./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/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 8044e0aeebe72762497fc5ccaff76a34eb4c9821 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:58:48,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:58:48,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:58:48,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:58:48,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:58:48,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:58:48,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:58:48,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:58:48,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:58:48,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:58:48,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:58:48,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:58:48,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:58:48,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:58:48,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:58:48,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:58:48,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:58:48,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:58:48,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:58:48,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:58:48,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:58:48,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:58:48,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:58:48,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:58:48,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:58:48,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:58:48,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:58:48,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:58:48,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:58:48,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:58:48,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:58:48,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:58:48,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:58:48,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:58:48,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:58:48,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:58:48,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:58:48,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:58:48,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:58:48,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:58:48,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:58:48,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-15 23:58:48,257 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:58:48,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:58:48,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:58:48,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:58:48,259 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:58:48,259 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:58:48,260 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:58:48,260 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:58:48,260 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:58:48,260 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:58:48,260 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:58:48,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:58:48,261 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:58:48,261 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:58:48,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:58:48,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:58:48,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:58:48,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:58:48,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:58:48,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:58:48,263 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:58:48,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:58:48,263 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:58:48,264 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:58:48,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:58:48,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:58:48,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:58:48,265 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:58:48,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:58:48,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:58:48,266 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:58:48,266 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:58:48,267 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_5c704976-6456-4c40-b212-cebd80703009/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 -> 8044e0aeebe72762497fc5ccaff76a34eb4c9821 [2019-11-15 23:58:48,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:58:48,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:58:48,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:58:48,309 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:58:48,309 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:58:48,310 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/bin/uautomizer/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2019-11-15 23:58:48,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/bin/uautomizer/data/93208ecaa/374d63a2f25f442ebd7a7f3343b662fa/FLAGc5e216df6 [2019-11-15 23:58:48,829 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:58:48,830 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2019-11-15 23:58:48,843 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/bin/uautomizer/data/93208ecaa/374d63a2f25f442ebd7a7f3343b662fa/FLAGc5e216df6 [2019-11-15 23:58:49,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/bin/uautomizer/data/93208ecaa/374d63a2f25f442ebd7a7f3343b662fa [2019-11-15 23:58:49,209 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:58:49,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:58:49,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:58:49,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:58:49,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:58:49,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44675c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49, skipping insertion in model container [2019-11-15 23:58:49,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,228 