./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.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_cc0dafb2-1305-420f-9fc2-2096a4f5f848/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/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 21f67d0148e6a362a7411b86d83b7f3dc8bc3a6e ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 01:05:52,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:05:52,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:05:52,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:05:52,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:05:52,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:05:52,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:05:52,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:05:52,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:05:52,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:05:52,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:05:52,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:05:52,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:05:52,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:05:52,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:05:52,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:05:52,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:05:52,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:05:52,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:05:52,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:05:52,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:05:52,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:05:52,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:05:52,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:05:52,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:05:52,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:05:52,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:05:52,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:05:52,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:05:52,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:05:52,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:05:52,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:05:52,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:05:52,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:05:52,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:05:52,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:05:52,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:05:52,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:05:52,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:05:52,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:05:52,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:05:52,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 01:05:52,723 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:05:52,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:05:52,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:05:52,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:05:52,724 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:05:52,725 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 01:05:52,725 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 01:05:52,725 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 01:05:52,725 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 01:05:52,725 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 01:05:52,725 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 01:05:52,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:05:52,726 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:05:52,726 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 01:05:52,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:05:52,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:05:52,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:05:52,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 01:05:52,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 01:05:52,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 01:05:52,727 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:05:52,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 01:05:52,727 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 01:05:52,728 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:05:52,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 01:05:52,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:05:52,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:05:52,728 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 01:05:52,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:05:52,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 01:05:52,729 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 01:05:52,730 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 01:05:52,730 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_cc0dafb2-1305-420f-9fc2-2096a4f5f848/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 -> 21f67d0148e6a362a7411b86d83b7f3dc8bc3a6e [2019-11-20 01:05:52,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:05:52,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:05:52,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:05:52,885 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:05:52,885 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:05:52,885 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/bin/uautomizer/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2019-11-20 01:05:52,937 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/bin/uautomizer/data/fff818f12/2b62dfe52833493d96fc410572a82fb1/FLAG8a458b1e0 [2019-11-20 01:05:53,410 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:05:53,410 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2019-11-20 01:05:53,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/bin/uautomizer/data/fff818f12/2b62dfe52833493d96fc410572a82fb1/FLAG8a458b1e0 [2019-11-20 01:05:53,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/bin/uautomizer/data/fff818f12/2b62dfe52833493d96fc410572a82fb1 [2019-11-20 01:05:53,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:05:53,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 01:05:53,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:05:53,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:05:53,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:05:53,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:05:53" (1/1) ... [2019-11-20 01:05:53,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70041b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:53, skipping insertion in model container [2019-11-20 01:05:53,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:05:53" (1/1) ... [2019-11-20 01:05:53,921 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:05:53,945 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:05:54,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:05:54,194 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:05:54,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:05:54,242 