167-2 ~d0_req_up~0 := 0; 8982#L175 assume { :end_inline_update_d0 } true; 8983#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 9082#L182 assume ~d1_val~0 != ~d1_val_t~0;~d1_val~0 := ~d1_val_t~0;~d1_ev~0 := 0; 9030#L182-2 ~d1_req_up~0 := 0; 9031#L190 assume { :end_inline_update_d1 } true; 9119#L233-1 assume !(1 == ~z_req_up~0); 9127#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 9012#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 9013#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 9128#L321 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 9129#L321-2 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 9202#L326-1 assume !(0 == ~d0_ev~0); 9040#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 8992#L336-1 assume !(0 == ~z_ev~0); 8993#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 9194#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 9185#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 9108#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 9109#L390 assume !(0 != activate_threads_~tmp~1#1); 9163#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 9103#L354 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 9074#L354-2 assume !(1 == ~b1_ev~0); 9075#L359-1 assume !(1 == ~d0_ev~0); 9076#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 9077#L369-1 assume !(1 == ~z_ev~0); 9087#L374-1 assume { :end_inline_reset_delta_events } true; 9168#L432-2 assume !false; 9608#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 9521#L295 [2021-12-19 19:15:23,268 INFO L793 eck$LassoCheckResult]: Loop: 9521#L295 assume !false; 9426#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 9420#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 9179#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 8978#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 8979#L290 assume 0 != eval_~tmp___0~0#1; 9195#L290-1 assume !(0 == ~comp_m1_st~0); 9521#L295 [2021-12-19 19:15:23,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1995676522, now seen corresponding path program 2 times [2021-12-19 19:15:23,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175869427] [2021-12-19 19:15:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:23,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:23,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175869427] [2021-12-19 19:15:23,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175869427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:23,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:23,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:23,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634342108] [2021-12-19 19:15:23,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:23,280 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:23,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,281 INFO L85 PathProgramCache]: Analyzing trace with hash 829267516, now seen corresponding path program 1 times [2021-12-19 19:15:23,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898491183] [2021-12-19 19:15:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:23,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:23,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898491183] [2021-12-19 19:15:23,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898491183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:23,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:23,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 19:15:23,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497562919] [2021-12-19 19:15:23,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:23,297 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:15:23,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:23,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:23,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:23,297 INFO L87 Difference]: Start difference. First operand 963 states and 1445 transitions. cyclomatic complexity: 491 Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:15:23,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:23,312 INFO L93 Difference]: Finished difference Result 1188 states and 1749 transitions. [2021-12-19 19:15:23,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:23,313 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1188 states and 1749 transitions. [2021-12-19 19:15:23,318 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 468 [2021-12-19 19:15:23,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1188 states to 1188 states and 1749 transitions. [2021-12-19 19:15:23,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 563 [2021-12-19 19:15:23,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 563 [2021-12-19 19:15:23,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1188 states and 1749 transitions. [2021-12-19 19:15:23,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:23,322 INFO L681 BuchiCegarLoop]: Abstraction has 1188 states and 1749 transitions. [2021-12-19 19:15:23,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states and 1749 transitions. [2021-12-19 19:15:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2021-12-19 19:15:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1188 states have (on average 1.4722222222222223) internal successors, (1749), 1187 states have internal predecessors, (1749), 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) [2021-12-19 19:15:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1749 transitions. [2021-12-19 19:15:23,336 INFO L704 BuchiCegarLoop]: Abstraction has 1188 states and 1749 transitions. [2021-12-19 19:15:23,336 INFO L587 BuchiCegarLoop]: Abstraction has 1188 states and 1749 transitions. [2021-12-19 19:15:23,336 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-12-19 19:15:23,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1188 states and 1749 transitions. [2021-12-19 19:15:23,339 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 468 [2021-12-19 19:15:23,339 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:23,340 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:23,343 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] [2021-12-19 19:15:23,343 