./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.BOUNDED-14.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_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.BOUNDED-14.pals.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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 d72808192e84e1bba8f49032fc5b5b779418ed62 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:09:31,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:09:31,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:09:31,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:09:31,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:09:31,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:09:31,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:09:31,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:09:31,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:09:31,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:09:31,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:09:31,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:09:31,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:09:31,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:09:31,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:09:31,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:09:31,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:09:31,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:09:31,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:09:31,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:09:31,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:09:31,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:09:31,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:09:31,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:09:31,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:09:31,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:09:31,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:09:31,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:09:31,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:09:31,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:09:31,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:09:31,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:09:31,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:09:31,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:09:31,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:09:31,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:09:31,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:09:31,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:09:31,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:09:31,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:09:31,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:09:31,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 20:09:31,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:09:31,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:09:31,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:09:31,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:09:31,668 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:09:31,668 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:09:31,669 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:09:31,669 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:09:31,669 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:09:31,670 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:09:31,671 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:09:31,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:09:31,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:09:31,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:09:31,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:09:31,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:09:31,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:09:31,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:09:31,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:09:31,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:09:31,675 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:09:31,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:09:31,675 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:09:31,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:09:31,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:09:31,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:09:31,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:09:31,677 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:09:31,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:09:31,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:09:31,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:09:31,680 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:09:31,682 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:09:31,682 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_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d72808192e84e1bba8f49032fc5b5b779418ed62 [2020-11-29 20:09:32,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:09:32,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:09:32,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:09:32,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:09:32,118 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:09:32,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.BOUNDED-14.pals.c [2020-11-29 20:09:32,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/data/29e90b745/42f2fa8f51ba412483af94bd5a2c2d6a/FLAG8044b2536 [2020-11-29 20:09:32,948 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:09:32,949 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.BOUNDED-14.pals.c [2020-11-29 20:09:32,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/data/29e90b745/42f2fa8f51ba412483af94bd5a2c2d6a/FLAG8044b2536 [2020-11-29 20:09:33,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/data/29e90b745/42f2fa8f51ba412483af94bd5a2c2d6a [2020-11-29 20:09:33,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:09:33,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:09:33,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:09:33,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:09:33,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:09:33,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be39802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33, skipping insertion in model container [2020-11-29 20:09:33,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:09:33,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:09:33,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:09:33,693 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:09:33,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:09:33,812 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:09:33,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33 WrapperNode [2020-11-29 20:09:33,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:09:33,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:09:33,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:09:33,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:09:33,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:09:33,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:09:33,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:09:33,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:09:33,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (1/1) ... [2020-11-29 20:09:33,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:09:33,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:09:33,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:09:33,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:09:33,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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 20:09:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:09:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:09:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:09:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:09:35,540 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:09:35,541 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 20:09:35,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:09:35 