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:05:54,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54 WrapperNode [2019-11-20 01:05:54,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:05:54,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 01:05:54,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 01:05:54,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 01:05:54,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (1/1) ... [2019-11-20 01:05:54,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (1/1) ... [2019-11-20 01:05:54,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 01:05:54,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:05:54,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:05:54,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:05:54,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (1/1) ... [2019-11-20 01:05:54,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (1/1) ... [2019-11-20 01:05:54,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (1/1) ... [2019-11-20 01:05:54,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (1/1) ... [2019-11-20 01:05:54,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (1/1) ... [2019-11-20 01:05:54,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (1/1) ... [2019-11-20 01:05:54,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (1/1) ... [2019-11-20 01:05:54,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:05:54,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:05:54,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:05:54,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:05:54,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/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 [2019-11-20 01:05:54,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:05:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:05:54,844 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:05:54,845 INFO L285 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-20 01:05:54,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:05:54 BoogieIcfgContainer [2019-11-20 01:05:54,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:05:54,846 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 01:05:54,847 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 01:05:54,850 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 01:05:54,851 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:05:54,851 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 01:05:53" (1/3) ... [2019-11-20 01:05:54,852 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@443f14a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 01:05:54, skipping insertion in model container [2019-11-20 01:05:54,852 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:05:54,852 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:05:54" (2/3) ... [2019-11-20 01:05:54,853 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@443f14a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 01:05:54, skipping insertion in model container [2019-11-20 01:05:54,853 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:05:54,853 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:05:54" (3/3) ... [2019-11-20 01:05:54,855 INFO L371 chiAutomizerObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2019-11-20 01:05:54,895 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 01:05:54,896 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 01:05:54,896 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 01:05:54,896 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:05:54,896 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:05:54,896 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 01:05:54,897 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:05:54,897 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 01:05:54,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59 states. [2019-11-20 01:05:54,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2019-11-20 01:05:54,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:05:54,930 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:05:54,939 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-20 01:05:54,939 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:05:54,939 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 01:05:54,939 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59 states. [2019-11-20 01:05:54,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2019-11-20 01:05:54,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:05:54,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:05:54,945 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-20 01:05:54,945 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:05:54,952 INFO L794 eck$LassoCheckResult]: Stem: 22#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;~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]; 7#L-1true havoc main_#res;havoc main_#t~nondet3, 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~ret16, main_#t~ret17, main_#t~post18, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet3;havoc main_#t~nondet3;~id1~0 := main_#t~nondet4;havoc main_#t~nondet4;~st1~0 := main_#t~nondet5;havoc main_#t~nondet5;~send1~0 := main_#t~nondet6;havoc main_#t~nondet6;~mode1~0 := main_#t~nondet7;havoc main_#t~nondet7;~id2~0 := main_#t~nondet8;havoc main_#t~nondet8;~st2~0 := main_#t~nondet9;havoc main_#t~nondet9;~send2~0 := main_#t~nondet10;havoc main_#t~nondet10;~mode2~0 := main_#t~nondet11;havoc main_#t~nondet11;~id3~0 := main_#t~nondet12;havoc main_#t~nondet12;~st3~0 := main_#t~nondet13;havoc main_#t~nondet13;~send3~0 := main_#t~nondet14;havoc main_#t~nondet14;~mode3~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 32#L177true assume !(0 == ~r1~0);init_~tmp~0 := 0; 30#L177-1true init_#res := init_~tmp~0; 20#L242true main_#t~ret16 := init_#res;main_~i2~0 := main_#t~ret16;havoc main_#t~ret16;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;main_~i2~0 := 0; 58#L302-2true [2019-11-20 01:05:54,953 INFO L796 eck$LassoCheckResult]: Loop: 58#L302-2true assume !!(main_~i2~0 < 6);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 26#L99true 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 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 19#L103true assume !(node1_~m1~0 != ~nomsg~0); 18#L103-1true ~mode1~0 := 0; 23#L99-2true havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 8#L127true assume !(0 != ~mode2~0 % 256); 42#L140true assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite1 := ~send2~0; 40#L140-2true ~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; 49#L127-2true havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 60#L152true assume !