./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.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_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/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 9c0e11420c6159c423774a743a8d51d6568f1ff7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:52:52,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:52:52,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:52:52,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:52:52,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:52:52,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:52:52,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:52:52,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:52:52,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:52:52,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:52:52,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:52:52,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:52:52,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:52:52,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:52:52,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:52:52,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:52:52,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:52:52,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:52:52,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:52:52,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:52:52,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:52:52,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:52:52,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:52:52,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:52:52,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:52:52,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:52:52,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:52:52,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:52:52,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:52:52,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:52:52,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:52:52,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:52:52,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:52:52,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:52:53,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:52:53,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:52:53,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:52:53,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:52:53,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:52:53,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:52:53,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:52:53,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 18:52:53,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:52:53,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:52:53,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:52:53,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:52:53,060 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:52:53,061 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:52:53,061 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:52:53,061 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:52:53,062 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:52:53,062 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:52:53,063 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:52:53,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:52:53,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:52:53,064 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:52:53,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:52:53,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:52:53,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:52:53,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:52:53,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:52:53,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:52:53,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:52:53,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:52:53,067 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:52:53,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:52:53,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:52:53,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:52:53,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:52:53,069 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:52:53,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:52:53,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:52:53,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:52:53,072 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:52:53,073 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:52:53,073 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_9ed60cbd-de24-4b52-9e02-b13c316613b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c0e11420c6159c423774a743a8d51d6568f1ff7 [2020-11-29 18:52:53,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:52:53,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:52:53,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:52:53,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:52:53,473 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:52:53,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2020-11-29 18:52:53,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/data/76a2abe81/912ad38b0aef43d488ec823838cfcd16/FLAG036a06afb [2020-11-29 18:52:54,116 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:52:54,117 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2020-11-29 18:52:54,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/data/76a2abe81/912ad38b0aef43d488ec823838cfcd16/FLAG036a06afb [2020-11-29 18:52:54,434 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/data/76a2abe81/912ad38b0aef43d488ec823838cfcd16 [2020-11-29 18:52:54,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:52:54,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:52:54,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:52:54,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:52:54,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:52:54,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:54,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d72aeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54, skipping