BoogieIcfgContainer [2020-11-29 20:09:35,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:09:35,564 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:09:35,564 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:09:35,574 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:09:35,575 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:09:35,575 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:09:33" (1/3) ... [2020-11-29 20:09:35,587 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69713cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:09:35, skipping insertion in model container [2020-11-29 20:09:35,588 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:09:35,588 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:33" (2/3) ... [2020-11-29 20:09:35,589 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69713cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:09:35, skipping insertion in model container [2020-11-29 20:09:35,589 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:09:35,589 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:09:35" (3/3) ... [2020-11-29 20:09:35,591 INFO L373 chiAutomizerObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c [2020-11-29 20:09:35,682 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:09:35,682 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:09:35,683 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:09:35,683 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:09:35,683 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:09:35,683 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:09:35,683 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:09:35,684 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:09:35,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states. [2020-11-29 20:09:35,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2020-11-29 20:09:35,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:09:35,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:09:35,753 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:09:35,753 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, 1] [2020-11-29 20:09:35,754 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:09:35,754 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states. [2020-11-29 20:09:35,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2020-11-29 20:09:35,768 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:09:35,768 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:09:35,771 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:09:35,772 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, 1] [2020-11-29 20:09:35,782 INFO L794 eck$LassoCheckResult]: Stem: 93#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;~p7~0 := 0;~p7_old~0 := 0;~p7_new~0 := 0;~id7~0 := 0;~st7~0 := 0;~send7~0 := 0;~mode7~0 := 0; 8#L-1true havoc main_#res;havoc 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~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~ret43, main_#t~ret44, main_#t~post45, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id1~0 := main_#t~nondet15;havoc main_#t~nondet15;~st1~0 := main_#t~nondet16;havoc main_#t~nondet16;~send1~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~id4~0 := main_#t~nondet27;havoc main_#t~nondet27;~st4~0 := main_#t~nondet28;havoc main_#t~nondet28;~send4~0 := main_#t~nondet29;havoc main_#t~nondet29;~mode4~0 := main_#t~nondet30;havoc main_#t~nondet30;~id5~0 := main_#t~nondet31;havoc main_#t~nondet31;~st5~0 := main_#t~nondet32;havoc main_#t~nondet32;~send5~0 := main_#t~nondet33;havoc main_#t~nondet33;~mode5~0 := main_#t~nondet34;havoc main_#t~nondet34;~id6~0 := main_#t~nondet35;havoc main_#t~nondet35;~st6~0 := main_#t~nondet36;havoc main_#t~nondet36;~send6~0 := main_#t~nondet37;havoc main_#t~nondet37;~mode6~0 := main_#t~nondet38;havoc main_#t~nondet38;~id7~0 := main_#t~nondet39;havoc main_#t~nondet39;~st7~0 := main_#t~nondet40;havoc main_#t~nondet40;~send7~0 := main_#t~nondet41;havoc main_#t~nondet41;~mode7~0 := main_#t~nondet42;havoc main_#t~nondet42;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 37#L260true assume !(0 == ~r1~0);init_~tmp~0 := 0; 34#L260-1true init_#res := init_~tmp~0; 22#L461true main_#t~ret43 := init_#res;main_~i2~0 := main_#t~ret43;havoc main_#t~ret43;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; 95#L22true assume !(0 == assume_abort_if_not_~cond); 10#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;~p7_old~0 := ~nomsg~0;~p7_new~0 := ~nomsg~0;main_~i2~0 := 0; 91#L545-2true [2020-11-29 20:09:35,784 INFO L796 eck$LassoCheckResult]: Loop: 91#L545-2true assume !!(main_~i2~0 < 14);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 109#L85true assume !(0 != ~mode1~0 % 256); 100#L99true assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite7 := ~send1~0; 97#L99-2true ~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; 87#L85-2true havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 38#L111true assume !(0 != ~mode2~0 % 256); 70#L124true assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite8 := ~send2~0; 69#L124-2true ~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; 49#L111-2true havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 26#L136true assume !(0 != ~mode3~0 % 256); 74#L149true assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite9 := ~send3~0; 59#L149-2true ~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; 23#L136-2true havoc node4_#t~ite10, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 32#L161true assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 18#L164true assume !(node4_~m4~0 != ~nomsg~0); 17#L164-1true ~mode4~0 := 0; 28#L161-2true havoc node5_#t~ite11, node5_~m5~0;havoc node5_~m5~0;node5_~m5~0 := ~nomsg~0; 3#L186true assume 0 != ~mode5~0 % 256;node5_~m5~0 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 118#L189true assume !(node5_~m5~0 != ~nomsg~0); 117#L189-1true ~mode5~0 := 0; 16#L186-2true havoc node6_#t~ite12, node6_~m6~0;havoc node6_~m6~0;node6_~m6~0 := ~nomsg~0; 120#L211true assume 0 != ~mode6~0 % 256;node6_~m6~0 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 125#L214true assume !(node6_~m6~0 != ~nomsg~0); 123#L214-1true ~mode6~0 := 0; 116#L211-2true havoc node7_#t~ite13, node7_~m7~0;havoc node7_~m7~0;node7_~m7~0 := ~nomsg~0; 126#L236true assume !(0 != ~mode7~0 % 256); 36#L249true assume ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0;node7_#t~ite13 := ~send7~0; 33#L249-2true ~p7_new~0 := (if node7_#t~ite13 % 256 <= 127 then node7_#t~ite13 % 256 else node7_#t~ite13 % 256 - 256);havoc node7_#t~ite13;~mode7~0 := 1; 121#L236-2true ~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;~p7_old~0 := ~p7_new~0;~p7_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 42#L469true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1);check_~tmp~1 := 0; 29#L469-1true check_#res := check_~tmp~1; 122#L489true main_#t~ret44 := check_#res;main_~c1~0 := main_#t~ret44;havoc main_#t~ret44;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 81#L581true assume !