./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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 58eecb02814a6b78cadd872f0ade36a8b32c0833 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:58:09,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:09,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:09,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:09,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:09,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:09,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:09,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:09,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:09,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:09,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:09,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:09,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:09,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:09,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:09,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:09,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:09,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:09,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:09,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:09,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:09,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:09,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:09,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:09,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:09,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:09,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:09,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:09,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:09,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:09,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:09,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:09,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:09,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:09,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:09,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:09,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:09,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:09,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:09,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:09,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:09,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 02:58:09,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:09,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:09,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:09,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:09,383 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:09,384 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:58:09,384 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:58:09,384 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:58:09,384 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:58:09,384 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:58:09,385 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:58:09,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:09,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:09,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:58:09,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:09,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:09,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:09,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:58:09,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:58:09,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:58:09,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:09,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:09,388 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:58:09,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:09,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:58:09,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:09,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:09,389 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:58:09,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:09,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:09,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:09,392 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:58:09,393 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:58:09,393 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_66d37257-3e52-4902-b7ec-0d9c9573da4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58eecb02814a6b78cadd872f0ade36a8b32c0833 [2020-11-28 02:58:09,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:09,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:09,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:09,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:09,756 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:09,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c [2020-11-28 02:58:09,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/data/ff79af39c/99bdd1620bfe4d2e8c6943f448891c9b/FLAG87ab05921 [2020-11-28 02:58:10,388 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:10,389 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c [2020-11-28 02:58:10,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/data/ff79af39c/99bdd1620bfe4d2e8c6943f448891c9b/FLAG87ab05921 [2020-11-28 02:58:10,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/data/ff79af39c/99bdd1620bfe4d2e8c6943f448891c9b [2020-11-28 02:58:10,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:10,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:10,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:10,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:10,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:10,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:10" (1/1) ... [2020-11-28 02:58:10,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493b74ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:10, skipping insertion in model container [2020-11-28 02:58:10,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:10" (1/1) ... [2020-11-28 02:58:10,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:10,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:10,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:10,981 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:11,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:11,014 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:11,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11 WrapperNode [2020-11-28 02:58:11,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:11,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:11,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:11,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:11,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (1/1) ... [2020-11-28 02:58:11,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (1/1) ... [2020-11-28 02:58:11,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:11,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:11,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:11,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:11,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (1/1) ... [2020-11-28 02:58:11,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (1/1) ... [2020-11-28 02:58:11,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (1/1) ... [2020-11-28 02:58:11,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (1/1) ... [2020-11-28 02:58:11,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (1/1) ... [2020-11-28 02:58:11,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (1/1) ... [2020-11-28 02:58:11,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (1/1) ... [2020-11-28 02:58:11,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:11,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:11,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:11,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:11,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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 [2020-11-28 02:58:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:58:11,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:58:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:11,595 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:11,595 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 02:58:11,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:11 BoogieIcfgContainer [2020-11-28 02:58:11,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:11,598 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:58:11,598 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:58:11,602 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:58:11,603 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:58:11,603 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:58:10" (1/3) ... [2020-11-28 02:58:11,604 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68032065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:11, skipping insertion in model container [2020-11-28 02:58:11,605 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:58:11,605 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:11" (2/3) ... [2020-11-28 02:58:11,605 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68032065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:11, skipping insertion in model container [2020-11-28 02:58:11,605 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:58:11,606 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:11" (3/3) ... [2020-11-28 02:58:11,608 INFO L373 chiAutomizerObserver]: Analyzing ICFG verisec_sendmail_tTflag_arr_one_loop.c [2020-11-28 02:58:11,669 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:58:11,669 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:58:11,669 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:58:11,669 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:11,670 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:11,670 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:58:11,670 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:11,670 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:58:11,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-11-28 02:58:11,707 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-11-28 02:58:11,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:11,707 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:11,713 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 02:58:11,713 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:58:11,714 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:58:11,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-11-28 02:58:11,718 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-11-28 02:58:11,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:11,718 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:11,718 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 02:58:11,719 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:58:11,726 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#L-1true havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 7#L21-3true [2020-11-28 02:58:11,727 INFO L796 eck$LassoCheckResult]: Loop: 7#L21-3true assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 9#L21-2true main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 