./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/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 b48447b6a7618cb0e36862bcd70ec2f51928799c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:37:42,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:37:42,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:37:42,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:37:42,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:37:42,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:37:42,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:37:42,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:37:42,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:37:42,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:37:42,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:37:42,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:37:42,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:37:42,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:37:42,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:37:42,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:37:42,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:37:42,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:37:42,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:37:42,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:37:42,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:37:42,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:37:42,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:37:42,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:37:42,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:37:42,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:37:42,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:37:42,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:37:42,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:37:42,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:37:42,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:37:42,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:37:42,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:37:42,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:37:42,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:37:42,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:37:42,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:37:42,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:37:42,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:37:42,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:37:42,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:37:42,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-19 23:37:43,015 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:37:43,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:37:43,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:37:43,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:37:43,016 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:37:43,016 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 23:37:43,017 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 23:37:43,017 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 23:37:43,017 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 23:37:43,017 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 23:37:43,023 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 23:37:43,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:37:43,024 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:37:43,024 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:37:43,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:37:43,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:37:43,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:37:43,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 23:37:43,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 23:37:43,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 23:37:43,025 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:37:43,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:37:43,026 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 23:37:43,026 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:37:43,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 23:37:43,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:37:43,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:37:43,027 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 23:37:43,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:37:43,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:37:43,028 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 23:37:43,029 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 23:37:43,029 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_8b779cb2-aeb6-40ed-bf07-2b324576e103/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 -> b48447b6a7618cb0e36862bcd70ec2f51928799c [2019-11-19 23:37:43,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:37:43,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:37:43,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:37:43,202 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:37:43,203 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:37:43,203 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c [2019-11-19 23:37:43,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/data/8db8e2c65/631acaa26e234430a1d25cef32d2d4f0/FLAGaee89fa74 [2019-11-19 23:37:43,719 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:37:43,720 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c [2019-11-19 23:37:43,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/data/8db8e2c65/631acaa26e234430a1d25cef32d2d4f0/FLAGaee89fa74 [2019-11-19 23:37:44,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/data/8db8e2c65/631acaa26e234430a1d25cef32d2d4f0 [2019-11-19 23:37:44,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:37:44,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:37:44,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:37:44,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:37:44,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:37:44,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55275a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44, skipping insertion in model container [2019-11-19 23:37:44,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,241 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:37:44,283 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:37:44,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:37:44,528 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:37:44,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:37:44,593 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:37:44,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44 WrapperNode [2019-11-19 23:37:44,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:37:44,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:37:44,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:37:44,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:37:44,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:37:44,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:37:44,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:37:44,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:37:44,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (1/1) ... [2019-11-19 