./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer --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 1276fee36ba29a1512d9d1fdc76a927ecdbe9874 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:56:48,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:56:48,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:56:48,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:56:48,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:56:48,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:56:48,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:56:48,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:56:48,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:56:48,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:56:48,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:56:48,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:56:48,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:56:48,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:56:48,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:56:48,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:56:48,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:56:48,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:56:48,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:56:48,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:56:48,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:56:48,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:56:48,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:56:48,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:56:48,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:56:48,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:56:48,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:56:48,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:56:48,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:56:48,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:56:48,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:56:48,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:56:48,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:56:48,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:56:48,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:56:48,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:56:48,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:56:48,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:56:48,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:56:48,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:56:48,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:56:48,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:56:48,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:56:48,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:56:48,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:56:48,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:56:48,756 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:56:48,757 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:56:48,757 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:56:48,757 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:56:48,758 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:56:48,758 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:56:48,760 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:56:48,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:56:48,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:56:48,761 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:56:48,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:56:48,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:56:48,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:56:48,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:56:48,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:56:48,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:56:48,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:56:48,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:56:48,765 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:56:48,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:56:48,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:56:48,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:56:48,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:56:48,767 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:56:48,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:56:48,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:56:48,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:56:48,770 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:56:48,772 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:56:48,772 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:/tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1276fee36ba29a1512d9d1fdc76a927ecdbe9874 [2020-11-29 23:56:49,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:56:49,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:56:49,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:56:49,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:56:49,246 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:56:49,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c [2020-11-29 23:56:49,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/data/02bd1b942/97a269ffb8f44766a76fc15955f7509a/FLAGd0769524f [2020-11-29 23:56:49,972 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:56:49,972 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c [2020-11-29 23:56:49,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/data/02bd1b942/97a269ffb8f44766a76fc15955f7509a/FLAGd0769524f [2020-11-29 23:56:50,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/data/02bd1b942/97a269ffb8f44766a76fc15955f7509a [2020-11-29 23:56:50,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:56:50,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:56:50,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:50,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:56:50,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:56:50,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:50,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f0ed72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50, skipping insertion in model container [2020-11-29 23:56:50,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:50,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:56:50,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:56:50,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:50,857 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:56:50,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:50,990 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:56:50,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50 WrapperNode [2020-11-29 23:56:50,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:50,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:50,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:56:50,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:56:51,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:51,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:51,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:51,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:56:51,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:56:51,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:56:51,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:51,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:51,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:51,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:51,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:51,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:51,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (1/1) ... [2020-11-29 