(0 == assert_~arg % 256); 60#L576true main_#t~post45 := main_~i2~0;main_~i2~0 := 1 + main_#t~post45;havoc main_#t~post45; 91#L545-2true [2020-11-29 20:09:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:35,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2087378158, now seen corresponding path program 1 times [2020-11-29 20:09:35,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:35,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722082078] [2020-11-29 20:09:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:09:36,151 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 20:09:36,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722082078] [2020-11-29 20:09:36,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:09:36,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:09:36,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163966169] [2020-11-29 20:09:36,160 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 20:09:36,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:36,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1531170268, now seen corresponding path program 1 times [2020-11-29 20:09:36,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:36,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466263695] [2020-11-29 20:09:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:09:36,506 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 20:09:36,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466263695] [2020-11-29 20:09:36,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:09:36,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:09:36,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456746960] [2020-11-29 20:09:36,509 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:09:36,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:09:36,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:09:36,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:09:36,533 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 5 states. [2020-11-29 20:09:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:09:36,838 INFO L93 Difference]: Finished difference Result 130 states and 219 transitions. [2020-11-29 20:09:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:09:36,841 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 219 transitions. [2020-11-29 20:09:36,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 66 [2020-11-29 20:09:36,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 122 states and 162 transitions. [2020-11-29 20:09:36,861 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2020-11-29 20:09:36,862 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2020-11-29 20:09:36,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 162 transitions. [2020-11-29 20:09:36,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:09:36,865 INFO L691 BuchiCegarLoop]: Abstraction has 122 states and 162 transitions. [2020-11-29 20:09:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 162 transitions. [2020-11-29 20:09:36,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-11-29 20:09:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-29 20:09:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 162 transitions. [2020-11-29 20:09:36,914 INFO L714 BuchiCegarLoop]: Abstraction has 122 states and 162 transitions. [2020-11-29 20:09:36,914 INFO L594 BuchiCegarLoop]: Abstraction has 122 states and 162 transitions. [2020-11-29 20:09:36,915 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:09:36,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 122 states and 162 transitions. [2020-11-29 20:09:36,918 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 66 [2020-11-29 20:09:36,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:09:36,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:09:36,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:09:36,927 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, 1] [2020-11-29 20:09:36,928 INFO L794 eck$LassoCheckResult]: Stem: 389#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;~p7~0 := 0;~p7_old~0 := 0;~p7_new~0 := 0;~id7~0 := 0;~st7~0 := 0;~send7~0 := 0;~mode7~0 := 0; 287#L-1 havoc main_#res;havoc 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~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~ret43, main_#t~ret44, main_#t~post45, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id1~0 := main_#t~nondet15;havoc main_#t~nondet15;~st1~0 := main_#t~nondet16;havoc main_#t~nondet16;~send1~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~id4~0 := main_#t~nondet27;havoc main_#t~nondet27;~st4~0 := main_#t~nondet28;havoc main_#t~nondet28;~send4~0 := main_#t~nondet29;havoc main_#t~nondet29;~mode4~0 := main_#t~nondet30;havoc main_#t~nondet30;~id5~0 := main_#t~nondet31;havoc main_#t~nondet31;~st5~0 := main_#t~nondet32;havoc main_#t~nondet32;~send5~0 := main_#t~nondet33;havoc main_#t~nondet33;~mode5~0 := main_#t~nondet34;havoc main_#t~nondet34;~id6~0 := main_#t~nondet35;havoc main_#t~nondet35;~st6~0 := main_#t~nondet36;havoc main_#t~nondet36;~send6~0 := main_#t~nondet37;havoc main_#t~nondet37;~mode6~0 := main_#t~nondet38;havoc main_#t~nondet38;~id7~0 := main_#t~nondet39;havoc main_#t~nondet39;~st7~0 := main_#t~nondet40;havoc main_#t~nondet40;~send7~0 := main_#t~nondet41;havoc main_#t~nondet41;~mode7~0 := main_#t~nondet42;havoc main_#t~nondet42;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 288#L260 assume 0 == ~r1~0; 337#L261 assume ~id1~0 >= 0; 363#L262 assume 0 == ~st1~0; 279#L263 assume ~send1~0 == ~id1~0; 280#L264 assume 0 == ~mode1~0 % 256; 345#L265 assume ~id2~0 >= 0; 289#L266 assume 0 == ~st2~0; 290#L267 assume ~send2~0 == ~id2~0; 348#L268 assume 0 == ~mode2~0 % 256; 349#L269 assume ~id3~0 >= 0; 384#L270 assume 0 == ~st3~0; 307#L271 assume ~send3~0 == ~id3~0; 308#L272 assume 0 == ~mode3~0 % 256; 364#L273 assume ~id4~0 >= 0; 281#L274 assume 0 == ~st4~0; 282#L275 assume ~send4~0 == ~id4~0; 346#L276 assume 0 == ~mode4~0 % 256; 291#L277 assume ~id5~0 >= 0; 292#L278 assume 0 == ~st5~0; 350#L279 assume ~send5~0 == ~id5~0; 351#L280 assume 0 == ~mode5~0 % 256; 385#L281 assume ~id6~0 >= 0; 309#L282 assume 0 == ~st6~0; 310#L283 assume ~send6~0 == ~id6~0; 365#L284 assume 0 == ~mode6~0 % 256; 283#L285 assume ~id7~0 >= 0; 284#L286 assume 0 == ~st7~0; 370#L287 assume ~send7~0 == ~id7~0; 295#L288 assume 0 == ~mode7~0 % 256; 296#L289 assume ~id1~0 != ~id2~0; 352#L290 assume ~id1~0 != ~id3~0; 353#L291 assume ~id1~0 != ~id4~0; 386#L292 assume ~id1~0 != ~id5~0; 311#L293 assume ~id1~0 != ~id6~0; 312#L294 assume ~id1~0 != ~id7~0; 366#L295 assume ~id2~0 != ~id3~0; 285#L296 assume ~id2~0 != ~id4~0; 286#L297 assume ~id2~0 != ~id5~0; 371#L298 assume ~id2~0 != ~id6~0; 299#L299 assume ~id2~0 != ~id7~0; 300#L300 assume ~id3~0 != ~id4~0; 354#L301 assume ~id3~0 != ~id5~0; 355#L302 assume ~id3~0 != ~id6~0; 376#L303 assume ~id3~0 != ~id7~0; 333#L304 assume ~id4~0 != ~id5~0; 334#L305 assume ~id4~0 != ~id6~0; 372#L306 assume ~id4~0 != ~id7~0; 297#L307 assume ~id5~0 != ~id6~0; 298#L308 assume ~id5~0 != ~id7~0; 369#L309 assume ~id6~0 != ~id7~0;init_~tmp~0 := 1; 335#L260-1 init_#res := init_~tmp~0; 313#L461 main_#t~ret43 := init_#res;main_~i2~0 := main_#t~ret43;havoc main_#t~ret43;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; 314#L22 assume !(0 == assume_abort_if_not_~cond); 293#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;~p7_old~0 := ~nomsg~0;~p7_new~0 := ~nomsg~0;main_~i2~0 := 0; 294#L545-2 [2020-11-29 20:09:36,929 INFO L796 eck$LassoCheckResult]: Loop: 294#L545-2 assume !!(main_~i2~0 < 14);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 388#L85 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 := ~p7_old~0;~p7_old~0 := ~nomsg~0; 358#L89 assume !(node1_~m1~0 != ~nomsg~0); 356#L89-1 ~mode1~0 := 0; 357#L85-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 338#L111 assume !(0 != ~mode2~0 % 256); 339#L124 assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite8 := ~send2~0; 377#L124-2 ~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; 318#L111-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 321#L136 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 322#L139 assume !(node3_~m3~0 != ~nomsg~0); 328#L139-1 ~mode3~0 := 0; 315#L136-2 havoc node4_#t~ite10, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 316#L161 assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 305#L164 assume !(node4_~m4~0 != ~nomsg~0); 303#L164-1 ~mode4~0 := 0; 304#L161-2 havoc node5_#t~ite11, node5_~m5~0;havoc node5_~m5~0;node5_~m5~0 := ~nomsg~0; 276#L186 assume 0 != ~mode5~0 % 256;node5_~m5~0 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 277#L189 assume !(node5_~m5~0 != ~nomsg~0); 381#L189-1 ~mode5~0 := 0; 301#L186-2 havoc node6_#t~ite12, node6_~m6~0;havoc node6_~m6~0;node6_~m6~0 := ~nomsg~0; 302#L211 assume !(0 != ~mode6~0 % 256); 347#L224 assume ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0;node6_#t~ite12 := ~send6~0; 324#L224-2 ~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; 325#L211-2 havoc node7_#t~ite13, node7_~m7~0;havoc node7_~m7~0;node7_~m7~0 := ~nomsg~0; 396#L236 assume !(0 != ~mode7~0 % 256); 336#L249 assume ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0;node7_#t~ite13 := ~send7~0; 331#L249-2 ~p7_new~0 := (if node7_#t~ite13 % 256 <= 127 then node7_#t~ite13 % 256 else node7_#t~ite13 % 256 - 256);havoc node7_#t~ite13;~mode7~0 := 1; 332#L236-2 ~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;~p7_old~0 := ~p7_new~0;~p7_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 343#L469 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1);check_~tmp~1 := 0; 326#L469-1 check_#res := check_~tmp~1; 327#L489 main_#t~ret44 := check_#res;main_~c1~0 := main_#t~ret44;havoc main_#t~ret44;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 383#L581 assume !