(0 != ~mode3~0 % 256); 16#L165true assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite2 := ~send3~0; 27#L165-2true ~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; 56#L152-2true ~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;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 29#L250true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 44#L250-1true check_#res := check_~tmp~1; 15#L270true main_#t~ret17 := check_#res;main_~c1~0 := main_#t~ret17;havoc main_#t~ret17;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 25#L326true assume !(0 == assert_~arg % 256); 4#L321true main_#t~post18 := main_~i2~0;main_~i2~0 := 1 + main_#t~post18;havoc main_#t~post18; 58#L302-2true [2019-11-20 01:05:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:05:54,958 INFO L82 PathProgramCache]: Analyzing trace with hash 28785120, now seen corresponding path program 1 times [2019-11-20 01:05:54,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:05:54,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465483960] [2019-11-20 01:05:54,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:05:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:05:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:05:55,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465483960] [2019-11-20 01:05:55,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:05:55,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 01:05:55,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989510661] [2019-11-20 01:05:55,127 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 01:05:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:05:55,128 INFO L82 PathProgramCache]: Analyzing trace with hash 982225852, now seen corresponding path program 1 times [2019-11-20 01:05:55,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:05:55,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735029180] [2019-11-20 01:05:55,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:05:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:05:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:05:55,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735029180] [2019-11-20 01:05:55,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:05:55,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 01:05:55,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599550891] [2019-11-20 01:05:55,305 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:05:55,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:05:55,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 01:05:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:05:55,323 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2019-11-20 01:05:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:05:55,422 INFO L93 Difference]: Finished difference Result 61 states and 96 transitions. [2019-11-20 01:05:55,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 01:05:55,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 96 transitions. [2019-11-20 01:05:55,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2019-11-20 01:05:55,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 54 states and 74 transitions. [2019-11-20 01:05:55,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-11-20 01:05:55,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-11-20 01:05:55,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 74 transitions. [2019-11-20 01:05:55,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:05:55,436 INFO L688 BuchiCegarLoop]: Abstraction has 54 states and 74 transitions. [2019-11-20 01:05:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 74 transitions. [2019-11-20 01:05:55,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-20 01:05:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-20 01:05:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2019-11-20 01:05:55,465 INFO L711 BuchiCegarLoop]: Abstraction has 54 states and 74 transitions. [2019-11-20 01:05:55,465 INFO L591 BuchiCegarLoop]: Abstraction has 54 states and 74 transitions. [2019-11-20 01:05:55,465 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 01:05:55,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 74 transitions. [2019-11-20 01:05:55,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2019-11-20 01:05:55,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:05:55,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:05:55,469 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] [2019-11-20 01:05:55,469 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:05:55,469 INFO L794 eck$LassoCheckResult]: Stem: 167#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;~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]; 146#L-1 havoc main_#res;havoc main_#t~nondet3, 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~ret16, main_#t~ret17, main_#t~post18, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet3;havoc main_#t~nondet3;~id1~0 := main_#t~nondet4;havoc main_#t~nondet4;~st1~0 := main_#t~nondet5;havoc main_#t~nondet5;~send1~0 := main_#t~nondet6;havoc main_#t~nondet6;~mode1~0 := main_#t~nondet7;havoc main_#t~nondet7;~id2~0 := main_#t~nondet8;havoc main_#t~nondet8;~st2~0 := main_#t~nondet9;havoc main_#t~nondet9;~send2~0 := main_#t~nondet10;havoc main_#t~nondet10;~mode2~0 := main_#t~nondet11;havoc main_#t~nondet11;~id3~0 := main_#t~nondet12;havoc main_#t~nondet12;~st3~0 := main_#t~nondet13;havoc main_#t~nondet13;~send3~0 := main_#t~nondet14;havoc main_#t~nondet14;~mode3~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 147#L177 assume 0 == ~r1~0; 178#L178 assume ~id1~0 >= 0; 139#L179 assume 0 == ~st1~0; 140#L180 assume ~send1~0 == ~id1~0; 166#L181 assume 0 == ~mode1~0 % 256; 151#L182 assume ~id2~0 >= 0; 152#L183 assume 0 == ~st2~0; 168#L184 assume ~send2~0 == ~id2~0; 186#L185 assume 0 == ~mode2~0 % 256; 135#L186 assume ~id3~0 >= 0; 136#L187 assume 0 == ~st3~0; 160#L188 assume ~send3~0 == ~id3~0; 180#L189 assume 0 == ~mode3~0 % 256; 141#L190 assume ~id1~0 != ~id2~0; 142#L191 assume ~id1~0 != ~id3~0; 183#L192 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 175#L177-1 init_#res := init_~tmp~0; 165#L242 main_#t~ret16 := init_#res;main_~i2~0 := main_#t~ret16;havoc main_#t~ret16;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;main_~i2~0 := 0; 138#L302-2 [2019-11-20 01:05:55,470 INFO L796 eck$LassoCheckResult]: Loop: 138#L302-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 169#L99 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 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 163#L103 assume !(node1_~m1~0 != ~nomsg~0); 161#L103-1 ~mode1~0 := 0; 162#L99-2 havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 148#L127 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 149#L130 assume !(node2_~m2~0 != ~nomsg~0); 154#L130-1 ~mode2~0 := 0; 185#L127-2 havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 188#L152 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 176#L155 assume !(node3_~m3~0 != ~nomsg~0); 172#L155-1 ~mode3~0 := 0; 171#L152-2 ~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;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 173#L250 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 144#L250-1 check_#res := check_~tmp~1; 156#L270 main_#t~ret17 := check_#res;main_~c1~0 := main_#t~ret17;havoc main_#t~ret17;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 157#L326 assume !