23:56:51,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:56:51,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:56:51,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:56:51,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:56:51,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:56:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:56:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:56:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:56:51,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:56:52,390 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:56:52,390 INFO L298 CfgBuilder]: Removed 27 assume(true) statements. [2020-11-29 23:56:52,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:52 BoogieIcfgContainer [2020-11-29 23:56:52,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:56:52,394 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:56:52,395 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:56:52,399 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:56:52,400 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:56:52,400 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:56:50" (1/3) ... [2020-11-29 23:56:52,402 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e6106d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:56:52, skipping insertion in model container [2020-11-29 23:56:52,402 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:56:52,403 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:50" (2/3) ... [2020-11-29 23:56:52,403 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e6106d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:56:52, skipping insertion in model container [2020-11-29 23:56:52,403 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:56:52,403 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:52" (3/3) ... [2020-11-29 23:56:52,405 INFO L373 chiAutomizerObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c [2020-11-29 23:56:52,506 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:56:52,506 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:56:52,507 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:56:52,507 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:56:52,507 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:56:52,507 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:56:52,507 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:56:52,508 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:56:52,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states. [2020-11-29 23:56:52,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 60 [2020-11-29 23:56:52,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:52,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:52,588 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:52,588 INFO L853 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] [2020-11-29 23:56:52,588 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:56:52,588 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states. [2020-11-29 23:56:52,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 60 [2020-11-29 23:56:52,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:52,599 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:52,601 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:52,601 INFO L853 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] [2020-11-29 23:56:52,610 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(33);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0; 11#L-1true havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~ret38, main_#t~ret39, main_#t~post40, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~id3~0 := main_#t~nondet22;havoc main_#t~nondet22;~st3~0 := main_#t~nondet23;havoc main_#t~nondet23;~send3~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode3~0 := main_#t~nondet25;havoc main_#t~nondet25;~id4~0 := main_#t~nondet26;havoc main_#t~nondet26;~st4~0 := main_#t~nondet27;havoc main_#t~nondet27;~send4~0 := main_#t~nondet28;havoc main_#t~nondet28;~mode4~0 := main_#t~nondet29;havoc main_#t~nondet29;~id5~0 := main_#t~nondet30;havoc main_#t~nondet30;~st5~0 := main_#t~nondet31;havoc main_#t~nondet31;~send5~0 := main_#t~nondet32;havoc main_#t~nondet32;~mode5~0 := main_#t~nondet33;havoc main_#t~nondet33;~id6~0 := main_#t~nondet34;havoc main_#t~nondet34;~st6~0 := main_#t~nondet35;havoc main_#t~nondet35;~send6~0 := main_#t~nondet36;havoc main_#t~nondet36;~mode6~0 := main_#t~nondet37;havoc main_#t~nondet37;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 98#L228true assume !(0 == ~r1~0);init_~tmp~0 := 0; 96#L228-1true init_#res := init_~tmp~0; 40#L389true main_#t~ret38 := init_#res;main_~i2~0 := main_#t~ret38;havoc main_#t~ret38;assume_abort_if_not_#in~cond := main_~i2~0;havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; 79#L22true assume !(0 == assume_abort_if_not_~cond); 14#L21true ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0 := 0; 109#L467-2true [2020-11-29 23:56:52,612 INFO L796 eck$LassoCheckResult]: Loop: 109#L467-2true assume !!(main_~i2~0 < 12);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 41#L78true assume !(0 != ~mode1~0 % 256); 18#L92true assume !(~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0);node1_#t~ite7 := ~p1_new~0; 17#L92-2true ~p1_new~0 := (if node1_#t~ite7 % 256 <= 127 then node1_#t~ite7 % 256 else node1_#t~ite7 % 256 - 256);havoc node1_#t~ite7;~mode1~0 := 1; 39#L78-2true havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 89#L104true assume !(0 != ~mode2~0 % 256); 23#L117true assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite8 := ~send2~0; 10#L117-2true ~p2_new~0 := (if node2_#t~ite8 % 256 <= 127 then node2_#t~ite8 % 256 else node2_#t~ite8 % 256 - 256);havoc node2_#t~ite8;~mode2~0 := 1; 86#L104-2true havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 94#L129true assume !(0 != ~mode3~0 % 256); 16#L142true assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite9 := ~send3~0; 15#L142-2true ~p3_new~0 := (if node3_#t~ite9 % 256 <= 127 then node3_#t~ite9 % 256 else node3_#t~ite9 % 256 - 256);havoc node3_#t~ite9;~mode3~0 := 1; 91#L129-2true havoc node4_#t~ite10, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 69#L154true assume !(0 != ~mode4~0 % 256); 101#L167true assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite10 := ~send4~0; 100#L167-2true ~p4_new~0 := (if node4_#t~ite10 % 256 <= 127 then node4_#t~ite10 % 256 else node4_#t~ite10 % 256 - 256);havoc node4_#t~ite10;~mode4~0 := 1; 80#L154-2true havoc node5_#t~ite11, node5_~m5~0;havoc node5_~m5~0;node5_~m5~0 := ~nomsg~0; 57#L179true assume !(0 != ~mode5~0 % 256); 106#L192true assume ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0;node5_#t~ite11 := ~send5~0; 90#L192-2true ~p5_new~0 := (if node5_#t~ite11 % 256 <= 127 then node5_#t~ite11 % 256 else node5_#t~ite11 % 256 - 256);havoc node5_#t~ite11;~mode5~0 := 1; 54#L179-2true havoc node6_#t~ite12, node6_~m6~0;havoc node6_~m6~0;node6_~m6~0 := ~nomsg~0; 62#L204true assume !