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:23,343 INFO L791 eck$LassoCheckResult]: Stem: 11349#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 11237#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 11175#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 11176#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 11283#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 11284#L137-2 ~b0_req_up~0 := 0; 11273#L145 assume { :end_inline_update_b0 } true; 11274#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 11203#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 11204#L152-2 ~b1_req_up~0 := 0; 11323#L160 assume { :end_inline_update_b1 } true; 11317#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 11179#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 11180#L167-2 ~d0_req_up~0 := 0; 11140#L175 assume { :end_inline_update_d0 } true; 11141#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 11241#L182 assume ~d1_val~0 != ~d1_val_t~0;~d1_val~0 := ~d1_val_t~0;~d1_ev~0 := 0; 11188#L182-2 ~d1_req_up~0 := 0; 11189#L190 assume { :end_inline_update_d1 } true; 11282#L233-1 assume !(1 == ~z_req_up~0); 11290#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 11172#L255 assume 1 == ~comp_m1_i~0;~comp_m1_st~0 := 0; 11173#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 11909#L321 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 11910#L321-2 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 11914#L326-1 assume !(0 == ~d0_ev~0); 11913#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 11912#L336-1 assume !(0 == ~z_ev~0); 11911#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 11901#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 11900#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 11899#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 11898#L390 assume !(0 != activate_threads_~tmp~1#1); 11325#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 11897#L354 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 11895#L354-2 assume !(1 == ~b1_ev~0); 11894#L359-1 assume !(1 == ~d0_ev~0); 11893#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 11892#L369-1 assume !(1 == ~z_ev~0); 11891#L374-1 assume { :end_inline_reset_delta_events } true; 11889#L432-2 assume !false; 11793#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 11636#L295 [2021-12-19 19:15:23,344 INFO L793 eck$LassoCheckResult]: Loop: 11636#L295 assume !false; 11644#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 11643#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 11381#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 11640#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 11638#L290 assume 0 != eval_~tmp___0~0#1; 11637#L290-1 assume 0 == ~comp_m1_st~0;eval_~tmp~0#1 := eval_#t~nondet5#1;havoc eval_#t~nondet5#1; 11635#L299 assume !(0 != eval_~tmp~0#1); 11636#L295 [2021-12-19 19:15:23,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1572974696, now seen corresponding path program 1 times [2021-12-19 19:15:23,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025473332] [2021-12-19 19:15:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:23,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:23,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025473332] [2021-12-19 19:15:23,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025473332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:23,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:23,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 19:15:23,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227504246] [2021-12-19 19:15:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:23,368 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:23,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,369 INFO L85 PathProgramCache]: Analyzing trace with hash -62512628, now seen corresponding path program 1 times [2021-12-19 19:15:23,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292632008] [2021-12-19 19:15:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,372 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:15:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,376 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:15:23,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:23,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 19:15:23,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 19:15:23,399 INFO L87 Difference]: Start difference. First operand 1188 states and 1749 transitions. cyclomatic complexity: 570 Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:15:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:23,427 INFO L93 Difference]: Finished difference Result 1165 states and 1712 transitions. [2021-12-19 19:15:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 19:15:23,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1165 states and 1712 transitions. [2021-12-19 19:15:23,433 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 468 [2021-12-19 19:15:23,438 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1165 states to 1165 states and 1712 transitions. [2021-12-19 19:15:23,438 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 540 [2021-12-19 19:15:23,439 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 540 [2021-12-19 19:15:23,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1165 states and 1712 transitions. [2021-12-19 19:15:23,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:23,439 INFO L681 BuchiCegarLoop]: Abstraction has 1165 states and 1712 transitions. [2021-12-19 19:15:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states and 1712 transitions. [2021-12-19 19:15:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2021-12-19 19:15:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1165 states have (on average 1.4695278969957082) internal successors, (1712), 1164 states have internal predecessors, (1712), 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) [2021-12-19 19:15:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1712 transitions. [2021-12-19 19:15:23,452 INFO L704 BuchiCegarLoop]: Abstraction has 1165 states and 1712 transitions. [2021-12-19 19:15:23,452 INFO