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:58:49,255 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:58:49,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:58:49,583 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:58:49,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:58:49,662 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:58:49,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49 WrapperNode [2019-11-15 23:58:49,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:58:49,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:58:49,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:58:49,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:58:49,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:58:49,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:58:49,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:58:49,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:58:49,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (1/1) ... [2019-11-15 23:58:49,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:58:49,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:58:49,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:58:49,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:58:49,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/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 [2019-11-15 23:58:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:58:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:58:50,497 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:58:50,498 INFO L284 CfgBuilder]: Removed 19 assume(true) statements. [2019-11-15 23:58:50,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:58:50 BoogieIcfgContainer [2019-11-15 23:58:50,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:58:50,500 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:58:50,500 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:58:50,503 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:58:50,504 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:58:50,504 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:58:49" (1/3) ... [2019-11-15 23:58:50,505 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41ff422d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:58:50, skipping insertion in model container [2019-11-15 23:58:50,505 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:58:50,505 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:49" (2/3) ... [2019-11-15 23:58:50,505 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41ff422d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:58:50, skipping insertion in model container [2019-11-15 23:58:50,505 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:58:50,506 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:58:50" (3/3) ... [2019-11-15 23:58:50,507 INFO L371 chiAutomizerObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2019-11-15 23:58:50,557 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:58:50,557 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:58:50,558 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:58:50,558 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:58:50,558 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:58:50,558 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:58:50,558 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:58:50,558 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:58:50,575 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states. [2019-11-15 23:58:50,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2019-11-15 23:58:50,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:58:50,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:58:50,622 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-15 23:58:50,623 INFO L850 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] [2019-11-15 23:58:50,623 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:58:50,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states. [2019-11-15 23:58:50,628 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2019-11-15 23:58:50,629 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:58:50,629 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:58:50,630 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-15 23:58:50,630 INFO L850 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] [2019-11-15 23:58:50,637 INFO L791 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRYtrue ~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;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[3 := #funAddr~node4.base], ~nodes~0.offset[3 := #funAddr~node4.offset]; 10#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~ret21, main_#t~ret22, main_#t~post23, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet4;havoc main_#t~nondet4;~id1~0 := main_#t~nondet5;havoc main_#t~nondet5;~st1~0 := main_#t~nondet6;havoc main_#t~nondet6;~send1~0 := main_#t~nondet7;havoc main_#t~nondet7;~mode1~0 := main_#t~nondet8;havoc main_#t~nondet8;~id2~0 := main_#t~nondet9;havoc main_#t~nondet9;~st2~0 := main_#t~nondet10;havoc main_#t~nondet10;~send2~0 := main_#t~nondet11;havoc main_#t~nondet11;~mode2~0 := main_#t~nondet12;havoc main_#t~nondet12;~id3~0 := main_#t~nondet13;havoc main_#t~nondet13;~st3~0 := main_#t~nondet14;havoc main_#t~nondet14;~send3~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode3~0 := main_#t~nondet16;havoc main_#t~nondet16;~id4~0 := main_#t~nondet17;havoc main_#t~nondet17;~st4~0 := main_#t~nondet18;havoc main_#t~nondet18;~send4~0 := main_#t~nondet19;havoc main_#t~nondet19;~mode4~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 22#L209true assume !(0 == ~r1~0);init_~tmp~0 := 0; 20#L209-1true init_#res := init_~tmp~0; 75#L302true main_#t~ret21 := init_#res;main_~i2~0 := main_#t~ret21;havoc main_#t~ret21;assume 0 != main_~i2~0;~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;main_~i2~0 := 0; 62#L368-2true [2019-11-15 23:58:50,637 INFO L793 eck$LassoCheckResult]: Loop: 62#L368-2true assume !!(main_~i2~0 < 8);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 31#L106true 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 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 39#L110true assume !(node1_~m1~0 != ~nomsg~0); 35#L110-1true ~mode1~0 := 0; 7#L106-2true havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 65#L134true assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 48#L137true assume !