7#L21-3true [2020-11-28 02:58:11,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:11,736 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-11-28 02:58:11,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:11,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064364631] [2020-11-28 02:58:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:11,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:11,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:11,889 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:11,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2020-11-28 02:58:11,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:11,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831728916] [2020-11-28 02:58:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:11,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:11,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:11,910 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:11,912 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-11-28 02:58:11,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:11,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865434122] [2020-11-28 02:58:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:11,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:11,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:11,965 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:12,551 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-11-28 02:58:12,703 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-11-28 02:58:12,746 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:58:12,746 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:58:12,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:58:12,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:58:12,747 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:58:12,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:12,747 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:58:12,747 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:58:12,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: verisec_sendmail_tTflag_arr_one_loop.c_Iteration1_Lasso [2020-11-28 02:58:12,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:58:12,748 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:58:12,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:12,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:13,129 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-11-28 02:58:13,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:13,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:13,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:13,639 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:58:13,643 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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) [2020-11-28 02:58:13,663 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 [2020-11-28 02:58:13,666 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:13,666 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:13,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:13,667 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:13,667 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:13,669 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:13,669 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:13,675 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:13,717 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 [2020-11-28 02:58:13,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:13,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:13,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:13,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:13,725 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:13,725 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:13,730 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:13,771 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 [2020-11-28 02:58:13,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:13,774 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:13,774 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:13,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:13,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:13,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:13,776 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:58:13,777 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:13,823 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 [2020-11-28 02:58:13,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:13,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:13,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:13,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:13,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:13,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:13,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:13,842 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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) [2020-11-28 02:58:13,890 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 [2020-11-28 02:58:13,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:13,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:13,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:13,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:13,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:13,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:13,895 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:13,897 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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 [2020-11-28 02:58:13,931 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 [2020-11-28 02:58:13,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:13,933 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:13,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:13,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:13,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:13,934 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:13,934 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:58:13,942 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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) [2020-11-28 02:58:13,988 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 [2020-11-28 02:58:13,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:13,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:13,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:13,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:13,995 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:13,995 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:58:13,999 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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 [2020-11-28 02:58:14,026 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 [2020-11-28 02:58:14,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:14,028 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:14,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:14,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:14,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:14,029 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:14,029 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:58:14,037 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:14,064 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 [2020-11-28 02:58:14,066 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:14,066 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:14,066 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:14,066 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:14,066 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:14,067 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:14,067 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:58:14,073 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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 [2020-11-28 02:58:14,100 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 [2020-11-28 02:58:14,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:14,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:14,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:14,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:14,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:14,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:14,102 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:58:14,113 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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) [2020-11-28 02:58:14,155 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 [2020-11-28 02:58:14,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:14,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:14,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:14,157 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:14,157 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:14,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:14,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:58:14,160 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:14,197 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 [2020-11-28 02:58:14,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:14,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:14,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:14,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:14,202 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:14,202 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:58:14,208 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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 [2020-11-28 02:58:14,236 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 [2020-11-28 02:58:14,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:14,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:14,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:14,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:14,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:14,239 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:14,239 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:58:14,241 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:14,266 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 [2020-11-28 02:58:14,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:14,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:14,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:14,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:14,271 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:14,271 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:58:14,286 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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 [2020-11-28 02:58:14,310 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 [2020-11-28 02:58:14,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:14,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:14,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:14,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:14,318 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:14,319 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:58:14,340 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:14,392 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 [2020-11-28 