L587 BuchiCegarLoop]: Abstraction has 1165 states and 1712 transitions. [2021-12-19 19:15:23,453 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-12-19 19:15:23,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1165 states and 1712 transitions. [2021-12-19 19:15:23,456 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 468 [2021-12-19 19:15:23,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:23,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:23,457 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] [2021-12-19 19:15:23,457 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:23,457 INFO L791 eck$LassoCheckResult]: Stem: 13723#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 13601#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 13536#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 13537#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 13646#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 13647#L137-2 ~b0_req_up~0 := 0; 13636#L145 assume { :end_inline_update_b0 } true; 13637#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 13566#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 13567#L152-2 ~b1_req_up~0 := 0; 13682#L160 assume { :end_inline_update_b1 } true; 13680#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 13540#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 13541#L167-2 ~d0_req_up~0 := 0; 13502#L175 assume { :end_inline_update_d0 } true; 13503#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 13602#L182 assume ~d1_val~0 != ~d1_val_t~0;~d1_val~0 := ~d1_val_t~0;~d1_ev~0 := 0; 13545#L182-2 ~d1_req_up~0 := 0; 13546#L190 assume { :end_inline_update_d1 } true; 13645#L233-1 assume !(1 == ~z_req_up~0); 13653#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 13530#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 13531#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 13654#L321 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 13655#L321-2 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 13554#L326-1 assume !(0 == ~d0_ev~0); 13555#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 13508#L336-1 assume !(0 == ~z_ev~0); 13509#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 13730#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 13716#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 13717#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 13686#L390 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 13687#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 13628#L354 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 13594#L354-2 assume !(1 == ~b1_ev~0); 13595#L359-1 assume !(1 == ~d0_ev~0); 13599#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 13600#L369-1 assume !(1 == ~z_ev~0); 13606#L374-1 assume { :end_inline_reset_delta_events } true; 14219#L432-2 assume !false; 14220#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 14050#L295 [2021-12-19 19:15:23,457 INFO L793 eck$LassoCheckResult]: Loop: 14050#L295 assume !false; 14055#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 14054#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 13946#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 14053#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 14052#L290 assume 0 != eval_~tmp___0~0#1; 14051#L290-1 assume 0 == ~comp_m1_st~0;eval_~tmp~0#1 := eval_#t~nondet5#1;havoc eval_#t~nondet5#1; 14049#L299 assume !(0 != eval_~tmp~0#1); 14050#L295 [2021-12-19 19:15:23,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1906263764, now seen corresponding path program 1 times [2021-12-19 19:15:23,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029991777] [2021-12-19 19:15:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:23,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:23,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029991777] [2021-12-19 19:15:23,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029991777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:23,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:23,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:23,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586518946] [2021-12-19 19:15:23,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:23,480 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:23,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,481 INFO L85 PathProgramCache]: Analyzing trace with hash -62512628, now seen corresponding path program 2 times [2021-12-19 19:15:23,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964413191] [2021-12-19 19:15:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,484 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:15:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,491 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:15:23,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:23,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:23,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:23,515 INFO L87 Difference]: Start difference. First operand 1165 states and 1712 transitions. cyclomatic complexity: 556 Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:15:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:23,530 INFO L93 Difference]: Finished difference Result 1252 states and 1830 transitions. [2021-12-19 19:15:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:23,530 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1252 states and 1830 transitions. [2021-12-19 19:15:23,535 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 525 [2021-12-19 19:15:23,538 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1252 states to 1252 states and 1830 transitions. [2021-12-19 19:15:23,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 597 [2021-12-19 19:15:23,539 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 597 [2021-12-19 19:15:23,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1252 states and 1830 transitions. [2021-12-19 19:15:23,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:23,539 INFO L681 BuchiCegarLoop]: Abstraction has 1252 states and 1830 transitions. [2021-12-19 19:15:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states and 1830 transitions. [2021-12-19 