insertion in model container [2020-11-29 18:52:54,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:54,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:52:54,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:52:54,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:52:54,814 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:52:54,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:52:54,920 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:52:54,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54 WrapperNode [2020-11-29 18:52:54,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:52:54,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:52:54,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:52:54,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:52:54,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:54,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:54,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:52:54,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:52:54,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:52:54,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:52:54,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:54,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:54,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:54,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:55,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:55,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:55,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (1/1) ... [2020-11-29 18:52:55,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:52:55,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:52:55,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:52:55,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:52:55,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:52:55,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:52:55,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:52:55,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:52:55,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:52:55,831 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:52:55,832 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-29 18:52:55,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:52:55 BoogieIcfgContainer [2020-11-29 18:52:55,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:52:55,835 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:52:55,835 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:52:55,838 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:52:55,847 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:52:55,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:52:54" (1/3) ... [2020-11-29 18:52:55,854 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4463ee26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:52:55, skipping insertion in model container [2020-11-29 18:52:55,854 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:52:55,855 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:52:54" (2/3) ... [2020-11-29 18:52:55,855 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4463ee26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:52:55, skipping insertion in model container [2020-11-29 18:52:55,855 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:52:55,855 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:52:55" (3/3) ... [2020-11-29 18:52:55,857 INFO L373 chiAutomizerObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2020-11-29 18:52:55,900 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:52:55,900 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:52:55,900 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:52:55,901 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:52:55,901 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:52:55,901 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:52:55,901 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:52:55,901 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:52:55,917 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states. [2020-11-29 18:52:55,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 66 [2020-11-29 18:52:55,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:52:55,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:52:55,962 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:52:55,963 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] [2020-11-29 18:52:55,963 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:52:55,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states. [2020-11-29 18:52:55,970 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 66 [2020-11-29 18:52:55,970 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:52:55,970 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:52:55,973 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:52:55,973 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] [2020-11-29 18:52:55,982 INFO L794 eck$LassoCheckResult]: Stem: 78#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(47);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0; 10#L-1true havoc main_#res;havoc 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~ret36, main_#t~ret37, main_#t~post38, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet15;havoc main_#t~nondet15;~id1~0 := main_#t~nondet16;havoc main_#t~nondet16;~st1~0 := main_#t~nondet17;havoc main_#t~nondet17;~send1~0 := main_#t~nondet18;havoc main_#t~nondet18;~mode1~0 := main_#t~nondet19;havoc main_#t~nondet19;~alive1~0 := main_#t~nondet20;havoc main_#t~nondet20;~id2~0 := main_#t~nondet21;havoc main_#t~nondet21;~st2~0 := main_#t~nondet22;havoc main_#t~nondet22;~send2~0 := main_#t~nondet23;havoc main_#t~nondet23;~mode2~0 := main_#t~nondet24;havoc main_#t~nondet24;~alive2~0 := main_#t~nondet25;havoc main_#t~nondet25;~id3~0 := main_#t~nondet26;havoc main_#t~nondet26;~st3~0 := main_#t~nondet27;havoc main_#t~nondet27;~send3~0 := main_#t~nondet28;havoc main_#t~nondet28;~mode3~0 := main_#t~nondet29;havoc main_#t~nondet29;~alive3~0 := main_#t~nondet30;havoc main_#t~nondet30;~id4~0 := main_#t~nondet31;havoc main_#t~nondet31;~st4~0 := main_#t~nondet32;havoc main_#t~nondet32;~send4~0 := main_#t~nondet33;havoc main_#t~nondet33;~mode4~0 := main_#t~nondet34;havoc main_#t~nondet34;~alive4~0 := main_#t~nondet35;havoc main_#t~nondet35;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 60#L201true assume !