(node2_~m2~0 != ~nomsg~0); 47#L137-1true ~mode2~0 := 0; 76#L134-2true havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 69#L159true assume !(0 != ~mode3~0 % 256); 34#L172true assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite2 := ~send3~0; 32#L172-2true ~p3_new~0 := (if node3_#t~ite2 % 256 <= 127 then node3_#t~ite2 % 256 else node3_#t~ite2 % 256 - 256);havoc node3_#t~ite2;~mode3~0 := 1; 46#L159-2true havoc node4_#t~ite3, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 58#L184true assume !(0 != ~mode4~0 % 256); 3#L197true assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite3 := ~send4~0; 16#L197-2true ~p4_new~0 := (if node4_#t~ite3 % 256 <= 127 then node4_#t~ite3 % 256 else node4_#t~ite3 % 256 - 256);havoc node4_#t~ite3;~mode4~0 := 1; 54#L184-2true ~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;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 6#L310true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1 := 0; 8#L310-1true check_#res := check_~tmp~1; 49#L330true main_#t~ret22 := check_#res;main_~c1~0 := main_#t~ret22;havoc main_#t~ret22;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 28#L395true assume !(0 == assert_~arg % 256); 73#L390true main_#t~post23 := main_~i2~0;main_~i2~0 := 1 + main_#t~post23;havoc main_#t~post23; 62#L368-2true [2019-11-15 23:58:50,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:50,642 INFO L82 PathProgramCache]: Analyzing trace with hash 28826826, now seen corresponding path program 1 times [2019-11-15 23:58:50,649 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:58:50,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727486794] [2019-11-15 23:58:50,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:50,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:50,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:58:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:50,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727486794] [2019-11-15 23:58:50,824 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:50,824 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:58:50,825 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193353083] [2019-11-15 23:58:50,828 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 23:58:50,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:50,829 INFO L82 PathProgramCache]: Analyzing trace with hash -293702655, now seen corresponding path program 1 times [2019-11-15 23:58:50,829 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:58:50,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894710965] [2019-11-15 23:58:50,829 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:50,829 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:50,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:58:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:50,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894710965] [2019-11-15 23:58:50,998 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:50,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:58:50,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848824569] [2019-11-15 23:58:51,000 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 23:58:51,004 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:58:51,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:58:51,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:58:51,021 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2019-11-15 23:58:51,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:51,133 INFO L93 Difference]: Finished difference Result 76 states and 123 transitions. [2019-11-15 23:58:51,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:58:51,136 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 123 transitions. [2019-11-15 23:58:51,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2019-11-15 23:58:51,147 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 69 states and 94 transitions. [2019-11-15 23:58:51,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2019-11-15 23:58:51,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2019-11-15 23:58:51,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 94 transitions. [2019-11-15 23:58:51,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:58:51,151 INFO L688 BuchiCegarLoop]: Abstraction has 69 states and 94 transitions. [2019-11-15 23:58:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states and 94 transitions. [2019-11-15 23:58:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2019-11-15 23:58:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-15 23:58:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2019-11-15 23:58:51,189 INFO L711 BuchiCegarLoop]: Abstraction has 69 states and 94 transitions. [2019-11-15 23:58:51,189 INFO L591 BuchiCegarLoop]: Abstraction has 69 states and 94 transitions. [2019-11-15 23:58:51,189 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:58:51,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states and 94 transitions. [2019-11-15 23:58:51,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2019-11-15 23:58:51,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:58:51,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:58:51,194 INFO L849 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] [2019-11-15 23:58:51,194 INFO L850 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] [2019-11-15 23:58:51,194 INFO L791 eck$LassoCheckResult]: Stem: 212#ULTIMATE.startENTRY ~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;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[3 := #funAddr~node4.base], ~nodes~0.offset[3 := #funAddr~node4.offset]; 179#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~ret21, main_#t~ret22, main_#t~post23, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet4;havoc main_#t~nondet4;~id1~0 := main_#t~nondet5;havoc main_#t~nondet5;~st1~0 := main_#t~nondet6;havoc main_#t~nondet6;~send1~0 := main_#t~nondet7;havoc main_#t~nondet7;~mode1~0 := main_#t~nondet8;havoc main_#t~nondet8;~id2~0 := main_#t~nondet9;havoc main_#t~nondet9;~st2~0 := main_#t~nondet10;havoc main_#t~nondet10;~send2~0 := main_#t~nondet11;havoc main_#t~nondet11;~mode2~0 := main_#t~nondet12;havoc main_#t~nondet12;~id3~0 := main_#t~nondet13;havoc main_#t~nondet13;~st3~0 := main_#t~nondet14;havoc main_#t~nondet14;~send3~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode3~0 := main_#t~nondet16;havoc main_#t~nondet16;~id4~0 := main_#t~nondet17;havoc main_#t~nondet17;~st4~0 := main_#t~nondet18;havoc main_#t~nondet18;~send4~0 := main_#t~nondet19;havoc main_#t~nondet19;~mode4~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 180#L209 assume 0 == ~r1~0; 198#L210 assume ~id1~0 >= 0; 222#L211 assume 0 == ~st1~0; 177#L212 assume ~send1~0 == ~id1~0; 178#L213 assume 0 == ~mode1~0 % 256; 226#L214 assume ~id2~0 >= 0; 184#L215 assume 0 == ~st2~0; 185#L216 assume ~send2~0 == ~id2~0; 215#L217 assume 0 == ~mode2~0 % 256; 230#L218 assume ~id3~0 >= 0; 167#L219 assume 0 == ~st3~0; 168#L220 assume ~send3~0 == ~id3~0; 199#L221 assume 0 == ~mode3~0 % 256; 224#L222 assume ~id4~0 >= 0; 205#L223 assume 0 == ~st4~0; 206#L224 assume ~send4~0 == ~id4~0; 227#L225 assume 0 == ~mode4~0 % 256; 186#L226 assume ~id1~0 != ~id2~0; 187#L227 assume ~id1~0 != ~id3~0; 216#L228 assume ~id1~0 != ~id4~0; 231#L229 assume ~id2~0 != ~id3~0; 169#L230 assume ~id2~0 != ~id4~0; 170#L231 assume ~id3~0 != ~id4~0;init_~tmp~0 := 1; 192#L209-1 init_#res := init_~tmp~0; 193#L302 main_#t~ret21 := init_#res;main_~i2~0 := main_#t~ret21;havoc main_#t~ret21;assume 0 != main_~i2~0;~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;main_~i2~0 := 0; 232#L368-2 [2019-11-15 23:58:51,195 INFO L793 eck$LassoCheckResult]: Loop: 232#L368-2 assume !!(main_~i2~0 < 8);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 209#L106 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 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 210#L110 assume !(node1_~m1~0 != ~nomsg~0); 201#L110-1 ~mode1~0 := 0; 174#L106-2 havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 175#L134 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 225#L137 assume !(node2_~m2~0 != ~nomsg~0); 182#L137-1 ~mode2~0 := 0; 197#L134-2 havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 233#L159 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 228#L162 assume !(node3_~m3~0 != ~nomsg~0); 220#L162-1 ~mode3~0 := 0; 208#L159-2 havoc node4_#t~ite3, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 223#L184 assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 194#L187 assume !(node4_~m4~0 != ~nomsg~0); 191#L187-1 ~mode4~0 := 0; 188#L184-2 ~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;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 171#L310 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1 := 0; 172#L310-1 check_#res := check_~tmp~1; 176#L330 main_#t~ret22 := check_#res;main_~c1~0 := main_#t~ret22;havoc main_#t~ret22;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 202#L395 assume !(0 == assert_~arg % 256); 203#L390 main_#t~post23 := main_~i2~0;main_~i2~0 := 1 + main_#t~post23;havoc main_#t~post23; 232#L368-2 [2019-11-15 23:58:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:51,195 INFO L82 PathProgramCache]: Analyzing trace with hash 370924325, now seen corresponding path program 1 times [2019-11-15 23:58:51,196 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:58:51,196 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8940247] [2019-11-15 23:58:51,196 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,196 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:58:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:58:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:58:51,337 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:58:51,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:51,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1849481195, now seen corresponding path program 1 times [2019-11-15 23:58:51,339 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:58:51,339 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361098649] [2019-11-15 23:58:51,339 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,339 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:58:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:51,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361098649] [2019-11-15 23:58:51,445 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:51,445 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:58:51,445 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163390230] [2019-11-15 23:58:51,446 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 23:58:51,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:58:51,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:58:51,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:58:51,447 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. cyclomatic complexity: 26 Second operand 5 states. [2019-11-15 23:58:51,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:51,542 INFO L93 Difference]: Finished difference Result 72 states and 96 transitions. [2019-11-15 23:58:51,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:58:51,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 96 transitions. [2019-11-15 23:58:51,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2019-11-15 23:58:51,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 69 states and 91 transitions. [2019-11-15 23:58:51,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2019-11-15 23:58:51,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2019-11-15 23:58:51,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 91 transitions. [2019-11-15 23:58:51,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:58:51,557 INFO L688 BuchiCegarLoop]: Abstraction has 69 states and 91 transitions. [2019-11-15 23:58:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states and 91 transitions. [2019-11-15 23:58:51,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2019-11-15 23:58:51,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-15 23:58:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2019-11-15 23:58:51,568 INFO L711 BuchiCegarLoop]: Abstraction has 69 states and 91 transitions. [2019-11-15 23:58:51,569 INFO L591 BuchiCegarLoop]: Abstraction has 69 states and 91 transitions. [2019-11-15 23:58:51,569 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 23:58:51,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states and 91 transitions. [2019-11-15 23:58:51,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2019-11-15 23:58:51,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:58:51,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:58:51,580 INFO L849 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] [2019-11-15 