19:15:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2021-12-19 19:15:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1252 states have (on average 1.461661341853035) internal successors, (1830), 1251 states have internal predecessors, (1830), 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) [2021-12-19 19:15:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1830 transitions. [2021-12-19 19:15:23,553 INFO L704 BuchiCegarLoop]: Abstraction has 1252 states and 1830 transitions. [2021-12-19 19:15:23,553 INFO L587 BuchiCegarLoop]: Abstraction has 1252 states and 1830 transitions. [2021-12-19 19:15:23,553 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-12-19 19:15:23,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1252 states and 1830 transitions. [2021-12-19 19:15:23,556 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 525 [2021-12-19 19:15:23,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:23,556 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:23,557 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] [2021-12-19 19:15:23,557 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:23,557 INFO L791 eck$LassoCheckResult]: Stem: 16145#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 16026#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 15960#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 15961#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 16073#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 16074#L137-2 ~b0_req_up~0 := 0; 16064#L145 assume { :end_inline_update_b0 } true; 16065#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 15992#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 15993#L152-2 ~b1_req_up~0 := 0; 16109#L160 assume { :end_inline_update_b1 } true; 16108#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 15965#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 15966#L167-2 ~d0_req_up~0 := 0; 15925#L175 assume { :end_inline_update_d0 } true; 15926#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 16027#L182 assume ~d1_val~0 != ~d1_val_t~0;~d1_val~0 := ~d1_val_t~0;~d1_ev~0 := 0; 15970#L182-2 ~d1_req_up~0 := 0; 15971#L190 assume { :end_inline_update_d1 } true; 16072#L233-1 assume !(1 == ~z_req_up~0); 16080#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 15954#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 15955#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 16081#L321 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 16082#L321-2 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 15980#L326-1 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 15981#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 15931#L336-1 assume !(0 == ~z_ev~0); 15932#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 16149#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 16137#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 16138#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 16114#L390 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 16115#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 16144#L354 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 16020#L354-2 assume !(1 == ~b1_ev~0); 16021#L359-1 assume !(1 == ~d0_ev~0); 16024#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 16025#L369-1 assume !(1 == ~z_ev~0); 16119#L374-1 assume { :end_inline_reset_delta_events } true; 16120#L432-2 assume !false; 16784#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 16619#L295 [2021-12-19 19:15:23,557 INFO L793 eck$LassoCheckResult]: Loop: 16619#L295 assume !false; 16624#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 16623#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 16416#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 16622#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 16621#L290 assume 0 != eval_~tmp___0~0#1; 16620#L290-1 assume 0 == ~comp_m1_st~0;eval_~tmp~0#1 := eval_#t~nondet5#1;havoc eval_#t~nondet5#1; 16618#L299 assume !(0 != eval_~tmp~0#1); 16619#L295 [2021-12-19 19:15:23,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -317915862, now seen corresponding path program 1 times [2021-12-19 19:15:23,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157562963] [2021-12-19 19:15:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:23,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:23,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157562963] [2021-12-19 19:15:23,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157562963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:23,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:23,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:23,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230476789] [2021-12-19 19:15:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:23,577 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:23,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,577 INFO L85 PathProgramCache]: Analyzing trace with hash -62512628, now seen corresponding path program 3 times [2021-12-19 19:15:23,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460462221] [2021-12-19 19:15:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,582 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:15:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,586 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:15:23,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:23,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:23,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:23,613 INFO L87 Difference]: Start difference. First operand 1252 states and 1830 transitions. cyclomatic complexity: 587 Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:15:23,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:23,627 INFO L93 Difference]: Finished difference Result 1473 states and 2140 transitions. [2021-12-19 19:15:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:23,627 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1473 states and 2140 transitions. [2021-12-19 19:15:23,633 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 612 [2021-12-19 19:15:23,637 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1473 