(0 == ~r1~0);init_~tmp~0 := 0; 58#L201-1true init_#res := init_~tmp~0; 46#L298true main_#t~ret36 := init_#res;main_~i2~0 := main_#t~ret36;havoc main_#t~ret36; 47#L350true assume !(0 == main_~i2~0); 52#L350-2true ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0 := 0; 90#L360-2true [2020-11-29 18:52:55,983 INFO L796 eck$LassoCheckResult]: Loop: 90#L360-2true assume !!(main_~i2~0 < 8);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 16#L65true assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 56#L69true assume !(node1_~m1~0 != ~nomsg~0); 71#L69-1true ~mode1~0 := 0; 11#L65-2true havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 41#L100true assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 23#L103true assume !(node2_~m2~0 != ~nomsg~0); 22#L103-1true ~mode2~0 := 0; 38#L100-2true havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 96#L134true assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 85#L137true assume !(node3_~m3~0 != ~nomsg~0); 84#L137-1true ~mode3~0 := 0; 102#L134-2true havoc node4_#t~ite13, node4_#t~ite14, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 59#L168true assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 64#L171true assume !(node4_~m4~0 != ~nomsg~0); 63#L171-1true ~mode4~0 := 0; 57#L168-2true ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 50#L306true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1 := 0; 53#L306-1true check_#res := check_~tmp~1; 13#L318true main_#t~ret37 := check_#res;main_~c1~0 := main_#t~ret37;havoc main_#t~ret37;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 5#L387true assume !(0 == assert_~arg % 256); 87#L382true main_#t~post38 := main_~i2~0;main_~i2~0 := 1 + main_#t~post38;havoc main_#t~post38; 90#L360-2true [2020-11-29 18:52:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:52:55,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1938506578, now seen corresponding path program 1 times [2020-11-29 18:52:55,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:52:55,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518909209] [2020-11-29 18:52:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:52:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:52:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:52:56,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518909209] [2020-11-29 18:52:56,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:52:56,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:52:56,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379221652] [2020-11-29 18:52:56,222 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 18:52:56,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:52:56,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1584807127, now seen corresponding path program 1 times [2020-11-29 18:52:56,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:52:56,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949602061] [2020-11-29 18:52:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:52:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:52:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:52:56,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949602061] [2020-11-29 18:52:56,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:52:56,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:52:56,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615108890] [2020-11-29 18:52:56,458 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 18:52:56,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:52:56,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:52:56,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:52:56,482 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 5 states. [2020-11-29 18:52:56,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:52:56,648 INFO L93 Difference]: Finished difference Result 167 states and 268 transitions. [2020-11-29 18:52:56,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:52:56,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167 states and 268 transitions. [2020-11-29 18:52:56,657 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 64 [2020-11-29 18:52:56,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167 states to 158 states and 236 transitions. [2020-11-29 18:52:56,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 158 [2020-11-29 18:52:56,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 158 [2020-11-29 18:52:56,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 158 states and 236 transitions. [2020-11-29 18:52:56,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:52:56,668 INFO L691 BuchiCegarLoop]: Abstraction has 158 states and 236 transitions. [2020-11-29 18:52:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states and 236 transitions. [2020-11-29 18:52:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 94. [2020-11-29 18:52:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-29 18:52:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 133 transitions. [2020-11-29 18:52:56,706 INFO L714 BuchiCegarLoop]: Abstraction has 94 states and 133 transitions. [2020-11-29 18:52:56,706 INFO L594 BuchiCegarLoop]: Abstraction has 94 states and 133 transitions. [2020-11-29 18:52:56,706 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:52:56,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 94 states and 133 transitions. [2020-11-29 18:52:56,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 64 [2020-11-29 18:52:56,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:52:56,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:52:56,718 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] [2020-11-29 18:52:56,719 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] [2020-11-29 18:52:56,720 INFO L794 eck$LassoCheckResult]: Stem: 351#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(47);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0; 312#L-1 havoc main_#res;havoc 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~ret36, main_#t~ret37, main_#t~post38, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet15;havoc