./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/reducercommutativity/avg.i --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_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/reducercommutativity/avg.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/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 a5f251cf9a8811b67928a183ef8f33171e035f3a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:41:17,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:41:17,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:41:17,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:41:17,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:41:17,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:41:17,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:41:17,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:41:17,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:41:17,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:41:17,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:41:17,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:41:17,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:41:17,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:41:17,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:41:17,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:41:17,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:41:17,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:41:17,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:41:17,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:41:17,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:41:17,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:41:17,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:41:17,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:41:17,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:41:17,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:41:17,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:41:17,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:41:17,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:41:17,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:41:17,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:41:17,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:41:17,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:41:17,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:41:17,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:41:17,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:41:17,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:41:17,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:41:17,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:41:17,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:41:17,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:41:17,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 22:41:18,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:41:18,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:41:18,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:41:18,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:41:18,037 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:41:18,037 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:41:18,037 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:41:18,037 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:41:18,037 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:41:18,038 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:41:18,038 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:41:18,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:41:18,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:41:18,038 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:41:18,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:41:18,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:41:18,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:41:18,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:41:18,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:41:18,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:41:18,040 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:41:18,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:41:18,040 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:41:18,040 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:41:18,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:41:18,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:41:18,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:41:18,041 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:41:18,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:41:18,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:41:18,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:41:18,042 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:41:18,043 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:41:18,043 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_a1d16080-858b-40bc-8a9f-7b96588f6c77/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5f251cf9a8811b67928a183ef8f33171e035f3a [2020-11-29 22:41:18,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:41:18,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:41:18,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:41:18,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:41:18,363 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:41:18,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/../../sv-benchmarks/c/reducercommutativity/avg.i [2020-11-29 22:41:18,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/data/e4df05aea/7afdafa375a74262b84647592d922140/FLAGf51f55d70 [2020-11-29 22:41:19,025 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:41:19,026 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/sv-benchmarks/c/reducercommutativity/avg.i [2020-11-29 22:41:19,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/data/e4df05aea/7afdafa375a74262b84647592d922140/FLAGf51f55d70 [2020-11-29 22:41:19,375 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/data/e4df05aea/7afdafa375a74262b84647592d922140 [2020-11-29 22:41:19,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:41:19,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:41:19,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:41:19,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:41:19,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:41:19,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57329a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19, skipping insertion in model container [2020-11-29 22:41:19,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:41:19,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:41:19,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:41:19,709 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:41:19,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:41:19,759 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:41:19,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19 WrapperNode [2020-11-29 22:41:19,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:41:19,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:41:19,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:41:19,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:41:19,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:41:19,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:41:19,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:41:19,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:41:19,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (1/1) ... [2020-11-29 22:41:19,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:41:19,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:41:19,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:41:19,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:41:19,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/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 22:41:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:41:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:41:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:41:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:41:19,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:41:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:41:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:41:20,552 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:41:20,552 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 22:41:20,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:41:20 BoogieIcfgContainer [2020-11-29 22:41:20,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:41:20,555 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:41:20,555 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:41:20,558 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:41:20,559 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:41:20,559 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:41:19" (1/3) ... [2020-11-29 22:41:20,560 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d5520fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:41:20, skipping insertion in model container [2020-11-29 22:41:20,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:41:20,560 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:19" (2/3) ... [2020-11-29 22:41:20,561 