02:58:14,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:14,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:14,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:14,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:14,397 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:14,397 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:14,404 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:14,446 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 [2020-11-28 02:58:14,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:14,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:14,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:14,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:14,463 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:14,463 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:14,476 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:58:14,595 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2020-11-28 02:58:14,595 INFO L444 ModelExtractionUtils]: 1 out of 16 variables were initially zero. Simplification set additionally 12 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:14,603 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:14,613 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:58:14,613 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:58:14,614 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#in~0.base)_1, ULTIMATE.start_main_~i~0) = 21*v_rep(select #length ULTIMATE.start_main_~#in~0.base)_1 - 2*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-28 02:58:14,691 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2020-11-28 02:58:14,698 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 02:58:14,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:14,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:58:14,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:14,773 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:58:14,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:14,833 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 [2020-11-28 02:58:14,834 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 3 states. [2020-11-28 02:58:14,890 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 3 states. Result 27 states and 37 transitions. Complement of second has 8 states. [2020-11-28 02:58:14,893 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 [2020-11-28 02:58:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:58:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-11-28 02:58:14,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-28 02:58:14,897 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:58:14,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 02:58:14,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:58:14,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-28 02:58:14,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:58:14,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 37 transitions. [2020-11-28 02:58:14,906 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:14,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 7 states and 9 transitions. [2020-11-28 02:58:14,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 02:58:14,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-28 02:58:14,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2020-11-28 02:58:14,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:14,912 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-28 02:58:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2020-11-28 02:58:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-28 02:58:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 02:58:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-28 02:58:14,937 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-28 02:58:14,937 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-28 02:58:14,937 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:58:14,937 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-28 02:58:14,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:14,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:14,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:14,939 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:58:14,939 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:14,940 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 125#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 126#L21-3 assume !(main_~i~0 < 11); 129#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 127#L28-2 [2020-11-28 02:58:14,941 INFO L796 eck$LassoCheckResult]: Loop: 127#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 127#L28-2 [2020-11-28 02:58:14,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:14,941 INFO L82 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2020-11-28 02:58:14,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:14,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000763292] [2020-11-28 02:58:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:15,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000763292] [2020-11-28 02:58:15,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:15,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:15,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329124829] [2020-11-28 02:58:15,019 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:15,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:15,021 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2020-11-28 02:58:15,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:15,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925857778] [2020-11-28 02:58:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:15,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:15,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:15,081 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:15,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:15,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:58:15,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:15,239 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-28 02:58:15,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:15,266 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-11-28 02:58:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:58:15,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2020-11-28 02:58:15,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:15,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2020-11-28 02:58:15,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 02:58:15,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-28 02:58:15,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2020-11-28 02:58:15,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:15,269 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-28 02:58:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2020-11-28 02:58:15,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2020-11-28 02:58:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 02:58:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2020-11-28 02:58:15,271 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-11-28 02:58:15,271 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-11-28 02:58:15,271 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 02:58:15,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2020-11-28 02:58:15,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:15,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:15,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:15,272 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:58:15,272 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:15,272 INFO L794 eck$LassoCheckResult]: Stem: 150#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 147#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 148#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 152#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 153#L21-3 assume !(main_~i~0 < 11); 151#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 149#L28-2 [2020-11-28 02:58:15,272 INFO L796 eck$LassoCheckResult]: Loop: 149#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 149#L28-2 [2020-11-28 02:58:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:15,273 INFO L82 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2020-11-28 02:58:15,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:15,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313666731] [2020-11-28 02:58:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:15,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313666731] [2020-11-28 02:58:15,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391717318] [2020-11-28 02:58:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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 [2020-11-28 02:58:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:15,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:58:15,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:15,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:15,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-28 02:58:15,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726136864] [2020-11-28 02:58:15,462 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:15,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:15,463 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 2 times [2020-11-28 02:58:15,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:15,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547311256] [2020-11-28 02:58:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:15,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:15,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:15,501 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:15,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:15,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:15,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:15,615 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 5 states. [2020-11-28 02:58:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:15,642 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-11-28 02:58:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:15,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2020-11-28 02:58:15,646 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:15,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2020-11-28 02:58:15,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 02:58:15,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-28 02:58:15,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2020-11-28 02:58:15,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:15,647 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-28 02:58:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2020-11-28 02:58:15,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2020-11-28 02:58:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 02:58:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-11-28 02:58:15,648 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-28 02:58:15,649 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-28 02:58:15,649 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 02:58:15,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2020-11-28 02:58:15,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:15,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:15,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:15,650 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2020-11-28 02:58:15,650 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:15,650 INFO L794 eck$LassoCheckResult]: Stem: 191#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 188#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 189#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 193#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 194#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 195#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 196#L21-3 assume !