(0 == assert_~arg % 256); 367#L576 main_#t~post45 := main_~i2~0;main_~i2~0 := 1 + main_#t~post45;havoc main_#t~post45; 294#L545-2 [2020-11-29 20:09:36,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:36,930 INFO L82 PathProgramCache]: Analyzing trace with hash 292839954, now seen corresponding path program 1 times [2020-11-29 20:09:36,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:36,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294193442] [2020-11-29 20:09:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:09:37,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:09:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:09:37,127 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:09:37,254 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:09:37,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:37,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1367037286, now seen corresponding path program 1 times [2020-11-29 20:09:37,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:37,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400184891] [2020-11-29 20:09:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:09:37,531 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 20:09:37,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400184891] [2020-11-29 20:09:37,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:09:37,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:09:37,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58323889] [2020-11-29 20:09:37,533 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:09:37,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:09:37,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:09:37,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:09:37,539 INFO L87 Difference]: Start difference. First operand 122 states and 162 transitions. cyclomatic complexity: 41 Second operand 5 states. [2020-11-29 20:09:37,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:09:37,669 INFO L93 Difference]: Finished difference Result 125 states and 164 transitions. [2020-11-29 20:09:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:09:37,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 164 transitions. [2020-11-29 20:09:37,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 66 [2020-11-29 20:09:37,678 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 159 transitions. [2020-11-29 20:09:37,678 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2020-11-29 20:09:37,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2020-11-29 20:09:37,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 159 transitions. [2020-11-29 20:09:37,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:09:37,692 INFO L691 BuchiCegarLoop]: Abstraction has 122 states and 159 transitions. [2020-11-29 20:09:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 159 transitions. [2020-11-29 20:09:37,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-11-29 20:09:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-29 20:09:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 159 transitions. [2020-11-29 20:09:37,712 INFO L714 BuchiCegarLoop]: Abstraction has 122 states and 159 transitions. [2020-11-29 20:09:37,712 INFO L594 BuchiCegarLoop]: Abstraction has 122 states and 159 transitions. [2020-11-29 20:09:37,713 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:09:37,713 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 122 states and 159 transitions. [2020-11-29 20:09:37,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 66 [2020-11-29 20:09:37,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:09:37,718 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:09:37,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:09:37,726 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, 1, 1, 1] [2020-11-29 20:09:37,727 INFO L794 eck$LassoCheckResult]: Stem: 648#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;~p7~0 := 0;~p7_old~0 := 0;~p7_new~0 := 0;~id7~0 := 0;~st7~0 := 0;~send7~0 := 0;~mode7~0 := 0; 546#L-1 havoc main_#res;havoc 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~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~ret43, main_#t~ret44, main_#t~post45, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id1~0 := main_#t~nondet15;havoc main_#t~nondet15;~st1~0 := main_#t~nondet16;havoc main_#t~nondet16;~send1~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~id4~0 := main_#t~nondet27;havoc main_#t~nondet27;~st4~0 := main_#t~nondet28;havoc main_#t~nondet28;~send4~0 := main_#t~nondet29;havoc main_#t~nondet29;~mode4~0 := main_#t~nondet30;havoc main_#t~nondet30;~id5~0 := main_#t~nondet31;havoc main_#t~nondet31;~st5~0 := main_#t~nondet32;havoc main_#t~nondet32;~send5~0 := main_#t~nondet33;havoc main_#t~nondet33;~mode5~0 := main_#t~nondet34;havoc main_#t~nondet34;~id6~0 := main_#t~nondet35;havoc main_#t~nondet35;~st6~0 := main_#t~nondet36;havoc main_#t~nondet36;~send6~0 := main_#t~nondet37;havoc main_#t~nondet37;~mode6~0 := main_#t~nondet38;havoc main_#t~nondet38;~id7~0 := main_#t~nondet39;havoc main_#t~nondet39;~st7~0 := main_#t~nondet40;havoc main_#t~nondet40;~send7~0 := main_#t~nondet41;havoc main_#t~nondet41;~mode7~0 := main_#t~nondet42;havoc main_#t~nondet42;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 547#L260 assume 0 == ~r1~0; 596#L261 assume ~id1~0 >= 0; 622#L262 assume 0 == ~st1~0; 538#L263 assume ~send1~0 == ~id1~0; 539#L264 assume 0 == ~mode1~0 % 256; 604#L265 assume ~id2~0 >= 0; 548#L266 assume 0 == ~st2~0; 549#L267 assume ~send2~0 == ~id2~0; 607#L268 assume 0 == ~mode2~0 % 256; 608#L269 assume ~id3~0 >= 0; 643#L270 assume 0 == ~st3~0; 566#L271 assume ~send3~0 == ~id3~0; 567#L272 assume 0 == ~mode3~0 % 256; 623#L273 assume ~id4~0 >= 0; 540#L274 assume 0 == ~st4~0; 541#L275 assume ~send4~0 == ~id4~0; 605#L276 assume 0 == ~mode4~0 % 256; 550#L277 assume ~id5~0 >= 0; 551#L278 assume 0 == ~st5~0; 609#L279 assume ~send5~0 == ~id5~0; 610#L280 assume 0 == ~mode5~0 % 256; 644#L281 assume ~id6~0 >= 0; 568#L282 assume 0 == ~st6~0; 569#L283 assume ~send6~0 == ~id6~0; 624#L284 assume 0 == ~mode6~0 % 256; 542#L285 assume ~id7~0 >= 0; 543#L286 assume 0 == ~st7~0; 629#L287 assume ~send7~0 == ~id7~0; 554#L288 assume 0 == ~mode7~0 % 256; 555#L289 assume ~id1~0 != ~id2~0; 611#L290 assume ~id1~0 != ~id3~0; 612#L291 assume ~id1~0 != ~id4~0; 645#L292 assume ~id1~0 != ~id5~0; 570#L293 assume ~id1~0 != ~id6~0; 571#L294 assume ~id1~0 != ~id7~0; 625#L295 assume ~id2~0 != ~id3~0; 544#L296 assume ~id2~0 != ~id4~0; 545#L297 assume ~id2~0 != ~id5~0; 630#L298 assume ~id2~0 != ~id6~0; 558#L299 assume ~id2~0 != ~id7~0; 559#L300 assume ~id3~0 != ~id4~0; 613#L301 assume ~id3~0 != ~id5~0; 614#L302 assume ~id3~0 != ~id6~0; 635#L303 assume ~id3~0 != ~id7~0; 592#L304 assume ~id4~0 != ~id5~0; 593#L305 assume ~id4~0 != ~id6~0; 631#L306 assume ~id4~0 != ~id7~0; 556#L307 assume ~id5~0 != ~id6~0; 557#L308 assume ~id5~0 != ~id7~0; 628#L309 assume ~id6~0 != ~id7~0;init_~tmp~0 := 1; 594#L260-1 init_#res := init_~tmp~0; 572#L461 main_#t~ret43 := init_#res;main_~i2~0 := main_#t~ret43;havoc main_#t~ret43;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; 573#L22 assume !(0 == assume_abort_if_not_~cond); 552#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;~p7_old~0 := ~nomsg~0;~p7_new~0 := ~nomsg~0;main_~i2~0 := 0; 553#L545-2 [2020-11-29 20:09:37,727 INFO L796 eck$LassoCheckResult]: Loop: 553#L545-2 assume !!(main_~i2~0 < 14);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 647#L85 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 := ~p7_old~0;~p7_old~0 := ~nomsg~0; 617#L89 assume !(node1_~m1~0 != ~nomsg~0); 615#L89-1 ~mode1~0 := 0; 616#L85-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 597#L111 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 578#L114 assume !(node2_~m2~0 != ~nomsg~0); 576#L114-1 ~mode2~0 := 0; 577#L111-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 580#L136 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 581#L139 assume !