(0 == assert_~arg % 256); 137#L321 main_#t~post18 := main_~i2~0;main_~i2~0 := 1 + main_#t~post18;havoc main_#t~post18; 138#L302-2 [2019-11-20 01:05:55,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:05:55,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1664101251, now seen corresponding path program 1 times [2019-11-20 01:05:55,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:05:55,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887478940] [2019-11-20 01:05:55,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:05:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:05:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:05:55,561 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:05:55,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:05:55,561 INFO L82 PathProgramCache]: Analyzing trace with hash -573552688, now seen corresponding path program 1 times [2019-11-20 01:05:55,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:05:55,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995901336] [2019-11-20 01:05:55,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:05:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:05:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:05:55,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995901336] [2019-11-20 01:05:55,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:05:55,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 01:05:55,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523013280] [2019-11-20 01:05:55,673 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:05:55,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:05:55,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:05:55,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:05:55,674 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. cyclomatic complexity: 21 Second operand 5 states. [2019-11-20 01:05:55,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:05:55,743 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2019-11-20 01:05:55,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:05:55,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 76 transitions. [2019-11-20 01:05:55,747 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2019-11-20 01:05:55,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 54 states and 71 transitions. [2019-11-20 01:05:55,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2019-11-20 01:05:55,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2019-11-20 01:05:55,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 71 transitions. [2019-11-20 01:05:55,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:05:55,750 INFO L688 BuchiCegarLoop]: Abstraction has 54 states and 71 transitions. [2019-11-20 01:05:55,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 71 transitions. [2019-11-20 01:05:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-20 01:05:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-20 01:05:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2019-11-20 01:05:55,755 INFO L711 BuchiCegarLoop]: Abstraction has 54 states and 71 transitions. [2019-11-20 01:05:55,755 INFO L591 BuchiCegarLoop]: Abstraction has 54 states and 71 transitions. [2019-11-20 01:05:55,755 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 01:05:55,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 71 transitions. [2019-11-20 01:05:55,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2019-11-20 01:05:55,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:05:55,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:05:55,767 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] [2019-11-20 01:05:55,767 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] [2019-11-20 01:05:55,767 INFO L794 eck$LassoCheckResult]: Stem: 290#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;~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]; 266#L-1 havoc main_#res;havoc main_#t~nondet3, 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~ret16, main_#t~ret17, main_#t~post18, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet3;havoc main_#t~nondet3;~id1~0 := main_#t~nondet4;havoc main_#t~nondet4;~st1~0 := main_#t~nondet5;havoc main_#t~nondet5;~send1~0 := main_#t~nondet6;havoc main_#t~nondet6;~mode1~0 := main_#t~nondet7;havoc main_#t~nondet7;~id2~0 := main_#t~nondet8;havoc main_#t~nondet8;~st2~0 := main_#t~nondet9;havoc main_#t~nondet9;~send2~0 := main_#t~nondet10;havoc main_#t~nondet10;~mode2~0 := main_#t~nondet11;havoc main_#t~nondet11;~id3~0 := main_#t~nondet12;havoc main_#t~nondet12;~st3~0 := main_#t~nondet13;havoc main_#t~nondet13;~send3~0 := main_#t~nondet14;havoc main_#t~nondet14;~mode3~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 267#L177 assume 0 == ~r1~0; 301#L178 assume ~id1~0 >= 0; 262#L179 assume 0 == ~st1~0; 263#L180 assume ~send1~0 == ~id1~0; 289#L181 assume 0 == ~mode1~0 % 256; 274#L182 assume ~id2~0 >= 0; 275#L183 assume 0 == ~st2~0; 291#L184 assume ~send2~0 == ~id2~0; 309#L185 assume 0 == ~mode2~0 % 256; 258#L186 assume ~id3~0 >= 0; 259#L187 assume 0 == ~st3~0; 283#L188 assume ~send3~0 == ~id3~0; 303#L189 assume 0 == ~mode3~0 % 256; 264#L190 assume ~id1~0 != ~id2~0; 265#L191 assume ~id1~0 != ~id3~0; 306#L192 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 298#L177-1 init_#res := init_~tmp~0; 288#L242 main_#t~ret16 := init_#res;main_~i2~0 := main_#t~ret16;havoc main_#t~ret16;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;main_~i2~0 := 0; 261#L302-2 [2019-11-20 01:05:55,767 INFO L796 eck$LassoCheckResult]: Loop: 261#L302-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 292#L99 assume !(0 != ~mode1~0 % 256); 293#L115 assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite0 := ~send1~0; 302#L115-2 ~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; 285#L99-2 havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 268#L127 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 269#L130 assume !(node2_~m2~0 != ~nomsg~0); 277#L130-1 ~mode2~0 := 0; 308#L127-2 havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 311#L152 assume !(0 != ~mode3~0 % 256); 281#L165 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite2 := ~send3~0; 282#L165-2 ~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; 294#L152-2 ~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;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 296#L250 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 297#L251 assume ~r1~0 >= 3; 271#L255 assume ~r1~0 < 3;check_~tmp~1 := 1; 272#L250-1 check_#res := check_~tmp~1; 279#L270 main_#t~ret17 := check_#res;main_~c1~0 := main_#t~ret17;havoc main_#t~ret17;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 280#L326 assume !