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d5520fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:41:20, skipping insertion in model container [2020-11-29 22:41:20,561 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:41:20,561 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:41:20" (3/3) ... [2020-11-29 22:41:20,562 INFO L373 chiAutomizerObserver]: Analyzing ICFG avg.i [2020-11-29 22:41:20,621 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:41:20,621 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:41:20,621 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:41:20,621 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:41:20,621 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:41:20,622 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:41:20,622 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:41:20,622 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:41:20,637 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2020-11-29 22:41:20,660 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2020-11-29 22:41:20,661 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:20,661 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:20,668 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 22:41:20,668 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:41:20,669 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:41:20,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2020-11-29 22:41:20,672 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2020-11-29 22:41:20,673 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:20,673 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:20,673 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 22:41:20,674 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:41:20,680 INFO L794 eck$LassoCheckResult]: Stem: 27#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(6);call write~init~int(97, #t~string1.base, #t~string1.offset, 1);call write~init~int(118, #t~string1.base, 1 + #t~string1.offset, 1);call write~init~int(103, #t~string1.base, 2 + #t~string1.offset, 1);call write~init~int(46, #t~string1.base, 3 + #t~string1.offset, 1);call write~init~int(99, #t~string1.base, 4 + #t~string1.offset, 1);call write~init~int(0, #t~string1.base, 5 + #t~string1.offset, 1);~N~0 := 0; 10#L-1true havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~1, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 25#L31true assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 8#L22-3true [2020-11-29 22:41:20,681 INFO L796 eck$LassoCheckResult]: Loop: 8#L22-3true assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 9#L22-2true avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 8#L22-3true [2020-11-29 22:41:20,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:20,689 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-11-29 22:41:20,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:20,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575202005] [2020-11-29 22:41:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:20,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:20,922 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:20,944 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:20,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:20,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1379, now seen corresponding path program 1 times [2020-11-29 22:41:20,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:20,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049212014] [2020-11-29 22:41:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:20,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:20,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:20,972 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 28693956, now seen corresponding path program 1 times [2020-11-29 22:41:20,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:20,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216144912] [2020-11-29 22:41:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:21,033 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:21,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:21,099 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:21,662 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-11-29 22:41:21,888 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-29 22:41:21,906 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:41:21,907 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:41:21,907 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:41:21,907 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:41:21,907 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:41:21,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:21,908 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:41:21,908 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:41:21,908 INFO L133 ssoRankerPreferences]: Filename of dumped script: avg.i_Iteration1_Lasso [2020-11-29 22:41:21,908 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:41:21,925 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:41:21,981 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 22:41:22,011 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 22:41:22,734 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-11-29 22:41:22,846 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 22:41:22,850 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 22:41:22,859 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 22:41:22,863 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 22:41:22,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:22,871 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 22:41:22,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:22,880 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 22:41:22,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:22,889 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 22:41:22,892 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 22:41:22,895 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 22:41:22,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:22,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:22,906 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 22:41:22,914 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 22:41:22,917 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 22:41:22,923 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 22:41:22,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:23,472 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:41:23,477 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/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 22:41:23,490 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 22:41:23,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:23,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:41:23,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:23,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:23,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:23,497 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:41:23,497 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:41:23,518 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/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 22:41:23,566 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 22:41:23,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:23,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:23,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:23,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:23,579 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:23,580 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:41:23,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/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 22:41:23,637 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 22:41:23,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:23,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:23,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:23,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:23,645 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:23,646 INFO L402 nArgumentSynthesizer]: A total of 2 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 22:41:23,650 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/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 22:41:23,685 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 22:41:23,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:23,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:23,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:23,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:23,690 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:23,691 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:41:23,694 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:23,719 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 22:41:23,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:23,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:23,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:23,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:23,724 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:23,724 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:41:23,728 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:23,761 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 