(node3_~m3~0 != ~nomsg~0); 587#L139-1 ~mode3~0 := 0; 574#L136-2 havoc node4_#t~ite10, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 575#L161 assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 564#L164 assume !(node4_~m4~0 != ~nomsg~0); 562#L164-1 ~mode4~0 := 0; 563#L161-2 havoc node5_#t~ite11, node5_~m5~0;havoc node5_~m5~0;node5_~m5~0 := ~nomsg~0; 535#L186 assume 0 != ~mode5~0 % 256;node5_~m5~0 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 536#L189 assume !(node5_~m5~0 != ~nomsg~0); 640#L189-1 ~mode5~0 := 0; 560#L186-2 havoc node6_#t~ite12, node6_~m6~0;havoc node6_~m6~0;node6_~m6~0 := ~nomsg~0; 561#L211 assume 0 != ~mode6~0 % 256;node6_~m6~0 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 656#L214 assume !(node6_~m6~0 != ~nomsg~0); 620#L214-1 ~mode6~0 := 0; 584#L211-2 havoc node7_#t~ite13, node7_~m7~0;havoc node7_~m7~0;node7_~m7~0 := ~nomsg~0; 655#L236 assume !(0 != ~mode7~0 % 256); 595#L249 assume ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0;node7_#t~ite13 := ~send7~0; 590#L249-2 ~p7_new~0 := (if node7_#t~ite13 % 256 <= 127 then node7_#t~ite13 % 256 else node7_#t~ite13 % 256 - 256);havoc node7_#t~ite13;~mode7~0 := 1; 591#L236-2 ~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;~p7_old~0 := ~p7_new~0;~p7_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 602#L469 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1; 603#L470 assume ~r1~0 >= 7; 633#L474 assume ~r1~0 < 7;check_~tmp~1 := 1; 585#L469-1 check_#res := check_~tmp~1; 586#L489 main_#t~ret44 := check_#res;main_~c1~0 := main_#t~ret44;havoc main_#t~ret44;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 642#L581 assume !(0 == assert_~arg % 256); 626#L576 main_#t~post45 := main_~i2~0;main_~i2~0 := 1 + main_#t~post45;havoc main_#t~post45; 553#L545-2 [2020-11-29 20:09:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:37,728 INFO L82 PathProgramCache]: Analyzing trace with hash 292839954, now seen corresponding path program 2 times [2020-11-29 20:09:37,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:37,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094712851] [2020-11-29 20:09:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:09:37,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:09:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:09:37,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:09:37,870 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:09:37,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:37,871 INFO L82 PathProgramCache]: Analyzing trace with hash -602955030, now seen corresponding path program 1 times [2020-11-29 20:09:37,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:37,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982792700] [2020-11-29 20:09:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:09:37,933 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 20:09:37,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982792700] [2020-11-29 20:09:37,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:09:37,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:09:37,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170701404] [2020-11-29 20:09:37,937 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:09:37,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:09:37,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:09:37,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:09:37,940 INFO L87 Difference]: Start difference. First operand 122 states and 159 transitions. cyclomatic complexity: 38 Second operand 3 states. [2020-11-29 20:09:38,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:09:38,004 INFO L93 Difference]: Finished difference Result 182 states and 251 transitions. [2020-11-29 20:09:38,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:09:38,006 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 251 transitions. [2020-11-29 20:09:38,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 126 [2020-11-29 20:09:38,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 251 transitions. [2020-11-29 20:09:38,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 182 [2020-11-29 20:09:38,012 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 182 [2020-11-29 20:09:38,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 251 transitions. [2020-11-29 20:09:38,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:09:38,024 INFO L691 BuchiCegarLoop]: Abstraction has 182 states and 251 transitions. [2020-11-29 20:09:38,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 251 transitions. [2020-11-29 20:09:38,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-11-29 20:09:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-29 20:09:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 251 transitions. [2020-11-29 20:09:38,050 INFO L714 BuchiCegarLoop]: Abstraction has 182 states and 251 transitions. [2020-11-29 20:09:38,050 INFO L594 BuchiCegarLoop]: Abstraction has 182 states and 251 transitions. [2020-11-29 20:09:38,050 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:09:38,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 251 transitions. [2020-11-29 20:09:38,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 126 [2020-11-29 20:09:38,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:09:38,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:09:38,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:09:38,061 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, 1, 1, 1, 1] [2020-11-29 20:09:38,063 INFO L794 eck$LassoCheckResult]: Stem: 962#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;~p7~0 := 0;~p7_old~0 := 0;~p7_new~0 := 0;~id7~0 := 0;~st7~0 := 0;~send7~0 := 0;~mode7~0 := 0; 856#L-1 havoc main_#res;havoc 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~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~ret43, main_#t~ret44, main_#t~post45, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id1~0 := main_#t~nondet15;havoc main_#t~nondet15;~st1~0 := main_#t~nondet16;havoc main_#t~nondet16;~send1~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~id4~0 := main_#t~nondet27;havoc main_#t~nondet27;~st4~0 := main_#t~nondet28;havoc main_#t~nondet28;~send4~0 := main_#t~nondet29;havoc main_#t~nondet29;~mode4~0 := main_#t~nondet30;havoc main_#t~nondet30;~id5~0 := main_#t~nondet31;havoc main_#t~nondet31;~st5~0 := main_#t~nondet32;havoc main_#t~nondet32;~send5~0 := main_#t~nondet33;havoc main_#t~nondet33;~mode5~0 := main_#t~nondet34;havoc main_#t~nondet34;~id6~0 := main_#t~nondet35;havoc main_#t~nondet35;~st6~0 := main_#t~nondet36;havoc main_#t~nondet36;~send6~0 := main_#t~nondet37;havoc main_#t~nondet37;~mode6~0 := main_#t~nondet38;havoc main_#t~nondet38;~id7~0 := main_#t~nondet39;havoc main_#t~nondet39;~st7~0 := main_#t~nondet40;havoc main_#t~nondet40;~send7~0 := main_#t~nondet41;havoc main_#t~nondet41;~mode7~0 := main_#t~nondet42;havoc main_#t~nondet42;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 857#L260 assume 0 == ~r1~0; 907#L261 assume ~id1~0 >= 0; 933#L262 assume 0 == ~st1~0; 848#L263 assume ~send1~0 == ~id1~0; 849#L264 assume 0 == ~mode1~0 % 256; 915#L265 assume ~id2~0 >= 0; 858#L266 assume 0 == ~st2~0; 859#L267 assume ~send2~0 == ~id2~0; 918#L268 assume 0 == ~mode2~0 % 256; 919#L269 assume ~id3~0 >= 0; 956#L270 assume 0 == ~st3~0; 876#L271 assume ~send3~0 == ~id3~0; 877#L272 assume 0 == ~mode3~0 % 256; 934#L273 assume ~id4~0 >= 0; 850#L274 assume 0 == ~st4~0; 851#L275 assume ~send4~0 == ~id4~0; 916#L276 assume 0 == ~mode4~0 % 256; 860#L277 assume ~id5~0 >= 0; 861#L278 assume 0 == ~st5~0; 920#L279 assume ~send5~0 == ~id5~0; 921#L280 assume 0 == ~mode5~0 % 256; 957#L281 assume ~id6~0 >= 0; 878#L282 assume 0 == ~st6~0; 879#L283 assume ~send6~0 == ~id6~0; 935#L284 assume 0 == ~mode6~0 % 256; 852#L285 assume ~id7~0 >= 0; 853#L286 assume 0 == ~st7~0; 941#L287 assume ~send7~0 == ~id7~0; 864#L288 assume 0 == ~mode7~0 % 256; 865#L289 assume ~id1~0 != ~id2~0; 922#L290 assume ~id1~0 != ~id3~0; 923#L291 assume ~id1~0 != ~id4~0; 958#L292 assume ~id1~0 != ~id5~0; 880#L293 assume ~id1~0 != ~id6~0; 881#L294 assume ~id1~0 != ~id7~0; 936#L295 assume ~id2~0 != ~id3~0; 854#L296 assume ~id2~0 != ~id4~0; 855#L297 assume ~id2~0 != ~id5~0; 942#L298 assume ~id2~0 != ~id6~0; 868#L299 assume ~id2~0 != ~id7~0; 869#L300 assume ~id3~0 != ~id4~0; 924#L301 assume ~id3~0 != ~id5~0; 925#L302 assume ~id3~0 != ~id6~0; 947#L303 assume ~id3~0 != ~id7~0; 903#L304 assume ~id4~0 != ~id5~0; 904#L305 assume ~id4~0 != ~id6~0; 943#L306 assume ~id4~0 != ~id7~0; 866#L307 assume ~id5~0 != ~id6~0; 867#L308 assume ~id5~0 != ~id7~0; 940#L309 assume ~id6~0 != ~id7~0;init_~tmp~0 := 1; 905#L260-1 init_#res := init_~tmp~0; 884#L461 main_#t~ret43 := init_#res;main_~i2~0 := main_#t~ret43;havoc main_#t~ret43;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; 885#L22 assume !