23:58:51,582 INFO L850 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] [2019-11-15 23:58:51,582 INFO L791 eck$LassoCheckResult]: Stem: 365#ULTIMATE.startENTRY ~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;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[3 := #funAddr~node4.base], ~nodes~0.offset[3 := #funAddr~node4.offset]; 332#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~ret21, main_#t~ret22, main_#t~post23, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet4;havoc main_#t~nondet4;~id1~0 := main_#t~nondet5;havoc main_#t~nondet5;~st1~0 := main_#t~nondet6;havoc main_#t~nondet6;~send1~0 := main_#t~nondet7;havoc main_#t~nondet7;~mode1~0 := main_#t~nondet8;havoc main_#t~nondet8;~id2~0 := main_#t~nondet9;havoc main_#t~nondet9;~st2~0 := main_#t~nondet10;havoc main_#t~nondet10;~send2~0 := main_#t~nondet11;havoc main_#t~nondet11;~mode2~0 := main_#t~nondet12;havoc main_#t~nondet12;~id3~0 := main_#t~nondet13;havoc main_#t~nondet13;~st3~0 := main_#t~nondet14;havoc main_#t~nondet14;~send3~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode3~0 := main_#t~nondet16;havoc main_#t~nondet16;~id4~0 := main_#t~nondet17;havoc main_#t~nondet17;~st4~0 := main_#t~nondet18;havoc main_#t~nondet18;~send4~0 := main_#t~nondet19;havoc main_#t~nondet19;~mode4~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 333#L209 assume 0 == ~r1~0; 351#L210 assume ~id1~0 >= 0; 375#L211 assume 0 == ~st1~0; 330#L212 assume ~send1~0 == ~id1~0; 331#L213 assume 0 == ~mode1~0 % 256; 379#L214 assume ~id2~0 >= 0; 337#L215 assume 0 == ~st2~0; 338#L216 assume ~send2~0 == ~id2~0; 368#L217 assume 0 == ~mode2~0 % 256; 383#L218 assume ~id3~0 >= 0; 320#L219 assume 0 == ~st3~0; 321#L220 assume ~send3~0 == ~id3~0; 352#L221 assume 0 == ~mode3~0 % 256; 376#L222 assume ~id4~0 >= 0; 358#L223 assume 0 == ~st4~0; 359#L224 assume ~send4~0 == ~id4~0; 380#L225 assume 0 == ~mode4~0 % 256; 339#L226 assume ~id1~0 != ~id2~0; 340#L227 assume ~id1~0 != ~id3~0; 369#L228 assume ~id1~0 != ~id4~0; 384#L229 assume ~id2~0 != ~id3~0; 322#L230 assume ~id2~0 != ~id4~0; 323#L231 assume ~id3~0 != ~id4~0;init_~tmp~0 := 1; 345#L209-1 init_#res := init_~tmp~0; 346#L302 main_#t~ret21 := init_#res;main_~i2~0 := main_#t~ret21;havoc main_#t~ret21;assume 0 != main_~i2~0;~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;main_~i2~0 := 0; 385#L368-2 [2019-11-15 23:58:51,583 INFO L793 eck$LassoCheckResult]: Loop: 385#L368-2 assume !!(main_~i2~0 < 8);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 360#L106 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 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 361#L110 assume !(node1_~m1~0 != ~nomsg~0); 354#L110-1 ~mode1~0 := 0; 326#L106-2 havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 327#L134 assume !(0 != ~mode2~0 % 256); 357#L147 assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite1 := ~send2~0; 349#L147-2 ~p2_new~0 := (if node2_#t~ite1 % 256 <= 127 then node2_#t~ite1 % 256 else node2_#t~ite1 % 256 - 256);havoc node2_#t~ite1;~mode2~0 := 1; 350#L134-2 havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 386#L159 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 381#L162 assume !(node3_~m3~0 != ~nomsg~0); 373#L162-1 ~mode3~0 := 0; 364#L159-2 havoc node4_#t~ite3, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 377#L184 assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 347#L187 assume !(node4_~m4~0 != ~nomsg~0); 344#L187-1 ~mode4~0 := 0; 341#L184-2 ~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;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 324#L310 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 325#L311 assume ~r1~0 >= 4; 343#L315 assume ~r1~0 < 4;check_~tmp~1 := 1; 328#L310-1 check_#res := check_~tmp~1; 329#L330 main_#t~ret22 := check_#res;main_~c1~0 := main_#t~ret22;havoc main_#t~ret22;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 355#L395 assume !(0 == assert_~arg % 256); 356#L390 main_#t~post23 := main_~i2~0;main_~i2~0 := 1 + main_#t~post23;havoc main_#t~post23; 385#L368-2 [2019-11-15 23:58:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:51,583 INFO L82 PathProgramCache]: Analyzing trace with hash 370924325, now seen corresponding path program 2 times [2019-11-15 23:58:51,584 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:58:51,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754619828] [2019-11-15 23:58:51,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:58:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:58:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:58:51,643 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:58:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:51,644 INFO L82 PathProgramCache]: Analyzing trace with hash 544955963, now seen corresponding path program 1 times [2019-11-15 23:58:51,645 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:58:51,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810458954] [2019-11-15 23:58:51,645 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,645 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:58:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:51,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810458954] [2019-11-15 23:58:51,680 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:51,680 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:58:51,680 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949100226] [2019-11-15 23:58:51,681 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 23:58:51,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:58:51,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:58:51,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:58:51,682 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. cyclomatic complexity: 23 Second operand 3 states. [2019-11-15 23:58:51,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:51,720 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2019-11-15 23:58:51,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:58:51,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 144 transitions. [2019-11-15 23:58:51,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2019-11-15 23:58:51,724 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 105 states and 144 transitions. [2019-11-15 23:58:51,725 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 105 [2019-11-15 23:58:51,725 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2019-11-15 