(0 != ~mode6~0 % 256); 97#L217true assume ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0;node6_#t~ite12 := ~send6~0; 95#L217-2true ~p6_new~0 := (if node6_#t~ite12 % 256 <= 127 then node6_#t~ite12 % 256 else node6_#t~ite12 % 256 - 256);havoc node6_#t~ite12;~mode6~0 := 1; 58#L204-2true ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 46#L397true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1);check_~tmp~1 := 0; 48#L397-1true check_#res := check_~tmp~1; 19#L417true main_#t~ret39 := check_#res;main_~c1~0 := main_#t~ret39;havoc main_#t~ret39;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 105#L500true assume !(0 == assert_~arg % 256); 99#L495true main_#t~post40 := main_~i2~0;main_~i2~0 := 1 + main_#t~post40;havoc main_#t~post40; 109#L467-2true [2020-11-29 23:56:52,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:52,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2030119858, now seen corresponding path program 1 times [2020-11-29 23:56:52,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:52,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521503265] [2020-11-29 23:56:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:52,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521503265] [2020-11-29 23:56:52,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:52,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:56:52,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889515199] [2020-11-29 23:56:52,989 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:56:52,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:52,995 INFO L82 PathProgramCache]: Analyzing trace with hash 32251521, now seen corresponding path program 1 times [2020-11-29 23:56:52,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:52,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500808507] [2020-11-29 23:56:52,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:53,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500808507] [2020-11-29 23:56:53,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:53,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:56:53,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626094333] [2020-11-29 23:56:53,231 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:56:53,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:53,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:53,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:53,259 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 5 states. [2020-11-29 23:56:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:53,481 INFO L93 Difference]: Finished difference Result 112 states and 186 transitions. [2020-11-29 23:56:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:53,485 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 186 transitions. [2020-11-29 23:56:53,505 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 58 [2020-11-29 23:56:53,516 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 104 states and 139 transitions. [2020-11-29 23:56:53,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2020-11-29 23:56:53,523 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2020-11-29 23:56:53,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 139 transitions. [2020-11-29 23:56:53,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:56:53,527 INFO L691 BuchiCegarLoop]: Abstraction has 104 states and 139 transitions. [2020-11-29 23:56:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 139 transitions. [2020-11-29 23:56:53,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-11-29 23:56:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-29 23:56:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 139 transitions. [2020-11-29 23:56:53,587 INFO L714 BuchiCegarLoop]: Abstraction has 104 states and 139 transitions. [2020-11-29 23:56:53,588 INFO L594 BuchiCegarLoop]: Abstraction has 104 states and 139 transitions. [2020-11-29 23:56:53,588 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:56:53,588 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 139 transitions. [2020-11-29 23:56:53,595 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 58 [2020-11-29 23:56:53,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:53,617 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:53,627 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:53,627 INFO L853 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] [2020-11-29 23:56:53,636 INFO L794 eck$LassoCheckResult]: Stem: 335#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(33);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0; 258#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~ret38, main_#t~ret39, main_#t~post40, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~id3~0 := main_#t~nondet22;havoc main_#t~nondet22;~st3~0 := main_#t~nondet23;havoc main_#t~nondet23;~send3~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode3~0 := main_#t~nondet25;havoc main_#t~nondet25;~id4~0 := main_#t~nondet26;havoc main_#t~nondet26;~st4~0 := main_#t~nondet27;havoc main_#t~nondet27;~send4~0 := main_#t~nondet28;havoc main_#t~nondet28;~mode4~0 := main_#t~nondet29;havoc main_#t~nondet29;~id5~0 := main_#t~nondet30;havoc main_#t~nondet30;~st5~0 := main_#t~nondet31;havoc main_#t~nondet31;~send5~0 := main_#t~nondet32;havoc main_#t~nondet32;~mode5~0 := main_#t~nondet33;havoc main_#t~nondet33;~id6~0 := main_#t~nondet34;havoc main_#t~nondet34;~st6~0 := main_#t~nondet35;havoc main_#t~nondet35;~send6~0 := main_#t~nondet36;havoc main_#t~nondet36;~mode6~0 := main_#t~nondet37;havoc main_#t~nondet37;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 259#L228 assume 0 == ~r1~0; 310#L229 assume ~id1~0 >= 0; 248#L230 assume 0 == ~st1~0; 249#L231 assume ~send1~0 == ~id1~0; 292#L232 assume 0 == ~mode1~0 % 256; 293#L233 assume ~id2~0 >= 0; 333#L234 assume 0 == ~st2~0; 298#L235 assume ~send2~0 == ~id2~0; 299#L236 assume 0 == ~mode2~0 % 256; 328#L237 assume ~id3~0 >= 0; 283#L238 assume 0 == ~st3~0; 284#L239 assume ~send3~0 == ~id3~0; 311#L240 assume 0 == ~mode3~0 % 256; 250#L241 assume ~id4~0 >= 0; 251#L242 assume 0 == ~st4~0; 294#L243 assume ~send4~0 == ~id4~0; 295#L244 assume 0 == ~mode4~0 % 256; 334#L245 assume ~id5~0 >= 0; 300#L246 assume 0 == ~st5~0; 301#L247 assume ~send5~0 == ~id5~0; 329#L248 assume 0 == ~mode5~0 % 256; 285#L249 assume ~id6~0 >= 0; 286#L250 assume 0 == ~st6~0; 312#L251 assume ~send6~0 == ~id6~0; 252#L252 assume 0 == ~mode6~0 % 256; 253#L253 assume ~id1~0 != ~id2~0; 296#L254 assume ~id1~0 != ~id3~0; 260#L255 assume ~id1~0 != ~id4~0; 261#L256 assume ~id1~0 != ~id5~0; 302#L257 assume ~id1~0 != ~id6~0; 303#L258 assume ~id2~0 != ~id3~0; 330#L259 assume ~id2~0 != ~id4~0; 287#L260 assume ~id2~0 != ~id5~0; 288#L261 assume ~id2~0 != ~id6~0; 313#L262 assume ~id3~0 != ~id4~0; 254#L263 assume ~id3~0 != ~id5~0; 255#L264 assume ~id3~0 != ~id6~0; 297#L265 assume ~id4~0 != ~id5~0; 262#L266 assume ~id4~0 != ~id6~0; 263#L267 assume ~id5~0 != ~id6~0;init_~tmp~0 := 1; 336#L228-1 init_#res := init_~tmp~0; 305#L389 main_#t~ret38 := init_#res;main_~i2~0 := main_#t~ret38;havoc main_#t~ret38;assume_abort_if_not_#in~cond := main_~i2~0;havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; 306#L22 assume !(0 == assume_abort_if_not_~cond); 264#L21 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0 := 0; 265#L467-2 [2020-11-29 23:56:53,637 INFO L796 eck$LassoCheckResult]: Loop: 265#L467-2 assume !!(main_~i2~0 < 12);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 307#L78 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p6_old~0;~p6_old~0 := ~nomsg~0; 308#L82 assume !(node1_~m1~0 != ~nomsg~0); 317#L82-1 ~mode1~0 := 0; 270#L78-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 304#L104 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 339#L107 assume !