states to 1473 states and 2140 transitions. [2021-12-19 19:15:23,637 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 682 [2021-12-19 19:15:23,638 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 682 [2021-12-19 19:15:23,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1473 states and 2140 transitions. [2021-12-19 19:15:23,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:23,638 INFO L681 BuchiCegarLoop]: Abstraction has 1473 states and 2140 transitions. [2021-12-19 19:15:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states and 2140 transitions. [2021-12-19 19:15:23,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1473. [2021-12-19 19:15:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1473 states have (on average 1.4528173794976238) internal successors, (2140), 1472 states have internal predecessors, (2140), 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) [2021-12-19 19:15:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2140 transitions. [2021-12-19 19:15:23,655 INFO L704 BuchiCegarLoop]: Abstraction has 1473 states and 2140 transitions. [2021-12-19 19:15:23,655 INFO L587 BuchiCegarLoop]: Abstraction has 1473 states and 2140 transitions. [2021-12-19 19:15:23,655 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-12-19 19:15:23,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1473 states and 2140 transitions. [2021-12-19 19:15:23,660 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 612 [2021-12-19 19:15:23,660 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:23,660 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:23,660 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] [2021-12-19 19:15:23,660 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:23,661 INFO L791 eck$LassoCheckResult]: Stem: 18895#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 18754#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 18691#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 18692#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 18802#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 18803#L137-2 ~b0_req_up~0 := 0; 18793#L145 assume { :end_inline_update_b0 } true; 18794#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 18720#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 18721#L152-2 ~b1_req_up~0 := 0; 18849#L160 assume { :end_inline_update_b1 } true; 18842#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 18695#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 18696#L167-2 ~d0_req_up~0 := 0; 18656#L175 assume { :end_inline_update_d0 } true; 18657#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 18755#L182 assume ~d1_val~0 != ~d1_val_t~0;~d1_val~0 := ~d1_val_t~0;~d1_ev~0 := 0; 18699#L182-2 ~d1_req_up~0 := 0; 18700#L190 assume { :end_inline_update_d1 } true; 18801#L233-1 assume !(1 == ~z_req_up~0); 18809#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 18689#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 18690#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 18810#L321 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 18811#L321-2 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 18712#L326-1 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 18713#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 18662#L336-1 assume !(0 == ~z_ev~0); 18663#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 18899#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 18886#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 18887#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 18852#L390 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 18853#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 18894#L354 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 18747#L354-2 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 18748#L359-1 assume !(1 == ~d0_ev~0); 18752#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 18753#L369-1 assume !(1 == ~z_ev~0); 18865#L374-1 assume { :end_inline_reset_delta_events } true; 18866#L432-2 assume !false; 19046#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 19047#L295 [2021-12-19 19:15:23,661 INFO L793 eck$LassoCheckResult]: Loop: 19047#L295 assume !false; 19866#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 19865#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 19833#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 19864#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 19863#L290 assume 0 != eval_~tmp___0~0#1; 19862#L290-1 assume 0 == ~comp_m1_st~0;eval_~tmp~0#1 := eval_#t~nondet5#1;havoc eval_#t~nondet5#1; 19861#L299 assume !(0 != eval_~tmp~0#1); 19047#L295 [2021-12-19 19:15:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2092923224, now seen corresponding path program 1 times [2021-12-19 19:15:23,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189518191] [2021-12-19 19:15:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:15:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:15:23,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:15:23,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189518191] [2021-12-19 19:15:23,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189518191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:15:23,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:15:23,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:15:23,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615569215] [2021-12-19 19:15:23,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:15:23,675 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:15:23,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,675 INFO L85 PathProgramCache]: Analyzing trace with hash -62512628, now seen corresponding path program 4 times [2021-12-19 19:15:23,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219278568] [2021-12-19 19:15:23,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,678 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:15:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,682 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:15:23,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:15:23,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:15:23,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:15:23,705 