(0 == assert_~arg % 256); 260#L321 main_#t~post18 := main_~i2~0;main_~i2~0 := 1 + main_#t~post18;havoc main_#t~post18; 261#L302-2 [2019-11-20 01:05:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:05:55,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1664101251, now seen corresponding path program 2 times [2019-11-20 01:05:55,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:05:55,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447594991] [2019-11-20 01:05:55,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:05:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:05:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:05:55,828 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:05:55,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:05:55,828 INFO L82 PathProgramCache]: Analyzing trace with hash 604465100, now seen corresponding path program 1 times [2019-11-20 01:05:55,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:05:55,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461234181] [2019-11-20 01:05:55,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:05:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:05:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:05:55,871 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461234181] [2019-11-20 01:05:55,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:05:55,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 01:05:55,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858058943] [2019-11-20 01:05:55,872 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:05:55,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:05:55,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 01:05:55,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 01:05:55,873 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. cyclomatic complexity: 18 Second operand 3 states. [2019-11-20 01:05:55,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:05:55,898 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2019-11-20 01:05:55,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 01:05:55,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 111 transitions. [2019-11-20 01:05:55,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 62 [2019-11-20 01:05:55,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 82 states and 111 transitions. [2019-11-20 01:05:55,903 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2019-11-20 01:05:55,903 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2019-11-20 01:05:55,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 111 transitions. [2019-11-20 01:05:55,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:05:55,904 INFO L688 BuchiCegarLoop]: Abstraction has 82 states and 111 transitions. [2019-11-20 01:05:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 111 transitions. [2019-11-20 01:05:55,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-11-20 01:05:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-20 01:05:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 111 transitions. [2019-11-20 01:05:55,914 INFO L711 BuchiCegarLoop]: Abstraction has 82 states and 111 transitions. [2019-11-20 01:05:55,914 INFO L591 BuchiCegarLoop]: Abstraction has 82 states and 111 transitions. [2019-11-20 01:05:55,914 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 01:05:55,914 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 111 transitions. [2019-11-20 01:05:55,916 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 62 [2019-11-20 01:05:55,916 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:05:55,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:05:55,917 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] [2019-11-20 01:05:55,917 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] [2019-11-20 01:05:55,917 INFO L794 eck$LassoCheckResult]: Stem: 432#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;~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]; 408#L-1 havoc main_#res;havoc main_#t~nondet3, 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~ret16, main_#t~ret17, main_#t~post18, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet3;havoc main_#t~nondet3;~id1~0 := main_#t~nondet4;havoc main_#t~nondet4;~st1~0 := main_#t~nondet5;havoc main_#t~nondet5;~send1~0 := main_#t~nondet6;havoc main_#t~nondet6;~mode1~0 := main_#t~nondet7;havoc main_#t~nondet7;~id2~0 := main_#t~nondet8;havoc main_#t~nondet8;~st2~0 := main_#t~nondet9;havoc main_#t~nondet9;~send2~0 := main_#t~nondet10;havoc main_#t~nondet10;~mode2~0 := main_#t~nondet11;havoc main_#t~nondet11;~id3~0 := main_#t~nondet12;havoc main_#t~nondet12;~st3~0 := main_#t~nondet13;havoc main_#t~nondet13;~send3~0 := main_#t~nondet14;havoc main_#t~nondet14;~mode3~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 409#L177 assume 0 == ~r1~0; 443#L178 assume ~id1~0 >= 0; 404#L179 assume 0 == ~st1~0; 405#L180 assume ~send1~0 == ~id1~0; 431#L181 assume 0 == ~mode1~0 % 256; 415#L182 assume ~id2~0 >= 0; 416#L183 assume 0 == ~st2~0; 433#L184 assume ~send2~0 == ~id2~0; 452#L185 assume 0 == ~mode2~0 % 256; 400#L186 assume ~id3~0 >= 0; 401#L187 assume 0 == ~st3~0; 425#L188 assume ~send3~0 == ~id3~0; 445#L189 assume 0 == ~mode3~0 % 256; 406#L190 assume ~id1~0 != ~id2~0; 407#L191 assume ~id1~0 != ~id3~0; 449#L192 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 440#L177-1 init_#res := init_~tmp~0; 430#L242 main_#t~ret16 := init_#res;main_~i2~0 := main_#t~ret16;havoc main_#t~ret16;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;main_~i2~0 := 0; 403#L302-2 [2019-11-20 01:05:55,917 INFO L796 eck$LassoCheckResult]: Loop: 403#L302-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite0, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 435#L99 assume !(0 != ~mode1~0 % 256); 436#L115 assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite0 := ~send1~0; 444#L115-2 ~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; 427#L99-2 havoc node2_#t~ite1, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 410#L127 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 411#L130 assume !(node2_~m2~0 != ~nomsg~0); 418#L130-1 ~mode2~0 := 0; 451#L127-2 havoc node3_#t~ite2, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 456#L152 assume !(0 != ~mode3~0 % 256); 423#L165 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite2 := ~send3~0; 424#L165-2 ~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; 434#L152-2 ~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;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 438#L250 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 439#L251 assume !(~r1~0 >= 3); 447#L254 assume 0 == ~st1~0 + ~st2~0 + ~st3~0; 448#L255 assume ~r1~0 < 3;check_~tmp~1 := 1; 453#L250-1 check_#res := check_~tmp~1; 421#L270 main_#t~ret17 := check_#res;main_~c1~0 := main_#t~ret17;havoc main_#t~ret17;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 422#L326 assume !