main_#t~nondet15;~id1~0 := main_#t~nondet16;havoc main_#t~nondet16;~st1~0 := main_#t~nondet17;havoc main_#t~nondet17;~send1~0 := main_#t~nondet18;havoc main_#t~nondet18;~mode1~0 := main_#t~nondet19;havoc main_#t~nondet19;~alive1~0 := main_#t~nondet20;havoc main_#t~nondet20;~id2~0 := main_#t~nondet21;havoc main_#t~nondet21;~st2~0 := main_#t~nondet22;havoc main_#t~nondet22;~send2~0 := main_#t~nondet23;havoc main_#t~nondet23;~mode2~0 := main_#t~nondet24;havoc main_#t~nondet24;~alive2~0 := main_#t~nondet25;havoc main_#t~nondet25;~id3~0 := main_#t~nondet26;havoc main_#t~nondet26;~st3~0 := main_#t~nondet27;havoc main_#t~nondet27;~send3~0 := main_#t~nondet28;havoc main_#t~nondet28;~mode3~0 := main_#t~nondet29;havoc main_#t~nondet29;~alive3~0 := main_#t~nondet30;havoc main_#t~nondet30;~id4~0 := main_#t~nondet31;havoc main_#t~nondet31;~st4~0 := main_#t~nondet32;havoc main_#t~nondet32;~send4~0 := main_#t~nondet33;havoc main_#t~nondet33;~mode4~0 := main_#t~nondet34;havoc main_#t~nondet34;~alive4~0 := main_#t~nondet35;havoc main_#t~nondet35;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 307#L201 assume 0 == ~r1~0; 308#L202 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 + ~alive4~0 % 256 >= 1; 365#L203 assume ~id1~0 >= 0; 327#L204 assume 0 == ~st1~0; 328#L205 assume ~send1~0 == ~id1~0; 354#L206 assume 0 == ~mode1~0 % 256; 371#L207 assume ~id2~0 >= 0; 292#L208 assume 0 == ~st2~0; 293#L209 assume ~send2~0 == ~id2~0; 342#L210 assume 0 == ~mode2~0 % 256; 361#L211 assume ~id3~0 >= 0; 309#L212 assume 0 == ~st3~0; 310#L213 assume ~send3~0 == ~id3~0; 367#L214 assume 0 == ~mode3~0 % 256; 329#L215 assume ~id4~0 >= 0; 330#L216 assume 0 == ~st4~0; 356#L217 assume ~send4~0 == ~id4~0; 372#L218 assume 0 == ~mode4~0 % 256; 294#L219 assume ~id1~0 != ~id2~0; 295#L220 assume ~id1~0 != ~id3~0; 343#L221 assume ~id1~0 != ~id4~0; 362#L222 assume ~id2~0 != ~id3~0; 347#L223 assume ~id2~0 != ~id4~0; 348#L224 assume ~id3~0 != ~id4~0;init_~tmp~0 := 1; 305#L201-1 init_#res := init_~tmp~0; 306#L298 main_#t~ret36 := init_#res;main_~i2~0 := main_#t~ret36;havoc main_#t~ret36; 376#L350 assume !(0 == main_~i2~0); 377#L350-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0 := 0; 366#L360-2 [2020-11-29 18:52:56,721 INFO L796 eck$LassoCheckResult]: Loop: 366#L360-2 assume !!(main_~i2~0 < 8);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 325#L65 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 287#L69 assume !(node1_~m1~0 != ~nomsg~0); 289#L69-1 ~mode1~0 := 0; 313#L65-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 314#L100 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 344#L103 assume !(node2_~m2~0 != ~nomsg~0); 341#L103-1 ~mode2~0 := 0; 324#L100-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 370#L134 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 364#L137 assume !(node3_~m3~0 != ~nomsg~0); 318#L137-1 ~mode3~0 := 0; 355#L134-2 havoc node4_#t~ite13, node4_#t~ite14, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 302#L168 assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 304#L171 assume !(node4_~m4~0 != ~nomsg~0); 315#L171-1 ~mode4~0 := 0; 296#L168-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 297#L306 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1 := 0; 301#L306-1 check_#res := check_~tmp~1; 319#L318 main_#t~ret37 := check_#res;main_~c1~0 := main_#t~ret37;havoc main_#t~ret37;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 290#L387 assume !(0 == assert_~arg % 256); 291#L382 main_#t~post38 := main_~i2~0;main_~i2~0 := 1 + main_#t~post38;havoc main_#t~post38; 366#L360-2 [2020-11-29 18:52:56,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:52:56,726 INFO L82 PathProgramCache]: Analyzing trace with hash -805895157, now seen corresponding path program 1 times [2020-11-29 18:52:56,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:52:56,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998921875] [2020-11-29 18:52:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:52:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:52:56,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:52:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:52:56,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:52:56,853 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:52:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:52:56,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1584807127, now seen corresponding path program 2 times [2020-11-29 18:52:56,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:52:56,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006892613] [2020-11-29 18:52:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:52:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:52:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:52:56,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006892613] [2020-11-29 18:52:56,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:52:56,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:52:56,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189089220] [2020-11-29 18:52:56,954 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 18:52:56,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:52:56,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:52:56,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:52:56,955 INFO L87 Difference]: Start difference. First operand 94 states and 133 transitions. cyclomatic complexity: 40 Second operand 5 states. [2020-11-29 18:52:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:52:57,027 INFO L93 Difference]: Finished difference Result 97 states and 135 transitions. [2020-11-29 18:52:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:52:57,028 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 135 transitions. [2020-11-29 18:52:57,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 64 [2020-11-29 18:52:57,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 94 states and 131 transitions. [2020-11-29 18:52:57,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2020-11-29 18:52:57,032 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2020-11-29 18:52:57,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 131 transitions. [2020-11-29 18:52:57,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:52:57,033 