./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.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_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c -s /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/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 3b6bb83e9069fd445b2fecdf306b1585c7d1cde8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:15:09,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:15:09,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:15:09,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:15:09,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:15:09,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:15:09,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:15:10,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:15:10,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:15:10,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:15:10,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:15:10,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:15:10,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:15:10,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:15:10,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:15:10,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:15:10,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:15:10,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:15:10,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:15:10,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:15:10,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:15:10,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:15:10,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:15:10,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:15:10,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:15:10,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:15:10,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:15:10,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:15:10,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:15:10,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:15:10,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:15:10,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:15:10,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:15:10,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:15:10,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:15:10,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:15:10,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:15:10,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:15:10,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:15:10,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:15:10,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:15:10,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:15:10,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:15:10,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:15:10,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:15:10,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:15:10,079 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:15:10,079 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:15:10,080 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:15:10,080 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:15:10,080 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:15:10,081 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:15:10,081 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:15:10,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:15:10,082 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:15:10,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:15:10,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:15:10,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:15:10,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:15:10,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:15:10,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:15:10,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:15:10,085 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:15:10,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:15:10,086 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:15:10,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:15:10,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:15:10,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:15:10,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:15:10,087 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:15:10,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:15:10,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:15:10,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:15:10,088 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:15:10,089 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:15:10,090 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_45852e53-c936-4c15-86e1-d50629e4515e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6bb83e9069fd445b2fecdf306b1585c7d1cde8 [2020-11-29 23:15:10,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:15:10,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:15:10,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:15:10,349 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:15:10,352 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:15:10,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-11-29 23:15:10,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/data/9430e27ca/24f0e51018e24e25a07d9c344d7541f4/FLAG39a01879e [2020-11-29 23:15:10,946 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:15:10,948 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-11-29 23:15:10,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/data/9430e27ca/24f0e51018e24e25a07d9c344d7541f4/FLAG39a01879e [2020-11-29 23:15:11,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/data/9430e27ca/24f0e51018e24e25a07d9c344d7541f4 [2020-11-29 23:15:11,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:15:11,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:15:11,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:15:11,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:15:11,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:15:11,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:11,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651a9ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11, skipping insertion in model container [2020-11-29 23:15:11,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:11,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:15:11,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:15:11,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:15:11,814 