(node2_~m2~0 != ~nomsg~0); 290#L107-1 ~mode2~0 := 0; 257#L104-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 338#L129 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 337#L132 assume !(node3_~m3~0 != ~nomsg~0); 277#L132-1 ~mode3~0 := 0; 267#L129-2 havoc node4_#t~ite10, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 331#L154 assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 323#L157 assume !(node4_~m4~0 != ~nomsg~0); 279#L157-1 ~mode4~0 := 0; 322#L154-2 havoc node5_#t~ite11, node5_~m5~0;havoc node5_~m5~0;node5_~m5~0 := ~nomsg~0; 324#L179 assume !(0 != ~mode5~0 % 256); 325#L192 assume ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0;node5_#t~ite11 := ~send5~0; 340#L192-2 ~p5_new~0 := (if node5_#t~ite11 % 256 <= 127 then node5_#t~ite11 % 256 else node5_#t~ite11 % 256 - 256);havoc node5_#t~ite11;~mode5~0 := 1; 320#L179-2 havoc node6_#t~ite12, node6_~m6~0;havoc node6_~m6~0;node6_~m6~0 := ~nomsg~0; 321#L204 assume 0 != ~mode6~0 % 256;node6_~m6~0 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 309#L207 assume !(node6_~m6~0 != ~nomsg~0); 246#L207-1 ~mode6~0 := 0; 319#L204-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 314#L397 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1);check_~tmp~1 := 0; 275#L397-1 check_#res := check_~tmp~1; 272#L417 main_#t~ret39 := check_#res;main_~c1~0 := main_#t~ret39;havoc main_#t~ret39;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 273#L500 assume !(0 == assert_~arg % 256); 342#L495 main_#t~post40 := main_~i2~0;main_~i2~0 := 1 + main_#t~post40;havoc main_#t~post40; 265#L467-2 [2020-11-29 23:56:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:53,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1716035805, now seen corresponding path program 1 times [2020-11-29 23:56:53,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:53,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955803330] [2020-11-29 23:56:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:53,715 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:53,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:53,841 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:56:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:53,843 INFO L82 PathProgramCache]: Analyzing trace with hash 50102389, now seen corresponding path program 1 times [2020-11-29 23:56:53,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:53,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223987850] [2020-11-29 23:56:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:53,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223987850] [2020-11-29 23:56:53,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:53,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:56:53,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592605361] [2020-11-29 23:56:53,979 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:56:53,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:53,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:53,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:53,980 INFO L87 Difference]: Start difference. First operand 104 states and 139 transitions. cyclomatic complexity: 36 Second operand 5 states. [2020-11-29 23:56:54,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:54,075 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2020-11-29 23:56:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:54,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 141 transitions. [2020-11-29 23:56:54,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 58 [2020-11-29 23:56:54,082 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 104 states and 136 transitions. [2020-11-29 23:56:54,089 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2020-11-29 23:56:54,089 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2020-11-29 23:56:54,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 136 transitions. [2020-11-29 23:56:54,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:56:54,093 INFO L691 BuchiCegarLoop]: Abstraction has 104 states and 136 transitions. [2020-11-29 23:56:54,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 136 transitions. [2020-11-29 23:56:54,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-11-29 23:56:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-29 23:56:54,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 136 transitions. [2020-11-29 23:56:54,105 INFO L714 BuchiCegarLoop]: Abstraction has 104 states and 136 transitions. [2020-11-29 23:56:54,105 INFO L594 BuchiCegarLoop]: Abstraction has 104 states and 136 transitions. [2020-11-29 23:56:54,105 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:56:54,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 136 transitions. [2020-11-29 23:56:54,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 58 [2020-11-29 23:56:54,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:54,110 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:54,114 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:54,115 INFO L853 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] [2020-11-29 23:56:54,115 INFO L794 eck$LassoCheckResult]: Stem: 558#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(33);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0; 481#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~ret38, main_#t~ret39, main_#t~post40, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~id3~0 := main_#t~nondet22;havoc main_#t~nondet22;~st3~0 := main_#t~nondet23;havoc main_#t~nondet23;~send3~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode3~0 := main_#t~nondet25;havoc main_#t~nondet25;~id4~0 := main_#t~nondet26;havoc main_#t~nondet26;~st4~0 := main_#t~nondet27;havoc main_#t~nondet27;~send4~0 := main_#t~nondet28;havoc main_#t~nondet28;~mode4~0 := main_#t~nondet29;havoc main_#t~nondet29;~id5~0 := main_#t~nondet30;havoc main_#t~nondet30;~st5~0 := main_#t~nondet31;havoc main_#t~nondet31;~send5~0 := main_#t~nondet32;havoc main_#t~nondet32;~mode5~0 := main_#t~nondet33;havoc main_#t~nondet33;~id6~0 := main_#t~nondet34;havoc main_#t~nondet34;~st6~0 := main_#t~nondet35;havoc main_#t~nondet35;~send6~0 := main_#t~nondet36;havoc main_#t~nondet36;~mode6~0 := main_#t~nondet37;havoc main_#t~nondet37;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 482#L228 assume 0 == ~r1~0; 533#L229 assume ~id1~0 >= 0; 471#L230 assume 0 == ~st1~0; 472#L231 assume ~send1~0 == ~id1~0; 515#L232 assume 0 == ~mode1~0 % 256; 516#L233 assume ~id2~0 >= 0; 556#L234 assume 0 == ~st2~0; 521#L235 assume ~send2~0 == ~id2~0; 522#L236 assume 0 == ~mode2~0 % 256; 551#L237 assume ~id3~0 >= 0; 506#L238 assume 0 == ~st3~0; 507#L239 assume ~send3~0 == ~id3~0; 534#L240 assume 0 == ~mode3~0 % 256; 473#L241 assume ~id4~0 >= 0; 474#L242 assume 0 == ~st4~0; 517#L243 assume ~send4~0 == ~id4~0; 518#L244 assume 0 == ~mode4~0 % 256; 557#L245 assume ~id5~0 >= 0; 523#L246 assume 0 == ~st5~0; 524#L247 assume ~send5~0 == ~id5~0; 552#L248 assume 0 == ~mode5~0 % 256; 508#L249 assume ~id6~0 >= 0; 509#L250 assume 0 == ~st6~0; 535#L251 assume ~send6~0 == ~id6~0; 475#L252 assume 0 == ~mode6~0 % 256; 476#L253 assume ~id1~0 != ~id2~0; 519#L254 assume ~id1~0 != ~id3~0; 483#L255 assume ~id1~0 != ~id4~0; 484#L256 assume ~id1~0 != ~id5~0; 525#L257 assume ~id1~0 != ~id6~0; 526#L258 assume ~id2~0 != ~id3~0; 553#L259 assume ~id2~0 != ~id4~0; 510#L260 assume ~id2~0 != ~id5~0; 511#L261 assume ~id2~0 != ~id6~0; 536#L262 assume ~id3~0 != ~id4~0; 477#L263 assume ~id3~0 != ~id5~0; 478#L264 assume ~id3~0 != ~id6~0; 520#L265 assume ~id4~0 != ~id5~0; 485#L266 assume ~id4~0 != ~id6~0; 486#L267 assume ~id5~0 != ~id6~0;init_~tmp~0 := 1; 559#L228-1 init_#res := init_~tmp~0; 528#L389 main_#t~ret38 := init_#res;main_~i2~0 := main_#t~ret38;havoc main_#t~ret38;assume_abort_if_not_#in~cond := main_~i2~0;havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; 529#L22 assume !