./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c -s /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/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 776db5900df2e210f2c2746932f1a55f834fc2cb ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:50:54,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:50:54,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:50:54,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:50:54,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:50:54,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:50:54,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:50:54,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:50:54,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:50:54,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:50:54,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:50:54,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:50:54,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:50:54,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:50:54,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:50:54,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:50:54,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:50:54,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:50:54,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:50:54,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:50:54,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:50:54,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:50:54,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:50:54,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:50:54,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:50:54,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:50:54,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:50:54,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:50:54,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:50:54,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:50:54,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:50:54,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:50:54,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:50:54,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:50:54,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:50:54,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:50:54,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:50:54,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:50:54,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:50:54,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:50:54,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:50:54,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 18:50:55,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:50:55,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:50:55,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:50:55,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:50:55,016 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:50:55,016 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:50:55,017 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:50:55,017 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:50:55,017 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:50:55,017 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:50:55,018 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:50:55,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:50:55,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:50:55,019 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:50:55,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:50:55,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:50:55,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:50:55,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:50:55,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:50:55,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:50:55,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:50:55,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:50:55,021 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:50:55,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:50:55,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:50:55,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:50:55,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:50:55,022 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:50:55,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:50:55,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:50:55,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:50:55,023 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:50:55,025 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:50:55,025 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 776db5900df2e210f2c2746932f1a55f834fc2cb [2020-11-29 18:50:55,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:50:55,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:50:55,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:50:55,370 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:50:55,370 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:50:55,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2020-11-29 18:50:55,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/data/e3f4f24d7/a91f08b5121e4525b534854a2153ae3a/FLAGc2bb69f7d [2020-11-29 18:50:55,990 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:50:55,990 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2020-11-29 18:50:56,009 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/data/e3f4f24d7/a91f08b5121e4525b534854a2153ae3a/FLAGc2bb69f7d [2020-11-29 18:50:56,323 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/data/e3f4f24d7/a91f08b5121e4525b534854a2153ae3a [2020-11-29 18:50:56,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:50:56,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:50:56,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:50:56,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:50:56,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:50:56,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:56,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b88b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56, skipping insertion in model container [2020-11-29 18:50:56,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:56,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:50:56,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:50:56,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:50:56,722 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:50:56,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:50:56,848 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:50:56,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56 WrapperNode [2020-11-29 18:50:56,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:50:56,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:50:56,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:50:56,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:50:56,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:56,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:56,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:50:56,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:50:56,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:50:56,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:50:56,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:56,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:56,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:56,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:56,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:56,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:56,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (1/1) ... [2020-11-29 