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:15:11,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:15:11,908 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:15:11,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11 WrapperNode [2020-11-29 23:15:11,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:15:11,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:15:11,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:15:11,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:15:11,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:11,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:11,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:15:11,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:15:11,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:15:11,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:15:11,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:11,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:11,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:11,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:12,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:12,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:12,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (1/1) ... [2020-11-29 23:15:12,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:15:12,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:15:12,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:15:12,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:15:12,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/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 23:15:12,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:15:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:15:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:15:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:15:12,951 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:15:12,953 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-29 23:15:12,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:15:12 BoogieIcfgContainer [2020-11-29 23:15:12,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:15:12,958 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:15:12,958 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:15:12,962 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:15:12,963 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:15:12,964 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:15:11" (1/3) ... [2020-11-29 23:15:12,965 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3544e5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:15:12, skipping insertion in model container [2020-11-29 23:15:12,965 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:15:12,965 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:11" (2/3) ... [2020-11-29 23:15:12,965 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3544e5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:15:12, skipping insertion in model container [2020-11-29 23:15:12,965 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:15:12,966 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:15:12" (3/3) ... [2020-11-29 23:15:12,968 INFO L373 chiAutomizerObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2020-11-29 23:15:13,023 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:15:13,023 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:15:13,023 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:15:13,023 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:15:13,023 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:15:13,024 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:15:13,024 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:15:13,024 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:15:13,039 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states. [2020-11-29 23:15:13,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 70 [2020-11-29 23:15:13,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:15:13,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:15:13,074 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] [2020-11-29 23:15:13,074 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 23:15:13,075 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:15:13,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states. [2020-11-29 23:15:13,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 70 [2020-11-29 23:15:13,086 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:15:13,086 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:15:13,090 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] [2020-11-29 23:15:13,090 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 23:15:13,098 INFO L794 eck$LassoCheckResult]: Stem: 95#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(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0; 12#L-1true havoc main_#res;havoc 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~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~ret40, main_#t~ret41, main_#t~post42, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~id2~0 := main_#t~nondet26;havoc main_#t~nondet26;~r2~0 := main_#t~nondet27;havoc main_#t~nondet27;~st2~0 := main_#t~nondet28;havoc main_#t~nondet28;~nl2~0 := main_#t~nondet29;havoc main_#t~nondet29;~m2~0 := main_#t~nondet30;havoc main_#t~nondet30;~max2~0 := main_#t~nondet31;havoc main_#t~nondet31;~mode2~0 := main_#t~nondet32;havoc main_#t~nondet32;~id3~0 := main_#t~nondet33;havoc main_#t~nondet33;~r3~0 := main_#t~nondet34;havoc main_#t~nondet34;~st3~0 := main_#t~nondet35;havoc main_#t~nondet35;~nl3~0 := main_#t~nondet36;havoc main_#t~nondet36;~m3~0 := main_#t~nondet37;havoc main_#t~nondet37;~max3~0 := main_#t~nondet38;havoc main_#t~nondet38;~mode3~0 := main_#t~nondet39;havoc main_#t~nondet39;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 114#L228true assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 86#L231-1true init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 4#L241true assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 123#L244-1true init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 40#L254true assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 43#L257-1true init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 96#L267true assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 77#L270-1true init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 132#L280true assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 103#L283-1true init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 22#L293true assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 5#L296-1true init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 59#L306true assume !