(0 == assume_abort_if_not_~cond); 487#L21 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0 := 0; 488#L467-2 [2020-11-29 23:56:54,116 INFO L796 eck$LassoCheckResult]: Loop: 488#L467-2 assume !!(main_~i2~0 < 12);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 530#L78 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p6_old~0;~p6_old~0 := ~nomsg~0; 531#L82 assume !(node1_~m1~0 != ~nomsg~0); 540#L82-1 ~mode1~0 := 0; 493#L78-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 527#L104 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 562#L107 assume !(node2_~m2~0 != ~nomsg~0); 513#L107-1 ~mode2~0 := 0; 480#L104-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 561#L129 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 560#L132 assume !(node3_~m3~0 != ~nomsg~0); 500#L132-1 ~mode3~0 := 0; 490#L129-2 havoc node4_#t~ite10, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 554#L154 assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 546#L157 assume !(node4_~m4~0 != ~nomsg~0); 502#L157-1 ~mode4~0 := 0; 545#L154-2 havoc node5_#t~ite11, node5_~m5~0;havoc node5_~m5~0;node5_~m5~0 := ~nomsg~0; 547#L179 assume !(0 != ~mode5~0 % 256); 548#L192 assume ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0;node5_#t~ite11 := ~send5~0; 563#L192-2 ~p5_new~0 := (if node5_#t~ite11 % 256 <= 127 then node5_#t~ite11 % 256 else node5_#t~ite11 % 256 - 256);havoc node5_#t~ite11;~mode5~0 := 1; 543#L179-2 havoc node6_#t~ite12, node6_~m6~0;havoc node6_~m6~0;node6_~m6~0 := ~nomsg~0; 544#L204 assume 0 != ~mode6~0 % 256;node6_~m6~0 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 532#L207 assume !(node6_~m6~0 != ~nomsg~0); 469#L207-1 ~mode6~0 := 0; 542#L204-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 537#L397 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1; 465#L398 assume ~r1~0 >= 6; 466#L402 assume ~r1~0 < 6;check_~tmp~1 := 1; 498#L397-1 check_#res := check_~tmp~1; 495#L417 main_#t~ret39 := check_#res;main_~c1~0 := main_#t~ret39;havoc main_#t~ret39;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 496#L500 assume !(0 == assert_~arg % 256); 565#L495 main_#t~post40 := main_~i2~0;main_~i2~0 := 1 + main_#t~post40;havoc main_#t~post40; 488#L467-2 [2020-11-29 23:56:54,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:54,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1716035805, now seen corresponding path program 2 times [2020-11-29 23:56:54,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:54,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145278793] [2020-11-29 23:56:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:54,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:54,253 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:54,294 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:56:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:54,296 INFO L82 PathProgramCache]: Analyzing trace with hash -512121723, now seen corresponding path program 1 times [2020-11-29 23:56:54,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:54,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949299821] [2020-11-29 23:56:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:54,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949299821] [2020-11-29 23:56:54,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:54,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:54,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071115739] [2020-11-29 23:56:54,346 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:56:54,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:54,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:56:54,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:54,348 INFO L87 Difference]: Start difference. First operand 104 states and 136 transitions. cyclomatic complexity: 33 Second operand 3 states. [2020-11-29 23:56:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:54,416 INFO L93 Difference]: Finished difference Result 156 states and 215 transitions. [2020-11-29 23:56:54,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:56:54,420 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 215 transitions. [2020-11-29 23:56:54,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 110 [2020-11-29 23:56:54,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 156 states and 215 transitions. [2020-11-29 23:56:54,425 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 156 [2020-11-29 23:56:54,426 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 156 [2020-11-29 23:56:54,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 156 states and 215 transitions. [2020-11-29 23:56:54,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:56:54,428 INFO L691 BuchiCegarLoop]: Abstraction has 156 states and 215 transitions. [2020-11-29 23:56:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states and 215 transitions. [2020-11-29 23:56:54,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-11-29 23:56:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-29 23:56:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 215 transitions. [2020-11-29 23:56:54,446 INFO L714 BuchiCegarLoop]: Abstraction has 156 states and 215 transitions. [2020-11-29 23:56:54,446 INFO L594 BuchiCegarLoop]: Abstraction has 156 states and 215 transitions. [2020-11-29 23:56:54,447 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:56:54,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 156 states and 215 transitions. [2020-11-29 23:56:54,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 110 [2020-11-29 23:56:54,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:54,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:54,451 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:54,451 INFO L853 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] [2020-11-29 23:56:54,451 INFO L794 eck$LassoCheckResult]: Stem: 824#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(33);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0; 746#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~ret38, main_#t~ret39, main_#t~post40, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~id3~0 := main_#t~nondet22;havoc main_#t~nondet22;~st3~0 := main_#t~nondet23;havoc main_#t~nondet23;~send3~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode3~0 := main_#t~nondet25;havoc main_#t~nondet25;~id4~0 := main_#t~nondet26;havoc main_#t~nondet26;~st4~0 := main_#t~nondet27;havoc main_#t~nondet27;~send4~0 := main_#t~nondet28;havoc main_#t~nondet28;~mode4~0 := main_#t~nondet29;havoc main_#t~nondet29;~id5~0 := main_#t~nondet30;havoc main_#t~nondet30;~st5~0 := main_#t~nondet31;havoc main_#t~nondet31;~send5~0 := main_#t~nondet32;havoc main_#t~nondet32;~mode5~0 := main_#t~nondet33;havoc main_#t~nondet33;~id6~0 := main_#t~nondet34;havoc main_#t~nondet34;~st6~0 := main_#t~nondet35;havoc main_#t~nondet35;~send6~0 := main_#t~nondet36;havoc main_#t~nondet36;~mode6~0 := main_#t~nondet37;havoc main_#t~nondet37;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 747#L228 assume 0 == ~r1~0; 798#L229 assume ~id1~0 >= 0; 736#L230 assume 0 == ~st1~0; 737#L231 assume ~send1~0 == ~id1~0; 780#L232 assume 0 == ~mode1~0 % 256; 781#L233 assume ~id2~0 >= 0; 822#L234 assume 0 == ~st2~0; 786#L235 assume ~send2~0 == ~id2~0; 787#L236 assume 0 == ~mode2~0 % 256; 817#L237 assume ~id3~0 >= 0; 771#L238 assume 0 == ~st3~0; 