23:37:44,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:37:44,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:37:44,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:37:44,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:37:44,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/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 [2019-11-19 23:37:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:37:44,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:37:45,272 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:37:45,272 INFO L285 CfgBuilder]: Removed 19 assume(true) statements. [2019-11-19 23:37:45,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:37:45 BoogieIcfgContainer [2019-11-19 23:37:45,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:37:45,274 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 23:37:45,274 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 23:37:45,277 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 23:37:45,277 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:37:45,278 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 11:37:44" (1/3) ... [2019-11-19 23:37:45,278 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9e53685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:37:45, skipping insertion in model container [2019-11-19 23:37:45,278 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:37:45,279 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:37:44" (2/3) ... [2019-11-19 23:37:45,279 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9e53685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:37:45, skipping insertion in model container [2019-11-19 23:37:45,279 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:37:45,279 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:37:45" (3/3) ... [2019-11-19 23:37:45,284 INFO L371 chiAutomizerObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c [2019-11-19 23:37:45,331 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 23:37:45,331 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 23:37:45,331 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 23:37:45,333 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:37:45,333 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:37:45,333 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 23:37:45,333 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:37:45,333 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 23:37:45,358 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states. [2019-11-19 23:37:45,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2019-11-19 23:37:45,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:37:45,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:37:45,390 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-19 23:37:45,390 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] [2019-11-19 23:37:45,391 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 23:37:45,391 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states. [2019-11-19 23:37:45,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2019-11-19 23:37:45,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:37:45,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:37:45,398 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-19 23:37:45,398 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] [2019-11-19 23:37:45,404 INFO L794 eck$LassoCheckResult]: Stem: 34#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]; 12#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; 57#L207true assume !(0 == ~r1~0);init_~tmp~0 := 0; 75#L207-1true init_#res := init_~tmp~0; 38#L300true 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; 26#L366-2true [2019-11-19 23:37:45,405 INFO L796 eck$LassoCheckResult]: Loop: 26#L366-2true assume !!(main_~i2~0 < 8);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 33#L106true assume !(0 != ~mode1~0 % 256); 20#L120true assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite0 := ~send1~0; 15#L120-2true ~p1_new~0 := (if node1_#t~ite0 % 256 <= 127 then node1_#t~ite0 % 256 else node1_#t~ite0 % 256 - 256);havoc node1_#t~ite0;~mode1~0 := 1; 10#L106-2true havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 44#L132true assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 8#L135true assume !(node2_~m2~0 != ~nomsg~0); 7#L135-1true ~mode2~0 := 0; 39#L132-2true havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 9#L157true assume !(0 != ~mode3~0 % 256); 69#L170true assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite2 := ~send3~0; 49#L170-2true ~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; 6#L157-2true havoc node4_#t~ite3, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 16#L182true assume !(0 != ~mode4~0 % 256); 54#L195true assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite3 := ~send4~0; 53#L195-2true ~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; 68#L182-2true ~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; 32#L308true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1 := 0; 35#L308-1true check_#res := check_~tmp~1; 70#L328true 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; 50#L393true assume !(0 == assert_~arg % 256); 23#L388true main_#t~post23 := main_~i2~0;main_~i2~0 := 1 + main_#t~post23;havoc main_#t~post23; 26#L366-2true [2019-11-19 23:37:45,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:37:45,409 INFO L82 PathProgramCache]: Analyzing trace with hash 28826826, now seen corresponding path program 1 times [2019-11-19 23:37:45,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:37:45,415 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941936807] [2019-11-19 23:37:45,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:37:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:37:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:37:45,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941936807] [2019-11-19 23:37:45,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:37:45,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:37:45,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498529902] [2019-11-19 23:37:45,589 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 23:37:45,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:37:45,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2061233783, now seen corresponding path program 1 times [2019-11-19 23:37:45,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:37:45,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432463001] [2019-11-19 23:37:45,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:37:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:37:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:37:45,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432463001] [2019-11-19 23:37:45,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:37:45,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 23:37:45,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431050553] [2019-11-19 23:37:45,737 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-19 23:37:45,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:37:45,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:37:45,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:37:45,754 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2019-11-19 23:37:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:37:45,847 INFO L93 Difference]: Finished difference Result 76 states and 