22:41:23,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:23,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:23,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:23,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:23,765 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:23,765 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:41:23,769 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:23,806 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 22:41:23,807 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:23,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:23,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:23,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:23,810 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:23,810 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:41:23,813 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:23,841 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 22:41:23,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:23,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:23,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:23,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:23,846 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:23,847 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:41:23,851 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:41:23,902 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 22:41:23,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:23,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:23,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:23,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:23,906 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:23,906 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:23,916 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:23,943 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 22:41:23,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:23,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:23,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:23,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:23,946 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:23,947 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:41:23,953 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:41:24,002 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 22:41:24,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:24,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:24,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:24,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:24,007 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:24,007 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:24,012 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:41:24,057 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 22:41:24,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:24,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:24,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:24,060 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:24,069 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:24,070 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:24,079 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:24,115 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 22:41:24,117 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:24,117 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:24,117 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:24,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:24,121 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:24,121 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:41:24,125 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:41:24,151 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:24,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:24,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:24,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:24,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:24,165 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:24,165 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:41:24,185 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:41:24,318 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2020-11-29 22:41:24,318 INFO L444 ModelExtractionUtils]: 11 out of 31 variables were initially zero. Simplification set additionally 16 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:24,351 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:41:24,356 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 22:41:24,356 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:41:24,357 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_avg_~x.offset, v_rep(select #length ULTIMATE.start_avg_~x.base)_1, ULTIMATE.start_avg_~i~0) = -1*ULTIMATE.start_avg_~x.offset + 1*v_rep(select #length ULTIMATE.start_avg_~x.base)_1 - 4*ULTIMATE.start_avg_~i~0 Supporting invariants [] [2020-11-29 22:41:24,573 INFO L297 tatePredicateManager]: 38 out of 38 supporting invariants were superfluous and have been removed [2020-11-29 22:41:24,582 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 22:41:24,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:24,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:41:24,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:41:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:24,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:41:24,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:41:24,691 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 22:41:24,708 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 22:41:24,710 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states. Second operand 3 states. [2020-11-29 22:41:24,787 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states.. Second operand 3 states. Result 53 states and 73 transitions. Complement of second has 8 states. [2020-11-29 22:41:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:41:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:41:24,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2020-11-29 22:41:24,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 22:41:24,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:41:24,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 22:41:24,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:41:24,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-29 22:41:24,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:41:24,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 73 transitions. [2020-11-29 22:41:24,812 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2020-11-29 22:41:24,818 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 17 states and 23 transitions. [2020-11-29 22:41:24,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 22:41:24,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-29 22:41:24,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2020-11-29 22:41:24,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:41:24,825 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-11-29 22:41:24,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2020-11-29 22:41:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 22:41:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 22:41:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2020-11-29 22:41:24,859 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-11-29 22:41:24,859 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-11-29 22:41:24,859 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:41:24,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2020-11-29 22:41:24,862 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2020-11-29 22:41:24,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:24,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:24,863 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:41:24,863 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:41:24,864 INFO L794 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(6);call write~init~int(97, #t~string1.base, #t~string1.offset, 1);call write~init~int(118, #t~string1.base, 1 + #t~string1.offset, 1);call write~init~int(103, #t~string1.base, 2 + #t~string1.offset, 1);call write~init~int(46, #t~string1.base, 3 + #t~string1.offset, 1);call write~init~int(99, #t~string1.base, 4 + #t~string1.offset, 1);call write~init~int(0, #t~string1.base, 5 + #t~string1.offset, 1);~N~0 := 0; 285#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~1, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 286#L31 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 281#L22-3 assume !