(main_~i~0 < 11); 192#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 190#L28-2 [2020-11-28 02:58:15,650 INFO L796 eck$LassoCheckResult]: Loop: 190#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 190#L28-2 [2020-11-28 02:58:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:15,651 INFO L82 PathProgramCache]: Analyzing trace with hash 265236367, now seen corresponding path program 2 times [2020-11-28 02:58:15,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:15,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657119189] [2020-11-28 02:58:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:15,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657119189] [2020-11-28 02:58:15,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106481524] [2020-11-28 02:58:15,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:15,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:58:15,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:15,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:58:15,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:15,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:15,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 02:58:15,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811158727] [2020-11-28 02:58:15,799 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:15,799 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 3 times [2020-11-28 02:58:15,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:15,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716953733] [2020-11-28 02:58:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:15,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:15,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:15,829 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:15,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:15,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:15,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:15,931 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 6 states. [2020-11-28 02:58:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:15,973 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-11-28 02:58:15,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:15,974 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2020-11-28 02:58:15,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:15,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2020-11-28 02:58:15,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 02:58:15,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-28 02:58:15,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2020-11-28 02:58:15,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:15,976 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-28 02:58:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2020-11-28 02:58:15,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2020-11-28 02:58:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 02:58:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-28 02:58:15,977 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-28 02:58:15,977 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-28 02:58:15,977 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 02:58:15,978 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2020-11-28 02:58:15,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:15,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:15,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:15,979 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1] [2020-11-28 02:58:15,979 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:15,979 INFO L794 eck$LassoCheckResult]: Stem: 243#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 240#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 241#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 245#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 246#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 247#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 248#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 250#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 249#L21-3 assume !(main_~i~0 < 11); 244#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 242#L28-2 [2020-11-28 02:58:15,979 INFO L796 eck$LassoCheckResult]: Loop: 242#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 242#L28-2 [2020-11-28 02:58:15,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:15,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1489134225, now seen corresponding path program 3 times [2020-11-28 02:58:15,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:15,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76629990] [2020-11-28 02:58:15,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:16,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76629990] [2020-11-28 02:58:16,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943604336] [2020-11-28 02:58:16,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:16,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-28 02:58:16,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:16,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:58:16,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:16,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:16,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 02:58:16,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796207876] [2020-11-28 02:58:16,187 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:16,187 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 4 times [2020-11-28 02:58:16,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:16,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828876425] [2020-11-28 02:58:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:16,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:16,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:16,221 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:16,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:16,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:16,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:16,323 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 3 Second operand 7 states. [2020-11-28 02:58:16,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:16,380 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-28 02:58:16,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:16,380 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 16 transitions. [2020-11-28 02:58:16,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:16,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 16 transitions. [2020-11-28 02:58:16,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 02:58:16,383 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-28 02:58:16,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 16 transitions. [2020-11-28 02:58:16,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:16,383 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-28 02:58:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 16 transitions. [2020-11-28 02:58:16,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-11-28 02:58:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 02:58:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-11-28 02:58:16,385 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-28 02:58:16,385 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-28 02:58:16,385 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 02:58:16,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2020-11-28 02:58:16,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:16,386 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:16,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:16,387 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2020-11-28 02:58:16,387 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:16,387 INFO L794 eck$LassoCheckResult]: Stem: 306#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 303#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 304#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 308#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 309#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 310#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 315#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 314#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 313#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 312#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 311#L21-3 assume !(main_~i~0 < 11); 307#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 305#L28-2 [2020-11-28 02:58:16,387 INFO L796 eck$LassoCheckResult]: Loop: 305#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 305#L28-2 [2020-11-28 02:58:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:16,390 INFO L82 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 4 times [2020-11-28 02:58:16,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:16,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674063884] [2020-11-28 02:58:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:16,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674063884] [2020-11-28 02:58:16,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252111296] [2020-11-28 02:58:16,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:16,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 02:58:16,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:16,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:58:16,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:16,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:16,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-28 02:58:16,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80154633] [2020-11-28 02:58:16,575 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:16,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:16,575 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 5 times [2020-11-28 02:58:16,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:16,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728428762] [2020-11-28 02:58:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:16,592 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:16,603 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:16,606 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:16,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:16,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:58:16,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:16,704 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. cyclomatic complexity: 3 Second operand 8 states. [2020-11-28 02:58:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:16,752 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-11-28 02:58:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:16,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 18 transitions. [2020-11-28 02:58:16,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:16,756 