18:50:57,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:50:57,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:50:57,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:50:57,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:50:57,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:50:57,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:50:57,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:50:57,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:50:57,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:50:58,066 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:50:58,066 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-29 18:50:58,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:50:58 BoogieIcfgContainer [2020-11-29 18:50:58,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:50:58,070 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:50:58,070 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:50:58,073 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:50:58,074 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:50:58,074 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:50:56" (1/3) ... [2020-11-29 18:50:58,076 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e074f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:50:58, skipping insertion in model container [2020-11-29 18:50:58,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:50:58,076 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:56" (2/3) ... [2020-11-29 18:50:58,077 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e074f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:50:58, skipping insertion in model container [2020-11-29 18:50:58,077 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:50:58,077 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:50:58" (3/3) ... [2020-11-29 18:50:58,079 INFO L373 chiAutomizerObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2020-11-29 18:50:58,128 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:50:58,128 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:50:58,128 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:50:58,128 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:50:58,129 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:50:58,129 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:50:58,129 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:50:58,129 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:50:58,145 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states. [2020-11-29 18:50:58,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2020-11-29 18:50:58,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:50:58,170 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:50:58,178 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:50:58,179 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:50:58,179 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:50:58,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states. [2020-11-29 18:50:58,186 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2020-11-29 18:50:58,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:50:58,186 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:50:58,188 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:50:58,188 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:50:58,197 INFO L794 eck$LassoCheckResult]: Stem: 32#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(49);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0; 6#L-1true havoc main_#res;havoc main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~ret28, main_#t~ret29, main_#t~post30, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet12;havoc main_#t~nondet12;~id1~0 := main_#t~nondet13;havoc main_#t~nondet13;~st1~0 := main_#t~nondet14;havoc main_#t~nondet14;~send1~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode1~0 := main_#t~nondet16;havoc main_#t~nondet16;~alive1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~alive2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~alive3~0 := main_#t~nondet27;havoc main_#t~nondet27;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 58#L156true assume !(0 == ~r1~0);init_~tmp~0 := 0; 56#L156-1true init_#res := init_~tmp~0; 71#L225true main_#t~ret28 := init_#res;main_~i2~0 := main_#t~ret28;havoc main_#t~ret28; 41#L272true assume 0 == main_~i2~0;assume false; 53#L272-2true ~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; 70#L280-2true [2020-11-29 18:50:58,199 INFO L796 eck$LassoCheckResult]: Loop: 70#L280-2true assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 77#L57true assume !(0 != ~mode1~0 % 256); 68#L75true assume !(0 != ~alive1~0 % 256); 47#L75-2true ~mode1~0 := 1; 74#L57-2true havoc node2_#t~ite8, node2_#t~ite9, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 55#L89true assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 24#L92true assume !(node2_~m2~0 != ~nomsg~0); 23#L92-1true ~mode2~0 := 0; 51#L89-2true havoc node3_#t~ite10, node3_#t~ite11, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 57#L123true assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 46#L126true assume !(node3_~m3~0 != ~nomsg~0); 45#L126-1true ~mode3~0 := 0; 78#L123-2true ~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; 64#L233true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 62#L233-1true check_#res := check_~tmp~1; 31#L245true main_#t~ret29 := check_#res;main_~c1~0 := main_#t~ret29;havoc main_#t~ret29;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 39#L304true assume !(0 == assert_~arg % 256); 12#L299true main_#t~post30 := main_~i2~0;main_~i2~0 := 1 + main_#t~post30;havoc main_#t~post30; 70#L280-2true [2020-11-29 18:50:58,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:50:58,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1898425706, now seen corresponding path program 1 times [2020-11-29 18:50:58,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:50:58,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141575032] [2020-11-29 18:50:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:50:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:50:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:50:58,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141575032] [2020-11-29 18:50:58,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:50:58,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:50:58,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734411247] [2020-11-29 18:50:58,471 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 18:50:58,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:50:58,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1582780834, now seen corresponding path program 1 times [2020-11-29 18:50:58,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:50:58,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038864852] [2020-11-29 18:50:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:50:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:50:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:50:58,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038864852] [2020-11-29 18:50:58,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:50:58,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:50:58,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541288756] [2020-11-29 18:50:58,679 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 18:50:58,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:50:58,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:50:58,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:50:58,703 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 