(avg_~i~0 < ~N~0); 277#L22-4 avg_#res := (if (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 <= 2147483647 then (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 else (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 - 4294967296); 278#L25 main_#t~ret6 := avg_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 274#L22-8 [2020-11-29 22:41:24,864 INFO L796 eck$LassoCheckResult]: Loop: 274#L22-8 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 273#L22-7 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 274#L22-8 [2020-11-29 22:41:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:24,865 INFO L82 PathProgramCache]: Analyzing trace with hash 889510859, now seen corresponding path program 1 times [2020-11-29 22:41:24,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:24,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912690810] [2020-11-29 22:41:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:24,889 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:41:24,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96856997] [2020-11-29 22:41:24,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:41:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:24,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:41:24,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:41:25,009 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 22:41:25,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912690810] [2020-11-29 22:41:25,010 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:41:25,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96856997] [2020-11-29 22:41:25,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:25,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:41:25,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875292078] [2020-11-29 22:41:25,014 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:41:25,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:25,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1891, now seen corresponding path program 1 times [2020-11-29 22:41:25,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:25,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692005954] [2020-11-29 22:41:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:25,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:25,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:25,028 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:25,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:25,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:41:25,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:41:25,125 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-11-29 22:41:25,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:25,287 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-11-29 22:41:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:41:25,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 21 transitions. [2020-11-29 22:41:25,289 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2020-11-29 22:41:25,289 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 21 transitions. [2020-11-29 22:41:25,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-29 22:41:25,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-29 22:41:25,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2020-11-29 22:41:25,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:41:25,290 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-29 22:41:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2020-11-29 22:41:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-29 22:41:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 22:41:25,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-11-29 22:41:25,292 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-29 22:41:25,292 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-29 22:41:25,292 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:41:25,293 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2020-11-29 22:41:25,293 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2020-11-29 22:41:25,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:25,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:25,294 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:25,294 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:41:25,294 INFO L794 eck$LassoCheckResult]: Stem: 343#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(6);call write~init~int(97, #t~string1.base, #t~string1.offset, 1);call write~init~int(118, #t~string1.base, 1 + #t~string1.offset, 1);call write~init~int(103, #t~string1.base, 2 + #t~string1.offset, 1);call write~init~int(46, #t~string1.base, 3 + #t~string1.offset, 1);call write~init~int(99, #t~string1.base, 4 + #t~string1.offset, 1);call write~init~int(0, #t~string1.base, 5 + #t~string1.offset, 1);~N~0 := 0; 341#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~1, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 342#L31 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 337#L22-3 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 338#L22-2 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 339#L22-3 assume !(avg_~i~0 < ~N~0); 333#L22-4 avg_#res := (if (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 <= 2147483647 then (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 else (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 - 4294967296); 334#L25 main_#t~ret6 := avg_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 330#L22-8 [2020-11-29 22:41:25,294 INFO L796 eck$LassoCheckResult]: Loop: 330#L22-8 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 329#L22-7 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 330#L22-8 [2020-11-29 22:41:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:25,295 INFO L82 PathProgramCache]: Analyzing trace with hash 123162473, now seen corresponding path program 1 times [2020-11-29 22:41:25,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:25,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995523410] [2020-11-29 22:41:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:25,307 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:41:25,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966908798] [2020-11-29 22:41:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:41:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:25,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:41:25,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:41:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:25,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995523410] [2020-11-29 22:41:25,405 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:41:25,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966908798] [2020-11-29 22:41:25,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:41:25,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 22:41:25,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34469079] [2020-11-29 22:41:25,406 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:41:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:25,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1891, now seen corresponding path program 2 times [2020-11-29 22:41:25,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:25,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890740065] [2020-11-29 22:41:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:25,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:25,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:25,430 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:25,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:25,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:41:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:41:25,470 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-29 22:41:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:25,568 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-11-29 22:41:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:41:25,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2020-11-29 22:41:25,570 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2020-11-29 22:41:25,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 23 transitions. [2020-11-29 22:41:25,571 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-29 22:41:25,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-29 22:41:25,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 23 transitions. [2020-11-29 22:41:25,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:41:25,571 INFO L691 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-29 22:41:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 23 transitions. [2020-11-29 22:41:25,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-11-29 22:41:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 22:41:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-11-29 22:41:25,573 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-29 22:41:25,573 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-29 22:41:25,573 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 22:41:25,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2020-11-29 22:41:25,574 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2020-11-29 22:41:25,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:25,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:25,575 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:25,575 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:41:25,575 INFO L794 eck$LassoCheckResult]: Stem: 410#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(6);call write~init~int(97, #t~string1.base, #t~string1.offset, 1);call write~init~int(118, #t~string1.base, 1 + #t~string1.offset, 1);call write~init~int(103, #t~string1.base, 2 + #t~string1.offset, 1);call write~init~int(46, #t~string1.base, 3 + #t~string1.offset, 1);call write~init~int(99, #t~string1.base, 4 + #t~string1.offset, 1);call write~init~int(0, #t~string1.base, 5 + #t~string1.offset, 1);~N~0 := 0; 408#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~1, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 409#L31 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 402#L22-3 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 403#L22-2 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 404#L22-3 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 405#L22-2 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 407#L22-3 assume !