123 transitions. [2019-11-19 23:37:45,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 23:37:45,849 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 123 transitions. [2019-11-19 23:37:45,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2019-11-19 23:37:45,857 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 69 states and 94 transitions. [2019-11-19 23:37:45,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2019-11-19 23:37:45,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2019-11-19 23:37:45,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 94 transitions. [2019-11-19 23:37:45,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:37:45,860 INFO L688 BuchiCegarLoop]: Abstraction has 69 states and 94 transitions. [2019-11-19 23:37:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states and 94 transitions. [2019-11-19 23:37:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2019-11-19 23:37:45,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-19 23:37:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2019-11-19 23:37:45,884 INFO L711 BuchiCegarLoop]: Abstraction has 69 states and 94 transitions. [2019-11-19 23:37:45,884 INFO L591 BuchiCegarLoop]: Abstraction has 69 states and 94 transitions. [2019-11-19 23:37:45,884 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 23:37:45,884 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states and 94 transitions. [2019-11-19 23:37:45,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2019-11-19 23:37:45,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:37:45,886 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:37:45,892 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] [2019-11-19 23:37:45,893 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] [2019-11-19 23:37:45,894 INFO L794 eck$LassoCheckResult]: Stem: 213#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]; 186#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; 187#L207 assume 0 == ~r1~0; 168#L208 assume ~id1~0 >= 0; 169#L209 assume 0 == ~st1~0; 200#L210 assume ~send1~0 == ~id1~0; 221#L211 assume 0 == ~mode1~0 % 256; 183#L212 assume ~id2~0 >= 0; 184#L213 assume 0 == ~st2~0; 225#L214 assume ~send2~0 == ~id2~0; 192#L215 assume 0 == ~mode2~0 % 256; 193#L216 assume ~id3~0 >= 0; 215#L217 assume 0 == ~st3~0; 229#L218 assume ~send3~0 == ~id3~0; 172#L219 assume 0 == ~mode3~0 % 256; 173#L220 assume ~id4~0 >= 0; 201#L221 assume 0 == ~st4~0; 222#L222 assume ~send4~0 == ~id4~0; 209#L223 assume 0 == ~mode4~0 % 256; 210#L224 assume ~id1~0 != ~id2~0; 226#L225 assume ~id1~0 != ~id3~0; 194#L226 assume ~id1~0 != ~id4~0; 195#L227 assume ~id2~0 != ~id3~0; 216#L228 assume ~id2~0 != ~id4~0; 230#L229 assume ~id3~0 != ~id4~0;init_~tmp~0 := 1; 233#L207-1 init_#res := init_~tmp~0; 214#L300 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; 199#L366-2 [2019-11-19 23:37:45,902 INFO L796 eck$LassoCheckResult]: Loop: 199#L366-2 assume !!(main_~i2~0 < 8);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 202#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; 211#L110 assume !(node1_~m1~0 != ~nomsg~0); 204#L110-1 ~mode1~0 := 0; 181#L106-2 havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 182#L132 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 176#L135 assume !(node2_~m2~0 != ~nomsg~0); 174#L135-1 ~mode2~0 := 0; 175#L132-2 havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 178#L157 assume !(0 != ~mode3~0 % 256); 179#L170 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite2 := ~send3~0; 223#L170-2 ~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; 170#L157-2 havoc node4_#t~ite3, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 171#L182 assume !(0 != ~mode4~0 % 256); 189#L195 assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite3 := ~send4~0; 227#L195-2 ~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; 228#L182-2 ~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; 206#L308 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1 := 0; 207#L308-1 check_#res := check_~tmp~1; 212#L328 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; 224#L393 assume !(0 == assert_~arg % 256); 198#L388 main_#t~post23 := main_~i2~0;main_~i2~0 := 1 + main_#t~post23;havoc main_#t~post23; 199#L366-2 [2019-11-19 23:37:45,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:37:45,902 INFO L82 PathProgramCache]: Analyzing trace with hash 370924325, now seen corresponding path program 1 times [2019-11-19 23:37:45,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:37:45,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30694132] [2019-11-19 23:37:45,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:37:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:37:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:37:45,992 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:37:45,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:37:45,992 INFO L82 PathProgramCache]: Analyzing trace with hash -293702655, now seen corresponding path program 1 times [2019-11-19 23:37:45,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:37:45,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796110561] [2019-11-19 23:37:45,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:37:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:37:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:37:46,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796110561] [2019-11-19 23:37:46,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:37:46,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 23:37:46,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367356446] [2019-11-19 23:37:46,113 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-19 23:37:46,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:37:46,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:37:46,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:37:46,114 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. cyclomatic complexity: 26 Second operand 5 states. [2019-11-19 23:37:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:37:46,167 INFO L93 Difference]: Finished difference Result 72 states and 96 transitions. [2019-11-19 23:37:46,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 23:37:46,168 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 96 transitions. [2019-11-19 23:37:46,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2019-11-19 23:37:46,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 69 states and 91 transitions. [2019-11-19 23:37:46,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2019-11-19 23:37:46,173 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2019-11-19 23:37:46,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 91 transitions. [2019-11-19 23:37:46,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:37:46,173 INFO L688 BuchiCegarLoop]: Abstraction has 69 states and 91 transitions. [2019-11-19 23:37:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states and 91 transitions. [2019-11-19 23:37:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2019-11-19 23:37:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-19 23:37:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2019-11-19 23:37:46,179 INFO L711 BuchiCegarLoop]: Abstraction has 69 states and 91 transitions. [2019-11-19 23:37:46,179 INFO L591 BuchiCegarLoop]: Abstraction has 69 states and 91 transitions. [2019-11-19 23:37:46,179 