INFO L691 BuchiCegarLoop]: Abstraction has 94 states and 131 transitions. [2020-11-29 18:52:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 131 transitions. [2020-11-29 18:52:57,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-11-29 18:52:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-29 18:52:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions. [2020-11-29 18:52:57,040 INFO L714 BuchiCegarLoop]: Abstraction has 94 states and 131 transitions. [2020-11-29 18:52:57,040 INFO L594 BuchiCegarLoop]: Abstraction has 94 states and 131 transitions. [2020-11-29 18:52:57,040 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 18:52:57,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 94 states and 131 transitions. [2020-11-29 18:52:57,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 64 [2020-11-29 18:52:57,042 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:52:57,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:52:57,043 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] [2020-11-29 18:52:57,043 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] [2020-11-29 18:52:57,044 INFO L794 eck$LassoCheckResult]: Stem: 554#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(47);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0; 515#L-1 havoc main_#res;havoc 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~ret36, main_#t~ret37, main_#t~post38, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet15;havoc main_#t~nondet15;~id1~0 := main_#t~nondet16;havoc main_#t~nondet16;~st1~0 := main_#t~nondet17;havoc main_#t~nondet17;~send1~0 := main_#t~nondet18;havoc main_#t~nondet18;~mode1~0 := main_#t~nondet19;havoc main_#t~nondet19;~alive1~0 := main_#t~nondet20;havoc main_#t~nondet20;~id2~0 := main_#t~nondet21;havoc main_#t~nondet21;~st2~0 := main_#t~nondet22;havoc main_#t~nondet22;~send2~0 := main_#t~nondet23;havoc main_#t~nondet23;~mode2~0 := main_#t~nondet24;havoc main_#t~nondet24;~alive2~0 := main_#t~nondet25;havoc main_#t~nondet25;~id3~0 := main_#t~nondet26;havoc main_#t~nondet26;~st3~0 := main_#t~nondet27;havoc main_#t~nondet27;~send3~0 := main_#t~nondet28;havoc main_#t~nondet28;~mode3~0 := main_#t~nondet29;havoc main_#t~nondet29;~alive3~0 := main_#t~nondet30;havoc main_#t~nondet30;~id4~0 := main_#t~nondet31;havoc main_#t~nondet31;~st4~0 := main_#t~nondet32;havoc main_#t~nondet32;~send4~0 := main_#t~nondet33;havoc main_#t~nondet33;~mode4~0 := main_#t~nondet34;havoc main_#t~nondet34;~alive4~0 := main_#t~nondet35;havoc main_#t~nondet35;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 510#L201 assume 0 == ~r1~0; 511#L202 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 + ~alive4~0 % 256 >= 1; 568#L203 assume ~id1~0 >= 0; 530#L204 assume 0 == ~st1~0; 531#L205 assume ~send1~0 == ~id1~0; 557#L206 assume 0 == ~mode1~0 % 256; 574#L207 assume ~id2~0 >= 0; 493#L208 assume 0 == ~st2~0; 494#L209 assume ~send2~0 == ~id2~0; 545#L210 assume 0 == ~mode2~0 % 256; 564#L211 assume ~id3~0 >= 0; 512#L212 assume 0 == ~st3~0; 513#L213 assume ~send3~0 == ~id3~0; 569#L214 assume 0 == ~mode3~0 % 256; 532#L215 assume ~id4~0 >= 0; 533#L216 assume 0 == ~st4~0; 558#L217 assume ~send4~0 == ~id4~0; 575#L218 assume 0 == ~mode4~0 % 256; 497#L219 assume ~id1~0 != ~id2~0; 498#L220 assume ~id1~0 != ~id3~0; 546#L221 assume ~id1~0 != ~id4~0; 565#L222 assume ~id2~0 != ~id3~0; 550#L223 assume ~id2~0 != ~id4~0; 551#L224 assume ~id3~0 != ~id4~0;init_~tmp~0 := 1; 505#L201-1 init_#res := init_~tmp~0; 506#L298 main_#t~ret36 := init_#res;main_~i2~0 := main_#t~ret36;havoc main_#t~ret36; 579#L350 assume !(0 == main_~i2~0); 580#L350-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0 := 0; 570#L360-2 [2020-11-29 18:52:57,044 INFO L796 eck$LassoCheckResult]: Loop: 570#L360-2 assume !!(main_~i2~0 < 8);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 528#L65 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 490#L69 assume !(node1_~m1~0 != ~nomsg~0); 492#L69-1 ~mode1~0 := 0; 516#L65-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 517#L100 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 547#L103 assume !(node2_~m2~0 != ~nomsg~0); 544#L103-1 ~mode2~0 := 0; 527#L100-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 573#L134 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 567#L137 assume !(node3_~m3~0 != ~nomsg~0); 520#L137-1 ~mode3~0 := 0; 559#L134-2 havoc node4_#t~ite13, node4_#t~ite14, node4_~m4~0;havoc node4_~m4~0;node4_~m4~0 := ~nomsg~0; 507#L168 assume 0 != ~mode4~0 % 256;node4_~m4~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 509#L171 assume !(node4_~m4~0 != ~nomsg~0); 521#L171-1 ~mode4~0 := 0; 499#L168-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 500#L306 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 524#L307 assume ~r1~0 < 4;check_~tmp~1 := 1; 504#L306-1 check_#res := check_~tmp~1; 523#L318 main_#t~ret37 := check_#res;main_~c1~0 := main_#t~ret37;havoc main_#t~ret37;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 495#L387 assume !(0 == assert_~arg % 256); 496#L382 main_#t~post38 := main_~i2~0;main_~i2~0 := 1 + main_#t~post38;havoc main_#t~post38; 570#L360-2 [2020-11-29 18:52:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:52:57,044 INFO L82 PathProgramCache]: Analyzing trace with hash -805895157, now seen corresponding path program 2 times [2020-11-29 18:52:57,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:52:57,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809487808] [2020-11-29 18:52:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:52:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:52:57,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:52:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:52:57,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:52:57,150 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:52:57,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:52:57,151 INFO L82 PathProgramCache]: Analyzing trace with hash 2027257535, now seen corresponding path program 1 times [2020-11-29 18:52:57,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:52:57,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364381274] [2020-11-29 