23:58:51,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 144 transitions. [2019-11-15 23:58:51,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:58:51,727 INFO L688 BuchiCegarLoop]: Abstraction has 105 states and 144 transitions. [2019-11-15 23:58:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 144 transitions. [2019-11-15 23:58:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2019-11-15 23:58:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-15 23:58:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 144 transitions. [2019-11-15 23:58:51,736 INFO L711 BuchiCegarLoop]: Abstraction has 105 states and 144 transitions. [2019-11-15 23:58:51,736 INFO L591 BuchiCegarLoop]: Abstraction has 105 states and 144 transitions. [2019-11-15 23:58:51,736 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 23:58:51,736 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 144 transitions. [2019-11-15 23:58:51,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2019-11-15 23:58:51,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:58:51,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:58:51,740 INFO L849 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] [2019-11-15 23:58:51,740 INFO L850 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] [2019-11-15 23:58:51,740 INFO L791 eck$LassoCheckResult]: Stem: 546#ULTIMATE.startENTRY ~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;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[3 := #funAddr~node4.base], ~nodes~0.offset[3 := #funAddr~node4.offset]; 512#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~ret21, main_#t~ret22, main_#t~post23, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet4;havoc main_#t~nondet4;~id1~0 := main_#t~nondet5;havoc main_#t~nondet5;~st1~0 := main_#t~nondet6;havoc main_#t~nondet6;~send1~0 := main_#t~nondet7;havoc main_#t~nondet7;~mode1~0 := main_#t~nondet8;havoc main_#t~nondet8;~id2~0 := main_#t~nondet9;havoc main_#t~nondet9;~st2~0 := main_#t~nondet10;havoc main_#t~nondet10;~send2~0 := main_#t~nondet11;havoc main_#t~nondet11;~mode2~0 := main_#t~nondet12;havoc main_#t~nondet12;~id3~0 := main_#t~nondet13;havoc main_#t~nondet13;~st3~0 := main_#t~nondet14;havoc main_#t~nondet14;~send3~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode3~0 := main_#t~nondet16;havoc main_#t~nondet16;~id4~0 := main_#t~nondet17;havoc main_#t~nondet17;~st4~0 := main_#t~nondet18;havoc main_#t~nondet18;~send4~0 := main_#t~nondet19;havoc main_#t~nondet19;~mode4~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 513#L209 assume 0 == ~r1~0; 529#L210 assume ~id1~0 >= 0; 556#L211 assume 0 == ~st1~0; 510#L212 assume ~send1~0 == ~id1~0; 511#L213 assume 0 == ~mode1~0 % 256; 561#L214 assume ~id2~0 >= 0; 517#L215 assume 0 == ~st2~0; 518#L216 assume ~send2~0 == ~id2~0; 548#L217 assume 0 == ~mode2~0 % 256; 565#L218 assume ~id3~0 >= 0; 500#L219 assume 0 == ~st3~0; 501#L220 assume ~send3~0 == ~id3~0; 532#L221 assume 0 == ~mode3~0 % 256; 557#L222 assume ~id4~0 >= 0; 539#L223 assume 0 == ~st4~0; 540#L224 assume ~send4~0 == ~id4~0; 562#L225 assume 0 == ~mode4~0 % 256; 519#L226 assume ~id1~0 != ~id2~0; 520#L227 assume ~id1~0 != ~id3~0; 550#L228 assume ~id1~0 != ~id4~0; 566#L229 assume ~id2~0 != ~id3~0; 502#L230 assume ~id2~0 != ~id4~0; 503#L231 assume ~id3~0 != ~id4~0;init_~tmp~0 := 1; 525#L209-1 init_#res := init_~tmp~0; 526#L302 main_#t~ret21 := init_#res;main_~i2~0 := main_#t~ret21;havoc main_#t~ret21;assume 0 != main_~i2~0;~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;main_~i2~0 := 0; 567#L368-2 [2019-11-15 23:58:51,740 INFO L793 eck$LassoCheckResult]: Loop: 567#L368-2 assume !!(main_~i2~0 < 8);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 541#L106 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 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 542#L110 assume !(node1_~m1~0 != ~nomsg~0); 535#L110-1 ~mode1~0 := 0; 506#L106-2 havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 507#L134 assume !(0 != ~mode2~0 % 256); 538#L147 assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite1 := ~send2~0; 530#L147-2 ~p2_new~0 := (if node2_#t~ite1 % 256 <= 127 then node2_#t~ite1 % 256 else node2_#t~ite1 % 256 - 256);havoc node2_#t~ite1;~mode2~0 := 1; 531#L134-2 havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 568#L159 assume !(0 != ~mode3~0 % 256); 569#L172 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite2 := ~send3~0; 582#L172-2 ~p3_new~0 := (if node3_#t~ite2 % 256 <= 127 then node3_#t~ite2 % 256 else node3_#t~ite2 % 256 - 256);havoc node3_#t~ite2;~mode3~0 := 1; 581#L159-2 havoc node4_#t~ite3, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 580#L184 assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 578#L187 assume !(node4_~m4~0 != ~nomsg~0); 574#L187-1 ~mode4~0 := 0; 573#L184-2 ~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;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 572#L310 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 571#L311 assume !(~r1~0 >= 4); 522#L314 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0; 523#L315 assume ~r1~0 < 4;check_~tmp~1 := 1; 508#L310-1 check_#res := check_~tmp~1; 509#L330 main_#t~ret22 := check_#res;main_~c1~0 := main_#t~ret22;havoc main_#t~ret22;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 536#L395 assume !(0 == assert_~arg % 256); 537#L390 main_#t~post23 := main_~i2~0;main_~i2~0 := 1 + main_#t~post23;havoc main_#t~post23; 567#L368-2 [2019-11-15 23:58:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:51,741 INFO L82 PathProgramCache]: Analyzing trace with hash 370924325, now seen corresponding path program 3 times [2019-11-15 23:58:51,741 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:58:51,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644624380] [2019-11-15 23:58:51,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:58:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:58:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:58:51,801 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:58:51,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:51,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1447456360, now seen corresponding path program 1 times [2019-11-15 23:58:51,802 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:58:51,802 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656856147] [2019-11-15 23:58:51,802 