INFO L87 Difference]: Start difference. First operand 1473 states and 2140 transitions. cyclomatic complexity: 676 Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:15:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:15:23,719 INFO L93 Difference]: Finished difference Result 1878 states and 2694 transitions. [2021-12-19 19:15:23,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:15:23,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1878 states and 2694 transitions. [2021-12-19 19:15:23,746 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 696 [2021-12-19 19:15:23,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1878 states to 1747 states and 2497 transitions. [2021-12-19 19:15:23,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 768 [2021-12-19 19:15:23,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 768 [2021-12-19 19:15:23,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1747 states and 2497 transitions. [2021-12-19 19:15:23,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 19:15:23,752 INFO L681 BuchiCegarLoop]: Abstraction has 1747 states and 2497 transitions. [2021-12-19 19:15:23,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states and 2497 transitions. [2021-12-19 19:15:23,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1747. [2021-12-19 19:15:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1747 states have (on average 1.4293073840870063) internal successors, (2497), 1746 states have internal predecessors, (2497), 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) [2021-12-19 19:15:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2497 transitions. [2021-12-19 19:15:23,767 INFO L704 BuchiCegarLoop]: Abstraction has 1747 states and 2497 transitions. [2021-12-19 19:15:23,767 INFO L587 BuchiCegarLoop]: Abstraction has 1747 states and 2497 transitions. [2021-12-19 19:15:23,768 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-12-19 19:15:23,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1747 states and 2497 transitions. [2021-12-19 19:15:23,771 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 696 [2021-12-19 19:15:23,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:15:23,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:15:23,771 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] [2021-12-19 19:15:23,771 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:15:23,771 INFO L791 eck$LassoCheckResult]: Stem: 22252#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(16, 2);call #Ultimate.allocInit(12, 3);~b0_val~0 := 0;~b0_val_t~0 := 0;~b0_ev~0 := 0;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_val_t~0 := 0;~b1_ev~0 := 0;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_val_t~0 := 0;~d0_ev~0 := 0;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_val_t~0 := 0;~d1_ev~0 := 0;~d1_req_up~0 := 0;~z_val~0 := 0;~z_val_t~0 := 0;~z_ev~0 := 0;~z_req_up~0 := 0;~comp_m1_st~0 := 0;~comp_m1_i~0 := 0; 22112#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~__retres1~2#1;havoc main_~__retres1~2#1;assume { :begin_inline_init_model } true;~b0_val~0 := 0;~b0_ev~0 := 2;~b0_req_up~0 := 0;~b1_val~0 := 0;~b1_ev~0 := 2;~b1_req_up~0 := 0;~d0_val~0 := 0;~d0_ev~0 := 2;~d0_req_up~0 := 0;~d1_val~0 := 0;~d1_ev~0 := 2;~d1_req_up~0 := 0;~z_val~0 := 0;~z_ev~0 := 2;~z_req_up~0 := 0;~b0_val_t~0 := 1;~b0_req_up~0 := 1;~b1_val_t~0 := 1;~b1_req_up~0 := 1;~d0_val_t~0 := 1;~d0_req_up~0 := 1;~d1_val_t~0 := 1;~d1_req_up~0 := 1;~comp_m1_i~0 := 0; 22047#L490 assume { :end_inline_init_model } true;assume { :begin_inline_start_simulation } true;havoc start_simulation_#t~ret8#1, start_simulation_~kernel_st~0#1, start_simulation_~tmp~3#1;havoc start_simulation_~kernel_st~0#1;havoc start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 0;assume { :begin_inline_update_channels } true; 22048#L212 assume 1 == ~b0_req_up~0;assume { :begin_inline_update_b0 } true; 22163#L137 assume ~b0_val~0 != ~b0_val_t~0;~b0_val~0 := ~b0_val_t~0;~b0_ev~0 := 0; 22164#L137-2 ~b0_req_up~0 := 0; 22152#L145 assume { :end_inline_update_b0 } true; 22153#L212-2 assume 1 == ~b1_req_up~0;assume { :begin_inline_update_b1 } true; 22077#L152 assume ~b1_val~0 != ~b1_val_t~0;~b1_val~0 := ~b1_val_t~0;~b1_ev~0 := 0; 22078#L152-2 ~b1_req_up~0 := 0; 22211#L160 assume { :end_inline_update_b1 } true; 22204#L219-1 assume 1 == ~d0_req_up~0;assume { :begin_inline_update_d0 } true; 22051#L167 assume ~d0_val~0 != ~d0_val_t~0;~d0_val~0 := ~d0_val_t~0;~d0_ev~0 := 0; 22052#L167-2 ~d0_req_up~0 := 0; 22013#L175 assume { :end_inline_update_d0 } true; 22014#L226-1 assume 1 == ~d1_req_up~0;assume { :begin_inline_update_d1 } true; 22117#L182 assume ~d1_val~0 != ~d1_val_t~0;~d1_val~0 := ~d1_val_t~0;~d1_ev~0 := 0; 22059#L182-2 ~d1_req_up~0 := 0; 22060#L190 assume { :end_inline_update_d1 } true; 22162#L233-1 assume !(1 == ~z_req_up~0); 22170#L240-1 assume { :end_inline_update_channels } true;assume { :begin_inline_init_threads } true; 22045#L255 assume !(1 == ~comp_m1_i~0);~comp_m1_st~0 := 2; 22046#L255-2 assume { :end_inline_init_threads } true;assume { :begin_inline_fire_delta_events } true; 22171#L321 assume 0 == ~b0_ev~0;~b0_ev~0 := 1; 22172#L321-2 assume 0 == ~b1_ev~0;~b1_ev~0 := 1; 22069#L326-1 assume 0 == ~d0_ev~0;~d0_ev~0 := 1; 22070#L331-1 assume 0 == ~d1_ev~0;~d1_ev~0 := 1; 22025#L336-1 assume !(0 == ~z_ev~0); 22026#L341-1 assume { :end_inline_fire_delta_events } true;assume { :begin_inline_activate_threads } true;havoc activate_threads_#t~ret6#1, activate_threads_~tmp~1#1;havoc activate_threads_~tmp~1#1;assume { :begin_inline_is_method1_triggered } true;havoc is_method1_triggered_#res#1;havoc is_method1_triggered_~__retres1~0#1;havoc is_method1_triggered_~__retres1~0#1; 22258#L107 assume 1 == ~b0_ev~0;is_method1_triggered_~__retres1~0#1 := 1; 22243#L129 is_method1_triggered_#res#1 := is_method1_triggered_~__retres1~0#1; 22244#L130 activate_threads_#t~ret6#1 := is_method1_triggered_#res#1;assume { :end_inline_is_method1_triggered } true;activate_threads_~tmp~1#1 := activate_threads_#t~ret6#1;havoc activate_threads_#t~ret6#1; 22214#L390 assume 0 != activate_threads_~tmp~1#1;~comp_m1_st~0 := 0; 22215#L390-2 assume { :end_inline_activate_threads } true;assume { :begin_inline_reset_delta_events } true; 22143#L354 assume 1 == ~b0_ev~0;~b0_ev~0 := 2; 22144#L354-2 assume 1 == ~b1_ev~0;~b1_ev~0 := 2; 22212#L359-1 assume 1 == ~d0_ev~0;~d0_ev~0 := 2; 22213#L364-1 assume 1 == ~d1_ev~0;~d1_ev~0 := 2; 22122#L369-1 assume !