2 states. [2020-11-29 18:50:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:50:58,726 INFO L93 Difference]: Finished difference Result 75 states and 120 transitions. [2020-11-29 18:50:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:50:58,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 120 transitions. [2020-11-29 18:50:58,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2020-11-29 18:50:58,752 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 70 states and 115 transitions. [2020-11-29 18:50:58,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2020-11-29 18:50:58,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2020-11-29 18:50:58,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 115 transitions. [2020-11-29 18:50:58,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:50:58,756 INFO L691 BuchiCegarLoop]: Abstraction has 70 states and 115 transitions. [2020-11-29 18:50:58,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states and 115 transitions. [2020-11-29 18:50:58,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-29 18:50:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 18:50:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 115 transitions. [2020-11-29 18:50:58,801 INFO L714 BuchiCegarLoop]: Abstraction has 70 states and 115 transitions. [2020-11-29 18:50:58,802 INFO L594 BuchiCegarLoop]: Abstraction has 70 states and 115 transitions. [2020-11-29 18:50:58,802 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:50:58,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 115 transitions. [2020-11-29 18:50:58,809 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2020-11-29 18:50:58,810 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:50:58,810 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:50:58,813 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:50:58,813 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:50:58,815 INFO L794 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(49);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0; 173#L-1 havoc main_#res;havoc main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~ret28, main_#t~ret29, main_#t~post30, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet12;havoc main_#t~nondet12;~id1~0 := main_#t~nondet13;havoc main_#t~nondet13;~st1~0 := main_#t~nondet14;havoc main_#t~nondet14;~send1~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode1~0 := main_#t~nondet16;havoc main_#t~nondet16;~alive1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~alive2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~alive3~0 := main_#t~nondet27;havoc main_#t~nondet27;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 174#L156 assume !(0 == ~r1~0);init_~tmp~0 := 0; 163#L156-1 init_#res := init_~tmp~0; 225#L225 main_#t~ret28 := init_#res;main_~i2~0 := main_#t~ret28;havoc main_#t~ret28; 214#L272 assume !(0 == main_~i2~0); 215#L272-2 ~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; 184#L280-2 [2020-11-29 18:50:58,815 INFO L796 eck$LassoCheckResult]: Loop: 184#L280-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 231#L57 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; 226#L61 assume !(node1_~m1~0 != ~nomsg~0); 168#L61-1 ~mode1~0 := 0; 219#L57-2 havoc node2_#t~ite8, node2_#t~ite9, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 224#L89 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 198#L92 assume !(node2_~m2~0 != ~nomsg~0); 197#L92-1 ~mode2~0 := 0; 180#L89-2 havoc node3_#t~ite10, node3_#t~ite11, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 222#L123 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 218#L126 assume !(node3_~m3~0 != ~nomsg~0); 171#L126-1 ~mode3~0 := 0; 212#L123-2 ~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; 228#L233 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 187#L233-1 check_#res := check_~tmp~1; 206#L245 main_#t~ret29 := check_#res;main_~c1~0 := main_#t~ret29;havoc main_#t~ret29;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 207#L304 assume !(0 == assert_~arg % 256); 183#L299 main_#t~post30 := main_~i2~0;main_~i2~0 := 1 + main_#t~post30;havoc main_#t~post30; 184#L280-2 [2020-11-29 18:50:58,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:50:58,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1898425768, now seen corresponding path program 1 times [2020-11-29 18:50:58,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:50:58,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168299336] [2020-11-29 18:50:58,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:50:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:50:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:50:58,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168299336] [2020-11-29 18:50:58,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:50:58,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:50:58,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674560646] [2020-11-29 18:50:58,902 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 18:50:58,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:50:58,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1181507516, now seen corresponding path program 1 times [2020-11-29 18:50:58,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:50:58,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588687050] [2020-11-29 18:50:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:50:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:50:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:50:59,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588687050] [2020-11-29 18:50:59,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:50:59,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:50:59,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058598431] [2020-11-29 18:50:59,036 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 18:50:59,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:50:59,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:50:59,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:50:59,037 INFO L87 Difference]: Start difference. First operand 70 states and 115 transitions. cyclomatic complexity: 46 Second operand 5 states. [2020-11-29 18:50:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:50:59,242 INFO L93 Difference]: Finished difference Result 120 states and 192 transitions. [2020-11-29 18:50:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:50:59,243 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 192 transitions. [2020-11-29 18:50:59,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2020-11-29 18:50:59,247 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 117 states and 173 transitions. [2020-11-29 18:50:59,247 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2020-11-29 18:50:59,247 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2020-11-29 18:50:59,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 173 transitions. [2020-11-29 18:50:59,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:50:59,249 INFO L691 BuchiCegarLoop]: Abstraction has 117 states and 173 transitions. [2020-11-29 18:50:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 173 transitions. [2020-11-29 18:50:59,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 70. [2020-11-29 18:50:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 18:50:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2020-11-29 18:50:59,260 INFO L714 BuchiCegarLoop]: Abstraction has 70 states and 98 transitions. [2020-11-29 18:50:59,261 INFO L594 BuchiCegarLoop]: Abstraction has 70 states and 98 transitions. [2020-11-29 18:50:59,262 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 18:50:59,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 