(0 == assume_abort_if_not_~cond); 862#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;~p7_old~0 := ~nomsg~0;~p7_new~0 := ~nomsg~0;main_~i2~0 := 0; 863#L545-2 [2020-11-29 20:09:38,065 INFO L796 eck$LassoCheckResult]: Loop: 863#L545-2 assume !!(main_~i2~0 < 14);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 1023#L85 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 := ~p7_old~0;~p7_old~0 := ~nomsg~0; 928#L89 assume !(node1_~m1~0 != ~nomsg~0); 926#L89-1 ~mode1~0 := 0; 927#L85-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 1020#L111 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 1017#L114 assume !(node2_~m2~0 != ~nomsg~0); 1015#L114-1 ~mode2~0 := 0; 1013#L111-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 1012#L136 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 898#L139 assume !(node3_~m3~0 != ~nomsg~0); 897#L139-1 ~mode3~0 := 0; 882#L136-2 havoc node4_#t~ite10, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 883#L161 assume !(0 != ~mode4~0 % 256); 900#L174 assume !(~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0);node4_#t~ite10 := ~p4_new~0; 944#L174-2 ~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; 873#L161-2 havoc node5_#t~ite11, node5_~m5~0;havoc node5_~m5~0;node5_~m5~0 := ~nomsg~0; 845#L186 assume 0 != ~mode5~0 % 256;node5_~m5~0 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 846#L189 assume !(node5_~m5~0 != ~nomsg~0); 952#L189-1 ~mode5~0 := 0; 870#L186-2 havoc node6_#t~ite12, node6_~m6~0;havoc node6_~m6~0;node6_~m6~0 := ~nomsg~0; 871#L211 assume !(0 != ~mode6~0 % 256); 917#L224 assume ~send6~0 != ~nomsg~0 && ~p6_new~0 == ~nomsg~0;node6_#t~ite12 := ~send6~0; 893#L224-2 ~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; 894#L211-2 havoc node7_#t~ite13, node7_~m7~0;havoc node7_~m7~0;node7_~m7~0 := ~nomsg~0; 982#L236 assume !(0 != ~mode7~0 % 256); 978#L249 assume ~send7~0 != ~nomsg~0 && ~p7_new~0 == ~nomsg~0;node7_#t~ite13 := ~send7~0; 976#L249-2 ~p7_new~0 := (if node7_#t~ite13 % 256 <= 127 then node7_#t~ite13 % 256 else node7_#t~ite13 % 256 - 256);havoc node7_#t~ite13;~mode7~0 := 1; 975#L236-2 ~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;~p7_old~0 := ~p7_new~0;~p7_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 974#L469 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0 <= 1; 973#L470 assume !(~r1~0 >= 7); 966#L473 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 + ~st7~0; 967#L474 assume ~r1~0 < 7;check_~tmp~1 := 1; 991#L469-1 check_#res := check_~tmp~1; 1026#L489 main_#t~ret44 := check_#res;main_~c1~0 := main_#t~ret44;havoc main_#t~ret44;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 1025#L581 assume !(0 == assert_~arg % 256); 1024#L576 main_#t~post45 := main_~i2~0;main_~i2~0 := 1 + main_#t~post45;havoc main_#t~post45; 863#L545-2 [2020-11-29 20:09:38,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:38,068 INFO L82 PathProgramCache]: Analyzing trace with hash 292839954, now seen corresponding path program 3 times [2020-11-29 20:09:38,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:38,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496441369] [2020-11-29 20:09:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:09:38,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:09:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:09:38,172 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:09:38,204 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:09:38,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:38,205 INFO L82 PathProgramCache]: Analyzing trace with hash 332125553, now seen corresponding path program 1 times [2020-11-29 20:09:38,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:38,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59993812] [2020-11-29 20:09:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:09:38,229 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:09:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:09:38,245 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:09:38,254 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:09:38,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:38,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1320609280, now seen corresponding path program 1 times [2020-11-29 20:09:38,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:38,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491644971] [2020-11-29 20:09:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:09:38,421 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 20:09:38,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491644971] [2020-11-29 20:09:38,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:09:38,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:09:38,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233665379] [2020-11-29 20:09:40,030 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 199 DAG size of output: 194 [2020-11-29 20:09:41,205 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 186 DAG size of output: 179 [2020-11-29 20:09:41,237 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:09:41,238 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:09:41,239 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:09:41,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:09:41,239 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:09:41,239 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:09:41,240 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:09:41,240 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:09:41,240 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.7.ufo.BOUNDED-14.pals.c_Iteration4_Loop [2020-11-29 20:09:41,240 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:09:41,241 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:09:41,279 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 20:09:41,302 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 20:09:41,308 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 20:09:41,796 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-11-29 20:09:41,801 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 20:09:41,830 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 20:09:41,847 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 20:09:41,888 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 20:09:41,898 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 20:09:41,901 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 20:09:41,909 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 20:09:41,916 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 20:09:41,920 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 20:09:41,925 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 20:09:41,932 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 20:09:41,936 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 20:09:41,951 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 20:09:41,960 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 20:09:41,969 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 20:09:41,976 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 20:09:41,984 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 20:09:41,991 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 20:09:42,000 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 20:09:42,610 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-11-29 20:09:42,950 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2020-11-29 20:12:00,550 WARN L193 SmtUtils]: Spent 2.28 m on a formula simplification. DAG size of input: 916 DAG size of output: 244 [2020-11-29 20:12:00,946 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:12:00,947 