(~id1~0 != ~id2~0);init_~tmp___5~0 := 0; 60#L306-1true init_#res := init_~tmp___5~0; 126#L415true main_#t~ret40 := init_#res;main_~i2~0 := main_#t~ret40;havoc main_#t~ret40; 97#L509true assume !(0 == main_~i2~0); 100#L509-2true ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 72#L523-2true [2020-11-29 23:15:13,099 INFO L796 eck$LassoCheckResult]: Loop: 72#L523-2true assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8; 56#L75true assume !(0 != ~mode1~0 % 256); 47#L100true assume !(~r1~0 < 1); 45#L100-1true ~mode1~0 := 1; 41#L75-2true havoc node2_#t~ite9, node2_#t~ite10; 110#L118true assume !(0 != ~mode2~0 % 256); 84#L143true assume !(~r2~0 < 2); 101#L143-1true ~mode2~0 := 1; 91#L118-2true havoc node3_#t~ite11, node3_#t~ite12; 28#L161true assume !(0 != ~mode3~0 % 256); 3#L186true assume !(~r3~0 < 2); 19#L186-1true ~mode3~0 := 1; 25#L161-2true ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 129#L423true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 131#L423-1true check_#res := check_~tmp~1; 68#L471true main_#t~ret41 := check_#res;main_~c1~0 := main_#t~ret41;havoc main_#t~ret41;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 93#L553true assume !(0 == assert_~arg % 256); 64#L548true main_#t~post42 := main_~i2~0;main_~i2~0 := 1 + main_#t~post42;havoc main_#t~post42; 72#L523-2true [2020-11-29 23:15:13,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:13,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1727567734, now seen corresponding path program 1 times [2020-11-29 23:15:13,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:13,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544654795] [2020-11-29 23:15:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:13,436 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 23:15:13,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544654795] [2020-11-29 23:15:13,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:15:13,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:15:13,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134419598] [2020-11-29 23:15:13,442 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:15:13,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:13,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1518597393, now seen corresponding path program 1 times [2020-11-29 23:15:13,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:13,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287762167] [2020-11-29 23:15:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:13,597 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 23:15:13,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287762167] [2020-11-29 23:15:13,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:15:13,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:15:13,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452975005] [2020-11-29 23:15:13,599 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:15:13,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:15:13,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:15:13,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:15:13,623 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 5 states. [2020-11-29 23:15:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:15:13,751 INFO L93 Difference]: Finished difference Result 134 states and 226 transitions. [2020-11-29 23:15:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:15:13,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 134 states and 226 transitions. [2020-11-29 23:15:13,758 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2020-11-29 23:15:13,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 134 states to 125 states and 210 transitions. [2020-11-29 23:15:13,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 125 [2020-11-29 23:15:13,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 125 [2020-11-29 23:15:13,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 210 transitions. [2020-11-29 23:15:13,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:15:13,772 INFO L691 BuchiCegarLoop]: Abstraction has 125 states and 210 transitions. [2020-11-29 23:15:13,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 210 transitions. [2020-11-29 23:15:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-11-29 23:15:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-29 23:15:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 210 transitions. [2020-11-29 23:15:13,806 INFO L714 BuchiCegarLoop]: Abstraction has 125 states and 210 transitions. [2020-11-29 23:15:13,806 INFO L594 BuchiCegarLoop]: Abstraction has 125 states and 210 transitions. [2020-11-29 23:15:13,806 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:15:13,806 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states and 210 transitions. [2020-11-29 23:15:13,809 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2020-11-29 23:15:13,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:15:13,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:15:13,811 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] [2020-11-29 23:15:13,811 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:15:13,811 INFO L794 eck$LassoCheckResult]: Stem: 401#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(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0; 302#L-1 havoc main_#res;havoc 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~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~ret40, main_#t~ret41, main_#t~post42, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~id2~0 := main_#t~nondet26;havoc main_#t~nondet26;~r2~0 := main_#t~nondet27;havoc main_#t~nondet27;~st2~0 := main_#t~nondet28;havoc main_#t~nondet28;~nl2~0 := main_#t~nondet29;havoc main_#t~nondet29;~m2~0 := main_#t~nondet30;havoc main_#t~nondet30;~max2~0 := main_#t~nondet31;havoc main_#t~nondet31;~mode2~0 := main_#t~nondet32;havoc main_#t~nondet32;~id3~0 := main_#t~nondet33;havoc main_#t~nondet33;~r3~0 := main_#t~nondet34;havoc main_#t~nondet34;~st3~0 := main_#t~nondet35;havoc main_#t~nondet35;~nl3~0 := main_#t~nondet36;havoc main_#t~nondet36;~m3~0 := main_#t~nondet37;havoc main_#t~nondet37;~max3~0 := main_#t~nondet38;havoc main_#t~nondet38;~mode3~0 := main_#t~nondet39;havoc main_#t~nondet39;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 303#L228 assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 349#L231-1 init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 286#L241 assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 287#L244-1 init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 350#L254 assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 351#L257-1 init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 356#L267 assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 321#L270-1 init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 392#L280 assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 367#L283-1 init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 322#L293 assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 291#L296-1 init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 292#L306 assume !