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 02:58:16,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 02:58:16,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-28 02:58:16,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2020-11-28 02:58:16,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:16,757 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 02:58:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2020-11-28 02:58:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-11-28 02:58:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 02:58:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-28 02:58:16,759 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-28 02:58:16,759 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-28 02:58:16,759 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-28 02:58:16,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2020-11-28 02:58:16,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:16,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:16,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:16,762 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1] [2020-11-28 02:58:16,762 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:16,764 INFO L794 eck$LassoCheckResult]: Stem: 380#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 377#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 378#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 382#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 383#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 384#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 391#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 390#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 389#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 388#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 387#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 386#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 385#L21-3 assume !(main_~i~0 < 11); 381#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 379#L28-2 [2020-11-28 02:58:16,764 INFO L796 eck$LassoCheckResult]: Loop: 379#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 379#L28-2 [2020-11-28 02:58:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:16,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1745699051, now seen corresponding path program 5 times [2020-11-28 02:58:16,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:16,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113329255] [2020-11-28 02:58:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:16,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113329255] [2020-11-28 02:58:16,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475771628] [2020-11-28 02:58:16,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:16,903 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-28 02:58:16,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:16,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:58:16,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:16,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:16,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-28 02:58:16,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273305889] [2020-11-28 02:58:16,938 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 6 times [2020-11-28 02:58:16,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:16,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807625504] [2020-11-28 02:58:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:16,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:16,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:16,964 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:17,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:17,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:58:17,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:17,059 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 3 Second operand 9 states. [2020-11-28 02:58:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:17,113 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-28 02:58:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:17,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2020-11-28 02:58:17,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:17,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 20 transitions. [2020-11-28 02:58:17,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 02:58:17,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-28 02:58:17,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 20 transitions. [2020-11-28 02:58:17,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:17,116 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-28 02:58:17,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 20 transitions. [2020-11-28 02:58:17,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-11-28 02:58:17,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 02:58:17,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 02:58:17,118 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 02:58:17,118 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 02:58:17,118 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-28 02:58:17,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 18 transitions. [2020-11-28 02:58:17,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:17,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:17,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:17,119 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 1, 1, 1, 1] [2020-11-28 02:58:17,120 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:17,120 INFO L794 eck$LassoCheckResult]: Stem: 465#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 462#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 463#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 467#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 468#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 469#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 478#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 477#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 476#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 475#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 474#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 473#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 472#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 471#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 470#L21-3 assume !(main_~i~0 < 11); 466#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 464#L28-2 [2020-11-28 02:58:17,120 INFO L796 eck$LassoCheckResult]: Loop: 464#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 464#L28-2 [2020-11-28 02:58:17,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:17,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1715480727, now seen corresponding path program 6 times [2020-11-28 02:58:17,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:17,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485079687] [2020-11-28 02:58:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:17,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485079687] [2020-11-28 02:58:17,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044924920] [2020-11-28 02:58:17,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:17,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-28 02:58:17,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:17,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:58:17,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:17,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:17,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-28 02:58:17,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297349762] [2020-11-28 02:58:17,425 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:17,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:17,425 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 7 times [2020-11-28 02:58:17,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:17,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525219718] [2020-11-28 02:58:17,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:17,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:17,436 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:17,438 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:17,592 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-11-28 02:58:17,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:17,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:17,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:17,594 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. cyclomatic complexity: 3 Second operand 10 states. [2020-11-28 02:58:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:17,661 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-11-28 02:58:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:58:17,662 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 22 transitions. [2020-11-28 02:58:17,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:17,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 22 transitions. [2020-11-28 02:58:17,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 02:58:17,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-28 02:58:17,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 22 transitions. [2020-11-28 02:58:17,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:17,664 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-28 02:58:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 22 transitions. [2020-11-28 02:58:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-11-28 02:58:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 02:58:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-28 02:58:17,667 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-28 02:58:17,667 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-28 02:58:17,667 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-28 02:58:17,667 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 20 transitions. [2020-11-28 02:58:17,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:17,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:17,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:17,669 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [7, 7, 1, 1, 1, 1] [2020-11-28 02:58:17,669 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:17,669 INFO L794 eck$LassoCheckResult]: Stem: 561#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 558#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 559#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 563#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 564#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 565#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 576#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 575#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 574#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 573#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 572#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 571#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 570#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 569#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 568#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 567#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 566#L21-3 assume !