(avg_~i~0 < ~N~0); 398#L22-4 avg_#res := (if (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 <= 2147483647 then (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 else (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 - 4294967296); 399#L25 main_#t~ret6 := avg_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 395#L22-8 [2020-11-29 22:41:25,575 INFO L796 eck$LassoCheckResult]: Loop: 395#L22-8 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 394#L22-7 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 395#L22-8 [2020-11-29 22:41:25,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:25,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1898228857, now seen corresponding path program 2 times [2020-11-29 22:41:25,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:25,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127534864] [2020-11-29 22:41:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:25,593 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:41:25,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099457225] [2020-11-29 22:41:25,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:41:25,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:41:25,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-29 22:41:25,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:25,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:25,721 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:25,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:25,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1891, now seen corresponding path program 3 times [2020-11-29 22:41:25,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:25,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599763800] [2020-11-29 22:41:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:25,727 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:25,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:25,732 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:25,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:25,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1163170153, now seen corresponding path program 1 times [2020-11-29 22:41:25,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:25,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792840570] [2020-11-29 22:41:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:25,754 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:41:25,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421550634] [2020-11-29 22:41:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:41:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:25,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:25,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:25,924 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:27,801 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 196 DAG size of output: 171 [2020-11-29 22:41:30,581 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 159 DAG size of output: 141 [2020-11-29 22:41:30,584 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:41:30,584 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:41:30,584 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:41:30,584 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:41:30,584 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:41:30,584 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:30,585 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:41:30,585 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:41:30,585 INFO L133 ssoRankerPreferences]: Filename of dumped script: avg.i_Iteration4_Lasso [2020-11-29 22:41:30,585 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:41:30,585 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:41:30,594 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 22:41:30,616 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 22:41:30,633 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 22:41:30,636 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 22:41:30,639 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 22:41:30,643 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 22:41:31,941 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 29 [2020-11-29 22:41:34,692 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2020-11-29 22:41:34,857 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 22:41:34,859 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 22:41:34,862 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 22:41:34,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:34,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:34,884 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 22:41:34,886 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 22:41:34,889 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 22:41:34,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:34,894 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 22:41:34,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:34,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:34,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:41:34,905 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-29 22:43:05,531 WARN L193 SmtUtils]: Spent 1.51 m on a formula simplification. DAG size of input: 138 DAG size of output: 101 [2020-11-29 22:43:05,688 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2020-11-29 22:44:00,711 WARN L193 SmtUtils]: Spent 55.00 s on a formula simplification. DAG size of input: 112 DAG size of output: 93 [2020-11-29 22:44:00,936 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:44:00,943 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:44:00,950 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 22:44:00,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:44:00,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:44:00,952 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:44:00,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:44:00,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:44:00,952 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:44:00,952 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:44:00,954 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:44:00,983 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 22:44:00,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:44:00,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:44:00,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:44:00,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:44:00,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:44:00,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:44:00,985 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:44:00,986 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:44:01,010 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 22:44:01,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:44:01,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:44:01,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:44:01,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:44:01,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:44:01,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:44:01,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:44:01,013 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:44:01,036 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 22:44:01,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:44:01,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:44:01,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:44:01,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:44:01,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:44:01,038 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:44:01,038 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:44:01,039 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:44:01,061 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 22:44:01,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:44:01,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:44:01,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:44:01,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:44:01,064 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:44:01,064 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:44:01,067 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:44:01,097 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 22:44:01,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:44:01,099 INFO L203 nArgumentSynthesizer]: 6 stem disjuncts [2020-11-29 22:44:01,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:44:01,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:44:01,131 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-11-29 22:44:01,131 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:44:01,182 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:44:01,278 INFO L443 ModelExtractionUtils]: Simplification made 25 calls to the SMT solver. [2020-11-29 22:44:01,278 INFO L444 ModelExtractionUtils]: 14 out of 37 variables were initially