(0 == assert_~arg % 256); 402#L321 main_#t~post18 := main_~i2~0;main_~i2~0 := 1 + main_#t~post18;havoc main_#t~post18; 403#L302-2 [2019-11-20 01:05:55,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:05:55,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1664101251, now seen corresponding path program 3 times [2019-11-20 01:05:55,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:05:55,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950408173] [2019-11-20 01:05:55,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:05:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:05:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:05:55,952 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:05:55,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:05:55,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1089846558, now seen corresponding path program 1 times [2019-11-20 01:05:55,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:05:55,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831788205] [2019-11-20 01:05:55,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:05:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:05:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:05:55,978 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:05:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:05:55,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1894601702, now seen corresponding path program 1 times [2019-11-20 01:05:55,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:05:55,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675873186] [2019-11-20 01:05:55,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:05:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:05:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:05:56,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675873186] [2019-11-20 01:05:56,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:05:56,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 01:05:56,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497548082] [2019-11-20 01:05:56,408 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2019-11-20 01:05:57,743 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2019-11-20 01:05:57,754 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:05:57,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:05:57,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:05:57,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:05:57,755 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:05:57,755 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:05:57,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:05:57,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:05:57,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2019-11-20 01:05:57,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:05:57,756 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:05:57,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:57,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:58,007 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-11-20 01:05:58,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:58,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:58,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:58,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:58,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:58,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:58,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:58,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:05:58,378 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-11-20 01:05:58,408 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-20 01:06:01,850 WARN L191 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 143 DAG size of output: 95 [2019-11-20 01:06:01,897 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:06:01,898 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/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 [2019-11-20 01:06:01,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:06:01,905 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/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 [2019-11-20 01:06:01,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:06:01,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:06:02,033 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:06:02,035 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:06:02,035 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:06:02,036 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:06:02,036 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:06:02,036 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:06:02,036 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:06:02,036 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:06:02,036 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:06:02,036 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2019-11-20 01:06:02,036 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:06:02,036 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:06:02,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,257 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-11-20 01:06:02,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:06:02,556 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-11-20 01:06:02,562 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-20 01:06:05,807 WARN L191 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 143 DAG size of output: 95 [2019-11-20 01:06:05,821 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:06:05,825 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/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 [2019-11-20 01:06:05,829 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 [2019-11-20 01:06:05,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:06:05,830 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:06:05,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:06:05,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:06:05,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:06:05,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:06:05,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:06:05,841 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc0dafb2-1305-420f-9fc2-2096a4f5f848/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) [2019-11-20 01:06:05,866 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 [2019-11-20 01:06:05,868 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:06:05,868 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:06:05,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:06:05,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:06:05,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:06:05,869 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:06:05,869 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:06:05,872 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:06:05,880 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:06:05,880 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_cc0dafb2-1305-420f-9fc2-2096a4f5f848/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 [2019-11-20 01:06:05,890 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:06:05,890 