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 23:37:46,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states and 91 transitions. [2019-11-19 23:37:46,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2019-11-19 23:37:46,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:37:46,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:37:46,182 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] [2019-11-19 23:37:46,182 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] [2019-11-19 23:37:46,182 INFO L794 eck$LassoCheckResult]: Stem: 366#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]; 339#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; 340#L207 assume 0 == ~r1~0; 321#L208 assume ~id1~0 >= 0; 322#L209 assume 0 == ~st1~0; 353#L210 assume ~send1~0 == ~id1~0; 374#L211 assume 0 == ~mode1~0 % 256; 336#L212 assume ~id2~0 >= 0; 337#L213 assume 0 == ~st2~0; 378#L214 assume ~send2~0 == ~id2~0; 345#L215 assume 0 == ~mode2~0 % 256; 346#L216 assume ~id3~0 >= 0; 368#L217 assume 0 == ~st3~0; 382#L218 assume ~send3~0 == ~id3~0; 323#L219 assume 0 == ~mode3~0 % 256; 324#L220 assume ~id4~0 >= 0; 354#L221 assume 0 == ~st4~0; 375#L222 assume ~send4~0 == ~id4~0; 359#L223 assume 0 == ~mode4~0 % 256; 360#L224 assume ~id1~0 != ~id2~0; 379#L225 assume ~id1~0 != ~id3~0; 347#L226 assume ~id1~0 != ~id4~0; 348#L227 assume ~id2~0 != ~id3~0; 369#L228 assume ~id2~0 != ~id4~0; 383#L229 assume ~id3~0 != ~id4~0;init_~tmp~0 := 1; 386#L207-1 init_#res := init_~tmp~0; 367#L300 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; 352#L366-2 [2019-11-19 23:37:46,183 INFO L796 eck$LassoCheckResult]: Loop: 352#L366-2 assume !!(main_~i2~0 < 8);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 355#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; 363#L110 assume !(node1_~m1~0 != ~nomsg~0); 357#L110-1 ~mode1~0 := 0; 334#L106-2 havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 335#L132 assume !(0 != ~mode2~0 % 256); 371#L145 assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite1 := ~send2~0; 384#L145-2 ~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; 328#L132-2 havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 331#L157 assume !(0 != ~mode3~0 % 256); 332#L170 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite2 := ~send3~0; 376#L170-2 ~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; 325#L157-2 havoc node4_#t~ite3, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 326#L182 assume !(0 != ~mode4~0 % 256); 343#L195 assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite3 := ~send4~0; 380#L195-2 ~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; 381#L182-2 ~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; 361#L308 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 362#L309 assume ~r1~0 >= 4; 373#L313 assume ~r1~0 < 4;check_~tmp~1 := 1; 364#L308-1 check_#res := check_~tmp~1; 365#L328 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; 377#L393 assume !(0 == assert_~arg % 256); 351#L388 main_#t~post23 := main_~i2~0;main_~i2~0 := 1 + main_#t~post23;havoc main_#t~post23; 352#L366-2 [2019-11-19 23:37:46,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:37:46,183 INFO L82 PathProgramCache]: Analyzing trace with hash 370924325, now seen corresponding path program 2 times [2019-11-19 23:37:46,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:37:46,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544958315] [2019-11-19 23:37:46,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:37:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:37:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:37:46,228 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:37:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:37:46,228 INFO L82 PathProgramCache]: Analyzing trace with hash 999513895, now seen corresponding path program 1 times [2019-11-19 23:37:46,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:37:46,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094867318] [2019-11-19 23:37:46,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:37:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:37:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:37:46,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094867318] [2019-11-19 23:37:46,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:37:46,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:37:46,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512542948] [2019-11-19 23:37:46,260 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-19 23:37:46,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:37:46,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:37:46,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:37:46,261 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. cyclomatic complexity: 23 Second operand 3 states. [2019-11-19 23:37:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:37:46,288 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2019-11-19 23:37:46,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:37:46,289 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 144 transitions. [2019-11-19 23:37:46,291 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2019-11-19 23:37:46,293 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 105 states and 144 transitions. [2019-11-19 23:37:46,293 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 105 [2019-11-19 23:37:46,293 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2019-11-19 23:37:46,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 144 transitions. [2019-11-19 23:37:46,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:37:46,294 INFO L688 BuchiCegarLoop]: Abstraction has 105 states and 144 transitions. [2019-11-19 23:37:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 144 transitions. [2019-11-19 23:37:46,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2019-11-19 23:37:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-19 23:37:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 144 transitions. [2019-11-19 23:37:46,310 INFO L711 BuchiCegarLoop]: Abstraction has 105 states and 144 transitions. [2019-11-19 23:37:46,310 INFO L591 BuchiCegarLoop]: Abstraction has 105 states and 144 transitions. [2019-11-19 23:37:46,310 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 23:37:46,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 144 transitions. [2019-11-19 23:37:46,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2019-11-19 23:37:46,315 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:37:46,315 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:37:46,317 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] [2019-11-19 23:37:46,317 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] [2019-11-19 23:37:46,317 INFO L794 eck$LassoCheckResult]: Stem: 545#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]; 518#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; 519#L207 assume 0 == ~r1~0; 501#L208 assume ~id1~0 >= 0; 502#L209 assume 0 == ~st1~0; 534#L210 assume ~send1~0 == ~id1~0; 557#L211 assume 0 == ~mode1~0 % 256; 516#L212 assume ~id2~0 >= 0; 517#L213 assume 0 == ~st2~0; 561#L214 assume ~send2~0 == ~id2~0; 526#L215 assume 0 == ~mode2~0 % 256; 527#L216 assume ~id3~0 >= 0; 551#L217 assume 0 == ~st3~0; 565#L218 assume ~send3~0 == ~id3~0; 503#L219 assume 0 == ~mode3~0 % 256; 504#L220 assume ~id4~0 >= 0; 535#L221 assume 0 == ~st4~0; 558#L222 assume ~send4~0 == ~id4~0; 540#L223 assume 0 == ~mode4~0 % 256; 541#L224 assume ~id1~0 != ~id2~0; 562#L225 assume ~id1~0 != ~id3~0; 528#L226 assume ~id1~0 != ~id4~0; 529#L227 assume ~id2~0 != ~id3~0; 552#L228 assume ~id2~0 != ~id4~0; 566#L229 assume ~id3~0 != ~id4~0;init_~tmp~0 := 1; 570#L207-1 init_#res := init_~tmp~0; 548#L300 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; 549#L366-2 [2019-11-19 23:37:46,318 INFO L796 eck$LassoCheckResult]: Loop: 549#L366-2 assume !!