(~id1~0 != ~id2~0);init_~tmp___5~0 := 0; 290#L306-1 init_#res := init_~tmp___5~0; 377#L415 main_#t~ret40 := init_#res;main_~i2~0 := main_#t~ret40;havoc main_#t~ret40; 402#L509 assume !(0 == main_~i2~0); 403#L509-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 381#L523-2 [2020-11-29 23:15:13,812 INFO L796 eck$LassoCheckResult]: Loop: 381#L523-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8; 374#L75 assume !(0 != ~mode1~0 % 256); 361#L100 assume !(~r1~0 < 1); 358#L100-1 ~mode1~0 := 1; 353#L75-2 havoc node2_#t~ite9, node2_#t~ite10; 354#L118 assume !(0 != ~mode2~0 % 256); 397#L143 assume !(~r2~0 < 2); 359#L143-1 ~mode2~0 := 1; 399#L118-2 havoc node3_#t~ite11, node3_#t~ite12; 329#L161 assume !(0 != ~mode3~0 % 256); 283#L186 assume !(~r3~0 < 2); 284#L186-1 ~mode3~0 := 1; 316#L161-2 ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 326#L423 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 391#L424 assume ~st1~0 + ~nl1~0 <= 1; 327#L425 assume ~st2~0 + ~nl2~0 <= 1; 328#L426 assume ~st3~0 + ~nl3~0 <= 1; 390#L427 assume ~r1~0 >= 2; 317#L431 assume ~r1~0 < 2; 318#L436 assume ~r1~0 >= 2; 325#L441 assume ~r1~0 < 2;check_~tmp~1 := 1; 363#L423-1 check_#res := check_~tmp~1; 386#L471 main_#t~ret41 := check_#res;main_~c1~0 := main_#t~ret41;havoc main_#t~ret41;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 387#L553 assume !(0 == assert_~arg % 256); 380#L548 main_#t~post42 := main_~i2~0;main_~i2~0 := 1 + main_#t~post42;havoc main_#t~post42; 381#L523-2 [2020-11-29 23:15:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:13,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1727567734, now seen corresponding path program 2 times [2020-11-29 23:15:13,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:13,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253731970] [2020-11-29 23:15:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:13,886 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 23:15:13,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253731970] [2020-11-29 23:15:13,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:15:13,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:15:13,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014057300] [2020-11-29 23:15:13,888 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:15:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1802356924, now seen corresponding path program 1 times [2020-11-29 23:15:13,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:13,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369773976] [2020-11-29 23:15:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:13,915 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 23:15:13,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369773976] [2020-11-29 23:15:13,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:15:13,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:15:13,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59281921] [2020-11-29 23:15:13,916 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:15:13,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:15:13,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:15:13,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:15:13,918 INFO L87 Difference]: Start difference. First operand 125 states and 210 transitions. cyclomatic complexity: 86 Second operand 5 states. [2020-11-29 23:15:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:15:14,039 INFO L93 Difference]: Finished difference Result 196 states and 320 transitions. [2020-11-29 23:15:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:15:14,044 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 320 transitions. [2020-11-29 23:15:14,048 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2020-11-29 23:15:14,050 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 193 states and 291 transitions. [2020-11-29 23:15:14,050 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 193 [2020-11-29 23:15:14,056 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2020-11-29 23:15:14,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 193 states and 291 transitions. [2020-11-29 23:15:14,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:15:14,058 INFO L691 BuchiCegarLoop]: Abstraction has 193 states and 291 transitions. [2020-11-29 23:15:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states and 291 transitions. [2020-11-29 23:15:14,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 125. [2020-11-29 23:15:14,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-29 23:15:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2020-11-29 23:15:14,072 INFO L714 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2020-11-29 23:15:14,072 INFO L594 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2020-11-29 23:15:14,072 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:15:14,072 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states and 183 transitions. [2020-11-29 23:15:14,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2020-11-29 23:15:14,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:15:14,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:15:14,081 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:15:14,082 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:15:14,090 INFO L794 eck$LassoCheckResult]: Stem: 735#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(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0; 636#L-1 havoc main_#res;havoc 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~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~ret40, main_#t~ret41, main_#t~post42, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~id2~0 := main_#t~nondet26;havoc main_#t~nondet26;~r2~0 := main_#t~nondet27;havoc main_#t~nondet27;~st2~0 := main_#t~nondet28;havoc main_#t~nondet28;~nl2~0 := main_#t~nondet29;havoc main_#t~nondet29;~m2~0 := main_#t~nondet30;havoc main_#t~nondet30;~max2~0 := main_#t~nondet31;havoc main_#t~nondet31;~mode2~0 := main_#t~nondet32;havoc main_#t~nondet32;~id3~0 := main_#t~nondet33;havoc main_#t~nondet33;~r3~0 := main_#t~nondet34;havoc main_#t~nondet34;~st3~0 := main_#t~nondet35;havoc main_#t~nondet35;~nl3~0 := main_#t~nondet36;havoc main_#t~nondet36;~m3~0 := main_#t~nondet37;havoc main_#t~nondet37;~max3~0 := main_#t~nondet38;havoc main_#t~nondet38;~mode3~0 := main_#t~nondet39;havoc main_#t~nondet39;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 637#L228 assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 683#L231-1 init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 620#L241 assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 621#L244-1 init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 684#L254 assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 685#L257-1 init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 690#L267 assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 655#L270-1 init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 726#L280 assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 701#L283-1 init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 656#L293 assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 623#L296-1 init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 624#L306 assume ~id1~0 != ~id2~0; 642#L307 assume ~id1~0 != ~id3~0; 643#L308 assume ~id2~0 != ~id3~0; 705#L309 assume ~id1~0 >= 0; 629#L310 assume ~id2~0 >= 0; 630#L311 assume ~id3~0 >= 0; 676#L312 assume 0 == ~r1~0; 677#L313 assume 0 == ~r2~0; 729#L314 assume 0 == ~r3~0; 667#L315 assume 0 != init_~r122~0 % 256; 668#L316 assume 0 != init_~r132~0 % 256; 710#L317 assume 0 != init_~r212~0 % 256; 640#L318 assume 0 != init_~r232~0 % 256; 641#L319 assume 0 != init_~r312~0 % 256; 704#L320 assume 0 != init_~r322~0 % 256; 627#L321 assume ~max1~0 == ~id1~0; 628#L322 assume ~max2~0 == ~id2~0; 674#L323 assume ~max3~0 == ~id3~0; 675#L324 assume 0 == ~st1~0; 728#L325 assume 0 == ~st2~0; 665#L326 assume 0 == ~st3~0; 666#L327 assume 0 == ~nl1~0; 709#L328 assume 0 == ~nl2~0; 638#L329 assume 0 == ~nl3~0; 639#L330 assume 0 == ~mode1~0 % 256; 703#L331 assume 0 == ~mode2~0 % 256; 625#L332 assume 0 == ~mode3~0 % 256;init_~tmp___5~0 := 1; 626#L306-1 init_#res := init_~tmp___5~0; 713#L415 main_#t~ret40 := init_#res;main_~i2~0 := main_#t~ret40;havoc main_#t~ret40; 736#L509 assume !(0 == main_~i2~0); 737#L509-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 715#L523-2 [2020-11-29 23:15:14,090 INFO L796 eck$LassoCheckResult]: Loop: 715#L523-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8; 707#L75 assume !(0 != ~mode1~0 % 256); 695#L100 assume !(~r1~0 < 1); 692#L100-1 ~mode1~0 := 1; 687#L75-2 havoc node2_#t~ite9, node2_#t~ite10; 688#L118 assume !(0 != ~mode2~0 % 256); 731#L143 assume !(~r2~0 < 2); 693#L143-1 ~mode2~0 := 1; 733#L118-2 havoc node3_#t~ite11, node3_#t~ite12; 663#L161 assume !(0 != ~mode3~0 % 256); 617#L186 assume !(~r3~0 < 2); 618#L186-1 ~mode3~0 := 1; 650#L161-2 ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 658#L423 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 725#L424 assume ~st1~0 + ~nl1~0 <= 1; 661#L425 assume ~st2~0 + ~nl2~0 <= 1; 662#L426 assume ~st3~0 + ~nl3~0 <= 1; 724#L427 assume ~r1~0 >= 2; 651#L431 assume ~r1~0 < 2; 652#L436 assume ~r1~0 >= 2; 660#L441 assume ~r1~0 < 2;check_~tmp~1 := 1; 697#L423-1 check_#res := check_~tmp~1; 720#L471 main_#t~ret41 := check_#res;main_~c1~0 := main_#t~ret41;havoc main_#t~ret41;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 721#L553 assume !(0 == assert_~arg % 256); 714#L548 main_#t~post42 := main_~i2~0;main_~i2~0 := 1 + main_#t~post42;havoc main_#t~post42; 715#L523-2 [2020-11-29 23:15:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:14,090 INFO L82 PathProgramCache]: Analyzing trace with hash -97176065, now seen corresponding path program 1 times [2020-11-29 23:15:14,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:14,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408283138] [2020-11-29 23:15:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:15:14,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:15:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:15:14,257 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:15:14,317 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:15:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1802356924, now seen corresponding path program 2 times [2020-11-29 23:15:14,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:14,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799240154] [2020-11-29 23:15:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:14,351 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 23:15:14,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799240154] [2020-11-29 23:15:14,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:15:14,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:15:14,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112118460] [2020-11-29 23:15:14,353 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:15:14,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:15:14,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:15:14,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:15:14,354 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. cyclomatic complexity: 59 Second operand 3 states. [2020-11-29 23:15:14,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:15:14,429 INFO L93 Difference]: Finished difference Result 177 states and 260 transitions. [2020-11-29 23:15:14,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:15:14,430 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 260 transitions. [2020-11-29 23:15:14,432 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 120 [2020-11-29 23:15:14,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 177 states and 260 transitions. [2020-11-29 23:15:14,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 177 [2020-11-29 23:15:14,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2020-11-29 23:15:14,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 260 transitions. [2020-11-29 23:15:14,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:15:14,437 INFO L691 BuchiCegarLoop]: Abstraction has 177 states and 260 transitions. [2020-11-29 23:15:14,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 260 transitions. [2020-11-29 23:15:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-11-29 23:15:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-29 23:15:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 260 transitions. [2020-11-29 23:15:14,455 INFO L714 BuchiCegarLoop]: Abstraction has 177 states and 260 transitions. [2020-11-29 23:15:14,460 INFO L594 BuchiCegarLoop]: Abstraction has 177 states and 260 transitions. [2020-11-29 23:15:14,460 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:15:14,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 260 transitions. [2020-11-29 23:15:14,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 120 [2020-11-29 23:15:14,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:15:14,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:15:14,469 