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,802 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:58:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:58:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:58:51,842 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:58:51,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:51,842 INFO L82 PathProgramCache]: Analyzing trace with hash -248077372, now seen corresponding path program 1 times [2019-11-15 23:58:51,843 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:58:51,843 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394367863] [2019-11-15 23:58:51,843 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,843 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:58:51,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:58:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:51,947 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394367863] [2019-11-15 23:58:51,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:51,950 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:58:51,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575434648] [2019-11-15 23:58:52,560 WARN L191 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 128 [2019-11-15 23:58:55,448 WARN L191 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 132 DAG size of output: 121 [2019-11-15 23:58:55,488 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:58:55,489 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:58:55,489 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:58:55,490 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:58:55,490 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:58:55,490 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:58:55,490 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:58:55,491 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:58:55,491 INFO L131 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4.1.ufo.BOUNDED-8.pals.c_Iteration4_Loop [2019-11-15 23:58:55,491 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:58:55,492 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:58:55,514 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-11-15 23:58:55,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,938 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-11-15 23:58:55,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:55,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:58:56,452 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-11-15 23:58:56,469 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-15 23:59:01,388 WARN L191 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 156 DAG size of output: 108 [2019-11-15 23:59:01,436 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:59:01,436 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:59:01,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:59:01,452 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c704976-6456-4c40-b212-cebd80703009/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:59:01,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:59:01,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:59:01,582 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:59:01,584 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:59:01,584 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:59:01,584 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:59:01,584 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:59:01,584 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:59:01,584 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:59:01,585 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:59:01,585 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:59:01,585 INFO L131 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4.1.ufo.BOUNDED-8.pals.c_Iteration4_Loop [2019-11-15 23:59:01,585 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:59:01,585 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:59:01,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-11-15 23:59:01,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,849 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-11-15 23:59:01,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:01,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:59:02,167 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-11-15 23:59:02,174 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-15 23:59:06,914 WARN L191 SmtUtils]: Spent 4.57 s on a formula simplification. DAG size of input: 156 DAG size of output: 108 [2019-11-15 23:59:06,940 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:59:06,946 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:59:06,948 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 [2019-11-15 23:59:06,950 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:59:06,950 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:59:06,951 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:59:06,951 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:59:06,952 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:59:06,954 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:59:06,954 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:59:06,959 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:59:06,959 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 [2019-11-15 23:59:06,960 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:59:06,960 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:59:06,961 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:59:06,961 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:59:06,961 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:59:06,962 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:59:06,962 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:59:06,964 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:59:06,968 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:59:06,968 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 23:59:06,970 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:59:06,970 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:59:06,971 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:59:06,971 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 15 Supporting invariants [] [2019-11-15 23:59:06,973 