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:06:05,890 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:06:05,891 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 11 Supporting invariants [] [2019-11-20 01:06:05,893 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 01:06:05,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:06:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:06:05,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:06:05,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:06:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:06:05,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:06:05,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:06:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:06:06,011 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 [2019-11-20 01:06:06,012 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 111 transitions. cyclomatic complexity: 30 Second operand 3 states. [2019-11-20 01:06:06,107 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states and 111 transitions. cyclomatic complexity: 30. Second operand 3 states. Result 143 states and 202 transitions. Complement of second has 4 states. [2019-11-20 01:06:06,110 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 [2019-11-20 01:06:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 01:06:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2019-11-20 01:06:06,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 71 transitions. Stem has 20 letters. Loop has 21 letters. [2019-11-20 01:06:06,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:06:06,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 71 transitions. Stem has 41 letters. Loop has 21 letters. [2019-11-20 01:06:06,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:06:06,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 71 transitions. Stem has 20 letters. Loop has 42 letters. [2019-11-20 01:06:06,120 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:06:06,120 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 143 states and 202 transitions. [2019-11-20 01:06:06,125 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 01:06:06,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 143 states to 0 states and 0 transitions. [2019-11-20 01:06:06,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 01:06:06,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 01:06:06,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 01:06:06,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:06:06,128 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:06:06,128 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:06:06,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:06:06,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 01:06:06,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 01:06:06,129 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2019-11-20 01:06:06,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:06:06,129 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-20 01:06:06,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 01:06:06,131 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-20 01:06:06,131 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 01:06:06,131 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 01:06:06,131 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 01:06:06,132 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 01:06:06,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 01:06:06,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:06:06,133 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:06:06,133 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:06:06,133 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:06:06,133 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 01:06:06,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 01:06:06,133 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 01:06:06,133 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 01:06:06,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 01:06:06 BoogieIcfgContainer [2019-11-20 01:06:06,141 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 01:06:06,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:06:06,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:06:06,141 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:06:06,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:05:54" (3/4) ... [2019-11-20 01:06:06,145 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 01:06:06,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:06:06,147 INFO L168 Benchmark]: Toolchain (without parser) took 12238.33 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 276.8 MB). Free memory was 951.2 MB in the beginning and 914.3 MB in the end (delta: 36.9 MB). Peak memory consumption was 313.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:06:06,148 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:06:06,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-11-20 01:06:06,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.43 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:06:06,156 INFO L168 Benchmark]: Boogie Preprocessor took 28.89 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. [2019-11-20 01:06:06,157 INFO L168 Benchmark]: RCFGBuilder took 531.79 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-20 01:06:06,158 INFO L168 Benchmark]: BuchiAutomizer took 11294.41 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Free memory was 1.1 GB in the beginning and 914.3 MB in the end (delta: 180.2 MB). Peak memory consumption was 317.5 MB. Max. memory is 11.5 GB. [2019-11-20 01:06:06,158 INFO L168 Benchmark]: Witness Printer took 4.18 ms. Allocated memory is still 1.3 GB. Free memory is still 914.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:06:06,167 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 333.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.43 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.89 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 531.79 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 11294.41 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Free memory was 1.1 GB in the beginning and 914.3 MB in the end (delta: 180.2 MB). Peak memory consumption was 317.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.18 ms. Allocated memory is still 1.3 GB. Free memory is still 914.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i2 + 11 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 11.2s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 10.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 82 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 338 SDtfs, 161 SDslu, 488 SDs, 0 SdLazy, 32 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital478 mio100 ax107 hnf101 lsp26 ukn64 mio100 lsp100 div170 bol100 ite100 ukn100 eq166 hnf68 smp100 dnf4932 smp23 tf100 neg98 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...