98 transitions. [2020-11-29 18:50:59,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2020-11-29 18:50:59,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:50:59,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:50:59,265 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:50:59,265 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:50:59,266 INFO L794 eck$LassoCheckResult]: Stem: 412#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(49);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0; 377#L-1 havoc main_#res;havoc main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~ret28, main_#t~ret29, main_#t~post30, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet12;havoc main_#t~nondet12;~id1~0 := main_#t~nondet13;havoc main_#t~nondet13;~st1~0 := main_#t~nondet14;havoc main_#t~nondet14;~send1~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode1~0 := main_#t~nondet16;havoc main_#t~nondet16;~alive1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~alive2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~alive3~0 := main_#t~nondet27;havoc main_#t~nondet27;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 378#L156 assume 0 == ~r1~0; 367#L157 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 >= 1; 368#L158 assume ~id1~0 >= 0; 404#L159 assume 0 == ~st1~0; 381#L160 assume ~send1~0 == ~id1~0; 382#L161 assume 0 == ~mode1~0 % 256; 413#L162 assume ~id2~0 >= 0; 428#L163 assume 0 == ~st2~0; 395#L164 assume ~send2~0 == ~id2~0; 396#L165 assume 0 == ~mode2~0 % 256; 400#L166 assume ~id3~0 >= 0; 421#L167 assume 0 == ~st3~0; 369#L168 assume ~send3~0 == ~id3~0; 370#L169 assume 0 == ~mode3~0 % 256; 405#L170 assume ~id1~0 != ~id2~0; 383#L171 assume ~id1~0 != ~id3~0; 384#L172 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 414#L156-1 init_#res := init_~tmp~0; 430#L225 main_#t~ret28 := init_#res;main_~i2~0 := main_#t~ret28;havoc main_#t~ret28; 418#L272 assume !(0 == main_~i2~0); 419#L272-2 ~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; 388#L280-2 [2020-11-29 18:50:59,266 INFO L796 eck$LassoCheckResult]: Loop: 388#L280-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 436#L57 assume !(0 != ~mode1~0 % 256); 434#L75 assume !(0 != ~alive1~0 % 256); 380#L75-2 ~mode1~0 := 1; 424#L57-2 havoc node2_#t~ite8, node2_#t~ite9, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 429#L89 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 402#L92 assume !(node2_~m2~0 != ~nomsg~0); 401#L92-1 ~mode2~0 := 0; 386#L89-2 havoc node3_#t~ite10, node3_#t~ite11, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 427#L123 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 423#L126 assume !(node3_~m3~0 != ~nomsg~0); 375#L126-1 ~mode3~0 := 0; 417#L123-2 ~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; 433#L233 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 393#L233-1 check_#res := check_~tmp~1; 410#L245 main_#t~ret29 := check_#res;main_~c1~0 := main_#t~ret29;havoc main_#t~ret29;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 411#L304 assume !(0 == assert_~arg % 256); 387#L299 main_#t~post30 := main_~i2~0;main_~i2~0 := 1 + main_#t~post30;havoc main_#t~post30; 388#L280-2 [2020-11-29 18:50:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:50:59,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1524872798, now seen corresponding path program 1 times [2020-11-29 18:50:59,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:50:59,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226840575] [2020-11-29 18:50:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:50:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:50:59,316 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:50:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:50:59,340 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:50:59,370 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:50:59,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:50:59,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1582780834, now seen corresponding path program 2 times [2020-11-29 18:50:59,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:50:59,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362197177] [2020-11-29 18:50:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:50:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:50:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:50:59,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362197177] [2020-11-29 18:50:59,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:50:59,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:50:59,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230374351] [2020-11-29 18:50:59,484 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 18:50:59,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:50:59,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:50:59,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:50:59,485 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. cyclomatic complexity: 29 Second operand 5 states. [2020-11-29 18:50:59,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:50:59,572 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2020-11-29 18:50:59,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:50:59,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 100 transitions. [2020-11-29 18:50:59,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2020-11-29 18:50:59,578 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 70 states and 96 transitions. [2020-11-29 18:50:59,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2020-11-29 18:50:59,579 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2020-11-29 18:50:59,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 96 transitions. [2020-11-29 18:50:59,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:50:59,580 INFO L691 BuchiCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-11-29 18:50:59,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states and 96 transitions. [2020-11-29 18:50:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-29 18:50:59,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 18:50:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-11-29 18:50:59,585 INFO L714 BuchiCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-11-29 18:50:59,585 INFO L594 BuchiCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-11-29 18:50:59,585 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 18:50:59,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 96 transitions. [2020-11-29 18:50:59,586 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2020-11-29 18:50:59,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:50:59,591 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:50:59,592 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:50:59,594 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:50:59,594 INFO L794 eck$LassoCheckResult]: Stem: 567#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(49);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0; 529#L-1 havoc main_#res;havoc main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~ret28, main_#t~ret29, main_#t~post30, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet12;havoc main_#t~nondet12;~id1~0 := main_#t~nondet13;havoc main_#t~nondet13;~st1~0 := main_#t~nondet14;havoc main_#t~nondet14;~send1~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode1~0 := main_#t~nondet16;havoc main_#t~nondet16;~alive1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~alive2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~alive3~0 := main_#t~nondet27;havoc main_#t~nondet27;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 530#L156 assume 0 == ~r1~0; 522#L157 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 >= 1; 523#L158 assume ~id1~0 >= 0; 559#L159 assume 0 == ~st1~0; 536#L160 assume ~send1~0 == ~id1~0; 537#L161 assume 0 == ~mode1~0 % 256; 568#L162 assume ~id2~0 >= 0; 583#L163 assume 0 == ~st2~0; 550#L164 assume ~send2~0 == ~id2~0; 551#L165 assume 0 == ~mode2~0 % 256; 555#L166 assume ~id3~0 >= 0; 576#L167 assume 0 == ~st3~0; 524#L168 assume ~send3~0 == ~id3~0; 525#L169 assume 0 == ~mode3~0 % 256; 560#L170 assume ~id1~0 != ~id2~0; 540#L171 assume ~id1~0 != ~id3~0; 541#L172 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 569#L156-1 init_#res := init_~tmp~0; 585#L225 main_#t~ret28 := init_#res;main_~i2~0 := main_#t~ret28;havoc main_#t~ret28; 573#L272 assume !