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:15:14,469 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:15:14,470 INFO L794 eck$LassoCheckResult]: Stem: 1043#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(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0; 944#L-1 havoc main_#res;havoc 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~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~ret40, main_#t~ret41, main_#t~post42, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~id2~0 := main_#t~nondet26;havoc main_#t~nondet26;~r2~0 := main_#t~nondet27;havoc main_#t~nondet27;~st2~0 := main_#t~nondet28;havoc main_#t~nondet28;~nl2~0 := main_#t~nondet29;havoc main_#t~nondet29;~m2~0 := main_#t~nondet30;havoc main_#t~nondet30;~max2~0 := main_#t~nondet31;havoc main_#t~nondet31;~mode2~0 := main_#t~nondet32;havoc main_#t~nondet32;~id3~0 := main_#t~nondet33;havoc main_#t~nondet33;~r3~0 := main_#t~nondet34;havoc main_#t~nondet34;~st3~0 := main_#t~nondet35;havoc main_#t~nondet35;~nl3~0 := main_#t~nondet36;havoc main_#t~nondet36;~m3~0 := main_#t~nondet37;havoc main_#t~nondet37;~max3~0 := main_#t~nondet38;havoc main_#t~nondet38;~mode3~0 := main_#t~nondet39;havoc main_#t~nondet39;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 945#L228 assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 991#L231-1 init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 928#L241 assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 929#L244-1 init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 992#L254 assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 993#L257-1 init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 998#L267 assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 962#L270-1 init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 1034#L280 assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 1008#L283-1 init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 963#L293 assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 931#L296-1 init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 932#L306 assume ~id1~0 != ~id2~0; 950#L307 assume ~id1~0 != ~id3~0; 951#L308 assume ~id2~0 != ~id3~0; 1013#L309 assume ~id1~0 >= 0; 937#L310 assume ~id2~0 >= 0; 938#L311 assume ~id3~0 >= 0; 984#L312 assume 0 == ~r1~0; 985#L313 assume 0 == ~r2~0; 1037#L314 assume 0 == ~r3~0; 975#L315 assume 0 != init_~r122~0 % 256; 976#L316 assume 0 != init_~r132~0 % 256; 1018#L317 assume 0 != init_~r212~0 % 256; 948#L318 assume 0 != init_~r232~0 % 256; 949#L319 assume 0 != init_~r312~0 % 256; 1012#L320 assume 0 != init_~r322~0 % 256; 935#L321 assume ~max1~0 == ~id1~0; 936#L322 assume ~max2~0 == ~id2~0; 979#L323 assume ~max3~0 == ~id3~0; 980#L324 assume 0 == ~st1~0; 1035#L325 assume 0 == ~st2~0; 973#L326 assume 0 == ~st3~0; 974#L327 assume 0 == ~nl1~0; 1015#L328 assume 0 == ~nl2~0; 946#L329 assume 0 == ~nl3~0; 947#L330 assume 0 == ~mode1~0 % 256; 1011#L331 assume 0 == ~mode2~0 % 256; 933#L332 assume 0 == ~mode3~0 % 256;init_~tmp___5~0 := 1; 934#L306-1 init_#res := init_~tmp___5~0; 1019#L415 main_#t~ret40 := init_#res;main_~i2~0 := main_#t~ret40;havoc main_#t~ret40; 1044#L509 assume !(0 == main_~i2~0); 1045#L509-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 1046#L523-2 [2020-11-29 23:15:14,470 INFO L796 eck$LassoCheckResult]: Loop: 1046#L523-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8; 1058#L75 assume !(0 != ~mode1~0 % 256); 1057#L100 assume !(~r1~0 < 1); 1010#L100-1 ~mode1~0 := 1; 1098#L75-2 havoc node2_#t~ite9, node2_#t~ite10; 1094#L118 assume !(0 != ~mode2~0 % 256); 1090#L143 assume !(~r2~0 < 2); 1086#L143-1 ~mode2~0 := 1; 1084#L118-2 havoc node3_#t~ite11, node3_#t~ite12; 1077#L161 assume !(0 != ~mode3~0 % 256); 1075#L186 assume !(~r3~0 < 2); 1069#L186-1 ~mode3~0 := 1; 1067#L161-2 ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 1055#L423 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 1056#L424 assume ~st1~0 + ~nl1~0 <= 1; 1066#L425 assume ~st2~0 + ~nl2~0 <= 1; 1065#L426 assume ~st3~0 + ~nl3~0 <= 1; 1064#L427 assume !(~r1~0 >= 2); 1005#L430 assume 0 == ~st1~0 + ~st2~0 + ~st3~0; 1006#L431 assume ~r1~0 < 2; 1063#L436 assume !(~r1~0 >= 2); 1048#L440 assume 0 == ~nl1~0 + ~nl2~0 + ~nl3~0; 1049#L441 assume ~r1~0 < 2;check_~tmp~1 := 1; 1062#L423-1 check_#res := check_~tmp~1; 1061#L471 main_#t~ret41 := check_#res;main_~c1~0 := main_#t~ret41;havoc main_#t~ret41;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 1060#L553 assume !(0 == assert_~arg % 256); 1059#L548 main_#t~post42 := main_~i2~0;main_~i2~0 := 1 + main_#t~post42;havoc main_#t~post42; 1046#L523-2 [2020-11-29 23:15:14,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:14,471 INFO L82 PathProgramCache]: Analyzing trace with hash -97176065, now seen corresponding path program 2 times [2020-11-29 23:15:14,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:14,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959795909] [2020-11-29 23:15:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:15:14,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:15:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:15:14,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:15:14,611 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:15:14,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:14,616 INFO L82 PathProgramCache]: Analyzing trace with hash -77605052, now seen corresponding path program 1 times [2020-11-29 23:15:14,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:14,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926469720] [2020-11-29 23:15:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:15:14,628 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:15:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:15:14,638 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:15:14,647 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:15:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:14,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2113327750, now seen corresponding path program 1 times [2020-11-29 23:15:14,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:15:14,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515625235] [2020-11-29 23:15:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:15:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:14,762 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 23:15:14,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515625235] [2020-11-29 23:15:14,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:15:14,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:15:14,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832439606] [2020-11-29 23:15:15,116 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-11-29 23:15:15,418 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-11-29 23:15:15,430 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:15:15,433 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:15:15,434 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:15:15,434 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:15:15,434 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:15:15,434 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:15:15,434 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:15:15,434 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:15:15,435 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_floodmax.3.4.