(1 == ~z_ev~0); 22123#L374-1 assume { :end_inline_reset_delta_events } true; 22440#L432-2 assume !false; 23361#L433 start_simulation_~kernel_st~0#1 := 1;assume { :begin_inline_eval } true;havoc eval_#t~ret4#1, eval_#t~nondet5#1, eval_~tmp~0#1, eval_~tmp___0~0#1;havoc eval_~tmp~0#1;havoc eval_~tmp___0~0#1; 22429#L295 [2021-12-19 19:15:23,771 INFO L793 eck$LassoCheckResult]: Loop: 22429#L295 assume !false; 22430#L286 assume { :begin_inline_exists_runnable_thread } true;havoc exists_runnable_thread_#res#1;havoc exists_runnable_thread_~__retres1~1#1;havoc exists_runnable_thread_~__retres1~1#1; 22422#L268 assume 0 == ~comp_m1_st~0;exists_runnable_thread_~__retres1~1#1 := 1; 22423#L275 exists_runnable_thread_#res#1 := exists_runnable_thread_~__retres1~1#1; 22419#L276 eval_#t~ret4#1 := exists_runnable_thread_#res#1;assume { :end_inline_exists_runnable_thread } true;eval_~tmp___0~0#1 := eval_#t~ret4#1;havoc eval_#t~ret4#1; 22420#L290 assume 0 != eval_~tmp___0~0#1; 22415#L290-1 assume 0 == ~comp_m1_st~0;eval_~tmp~0#1 := eval_#t~nondet5#1;havoc eval_#t~nondet5#1; 22416#L299 assume !(0 != eval_~tmp~0#1); 22429#L295 [2021-12-19 19:15:23,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2144785770, now seen corresponding path program 1 times [2021-12-19 19:15:23,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708981287] [2021-12-19 19:15:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,776 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:15:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,782 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:15:23,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,782 INFO L85 PathProgramCache]: Analyzing trace with hash -62512628, now seen corresponding path program 5 times [2021-12-19 19:15:23,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063194979] [2021-12-19 19:15:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,784 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:15:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,786 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:15:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:15:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash 109674101, now seen corresponding path program 1 times [2021-12-19 19:15:23,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:15:23,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610322413] [2021-12-19 19:15:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:15:23,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:15:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,790 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:15:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:15:23,796 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:15:24,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 07:15:24 BoogieIcfgContainer [2021-12-19 19:15:24,526 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 19:15:24,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 19:15:24,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 19:15:24,526 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 19:15:24,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:15:18" (3/4) ... [2021-12-19 19:15:24,528 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 19:15:24,554 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 19:15:24,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 19:15:24,555 INFO L158 Benchmark]: Toolchain (without parser) took 6284.36ms. Allocated memory was 88.1MB in the beginning and 195.0MB in the end (delta: 107.0MB). Free memory was 55.6MB in the beginning and 138.6MB in the end (delta: -83.0MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2021-12-19 19:15:24,555 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory was 43.9MB in the beginning and 43.9MB in the end (delta: 43.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 19:15:24,555 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.06ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 55.3MB in the beginning and 93.6MB in the end (delta: -38.3MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-12-19 19:15:24,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.94ms. Allocated memory is still 119.5MB. Free memory was 93.6MB in the beginning and 91.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:15:24,555 INFO L158 Benchmark]: Boogie Preprocessor took 19.88ms. Allocated memory is still 119.5MB. Free memory was 91.0MB in the beginning and 89.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:15:24,556 INFO L158 Benchmark]: RCFGBuilder took 440.73ms. Allocated memory is still 119.5MB. Free memory was 89.4MB in the beginning and 71.7MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-19 19:15:24,556 INFO L158 Benchmark]: BuchiAutomizer took 5547.05ms. Allocated memory was 119.5MB in the beginning and 195.0MB in the end (delta: 75.5MB). Free memory was 71.7MB in the beginning and 142.8MB in the end (delta: -71.1MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. [2021-12-19 19:15:24,556 INFO L158 Benchmark]: Witness Printer took 28.39ms. Allocated memory is still 195.0MB. Free memory was 142.8MB in the beginning and 138.6MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:15:24,557 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory was 43.9MB in the beginning and 43.9MB in the end (delta: 43.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.06ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 55.3MB in the beginning and 93.6MB in the end (delta: -38.3MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.94ms. Allocated memory is still 119.5MB. Free memory was 93.6MB in the beginning and 91.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.88ms. Allocated memory is still 119.5MB. Free memory was 91.0MB in the beginning and 89.