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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 20:12:00,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:12:00,964 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_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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 20:12:01,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:12:01,030 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 20:12:01,262 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:12:01,265 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:12:01,266 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:12:01,266 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:12:01,266 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:12:01,266 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:12:01,266 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:01,266 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:12:01,266 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:12:01,266 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.7.ufo.BOUNDED-14.pals.c_Iteration4_Loop [2020-11-29 20:12:01,266 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:12:01,267 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:12:01,275 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 20:12:01,294 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 20:12:01,299 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 20:12:01,330 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 20:12:01,340 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 20:12:01,345 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 20:12:01,355 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 20:12:01,362 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 20:12:01,366 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 20:12:01,370 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 20:12:01,380 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 20:12:01,385 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 20:12:01,415 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 20:12:01,419 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 20:12:01,423 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 20:12:01,427 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 20:12:01,439 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 20:12:01,448 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 20:12:01,456 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 20:12:01,470 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 20:12:01,480 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 20:12:01,492 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 20:12:02,150 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-11-29 20:12:02,999 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-11-29 20:12:03,002 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2020-11-29 20:14:21,042 WARN L193 SmtUtils]: Spent 2.29 m on a formula simplification. DAG size of input: 916 DAG size of output: 244 [2020-11-29 20:14:21,288 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:14:21,293 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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 20:14:21,303 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 Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:14:21,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,311 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:21,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:14:21,316 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:14:21,366 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 20:14:21,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,369 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,371 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:21,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:14:21,373 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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 20:14:21,424 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 20:14:21,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,427 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 20:14:21,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,433 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 20:14:21,435 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 20:14:21,441 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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 20:14:21,493 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 Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:14:21,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,495 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:21,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:14:21,503 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:14:21,555 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 20:14:21,558 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,558 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,558 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,558 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:21,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:14:21,563 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:14:21,611 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 20:14:21,614 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,614 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:21,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:14:21,621 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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) [2020-11-29 20:14:21,674 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 20:14:21,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,677 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,679 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:21,679 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:14:21,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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) [2020-11-29 20:14:21,739 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 20:14:21,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,741 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:21,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:14:21,745 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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 20:14:21,797 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 20:14:21,800 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,800 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:21,807 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 20:14:21,810 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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 20:14:21,863 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 20:14:21,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,870 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:21,871 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 20:14:21,875 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/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 20:14:21,929 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 20:14:21,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,934 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:21,934 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:14:21,936 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:14:21,996 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 20:14:21,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:14:21,998 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:14:21,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:14:21,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:14:21,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:14:21,999 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:14:22,000 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:14:22,003 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:14:22,011 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:14:22,011 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_bf3f4c08-49a8-4b8e-9ca5-607595c8bc1a/bin/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:14:22,070 