(0 == main_~i2~0); 574#L272-2 ~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; 539#L280-2 [2020-11-29 18:50:59,594 INFO L796 eck$LassoCheckResult]: Loop: 539#L280-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 591#L57 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; 586#L61 assume !(node1_~m1~0 != ~nomsg~0); 527#L61-1 ~mode1~0 := 0; 579#L57-2 havoc node2_#t~ite8, node2_#t~ite9, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 584#L89 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 557#L92 assume !(node2_~m2~0 != ~nomsg~0); 556#L92-1 ~mode2~0 := 0; 543#L89-2 havoc node3_#t~ite10, node3_#t~ite11, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 582#L123 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 578#L126 assume !(node3_~m3~0 != ~nomsg~0); 532#L126-1 ~mode3~0 := 0; 572#L123-2 ~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; 588#L233 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 564#L234 assume ~r1~0 < 3;check_~tmp~1 := 1; 546#L233-1 check_#res := check_~tmp~1; 565#L245 main_#t~ret29 := check_#res;main_~c1~0 := main_#t~ret29;havoc main_#t~ret29;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 566#L304 assume !(0 == assert_~arg % 256); 538#L299 main_#t~post30 := main_~i2~0;main_~i2~0 := 1 + main_#t~post30;havoc main_#t~post30; 539#L280-2 [2020-11-29 18:50:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:50:59,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1524872798, now seen corresponding path program 2 times [2020-11-29 18:50:59,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:50:59,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730046791] [2020-11-29 18:50:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:50:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:50:59,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:50:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:50:59,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:50:59,670 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:50:59,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:50:59,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1644643476, now seen corresponding path program 1 times [2020-11-29 18:50:59,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:50:59,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836601751] [2020-11-29 18:50:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:50:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:50:59,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:50:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:50:59,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:50:59,732 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:50:59,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:50:59,737 INFO L82 PathProgramCache]: Analyzing trace with hash 309767959, now seen corresponding path program 1 times [2020-11-29 18:50:59,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:50:59,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843148327] [2020-11-29 18:50:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:50:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:50:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:50:59,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843148327] [2020-11-29 18:50:59,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:50:59,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:50:59,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946191495] [2020-11-29 18:51:00,416 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2020-11-29 18:51:00,787 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-11-29 18:51:00,801 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:51:00,801 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:51:00,802 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:51:00,802 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:51:00,802 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:51:00,802 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:51:00,802 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:51:00,803 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:51:00,803 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2020-11-29 18:51:00,803 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:51:00,803 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:51:00,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:00,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,605 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2020-11-29 18:51:01,726 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:51:01,726 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/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 [2020-11-29 18:51:01,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:51:01,731 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/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 [2020-11-29 18:51:01,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:51:01,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:51:01,800 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:51:01,801 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:51:01,801 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:51:01,802 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:51:01,802 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:51:01,802 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:51:01,802 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:51:01,802 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:51:01,802 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:51:01,802 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2020-11-29 18:51:01,802 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:51:01,802 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:51:01,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:01,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:51:02,534 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:51:02,538 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/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 [2020-11-29 18:51:02,545 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:51:02,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:51:02,547 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:51:02,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:51:02,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:51:02,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:51:02,549 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:51:02,549 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:51:02,551 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:51:02,560 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:51:02,560 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_24aa62c0-e7f1-4fd1-9de0-f72053ce5d27/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:51:02,567 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:51:02,567 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:51:02,567 