zero. Simplification set additionally 20 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:44:01,281 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:44:01,283 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 22:44:01,283 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:44:01,283 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_avg_~i~0, ~N~0) = -1*ULTIMATE.start_avg_~i~0 + 1*~N~0 Supporting invariants [] [2020-11-29 22:44:02,046 INFO L297 tatePredicateManager]: 55 out of 55 supporting invariants were superfluous and have been removed [2020-11-29 22:44:02,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:44:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:44:02,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:44:02,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:44:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:44:02,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:44:02,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:44:02,136 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 22:44:02,137 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 22:44:02,137 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-29 22:44:02,684 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 26 states and 33 transitions. Complement of second has 7 states. [2020-11-29 22:44:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:44:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:44:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-29 22:44:02,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-29 22:44:02,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:44:02,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 2 letters. [2020-11-29 22:44:02,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:44:02,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-29 22:44:02,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:44:02,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 33 transitions. [2020-11-29 22:44:02,688 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 22:44:02,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 20 states and 24 transitions. [2020-11-29 22:44:02,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 22:44:02,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 22:44:02,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2020-11-29 22:44:02,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:44:02,690 INFO L691 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-11-29 22:44:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2020-11-29 22:44:02,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 22:44:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 22:44:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-11-29 22:44:02,692 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-11-29 22:44:02,692 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-11-29 22:44:02,692 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 22:44:02,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 24 transitions. [2020-11-29 22:44:02,693 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 22:44:02,693 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:44:02,693 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:44:02,694 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:44:02,694 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:44:02,694 INFO L794 eck$LassoCheckResult]: Stem: 735#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(6);call write~init~int(97, #t~string1.base, #t~string1.offset, 1);call write~init~int(118, #t~string1.base, 1 + #t~string1.offset, 1);call write~init~int(103, #t~string1.base, 2 + #t~string1.offset, 1);call write~init~int(46, #t~string1.base, 3 + #t~string1.offset, 1);call write~init~int(99, #t~string1.base, 4 + #t~string1.offset, 1);call write~init~int(0, #t~string1.base, 5 + #t~string1.offset, 1);~N~0 := 0; 733#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~1, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 734#L31 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 727#L22-3 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 728#L22-2 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 729#L22-3 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 730#L22-2 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 732#L22-3 assume !(avg_~i~0 < ~N~0); 723#L22-4 avg_#res := (if (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 <= 2147483647 then (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 else (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 - 4294967296); 724#L25 main_#t~ret6 := avg_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 738#L22-8 assume !(avg_~i~0 < ~N~0); 736#L22-9 avg_#res := (if (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 <= 2147483647 then (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 else (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 - 4294967296); 737#L25-1 main_#t~ret9 := avg_#res;main_~ret2~0 := main_#t~ret9;havoc main_#t~ret9;call main_#t~mem10 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem10;havoc main_#t~mem10;main_~i~1 := 0; 725#L43-3 [2020-11-29 22:44:02,695 INFO L796 eck$LassoCheckResult]: Loop: 725#L43-3 assume !!(main_~i~1 < ~N~0 - 1);call main_#t~mem12 := read~int(main_~#x~0.base, main_~#x~0.offset + 4 * (1 + main_~i~1), 4);call write~int(main_#t~mem12, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~mem12; 726#L43-2 main_#t~post11 := main_~i~1;main_~i~1 := 1 + main_#t~post11;havoc main_#t~post11; 725#L43-3 [2020-11-29 22:44:02,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:44:02,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1698534614, now seen corresponding path program 1 times [2020-11-29 22:44:02,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:44:02,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71251248] [2020-11-29 22:44:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:44:02,709 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:44:02,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069102653] [2020-11-29 22:44:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:44:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:44:02,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:44:02,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:44:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 22:44:02,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71251248] [2020-11-29 22:44:02,797 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:44:02,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069102653] [2020-11-29 22:44:02,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:44:02,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:44:02,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730153150] [2020-11-29 22:44:02,798 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:44:02,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:44:02,798 INFO L82 PathProgramCache]: Analyzing trace with hash 2403, now seen corresponding path program 1 times [2020-11-29 22:44:02,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:44:02,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536453351] [2020-11-29 22:44:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:44:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:44:02,813 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:44:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:44:02,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:44:02,826 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:44:02,957 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-11-29 22:44:03,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:44:03,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:44:03,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:44:03,006 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-11-29 22:44:03,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:44:03,127 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-29 22:44:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:44:03,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 26 transitions. [2020-11-29 22:44:03,129 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 22:44:03,129 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 26 transitions. [2020-11-29 22:44:03,129 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-29 22:44:03,129 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-29 22:44:03,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 26 transitions. [2020-11-29 22:44:03,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:44:03,130 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-29 22:44:03,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 26 transitions. [2020-11-29 22:44:03,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-29 22:44:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 22:44:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-29 22:44:03,132 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-29 22:44:03,132 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-29 22:44:03,133 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 22:44:03,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 23 transitions. [2020-11-29 22:44:03,133 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 22:44:03,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:44:03,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:44:03,134 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:44:03,134 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:44:03,135 INFO L794 eck$LassoCheckResult]: Stem: 821#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(6);call write~init~int(97, #t~string1.base, #t~string1.offset, 1);call write~init~int(118, #t~string1.base, 1 + #t~string1.offset, 1);call write~init~int(103, #t~string1.base, 2 + #t~string1.offset, 1);call write~init~int(46, #t~string1.base, 3 + #t~string1.offset, 1);call write~init~int(99, #t~string1.base, 4 + #t~string1.offset, 1);call write~init~int(0, #t~string1.base, 5 + #t~string1.offset, 1);~N~0 := 0; 819#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~1, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 820#L31 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 813#L22-3 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 814#L22-2 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 815#L22-3 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 816#L22-2 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 818#L22-3 assume !