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:59:07,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:59:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:59:07,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:59:07,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:59:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:59:07,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:59:07,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:59:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:59:07,136 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 [2019-11-15 23:59:07,137 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 105 states and 144 transitions. cyclomatic complexity: 40 Second operand 3 states. [2019-11-15 23:59:07,192 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 105 states and 144 transitions. cyclomatic complexity: 40. Second operand 3 states. Result 182 states and 261 transitions. Complement of second has 4 states. [2019-11-15 23:59:07,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:59:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:59:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2019-11-15 23:59:07,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 27 letters. Loop has 25 letters. [2019-11-15 23:59:07,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:59:07,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 52 letters. Loop has 25 letters. [2019-11-15 23:59:07,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:59:07,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 27 letters. Loop has 50 letters. [2019-11-15 23:59:07,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:59:07,212 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 261 transitions. [2019-11-15 23:59:07,215 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:59:07,216 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 0 states and 0 transitions. [2019-11-15 23:59:07,216 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:59:07,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:59:07,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:59:07,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:59:07,217 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:59:07,217 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:59:07,217 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:59:07,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:59:07,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:59:07,218 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2019-11-15 23:59:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:59:07,218 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-15 23:59:07,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:59:07,219 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-15 23:59:07,219 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:59:07,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:59:07,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:59:07,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:59:07,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:59:07,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:59:07,220 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:59:07,220 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:59:07,220 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:59:07,220 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 23:59:07,221 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:59:07,222 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:59:07,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:59:07,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:59:07 BoogieIcfgContainer [2019-11-15 23:59:07,232 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:59:07,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:59:07,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:59:07,233 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:59:07,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:58:50" (3/4) ... [2019-11-15 23:59:07,237 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:59:07,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:59:07,241 INFO L168 Benchmark]: Toolchain (without parser) took 18028.52 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 342.9 MB). Free memory was 938.4 MB in the beginning and 957.7 MB in the end (delta: -19.4 MB). Peak memory consumption was 323.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:59:07,241 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:59:07,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:59:07,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:59:07,251 INFO L168 Benchmark]: Boogie Preprocessor took 31.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:59:07,252 INFO L168 Benchmark]: RCFGBuilder took 747.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:59:07,253 INFO L168 Benchmark]: BuchiAutomizer took 16732.35 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 210.8 MB). Free memory was 1.1 GB in the beginning and 957.7 MB in the end (delta: 125.0 MB). Peak memory consumption was 335.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:59:07,253 INFO L168 Benchmark]: Witness Printer took 5.44 ms. Allocated memory is still 1.4 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:59:07,263 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 451.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 747.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 16732.35 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 210.8 MB). Free memory was 1.1 GB in the beginning and 957.7 MB in the end (delta: 125.0 MB). Peak memory consumption was 335.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.44 ms. Allocated memory is still 1.4 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 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 + 15 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 16.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 15.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. 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 105 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 438 SDtfs, 207 SDslu, 628 SDs, 0 SdLazy, 32 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital1210 mio100 ax104 hnf100 lsp11 ukn67 mio100 lsp100 div162 bol100 ite100 ukn100 eq171 hnf69 smp100 dnf5114 smp24 tf100 neg98 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...