772#L239 assume ~send3~0 == ~id3~0; 799#L240 assume 0 == ~mode3~0 % 256; 738#L241 assume ~id4~0 >= 0; 739#L242 assume 0 == ~st4~0; 782#L243 assume ~send4~0 == ~id4~0; 783#L244 assume 0 == ~mode4~0 % 256; 823#L245 assume ~id5~0 >= 0; 788#L246 assume 0 == ~st5~0; 789#L247 assume ~send5~0 == ~id5~0; 818#L248 assume 0 == ~mode5~0 % 256; 773#L249 assume ~id6~0 >= 0; 774#L250 assume 0 == ~st6~0; 800#L251 assume ~send6~0 == ~id6~0; 740#L252 assume 0 == ~mode6~0 % 256; 741#L253 assume ~id1~0 != ~id2~0; 784#L254 assume ~id1~0 != ~id3~0; 748#L255 assume ~id1~0 != ~id4~0; 749#L256 assume ~id1~0 != ~id5~0; 790#L257 assume ~id1~0 != ~id6~0; 791#L258 assume ~id2~0 != ~id3~0; 819#L259 assume ~id2~0 != ~id4~0; 775#L260 assume ~id2~0 != ~id5~0; 776#L261 assume ~id2~0 != ~id6~0; 801#L262 assume ~id3~0 != ~id4~0; 742#L263 assume ~id3~0 != ~id5~0; 743#L264 assume ~id3~0 != ~id6~0; 785#L265 assume ~id4~0 != ~id5~0; 750#L266 assume ~id4~0 != ~id6~0; 751#L267 assume ~id5~0 != ~id6~0;init_~tmp~0 := 1; 825#L228-1 init_#res := init_~tmp~0; 793#L389 main_#t~ret38 := init_#res;main_~i2~0 := main_#t~ret38;havoc main_#t~ret38;assume_abort_if_not_#in~cond := main_~i2~0;havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; 794#L22 assume !(0 == assume_abort_if_not_~cond); 752#L21 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0 := 0; 753#L467-2 [2020-11-29 23:56:54,452 INFO L796 eck$LassoCheckResult]: Loop: 753#L467-2 assume !!(main_~i2~0 < 12);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 878#L78 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p6_old~0;~p6_old~0 := ~nomsg~0; 796#L82 assume !(node1_~m1~0 != ~nomsg~0); 805#L82-1 ~mode1~0 := 0; 829#L78-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 875#L104 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 833#L107 assume !(node2_~m2~0 != ~nomsg~0); 778#L107-1 ~mode2~0 := 0; 872#L104-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 870#L129 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 869#L132 assume !(node3_~m3~0 != ~nomsg~0); 866#L132-1 ~mode3~0 := 0; 864#L129-2 havoc node4_#t~ite10, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 863#L154 assume !(0 != ~mode4~0 % 256); 859#L167 assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite10 := ~send4~0; 857#L167-2 ~p4_new~0 := (if node4_#t~ite10 % 256 <= 127 then node4_#t~ite10 % 256 else node4_#t~ite10 % 256 - 256);havoc node4_#t~ite10;~mode4~0 := 1; 856#L154-2 havoc node5_#t~ite11, node5_~m5~0;havoc node5_~m5~0;node5_~m5~0 := ~nomsg~0; 812#L179 assume !(0 != ~mode5~0 % 256); 813#L192 assume ~send5~0 != ~nomsg~0 && ~p5_new~0 == ~nomsg~0;node5_#t~ite11 := ~send5~0; 831#L192-2 ~p5_new~0 := (if node5_#t~ite11 % 256 <= 127 then node5_#t~ite11 % 256 else node5_#t~ite11 % 256 - 256);havoc node5_#t~ite11;~mode5~0 := 1; 808#L179-2 havoc node6_#t~ite12, node6_~m6~0;havoc node6_~m6~0;node6_~m6~0 := ~nomsg~0; 809#L204 assume !(0 != ~mode6~0 % 256); 816#L217 assume ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0;node6_#t~ite12 := ~send6~0; 834#L217-2 ~p6_new~0 := (if node6_#t~ite12 % 256 <= 127 then node6_#t~ite12 % 256 else node6_#t~ite12 % 256 - 256);havoc node6_#t~ite12;~mode6~0 := 1; 807#L204-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 841#L397 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1; 840#L398 assume !(~r1~0 >= 6); 838#L401 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0; 839#L402 assume ~r1~0 < 6;check_~tmp~1 := 1; 884#L397-1 check_#res := check_~tmp~1; 883#L417 main_#t~ret39 := check_#res;main_~c1~0 := main_#t~ret39;havoc main_#t~ret39;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 882#L500 assume !(0 == assert_~arg % 256); 881#L495 main_#t~post40 := main_~i2~0;main_~i2~0 := 1 + main_#t~post40;havoc main_#t~post40; 753#L467-2 [2020-11-29 23:56:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:54,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1716035805, now seen corresponding path program 3 times [2020-11-29 23:56:54,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:54,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245378799] [2020-11-29 23:56:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:54,482 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:54,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:54,537 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:56:54,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:54,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1811628457, now seen corresponding path program 1 times [2020-11-29 23:56:54,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:54,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292323779] [2020-11-29 23:56:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:54,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:56:54,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:56:54,585 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:56:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:54,586 INFO L82 PathProgramCache]: Analyzing trace with hash 892160885, now seen corresponding path program 1 times [2020-11-29 23:56:54,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:54,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428259309] [2020-11-29 23:56:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:54,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428259309] [2020-11-29 23:56:54,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:54,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:54,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341273477] [2020-11-29 23:56:55,874 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 178 DAG size of output: 173 [2020-11-29 23:56:57,066 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 169 DAG size of output: 162 [2020-11-29 23:56:57,096 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:56:57,097 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:56:57,098 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:56:57,098 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:56:57,098 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:56:57,098 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:56:57,099 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:56:57,099 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:56:57,099 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.6.ufo.BOUNDED-12.pals.c_Iteration4_Loop [2020-11-29 23:56:57,099 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:56:57,100 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:56:57,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,701 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-11-29 23:56:57,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:57,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:56:58,657 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-11-29 23:56:58,705 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2020-11-29 23:56:59,131 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2020-11-29 23:58:22,415 WARN L193 SmtUtils]: Spent 1.39 m on a formula simplification. DAG size of input: 647 DAG size of output: 199 [2020-11-29 23:58:22,602 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:58:22,603 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:58:22,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:58:22,625 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:58:22,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:58:22,700 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:22,956 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:58:22,959 