18:52:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:52:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:52:57,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:52:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:52:57,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:52:57,200 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:52:57,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:52:57,200 INFO L82 PathProgramCache]: Analyzing trace with hash -2125885579, now seen corresponding path program 1 times [2020-11-29 18:52:57,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:52:57,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871944032] [2020-11-29 18:52:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:52:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:52:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:52:57,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871944032] [2020-11-29 18:52:57,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:52:57,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:52:57,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082717343] [2020-11-29 18:52:57,932 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 117 [2020-11-29 18:52:58,367 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 102 [2020-11-29 18:52:58,382 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:52:58,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:52:58,384 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:52:58,384 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:52:58,384 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:52:58,384 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:52:58,385 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:52:58,385 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:52:58,385 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_Iteration3_Loop [2020-11-29 18:52:58,385 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:52:58,385 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:52:58,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:58,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,163 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-29 18:52:59,310 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:52:59,311 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:52:59,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:52:59,336 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:52:59,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:52:59,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:52:59,411 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:52:59,413 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:52:59,413 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:52:59,413 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:52:59,413 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:52:59,413 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:52:59,413 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:52:59,414 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:52:59,414 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:52:59,414 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_Iteration3_Loop [2020-11-29 18:52:59,414 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:52:59,414 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:52:59,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:52:59,567 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 18:52:59,571 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 18:52:59,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:53:00,109 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-29 18:53:00,326 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2020-11-29 18:53:00,482 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-29 18:53:00,507 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:53:00,512 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ed60cbd-de24-4b52-9e02-b13c316613b9/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 18:53:00,528 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:53:00,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:53:00,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:53:00,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:53:00,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:53:00,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:53:00,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:53:00,539 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:53:00,542 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:53:00,603 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:53:00,603 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_9ed60cbd-de24-4b52-9e02-b13c316613b9/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:53:00,615 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:53:00,615 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:53:00,615 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:53:00,616 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 15 Supporting invariants [] Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:53:00,648 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:53:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:53:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:53:00,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:53:00,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:53:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:53:00,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:53:00,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:53:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:53:00,856 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 18:53:00,858 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states and 131 transitions. cyclomatic complexity: 38 Second operand 3 states. [2020-11-29 18:53:00,920 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states and 131 transitions. cyclomatic complexity: 38. Second operand 3 states. Result 158 states and 233 transitions. Complement of second has 4 states. [2020-11-29 18:53:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 18:53:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:53:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2020-11-29 18:53:00,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 131 