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2020-11-29 23:15:15,435 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:15:15,435 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:15:15,454 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 23:15:15,471 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 23:15:15,477 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 23:15:15,485 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 23:15:15,488 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 23:15:15,494 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 23:15:15,504 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 23:15:15,524 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 23:15:15,567 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 23:15:15,571 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 23:15:15,603 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 23:15:15,606 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 23:15:15,608 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 23:15:15,611 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 23:15:15,627 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 23:15:15,631 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 23:15:15,637 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 23:15:15,643 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 23:15:15,652 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 23:15:16,135 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:15:16,137 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/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 23:15:16,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:15:16,148 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:15:16,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:15:16,203 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:15:16,235 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:15:16,237 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:15:16,237 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:15:16,237 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:15:16,237 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:15:16,237 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:15:16,237 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:15:16,237 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:15:16,237 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:15:16,237 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_floodmax.3.4.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2020-11-29 23:15:16,237 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:15:16,237 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:15:16,240 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 23:15:16,259 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 23:15:16,262 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 23:15:16,268 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 23:15:16,270 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 23:15:16,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:15:16,282 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 23:15:16,286 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 23:15:16,297 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 23:15:16,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:15:16,304 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 23:15:16,306 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 23:15:16,309 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 23:15:16,319 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 23:15:16,325 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 23:15:16,327 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 23:15:16,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:15:16,332 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 23:15:16,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:15:16,769 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:15:16,773 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:15:16,782 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:15:16,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:15:16,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:15:16,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:15:16,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:15:16,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:15:16,787 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:15:16,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:15:16,789 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:15:16,797 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:15:16,797 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_45852e53-c936-4c15-86e1-d50629e4515e/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:15:16,807 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:15:16,811 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:15:16,812 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:15:16,813 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 11 Supporting invariants [] [2020-11-29 23:15:16,843 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:15:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:15:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:17,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:15:17,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:15:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:15:17,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:15:17,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:15:17,123 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 23:15:17,132 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 23:15:17,132 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 177 states and 260 transitions. cyclomatic complexity: 84 Second operand 3 states. [2020-11-29 23:15:17,214 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 177 states and 260 transitions. cyclomatic complexity: 