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:58:22,959 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:58:22,960 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:58:22,960 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:58:22,960 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:58:22,960 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:58:22,960 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:58:22,960 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:58:22,960 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.6.ufo.BOUNDED-12.pals.c_Iteration4_Loop [2020-11-29 23:58:22,960 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:58:22,960 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:58:22,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:22,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:22,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:23,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:24,065 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-11-29 23:58:24,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:24,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:24,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:24,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:58:24,915 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-11-29 23:58:24,970 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2020-11-29 23:59:36,230 WARN L193 SmtUtils]: Spent 1.18 m on a formula simplification. DAG size of input: 647 DAG size of output: 199 [2020-11-29 23:59:36,362 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:59:36,369 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:59:36,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:59:36,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:59:36,390 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:59:36,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:59:36,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:59:36,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:59:36,396 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:59:36,396 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:36,401 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:59:36,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:59:36,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:59:36,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:59:36,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:59:36,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:59:36,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:59:36,474 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:59:36,474 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:36,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:59:36,540 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:59:36,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:59:36,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:59:36,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:59:36,544 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 23:59:36,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:59:36,551 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 23:59:36,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:36,558 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:59:36,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:59:36,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:59:36,619 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:59:36,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:59:36,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:59:36,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:59:36,623 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:59:36,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:36,628 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:59:36,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:59:36,691 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:59:36,691 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:59:36,691 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:59:36,691 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:59:36,691 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:59:36,696 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:59:36,697 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:36,706 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:59:36,760 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:59:36,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:59:36,763 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:59:36,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:59:36,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:59:36,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:59:36,764 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:59:36,764 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:36,768 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:36,828 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:59:36,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:59:36,831 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:59:36,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:59:36,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:59:36,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:59:36,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:59:36,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:59:36,838 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:36,896 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:59:36,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:59:36,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:59:36,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:59:36,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:59:36,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:59:36,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:59:36,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:59:36,906 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:59:36,968 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:59:36,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:59:36,970 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:59:36,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:59:36,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:59:36,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:59:36,972 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:59:36,972 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:36,976 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:59:37,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:59:37,044 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:59:37,044 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:59:37,044 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:59:37,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:59:37,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:59:37,056 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:59:37,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:37,063 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:59:37,146 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:59:37,146 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6535790f-89bc-40c0-a1d9-0526e8574960/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:59:37,239 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:59:37,239 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:59:37,239 