(main_~i~0 < 11); 562#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 560#L28-2 [2020-11-28 02:58:17,669 INFO L796 eck$LassoCheckResult]: Loop: 560#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 560#L28-2 [2020-11-28 02:58:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:17,670 INFO L82 PathProgramCache]: Analyzing trace with hash -690407015, now seen corresponding path program 7 times [2020-11-28 02:58:17,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:17,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189383752] [2020-11-28 02:58:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:17,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189383752] [2020-11-28 02:58:17,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760490358] [2020-11-28 02:58:17,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:17,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:58:17,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:17,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:17,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-28 02:58:17,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467812800] [2020-11-28 02:58:17,922 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:17,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:17,922 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 8 times [2020-11-28 02:58:17,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:17,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675664248] [2020-11-28 02:58:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:17,927 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:17,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:17,932 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:18,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:18,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 02:58:18,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:58:18,013 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. cyclomatic complexity: 3 Second operand 11 states. [2020-11-28 02:58:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:18,070 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-11-28 02:58:18,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:58:18,071 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 24 transitions. [2020-11-28 02:58:18,072 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:18,072 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 24 transitions. [2020-11-28 02:58:18,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 02:58:18,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-28 02:58:18,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 24 transitions. [2020-11-28 02:58:18,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:18,073 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-28 02:58:18,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 24 transitions. [2020-11-28 02:58:18,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-11-28 02:58:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 02:58:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-28 02:58:18,075 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-28 02:58:18,075 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-28 02:58:18,075 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-28 02:58:18,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 22 transitions. [2020-11-28 02:58:18,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:18,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:18,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:18,076 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 1, 1, 1, 1] [2020-11-28 02:58:18,077 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:18,077 INFO L794 eck$LassoCheckResult]: Stem: 668#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 665#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 666#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 670#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 671#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 672#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 685#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 684#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 683#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 682#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 681#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 680#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 679#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 678#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 677#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 676#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 675#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 674#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 673#L21-3 assume !(main_~i~0 < 11); 669#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 667#L28-2 [2020-11-28 02:58:18,077 INFO L796 eck$LassoCheckResult]: Loop: 667#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 667#L28-2 [2020-11-28 02:58:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:18,077 INFO L82 PathProgramCache]: Analyzing trace with hash -2056121829, now seen corresponding path program 8 times [2020-11-28 02:58:18,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:18,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144793333] [2020-11-28 02:58:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:18,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144793333] [2020-11-28 02:58:18,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592033050] [2020-11-28 02:58:18,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:18,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:58:18,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:18,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 02:58:18,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:18,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:18,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-28 02:58:18,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361816181] [2020-11-28 02:58:18,278 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:18,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:18,278 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 9 times [2020-11-28 02:58:18,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:18,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430211073] [2020-11-28 02:58:18,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:18,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:18,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:18,294 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:18,441 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-11-28 02:58:18,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:18,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 02:58:18,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:18,443 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. cyclomatic complexity: 3 Second operand 12 states. [2020-11-28 02:58:18,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:18,526 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-28 02:58:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:58:18,527 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 26 transitions. [2020-11-28 02:58:18,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:18,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 25 states and 26 transitions. [2020-11-28 02:58:18,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 02:58:18,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-28 02:58:18,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 26 transitions. [2020-11-28 02:58:18,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:18,528 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-11-28 02:58:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 26 transitions. [2020-11-28 02:58:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-11-28 02:58:18,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 02:58:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-28 02:58:18,531 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-28 02:58:18,531 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-28 02:58:18,531 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-28 02:58:18,531 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 24 transitions. [2020-11-28 02:58:18,531 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:18,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:18,533 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:18,534 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [9, 9, 1, 1, 1, 1] [2020-11-28 02:58:18,534 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:18,534 INFO L794 eck$LassoCheckResult]: Stem: 786#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 783#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 784#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 788#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 789#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 790#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 805#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 804#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 803#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 802#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 801#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 800#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 799#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 798#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 797#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 796#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 795#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 794#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 793#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 792#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 791#L21-3 assume !