(main_~i2~0 < 8);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 596#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; 544#L110 assume !(node1_~m1~0 != ~nomsg~0); 538#L110-1 ~mode1~0 := 0; 550#L106-2 havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 592#L132 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 593#L135 assume !(node2_~m2~0 != ~nomsg~0); 590#L135-1 ~mode2~0 := 0; 588#L132-2 havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 587#L157 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 585#L160 assume !(node3_~m3~0 != ~nomsg~0); 582#L160-1 ~mode3~0 := 0; 505#L157-2 havoc node4_#t~ite3, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 506#L182 assume !(0 != ~mode4~0 % 256); 524#L195 assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite3 := ~send4~0; 563#L195-2 ~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; 564#L182-2 ~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; 573#L308 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 572#L309 assume !(~r1~0 >= 4); 555#L312 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0; 556#L313 assume ~r1~0 < 4;check_~tmp~1 := 1; 600#L308-1 check_#res := check_~tmp~1; 599#L328 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; 598#L393 assume !(0 == assert_~arg % 256); 597#L388 main_#t~post23 := main_~i2~0;main_~i2~0 := 1 + main_#t~post23;havoc main_#t~post23; 549#L366-2 [2019-11-19 23:37:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:37:46,319 INFO L82 PathProgramCache]: Analyzing trace with hash 370924325, now seen corresponding path program 3 times [2019-11-19 23:37:46,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:37:46,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685408891] [2019-11-19 23:37:46,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:37:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:37:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:37:46,371 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:37:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:37:46,376 INFO L82 PathProgramCache]: Analyzing trace with hash -228752226, now seen corresponding path program 1 times [2019-11-19 23:37:46,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:37:46,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100294098] [2019-11-19 23:37:46,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:37:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:37:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:37:46,434 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:37:46,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:37:46,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1924285958, now seen corresponding path program 1 times [2019-11-19 23:37:46,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:37:46,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777522364] [2019-11-19 23:37:46,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:37:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:37:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:37:46,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777522364] [2019-11-19 23:37:46,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:37:46,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:37:46,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212186548] [2019-11-19 23:37:46,913 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 123 [2019-11-19 23:37:48,256 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 118 DAG size of output: 111 [2019-11-19 23:37:48,280 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:37:48,281 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:37:48,281 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:37:48,281 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:37:48,281 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:37:48,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:37:48,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:37:48,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:37:48,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4.ufo.BOUNDED-8.pals.c_Iteration4_Loop [2019-11-19 23:37:48,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:37:48,282 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:37:48,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:48,841 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-11-19 23:37:49,919 WARN L191 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2019-11-19 23:37:50,072 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:37:50,073 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/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 [2019-11-19 23:37:50,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:37:50,085 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/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 [2019-11-19 23:37:50,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:37:50,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:37:50,173 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:37:50,175 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:37:50,175 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:37:50,175 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:37:50,175 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:37:50,175 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:37:50,175 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:37:50,175 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:37:50,175 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:37:50,176 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4.ufo.BOUNDED-8.pals.c_Iteration4_Loop [2019-11-19 23:37:50,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:37:50,176 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:37:50,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:37:50,604 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-11-19 23:37:51,655 WARN L191 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2019-11-19 23:37:51,775 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:37:51,779 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:37:51,789 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 [2019-11-19 23:37:51,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:37:51,792 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:37:51,793 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:37:51,793 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:37:51,793 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:37:51,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:37:51,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:37:51,799 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:37:51,813 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 [2019-11-19 