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.73ms. Allocated memory is still 119.5MB. Free memory was 89.4MB in the beginning and 71.7MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 5547.05ms. Allocated memory was 119.5MB in the beginning and 195.0MB in the end (delta: 75.5MB). Free memory was 71.7MB in the beginning and 142.8MB in the end (delta: -71.1MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. * Witness Printer took 28.39ms. Allocated memory is still 195.0MB. Free memory was 142.8MB in the beginning and 138.6MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 19 terminating modules (17 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * b0_ev + 1 and consists of 3 locations. One deterministic module has affine ranking function -1 * d0_ev + 1 and consists of 3 locations. 17 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 1747 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.5s and 18 iterations. TraceHistogramMax:1. Analysis of lassos took 3.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 8. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 130 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 1747 states and ocurred in iteration 17. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1085 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1083 mSDsluCounter, 7434 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4054 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 260 IncrementalHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 3380 mSDtfsCounter, 260 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN4 SILU0 SILI11 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital95 mio100 ax100 hnf100 lsp11 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq209 hnf86 smp100 dnf189 smp63 tf108 neg92 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 285]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {b1_val_t=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@694354bf=0, d0_val=1, NULL=1, tmp=1, __retres1=0, z_val=0, b0_val_t=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@684931a9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48ba735=0, d1_ev=2, comp_m1_i=0, tmp=0, b1_val=1, d1_req_up=0, z_val_t=0, b1_req_up=0, d0_ev=2, __retres1=1, z_ev=2, b1_ev=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b5a7a14=0, comp_m1_st=0, tmp=0, b0_req_up=0, tmp___0=1, \result=0, z_req_up=0, d1_val=1, b0_ev=2, NULL=0, d0_val_t=1, kernel_st=1, d1_val_t=1, __retres1=1, b0_val=1, \result=1, d0_req_up=0, \result=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 285]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L24] int b0_val ; [L25] int b0_val_t ; [L26] int b0_ev ; [L27] int b0_req_up ; [L28] int b1_val ; [L29] int b1_val_t ; [L30] int b1_ev ; [L31] int b1_req_up ; [L32] int d0_val ; [L33] int d0_val_t ; [L34] int d0_ev ; [L35] int d0_req_up ; [L36] int d1_val ; [L37] int d1_val_t ; [L38] int d1_ev ; [L39] int d1_req_up ; [L40] int z_val ; [L41] int z_val_t ; [L42] int z_ev ; [L43] int z_req_up ; [L44] int comp_m1_st ; [L45] int comp_m1_i ; [L494] int __retres1 ; [L498] CALL init_model() [L465] b0_val = 0 [L466] b0_ev = 2 [L467] b0_req_up = 0 [L468] b1_val = 0 [L469] b1_ev = 2 [L470] b1_req_up = 0 [L471] d0_val = 0 [L472] d0_ev = 2 [L473] d0_req_up = 0 [L474] d1_val = 0 [L475] d1_ev = 2 [L476] d1_req_up = 0 [L477] z_val = 0 [L478] z_ev = 2 [L479] z_req_up = 0 [L480] b0_val_t = 1 [L481] b0_req_up = 1 [L482] b1_val_t = 1 [L483] b1_req_up = 1 [L484] d0_val_t = 1 [L485] d0_req_up = 1 [L486] d1_val_t = 1 [L487] d1_req_up = 1 [L488] comp_m1_i = 0 [L498] RET init_model() [L499] CALL start_simulation() [L419] int kernel_st ; [L420] int tmp ; [L424] kernel_st = 0 [L425] CALL update_channels() [L212] COND TRUE (int )b0_req_up == 1 [L214] CALL update_b0() [L137] COND TRUE (int )b0_val != (int )b0_val_t [L138] b0_val = b0_val_t [L139] b0_ev = 0 [L143] b0_req_up = 0 [L214] RET update_b0() [L219] COND TRUE (int )b1_req_up == 1 [L221] CALL update_b1() [L152] COND TRUE (int )b1_val != (int )b1_val_t [L153] b1_val = b1_val_t [L154] b1_ev = 0 [L158] b1_req_up = 0 [L221] RET update_b1() [L226] COND TRUE (int )d0_req_up == 1 [L228] CALL update_d0() [L167] COND TRUE (int )d0_val != (int )d0_val_t [L168] d0_val = d0_val_t [L169] d0_ev = 0 [L173] d0_req_up = 0 [L228] RET update_d0() [L233] COND TRUE (int )d1_req_up == 1 [L235] CALL update_d1() [L182] COND TRUE (int )d1_val != (int )d1_val_t [L183] d1_val = d1_val_t [L184] d1_ev = 0 [L188] d1_req_up = 0 [L235] RET update_d1() [L240] COND FALSE !((int )z_req_up == 1) [L425] RET update_channels() [L426] CALL init_threads() [L255] COND FALSE !((int )comp_m1_i == 1) [L258] comp_m1_st = 2 [L426] RET init_threads() [L427] CALL fire_delta_events() [L321] COND TRUE (int )b0_ev == 0 [L322] b0_ev = 1 [L326] COND TRUE (int )b1_ev == 0 [L327] b1_ev = 1 [L331] COND TRUE (int )d0_ev == 0 [L332] d0_ev = 1 [L336] COND TRUE (int )d1_ev == 0 [L337] d1_ev = 1 [L341] COND FALSE !((int )z_ev == 0) [L427] RET fire_delta_events() [L428] CALL activate_threads() [L384] int tmp ; [L388] CALL, EXPR is_method1_triggered() [L104] int __retres1 ; [L107] COND TRUE (int )b0_ev == 1 [L108] __retres1 = 1 [L130] return (__retres1); [L388] RET, EXPR is_method1_triggered() [L388] tmp = is_method1_triggered() [L390] COND TRUE \read(tmp) [L391] comp_m1_st = 0 [L428] RET activate_threads() [L429] CALL reset_delta_events() [L354] COND TRUE (int )b0_ev == 1 [L355] b0_ev = 2 [L359] COND TRUE (int )b1_ev == 1 [L360] b1_ev = 2 [L364] COND TRUE (int )d0_ev == 1 [L365] d0_ev = 2 [L369] COND TRUE (int )d1_ev == 1 [L370] d1_ev = 2 [L374] COND FALSE !((int )z_ev == 1) [L429] RET reset_delta_events() [L432] COND TRUE 1 [L435] kernel_st = 1 [L436] CALL eval() [L280] int tmp ; [L281] int tmp___0 ; Loop: [L285] COND TRUE 1 [L288] CALL, EXPR exists_runnable_thread() [L265] int __retres1 ; [L268] COND TRUE (int )comp_m1_st == 0 [L269] __retres1 = 1 [L276] return (__retres1); [L288] RET, EXPR exists_runnable_thread() [L288] tmp___0 = exists_runnable_thread() [L290] COND TRUE \read(tmp___0) [L295] COND TRUE (int )comp_m1_st == 0 [L297] tmp = __VERIFIER_nondet_int() [L299] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-19 19:15:24,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)