(main_~i~0 < 11); 787#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 785#L28-2 [2020-11-28 02:58:18,535 INFO L796 eck$LassoCheckResult]: Loop: 785#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 785#L28-2 [2020-11-28 02:58:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:18,535 INFO L82 PathProgramCache]: Analyzing trace with hash -248065507, now seen corresponding path program 9 times [2020-11-28 02:58:18,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:18,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072391573] [2020-11-28 02:58:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:18,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072391573] [2020-11-28 02:58:18,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369534160] [2020-11-28 02:58:18,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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 [2020-11-28 02:58:18,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-28 02:58:18,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:18,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:58:18,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:18,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:18,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-28 02:58:18,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879023638] [2020-11-28 02:58:18,878 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:18,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:18,878 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 10 times [2020-11-28 02:58:18,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:18,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847248028] [2020-11-28 02:58:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:18,890 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:18,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:18,898 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:19,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:19,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 02:58:19,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:58:19,004 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. cyclomatic complexity: 3 Second operand 13 states. [2020-11-28 02:58:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:19,087 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-11-28 02:58:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 02:58:19,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 29 transitions. [2020-11-28 02:58:19,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:19,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 29 transitions. [2020-11-28 02:58:19,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-28 02:58:19,090 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-28 02:58:19,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 29 transitions. [2020-11-28 02:58:19,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:19,091 INFO L691 BuchiCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-28 02:58:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 29 transitions. [2020-11-28 02:58:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-11-28 02:58:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 02:58:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-11-28 02:58:19,093 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-11-28 02:58:19,093 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-11-28 02:58:19,093 INFO L427 BuchiCegarLoop]: ======== Iteration 12============ [2020-11-28 02:58:19,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 26 transitions. [2020-11-28 02:58:19,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:19,094 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:19,094 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:19,095 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1] [2020-11-28 02:58:19,095 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:19,095 INFO L794 eck$LassoCheckResult]: Stem: 916#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 913#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 914#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 918#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 919#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 920#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 921#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 937#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 936#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 935#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 934#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 933#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 932#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 931#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 930#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 929#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 928#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 927#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 926#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 925#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 924#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 923#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 922#L21-3 assume !(main_~i~0 < 11); 917#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 915#L28-2 [2020-11-28 02:58:19,095 INFO L796 eck$LassoCheckResult]: Loop: 915#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 915#L28-2 [2020-11-28 02:58:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:19,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2127272351, now seen corresponding path program 10 times [2020-11-28 02:58:19,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:19,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38198574] [2020-11-28 02:58:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:19,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38198574] [2020-11-28 02:58:19,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225567415] [2020-11-28 02:58:19,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/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 [2020-11-28 02:58:19,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 02:58:19,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:19,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 02:58:19,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:19,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:19,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-11-28 02:58:19,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74340046] [2020-11-28 02:58:19,357 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:58:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:19,358 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 11 times [2020-11-28 02:58:19,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:19,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012385650] [2020-11-28 02:58:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:19,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:19,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:19,369 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:19,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:19,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 02:58:19,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:58:19,461 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. cyclomatic complexity: 3 Second operand 14 states. [2020-11-28 02:58:19,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:19,528 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-11-28 02:58:19,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:58:19,529 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 30 transitions. [2020-11-28 02:58:19,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:19,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 30 transitions. [2020-11-28 02:58:19,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-28 02:58:19,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-28 02:58:19,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 30 transitions. [2020-11-28 02:58:19,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:19,530 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-11-28 02:58:19,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 30 transitions. [2020-11-28 02:58:19,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-28 02:58:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:58:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-28 02:58:19,533 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-28 02:58:19,533 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-28 02:58:19,533 INFO L427 BuchiCegarLoop]: ======== Iteration 13============ [2020-11-28 02:58:19,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 28 transitions. [2020-11-28 02:58:19,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:58:19,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:58:19,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:58:19,534 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [11, 11, 1, 1, 1, 1] [2020-11-28 02:58:19,534 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:58:19,535 INFO L794 eck$LassoCheckResult]: Stem: 1056#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(39);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1053#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem9, main_#t~post10, main_#t~mem11, main_~#in~0.base, main_~#in~0.offset, main_~s~0.base, main_~s~0.offset, main_~c~0, main_~i~0, main_~j~0, main_~idx_in~0;call main_~#in~0.base, main_~#in~0.offset := #Ultimate.allocOnStack(11);havoc main_~s~0.base, main_~s~0.offset;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~idx_in~0;main_~i~0 := 0; 1054#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1058#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1059#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1060#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1061#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1079#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1078#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1077#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1076#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1075#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1074#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1073#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1072#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1071#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1070#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1069#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1068#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1067#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1066#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1065#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1064#L21-3 assume !!(main_~i~0 < 11);call write~int(main_#t~nondet8, main_~#in~0.base, main_~#in~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1063#L21-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1062#L21-3 assume !(main_~i~0 < 11); 1057#L21-4 call write~int(0, main_~#in~0.base, 10 + main_~#in~0.offset, 1);main_~idx_in~0 := 0;main_~s~0.base, main_~s~0.offset := main_~#in~0.base, main_~#in~0.offset;main_~i~0 := 0;call main_#t~mem9 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem9;havoc main_#t~mem9; 1055#L28-2 [2020-11-28 02:58:19,535 INFO L796 eck$LassoCheckResult]: Loop: 1055#L28-2 assume !!