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:59:37,240 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 23 Supporting invariants [] Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:59:37,302 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:59:37,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:37,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:59:37,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:37,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:59:37,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:37,770 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 23:59:37,770 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 156 states and 215 transitions. cyclomatic complexity: 60 Second operand 3 states. [2020-11-29 23:59:37,848 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 156 states and 215 transitions. cyclomatic complexity: 60. Second operand 3 states. Result 265 states and 384 transitions. Complement of second has 4 states. [2020-11-29 23:59:37,849 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 [2020-11-29 23:59:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:59:37,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2020-11-29 23:59:37,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 136 transitions. Stem has 46 letters. Loop has 33 letters. [2020-11-29 23:59:37,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:59:37,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 136 transitions. Stem has 79 letters. Loop has 33 letters. [2020-11-29 23:59:37,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:59:37,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 136 transitions. Stem has 46 letters. Loop has 66 letters. [2020-11-29 23:59:37,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:59:37,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 265 states and 384 transitions. [2020-11-29 23:59:37,864 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:59:37,865 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 265 states to 0 states and 0 transitions. [2020-11-29 23:59:37,865 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:59:37,865 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:59:37,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:59:37,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:59:37,866 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:59:37,866 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:59:37,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:37,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:59:37,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:59:37,868 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2020-11-29 23:59:37,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:37,869 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 23:59:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:59:37,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 23:59:37,869 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:59:37,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:59:37,870 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:59:37,870 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:59:37,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:59:37,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:59:37,870 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:59:37,871 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:59:37,871 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:59:37,871 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 23:59:37,871 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:59:37,871 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:59:37,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:59:37,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:59:37 BoogieIcfgContainer [2020-11-29 23:59:37,888 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:59:37,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:59:37,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:59:37,889 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:59:37,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:52" (3/4) ... [2020-11-29 23:59:37,894 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:59:37,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:59:37,903 INFO L168 Benchmark]: Toolchain (without parser) took 167628.20 ms. Allocated memory was 92.3 MB in the beginning and 314.6 MB in the end (delta: 222.3 MB). Free memory was 54.4 MB in the beginning and 253.8 MB in the end (delta: -199.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:37,904 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 92.3 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:59:37,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.56 ms. Allocated memory is still 92.3 MB. Free memory was 54.2 MB in the beginning and 63.8 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:37,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.13 ms. Allocated memory is still 92.3 MB. Free memory was 63.8 MB in the beginning and 61.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:37,907 INFO L168 Benchmark]: Boogie Preprocessor took 75.70 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 59.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:37,911 INFO L168 Benchmark]: RCFGBuilder took 1246.62 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 59.0 MB in the beginning and 56.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:37,912 INFO L168 Benchmark]: BuchiAutomizer took 165493.54 ms. Allocated memory was 111.1 MB in the beginning and 314.6 MB in the end (delta: 203.4 MB). Free memory was 55.7 MB in the beginning and 253.8 MB in the end (delta: -198.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:37,913 INFO L168 Benchmark]: Witness Printer took 5.63 ms. Allocated memory is still 314.6 MB. Free memory is still 253.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:59:37,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 92.3 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 722.56 ms. Allocated memory is still 92.3 MB. Free memory was 54.2 MB in the beginning and 63.8 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.13 ms. Allocated memory is still 92.3 MB. Free memory was 63.8 MB in the beginning and 61.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.70 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 59.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1246.62 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 59.0 MB in the beginning and 56.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 165493.54 ms. Allocated memory was 111.1 MB in the beginning and 314.6 MB in the end (delta: 203.4 MB). Free memory was 55.7 MB in the beginning and 253.8 MB in the end (delta: -198.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.63 ms. Allocated memory is still 314.6 MB. Free memory is still 253.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i2 + 23 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 165.3s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 164.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 156 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 660 SDtfs, 306 SDslu, 1122 SDs, 0 SdLazy, 36 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital268 mio100 ax100 hnf98 lsp84 ukn67 mio100 lsp100 div162 bol100 ite100 ukn100 eq171 hnf69 smp100 dnf40960 smp12 tf100 neg98 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...