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:14:22,070 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:14:22,070 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:14:22,071 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 27 Supporting invariants [] [2020-11-29 20:14:22,113 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:14:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:22,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:14:22,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:14:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:22,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:14:22,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:14:22,449 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 20:14:22,454 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 20:14:22,455 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 182 states and 251 transitions. cyclomatic complexity: 70 Second operand 3 states. [2020-11-29 20:14:22,534 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 182 states and 251 transitions. cyclomatic complexity: 70. Second operand 3 states. Result 307 states and 446 transitions. Complement of second has 4 states. [2020-11-29 20:14:22,537 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 20:14:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:14:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2020-11-29 20:14:22,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 159 transitions. Stem has 56 letters. Loop has 37 letters. [2020-11-29 20:14:22,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:14:22,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 159 transitions. Stem has 93 letters. Loop has 37 letters. [2020-11-29 20:14:22,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:14:22,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 159 transitions. Stem has 56 letters. Loop has 74 letters. [2020-11-29 20:14:22,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:14:22,552 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 307 states and 446 transitions. [2020-11-29 20:14:22,558 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:14:22,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 307 states to 0 states and 0 transitions. [2020-11-29 20:14:22,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 20:14:22,559 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 20:14:22,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 20:14:22,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:14:22,559 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:14:22,560 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:14:22,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:22,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:14:22,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:14:22,566 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2020-11-29 20:14:22,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:22,567 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 20:14:22,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:14:22,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 20:14:22,567 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:14:22,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:14:22,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 20:14:22,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 20:14:22,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 20:14:22,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:14:22,568 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:14:22,568 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:14:22,569 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:14:22,569 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 20:14:22,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:14:22,569 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:14:22,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 20:14:22,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:14:22 BoogieIcfgContainer [2020-11-29 20:14:22,576 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:14:22,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:14:22,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:14:22,577 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:14:22,578 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:09:35" (3/4) ... [2020-11-29 20:14:22,581 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:14:22,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:14:22,584 INFO L168 Benchmark]: Toolchain (without parser) took 289382.12 ms. Allocated memory was 121.6 MB in the beginning and 488.6 MB in the end (delta: 367.0 MB). Free memory was 88.8 MB in the beginning and 282.2 MB in the end (delta: -193.4 MB). Peak memory consumption was 173.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:22,584 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 77.6 MB. Free memory was 35.3 MB in the beginning and 35.3 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:14:22,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.56 ms. Allocated memory is still 121.6 MB. Free memory was 88.6 MB in the beginning and 91.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:22,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.27 ms. Allocated memory is still 121.6 MB. Free memory was 91.6 MB in the beginning and 88.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:22,588 INFO L168 Benchmark]: Boogie Preprocessor took 64.02 ms. Allocated memory is still 121.6 MB. Free memory was 88.7 MB in the beginning and 86.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:22,592 INFO L168 Benchmark]: RCFGBuilder took 1585.46 ms. Allocated memory is still 121.6 MB. Free memory was 86.0 MB in the beginning and 96.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:22,593 INFO L168 Benchmark]: BuchiAutomizer took 287012.46 ms. Allocated memory was 121.6 MB in the beginning and 488.6 MB in the end (delta: 367.0 MB). Free memory was 96.4 MB in the beginning and 283.3 MB in the end (delta: -186.8 MB). Peak memory consumption was 178.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:22,597 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 488.6 MB. Free memory was 283.3 MB in the beginning and 282.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:22,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 77.6 MB. Free memory was 35.3 MB in the beginning and 35.3 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 609.56 ms. Allocated memory is still 121.6 MB. Free memory was 88.6 MB in the beginning and 91.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.27 ms. Allocated memory is still 121.6 MB. Free memory was 91.6 MB in the beginning and 88.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.02 ms. Allocated memory is still 121.6 MB. Free memory was 88.7 MB in the beginning and 86.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1585.46 ms. Allocated memory is still 121.6 MB. Free memory was 86.0 MB in the beginning and 96.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 287012.46 ms. Allocated memory was 121.6 MB in the beginning and 488.6 MB in the end (delta: 367.0 MB). Free memory was 96.4 MB in the beginning and 283.3 MB in the end (delta: -186.8 MB). Peak memory consumption was 178.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.01 ms. Allocated memory is still 488.6 MB. Free memory was 283.3 MB in the beginning and 282.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. 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 + 27 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 286.9s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 285.6s. Construction of modules took 0.2s. 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 182 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 779 SDtfs, 253 SDslu, 1316 SDs, 0 SdLazy, 36 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital291 mio100 ax100 hnf98 lsp81 ukn69 mio100 lsp100 div157 bol100 ite100 ukn100 eq174 hnf71 smp100 dnf60922 smp12 tf100 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms 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...