23:37:51,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:37:51,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:37:51,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:37:51,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:37:51,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:37:51,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:37:51,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:37:51,819 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:37:51,824 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 [2019-11-19 23:37:51,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:37:51,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:37:51,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:37:51,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:37:51,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:37:51,827 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:37:51,827 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:37:51,831 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:37:51,845 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:37:51,845 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b779cb2-aeb6-40ed-bf07-2b324576e103/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:37:51,852 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:37:51,852 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:37:51,853 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:37:51,853 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 15 Supporting invariants [] [2019-11-19 23:37:51,857 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:37:51,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:37:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:37:51,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:37:51,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:37:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:37:52,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:37:52,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:37:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:37:52,041 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 [2019-11-19 23:37:52,042 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 105 states and 144 transitions. cyclomatic complexity: 40 Second operand 3 states. [2019-11-19 23:37:52,085 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. [2019-11-19 23:37:52,088 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 [2019-11-19 23:37:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:37:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2019-11-19 23:37:52,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 27 letters. Loop has 25 letters. [2019-11-19 23:37:52,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:37:52,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 52 letters. Loop has 25 letters. [2019-11-19 23:37:52,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:37:52,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 27 letters. Loop has 50 letters. [2019-11-19 23:37:52,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:37:52,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 261 transitions. [2019-11-19 23:37:52,098 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:37:52,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 0 states and 0 transitions. [2019-11-19 23:37:52,098 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 23:37:52,098 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 23:37:52,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 23:37:52,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:37:52,099 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:37:52,099 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:37:52,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:37:52,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:37:52,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:37:52,100 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2019-11-19 23:37:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:37:52,100 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-19 23:37:52,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 23:37:52,100 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-19 23:37:52,101 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:37:52,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 23:37:52,101 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 23:37:52,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 23:37:52,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 23:37:52,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:37:52,102 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:37:52,102 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:37:52,102 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:37:52,102 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-19 23:37:52,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 23:37:52,102 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:37:52,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 23:37:52,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 11:37:52 BoogieIcfgContainer [2019-11-19 23:37:52,108 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 23:37:52,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:37:52,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:37:52,112 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:37:52,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:37:45" (3/4) ... [2019-11-19 23:37:52,115 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 23:37:52,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:37:52,117 INFO L168 Benchmark]: Toolchain (without parser) took 7888.73 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 225.4 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -200.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-11-19 23:37:52,117 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:37:52,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:37:52,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:37:52,119 INFO L168 Benchmark]: Boogie Preprocessor took 29.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:37:52,119 INFO L168 Benchmark]: RCFGBuilder took 592.21 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:37:52,120 INFO L168 Benchmark]: BuchiAutomizer took 6834.76 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 94.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -64.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. [2019-11-19 23:37:52,120 INFO L168 Benchmark]: Witness Printer took 6.48 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:37:52,123 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 367.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 592.21 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6834.76 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 94.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -64.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. * Witness Printer took 6.48 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. 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 6.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 6.1s. Construction of modules took 0.0s. 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, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital562 mio100 ax108 hnf101 lsp15 ukn75 mio100 lsp100 div141 bol100 ite100 ukn100 eq184 hnf74 smp100 dnf691 smp48 tf100 neg99 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...