transitions. Stem has 30 letters. Loop has 23 letters. [2020-11-29 18:53:00,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:53:00,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 131 transitions. Stem has 53 letters. Loop has 23 letters. [2020-11-29 18:53:00,925 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:53:00,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 131 transitions. Stem has 30 letters. Loop has 46 letters. [2020-11-29 18:53:00,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:53:00,926 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 233 transitions. [2020-11-29 18:53:00,928 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:53:00,928 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 0 states and 0 transitions. [2020-11-29 18:53:00,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 18:53:00,929 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 18:53:00,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 18:53:00,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:53:00,929 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:53:00,929 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:53:00,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:53:00,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:53:00,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:53:00,930 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2020-11-29 18:53:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:53:00,930 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 18:53:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:53:00,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 18:53:00,931 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:53:00,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:53:00,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 18:53:00,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 18:53:00,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 18:53:00,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:53:00,932 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:53:00,932 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:53:00,932 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:53:00,932 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 18:53:00,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:53:00,932 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:53:00,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 18:53:00,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:53:00 BoogieIcfgContainer [2020-11-29 18:53:00,937 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:53:00,938 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:53:00,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:53:00,938 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:53:00,939 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:52:55" (3/4) ... [2020-11-29 18:53:00,941 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:53:00,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:53:00,943 INFO L168 Benchmark]: Toolchain (without parser) took 6502.59 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 71.6 MB in the beginning and 77.7 MB in the end (delta: -6.1 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:53:00,944 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory was 79.5 MB in the beginning and 79.4 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:53:00,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.81 ms. Allocated memory is still 107.0 MB. Free memory was 71.4 MB in the beginning and 78.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:53:00,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.45 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 76.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:53:00,945 INFO L168 Benchmark]: Boogie Preprocessor took 42.45 ms. Allocated memory is still 107.0 MB. Free memory was 76.4 MB in the beginning and 74.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:53:00,946 INFO L168 Benchmark]: RCFGBuilder took 813.11 ms. Allocated memory is still 107.0 MB. Free memory was 74.8 MB in the beginning and 81.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:53:00,947 INFO L168 Benchmark]: BuchiAutomizer took 5102.50 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 81.5 MB in the beginning and 78.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:53:00,947 INFO L168 Benchmark]: Witness Printer took 3.67 ms. Allocated memory is still 157.3 MB. Free memory was 78.7 MB in the beginning and 77.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:53:00,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory was 79.5 MB in the beginning and 79.4 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 476.81 ms. Allocated memory is still 107.0 MB. Free memory was 71.4 MB in the beginning and 78.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.45 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 76.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.45 ms. Allocated memory is still 107.0 MB. Free memory was 76.4 MB in the beginning and 74.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 813.11 ms. Allocated memory is still 107.0 MB. Free memory was 74.8 MB in the beginning and 81.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5102.50 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 81.5 MB in the beginning and 78.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.67 ms. Allocated memory is still 157.3 MB. Free memory was 78.7 MB in the beginning and 77.7 MB in the end (delta: 1.0 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 4 terminating modules (3 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i2 + 15 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 4.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 64 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 94 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 418 SDtfs, 237 SDslu, 930 SDs, 0 SdLazy, 36 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital145 mio100 ax100 hnf99 lsp34 ukn100 mio100 lsp100 div127 bol100 ite100 ukn100 eq178 hnf85 smp100 dnf100 smp100 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 103ms 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...