(avg_~i~0 < ~N~0); 809#L22-4 avg_#res := (if (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 <= 2147483647 then (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 else (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 - 4294967296); 810#L25 main_#t~ret6 := avg_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 824#L22-8 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 805#L22-7 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 806#L22-8 assume !(avg_~i~0 < ~N~0); 822#L22-9 avg_#res := (if (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 <= 2147483647 then (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 else (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 - 4294967296); 823#L25-1 main_#t~ret9 := avg_#res;main_~ret2~0 := main_#t~ret9;havoc main_#t~ret9;call main_#t~mem10 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem10;havoc main_#t~mem10;main_~i~1 := 0; 811#L43-3 [2020-11-29 22:44:03,135 INFO L796 eck$LassoCheckResult]: Loop: 811#L43-3 assume !!(main_~i~1 < ~N~0 - 1);call main_#t~mem12 := read~int(main_~#x~0.base, main_~#x~0.offset + 4 * (1 + main_~i~1), 4);call write~int(main_#t~mem12, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~mem12; 812#L43-2 main_#t~post11 := main_~i~1;main_~i~1 := 1 + main_#t~post11;havoc main_#t~post11; 811#L43-3 [2020-11-29 22:44:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:44:03,135 INFO L82 PathProgramCache]: Analyzing trace with hash 205910964, now seen corresponding path program 1 times [2020-11-29 22:44:03,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:44:03,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310046830] [2020-11-29 22:44:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:44:03,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:44:03,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363991505] [2020-11-29 22:44:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:44:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:44:03,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:44:03,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:44:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 22:44:03,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310046830] [2020-11-29 22:44:03,265 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:44:03,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363991505] [2020-11-29 22:44:03,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:44:03,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 22:44:03,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659670557] [2020-11-29 22:44:03,266 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:44:03,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:44:03,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2403, now seen corresponding path program 2 times [2020-11-29 22:44:03,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:44:03,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024420444] [2020-11-29 22:44:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:44:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:44:03,271 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:44:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:44:03,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:44:03,286 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:44:03,407 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-11-29 22:44:03,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:44:03,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:44:03,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:44:03,469 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. cyclomatic complexity: 7 Second operand 5 states. [2020-11-29 22:44:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:44:04,117 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-29 22:44:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:44:04,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 31 transitions. [2020-11-29 22:44:04,119 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 22:44:04,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 31 transitions. [2020-11-29 22:44:04,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-11-29 22:44:04,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-11-29 22:44:04,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 31 transitions. [2020-11-29 22:44:04,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:44:04,120 INFO L691 BuchiCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-11-29 22:44:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 31 transitions. [2020-11-29 22:44:04,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2020-11-29 22:44:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 22:44:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-29 22:44:04,123 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-29 22:44:04,123 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-29 22:44:04,123 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 22:44:04,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 25 transitions. [2020-11-29 22:44:04,124 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 22:44:04,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:44:04,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:44:04,125 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:44:04,125 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:44:04,125 INFO L794 eck$LassoCheckResult]: Stem: 919#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(6);call write~init~int(97, #t~string1.base, #t~string1.offset, 1);call write~init~int(118, #t~string1.base, 1 + #t~string1.offset, 1);call write~init~int(103, #t~string1.base, 2 + #t~string1.offset, 1);call write~init~int(46, #t~string1.base, 3 + #t~string1.offset, 1);call write~init~int(99, #t~string1.base, 4 + #t~string1.offset, 1);call write~init~int(0, #t~string1.base, 5 + #t~string1.offset, 1);~N~0 := 0; 917#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_#t~mem7, main_#t~mem8, main_#t~ret9, main_#t~mem10, main_#t~mem12, main_#t~post11, main_~i~1, main_#t~ret13, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 918#L31 assume ~N~0 > 1;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(4 * ~N~0);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 911#L22-3 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 912#L22-2 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 913#L22-3 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 914#L22-2 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 916#L22-3 assume !(avg_~i~0 < ~N~0); 907#L22-4 avg_#res := (if (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 <= 2147483647 then (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 else (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 - 4294967296); 908#L25 main_#t~ret6 := avg_#res;main_~ret~1 := main_#t~ret6;havoc main_#t~ret6;call main_#t~mem7 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem7;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem8, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem8;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);avg_#in~x.base, avg_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc avg_#res;havoc avg_#t~mem4, avg_#t~post3, avg_~x.base, avg_~x.offset, avg_~i~0, avg_~ret~0;avg_~x.base, avg_~x.offset := avg_#in~x.base, avg_#in~x.offset;havoc avg_~i~0;havoc avg_~ret~0;avg_~ret~0 := 0;avg_~i~0 := 0; 922#L22-8 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 903#L22-7 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 904#L22-8 assume !!(avg_~i~0 < ~N~0);call avg_#t~mem4 := read~int(avg_~x.base, avg_~x.offset + 4 * avg_~i~0, 4);avg_~ret~0 := avg_~ret~0 + avg_#t~mem4;havoc avg_#t~mem4; 923#L22-7 avg_#t~post3 := avg_~i~0;avg_~i~0 := 1 + avg_#t~post3;havoc avg_#t~post3; 924#L22-8 assume !(avg_~i~0 < ~N~0); 920#L22-9 avg_#res := (if (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 <= 2147483647 then (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 else (if avg_~ret~0 < 0 && 0 != avg_~ret~0 % ~N~0 then (if ~N~0 < 0 then avg_~ret~0 / ~N~0 - 1 else 1 + avg_~ret~0 / ~N~0) else avg_~ret~0 / ~N~0) % 4294967296 - 4294967296); 921#L25-1 main_#t~ret9 := avg_#res;main_~ret2~0 := main_#t~ret9;havoc main_#t~ret9;call main_#t~mem10 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem10;havoc main_#t~mem10;main_~i~1 := 0; 909#L43-3 [2020-11-29 22:44:04,125 INFO L796 eck$LassoCheckResult]: Loop: 909#L43-3 assume !!