84. Second operand 3 states. Result 296 states and 445 transitions. Complement of second has 4 states. [2020-11-29 23:15:17,215 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 23:15:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:15:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2020-11-29 23:15:17,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 183 transitions. Stem has 45 letters. Loop has 27 letters. [2020-11-29 23:15:17,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:15:17,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 183 transitions. Stem has 72 letters. Loop has 27 letters. [2020-11-29 23:15:17,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:15:17,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 183 transitions. Stem has 45 letters. Loop has 54 letters. [2020-11-29 23:15:17,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:15:17,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 296 states and 445 transitions. [2020-11-29 23:15:17,229 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:15:17,230 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 296 states to 0 states and 0 transitions. [2020-11-29 23:15:17,230 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:15:17,230 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:15:17,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:15:17,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:15:17,230 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:15:17,231 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:15:17,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:15:17,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:15:17,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:15:17,232 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2020-11-29 23:15:17,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:15:17,232 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 23:15:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:15:17,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 23:15:17,233 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:15:17,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:15:17,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:15:17,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:15:17,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:15:17,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:15:17,234 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:15:17,236 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:15:17,236 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:15:17,236 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 23:15:17,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:15:17,236 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:15:17,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:15:17,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:15:17 BoogieIcfgContainer [2020-11-29 23:15:17,242 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:15:17,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:15:17,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:15:17,243 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:15:17,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:15:12" (3/4) ... [2020-11-29 23:15:17,246 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:15:17,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:15:17,249 INFO L168 Benchmark]: Toolchain (without parser) took 5849.38 ms. Allocated memory was 79.7 MB in the beginning and 142.6 MB in the end (delta: 62.9 MB). Free memory was 47.5 MB in the beginning and 89.0 MB in the end (delta: -41.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:17,250 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 79.7 MB. Free memory was 39.3 MB in the beginning and 39.3 MB in the end (delta: 36.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:15:17,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.32 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 47.3 MB in the beginning and 69.0 MB in the end (delta: -21.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:17,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.47 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 66.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:17,256 INFO L168 Benchmark]: Boogie Preprocessor took 41.39 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 64.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:17,256 INFO L168 Benchmark]: RCFGBuilder took 923.90 ms. Allocated memory is still 96.5 MB. Free memory was 63.8 MB in the beginning and 60.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:17,257 INFO L168 Benchmark]: BuchiAutomizer took 4284.35 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 60.0 MB in the beginning and 89.0 MB in the end (delta: -29.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:17,257 INFO L168 Benchmark]: Witness Printer took 3.77 ms. Allocated memory is still 142.6 MB. Free memory is still 89.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:15:17,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 79.7 MB. Free memory was 39.3 MB in the beginning and 39.3 MB in the end (delta: 36.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 497.32 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 47.3 MB in the beginning and 69.0 MB in the end (delta: -21.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.47 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 66.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.39 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 64.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 923.90 ms. Allocated memory is still 96.5 MB. Free memory was 63.8 MB in the beginning and 60.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4284.35 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 60.0 MB in the beginning and 89.0 MB in the end (delta: -29.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.77 ms. Allocated memory is still 142.6 MB. Free memory is still 89.0 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 4.2s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 3.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 68 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 177 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 854 SDtfs, 375 SDslu, 1505 SDs, 0 SdLazy, 55 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI2 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital127 mio100 ax100 hnf97 lsp30 ukn100 mio100 lsp100 div123 bol100 ite100 ukn100 eq182 hnf86 smp100 dnf100 smp100 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 37ms 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...