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:51:02,568 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 11 Supporting invariants [] Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:51:02,604 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:51:02,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:51:02,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:51:02,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:51:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:51:02,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:51:02,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:51:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:51:02,836 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 18:51:02,837 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 96 transitions. cyclomatic complexity: 27 Second operand 3 states. [2020-11-29 18:51:02,930 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 96 transitions. cyclomatic complexity: 27. Second operand 3 states. Result 117 states and 170 transitions. Complement of second has 4 states. [2020-11-29 18:51:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 18:51:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:51:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2020-11-29 18:51:02,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 96 transitions. Stem has 23 letters. Loop has 19 letters. [2020-11-29 18:51:02,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:51:02,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 96 transitions. Stem has 42 letters. Loop has 19 letters. [2020-11-29 18:51:02,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:51:02,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 96 transitions. Stem has 23 letters. Loop has 38 letters. [2020-11-29 18:51:02,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:51:02,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 170 transitions. [2020-11-29 18:51:02,943 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:51:02,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 0 states and 0 transitions. [2020-11-29 18:51:02,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 18:51:02,944 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 18:51:02,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 18:51:02,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:51:02,944 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:51:02,944 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:51:02,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:51:02,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:51:02,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:51:02,946 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2020-11-29 18:51:02,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:51:02,946 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 18:51:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:51:02,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 18:51:02,947 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:51:02,947 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:51:02,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 18:51:02,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 18:51:02,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 18:51:02,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:51:02,947 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:51:02,947 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:51:02,948 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:51:02,948 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 18:51:02,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:51:02,948 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:51:02,951 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 18:51:02,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:51:02 BoogieIcfgContainer [2020-11-29 18:51:02,957 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:51:02,958 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:51:02,958 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:51:02,958 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:51:02,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:50:58" (3/4) ... [2020-11-29 18:51:02,961 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:51:02,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:51:02,964 INFO L168 Benchmark]: Toolchain (without parser) took 6631.14 ms. Allocated memory was 92.3 MB in the beginning and 148.9 MB in the end (delta: 56.6 MB). Free memory was 57.0 MB in the beginning and 121.3 MB in the end (delta: -64.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:51:02,965 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 92.3 MB. Free memory was 63.1 MB in the beginning and 63.0 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:51:02,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.36 ms. Allocated memory is still 92.3 MB. Free memory was 56.8 MB in the beginning and 66.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:02,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.99 ms. Allocated memory is still 92.3 MB. Free memory was 66.2 MB in the beginning and 64.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:02,973 INFO L168 Benchmark]: Boogie Preprocessor took 69.99 ms. Allocated memory is still 92.3 MB. Free memory was 64.3 MB in the beginning and 62.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:02,974 INFO L168 Benchmark]: RCFGBuilder took 1059.01 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 62.5 MB in the beginning and 101.7 MB in the end (delta: -39.2 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:02,974 INFO L168 Benchmark]: BuchiAutomizer took 4887.82 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 101.7 MB in the beginning and 121.3 MB in the end (delta: -19.6 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:02,976 INFO L168 Benchmark]: Witness Printer took 3.82 ms. Allocated memory is still 148.9 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:51:02,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 92.3 MB. Free memory was 63.1 MB in the beginning and 63.0 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 515.36 ms. Allocated memory is still 92.3 MB. Free memory was 56.8 MB in the beginning and 66.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.99 ms. Allocated memory is still 92.3 MB. Free memory was 66.2 MB in the beginning and 64.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.99 ms. Allocated memory is still 92.3 MB. Free memory was 64.3 MB in the beginning and 62.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1059.01 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 62.5 MB in the beginning and 101.7 MB in the end (delta: -39.2 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4887.82 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 101.7 MB in the beginning and 121.3 MB in the end (delta: -19.6 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.82 ms. Allocated memory is still 148.9 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i2 + 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 4.8s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 3.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 47 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 70 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 421 SDtfs, 173 SDslu, 664 SDs, 0 SdLazy, 35 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI2 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital123 mio100 ax100 hnf99 lsp31 ukn100 mio100 lsp100 div168 bol100 ite100 ukn100 eq153 hnf75 smp100 dnf104 smp96 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...