(main_~i~1 < ~N~0 - 1);call main_#t~mem12 := read~int(main_~#x~0.base, main_~#x~0.offset + 4 * (1 + main_~i~1), 4);call write~int(main_#t~mem12, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~mem12; 910#L43-2 main_#t~post11 := main_~i~1;main_~i~1 := 1 + main_#t~post11;havoc main_#t~post11; 909#L43-3 [2020-11-29 22:44:04,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:44:04,126 INFO L82 PathProgramCache]: Analyzing trace with hash 313660178, now seen corresponding path program 2 times [2020-11-29 22:44:04,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:44:04,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396233519] [2020-11-29 22:44:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:44:04,137 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:44:04,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733691328] [2020-11-29 22:44:04,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:44:04,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:44:04,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-29 22:44:04,386 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:44:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:44:04,417 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:44:04,433 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:44:04,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:44:04,434 INFO L82 PathProgramCache]: Analyzing trace with hash 2403, now seen corresponding path program 3 times [2020-11-29 22:44:04,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:44:04,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777997884] [2020-11-29 22:44:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:44:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:44:04,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:44:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:44:04,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:44:04,445 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:44:04,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:44:04,445 INFO L82 PathProgramCache]: Analyzing trace with hash 779721780, now seen corresponding path program 1 times [2020-11-29 22:44:04,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:44:04,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755529742] [2020-11-29 22:44:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:44:04,454 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:44:04,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857283851] [2020-11-29 22:44:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1d16080-858b-40bc-8a9f-7b96588f6c77/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:44:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:44:04,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:44:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:44:04,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:44:04,769 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:44:04,913 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-11-29 22:44:21,205 WARN L193 SmtUtils]: Spent 16.21 s on a formula simplification. DAG size of input: 256 DAG size of output: 220 [2020-11-29 22:44:21,226 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:44:21,243 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 22:44:21,256 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 22:44:21,265 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,270 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,275 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,308 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,347 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,355 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,367 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,378 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,405 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 22:44:21,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,413 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,421 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,457 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,471 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,476 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,485 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,498 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,504 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,523 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 22:44:21,525 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 22:44:21,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,531 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,536 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,546 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,549 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,561 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,563 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,566 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,577 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,580 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,591 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 22:44:21,594 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,596 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,611 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,627 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,632 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:44:21,661 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 22:44:21,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-11-29 22:49:52,249 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) stderr output: (error "out of memory") [2020-11-29 22:49:52,250 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:164) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:134) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition(TransFormulaUtils.java:255) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.SequentialComposition.getInterproceduralTransFormula(SequentialComposition.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.SequentialComposition.getInterproceduralTransFormula(SequentialComposition.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.computeTF(LassoCheck.java:362) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.computeStemTF(LassoCheck.java:326) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:864) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:382) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 35 more [2020-11-29 22:49:52,254 INFO L168 Benchmark]: Toolchain (without parser) took 512874.07 ms. Allocated memory was 100.7 MB in the beginning and 413.1 MB in the end (delta: 312.5 MB). Free memory was 64.1 MB in the beginning and 321.1 MB in the end (delta: -257.0 MB). Peak memory consumption was 245.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:52,256 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory is still 80.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:49:52,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.41 ms. Allocated memory is still 100.7 MB. Free memory was 63.9 MB in the beginning and 54.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:52,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.38 ms. Allocated memory is still 100.7 MB. Free memory was 53.9 MB in the beginning and 52.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:52,258 INFO L168 Benchmark]: Boogie Preprocessor took 55.98 ms. Allocated memory is still 100.7 MB. Free memory was 52.1 MB in the beginning and 50.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:52,259 INFO L168 Benchmark]: RCFGBuilder took 681.71 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 50.5 MB in the beginning and 89.1 MB in the end (delta: -38.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:52,259 INFO L168 Benchmark]: BuchiAutomizer took 511697.48 ms. Allocated memory was 123.7 MB in the beginning and 413.1 MB in the end (delta: 289.4 MB). Free memory was 89.1 MB in the beginning and 321.1 MB in the end (delta: -231.9 MB). Peak memory consumption was 245.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:52,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory is still 80.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.41 ms. Allocated memory is still 100.7 MB. Free memory was 63.9 MB in the beginning and 54.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.38 ms. Allocated memory is still 100.7 MB. Free memory was 53.9 MB in the beginning and 52.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.98 ms. Allocated memory is still 100.7 MB. Free memory was 52.1 MB in the beginning and 50.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 681.71 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 50.5 MB in the beginning and 89.1 MB in the end (delta: -38.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 511697.48 ms. Allocated memory was 123.7 MB in the beginning and 413.1 MB in the end (delta: 289.4 MB). Free memory was 89.1 MB in the beginning and 321.1 MB in the end (delta: -231.9 MB). Peak memory consumption was 245.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...