(48 <= main_~c~0 % 256 && main_~c~0 % 256 <= 57);main_~j~0 := main_~c~0 % 256 - 48;main_~i~0 := (if (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 <= 2147483647 then (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 else (10 * main_~i~0 + main_~j~0) % 4294967296 % 4294967296 - 4294967296);main_#t~post10 := main_~idx_in~0;main_~idx_in~0 := 1 + main_#t~post10;havoc main_#t~post10;call main_#t~mem11 := read~int(main_~#in~0.base, main_~#in~0.offset + main_~idx_in~0, 1);main_~c~0 := main_#t~mem11;havoc main_#t~mem11; 1055#L28-2 [2020-11-28 02:58:19,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:19,535 INFO L82 PathProgramCache]: Analyzing trace with hash -95647583, now seen corresponding path program 11 times [2020-11-28 02:58:19,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:19,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473985752] [2020-11-28 02:58:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:19,552 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:19,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:19,576 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:19,577 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 12 times [2020-11-28 02:58:19,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:19,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853597991] [2020-11-28 02:58:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:19,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:19,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:19,601 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:19,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:19,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1329892248, now seen corresponding path program 1 times [2020-11-28 02:58:19,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:19,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128563712] [2020-11-28 02:58:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:19,625 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:19,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:19,650 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:31,127 WARN L193 SmtUtils]: Spent 11.39 s on a formula simplification. DAG size of input: 259 DAG size of output: 197 [2020-11-28 02:58:31,991 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-11-28 02:58:31,999 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:58:32,000 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:58:32,000 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:58:32,000 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:58:32,000 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:58:32,000 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:32,000 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:58:32,000 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:58:32,000 INFO L133 ssoRankerPreferences]: Filename of dumped script: verisec_sendmail_tTflag_arr_one_loop.c_Iteration13_Lasso [2020-11-28 02:58:32,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:58:32,000 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:58:32,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,463 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-11-28 02:58:32,584 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-11-28 02:58:32,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:58:32,916 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-11-28 02:58:33,322 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-28 02:58:33,385 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:58:33,385 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,399 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,405 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:33,405 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:58:33,412 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,452 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 [2020-11-28 02:58:33,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:33,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:33,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,457 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,495 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 [2020-11-28 02:58:33,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,502 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:33,502 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,506 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,543 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 [2020-11-28 02:58:33,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,550 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:33,550 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,555 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,594 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 [2020-11-28 02:58:33,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,599 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:33,599 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,603 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,641 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 [2020-11-28 02:58:33,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,645 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:33,645 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,649 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,688 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 [2020-11-28 02:58:33,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,690 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:33,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,690 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,690 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:33,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,693 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,732 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 [2020-11-28 02:58:33,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,736 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:33,736 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,740 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,778 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 [2020-11-28 02:58:33,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,782 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:33,782 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,786 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,823 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 [2020-11-28 02:58:33,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:58:33,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:58:33,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,827 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:58:33,872 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 [2020-11-28 02:58:33,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,875 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:33,875 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,879 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,912 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 [2020-11-28 02:58:33,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:58:33,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:58:33,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:58:33,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:58:33,918 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:58:33,918 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:58:33,925 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:58:33,955 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-11-28 02:58:33,955 INFO L444 ModelExtractionUtils]: 9 out of 19 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66d37257-3e52-4902-b7ec-0d9c9573da4e/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:58:33,958 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:58:33,966 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-28 02:58:33,966 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:58:33,966 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#in~0.base)_2, ULTIMATE.start_main_~idx_in~0) = 1*v_rep(select #length ULTIMATE.start_main_~#in~0.base)_2 - 1*ULTIMATE.start_main_~idx_in~0 Supporting invariants [1*ULTIMATE.start_main_~#in~0.offset >= 0] [2020-11-28 02:58:34,025 INFO L297 tatePredicateManager]: 11 out of 12 supporting invariants were superfluous and have been removed [2020-11-28 02:58:34,027 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 02:58:34,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:34,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:58:34,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:34,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:58:34,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:34,110 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-28 02:58:34,110 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 28 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-11-28 02:58:34,148 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 28 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 28 states and 29 transitions. Complement of second has 3 states. [2020-11-28 02:58:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 2 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-28 02:58:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:58:34,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-28 02:58:34,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 26 letters. Loop has 1 letters. [2020-11-28 02:58:34,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:58:34,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 27 letters. Loop has 1 letters. [2020-11-28 02:58:34,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:58:34,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 26 letters. Loop has 2 letters. [2020-11-28 02:58:34,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:58:34,151 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 29 transitions. [2020-11-28 02:58:34,152 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:58:34,152 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 0 states and 0 transitions. [2020-11-28 02:58:34,152 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:58:34,152 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:58:34,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:58:34,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:58:34,152 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:34,152 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:34,152 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:34,152 INFO L427 BuchiCegarLoop]: ======== Iteration 14============ [2020-11-28 02:58:34,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:34,153 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:58:34,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:58:34,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:58:34 BoogieIcfgContainer [2020-11-28 02:58:34,157 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:58:34,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:34,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:34,158 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:34,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:11" (3/4) ... [2020-11-28 02:58:34,161 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:58:34,161 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:34,162 INFO L168 Benchmark]: Toolchain (without parser) took 23428.72 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 99.6 MB in the beginning and 104.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:34,162 INFO L168 Benchmark]: CDTParser took 1.32 ms. Allocated memory is still 86.0 MB. Free memory is still 50.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:34,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.56 ms. Allocated memory is still 123.7 MB. Free memory was 99.2 MB in the beginning and 99.8 MB in the end (delta: -585.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:34,163 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.90 ms. Allocated memory is still 123.7 MB. Free memory was 99.8 MB in the beginning and 98.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:34,164 INFO L168 Benchmark]: Boogie Preprocessor took 25.23 ms. Allocated memory is still 123.7 MB. Free memory was 98.5 MB in the beginning and 97.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:34,164 INFO L168 Benchmark]: RCFGBuilder took 517.80 ms. Allocated memory is still 123.7 MB. Free memory was 97.2 MB in the beginning and 84.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:34,167 INFO L168 Benchmark]: BuchiAutomizer took 22559.70 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 83.8 MB in the beginning and 104.7 MB in the end (delta: -20.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:34,167 INFO L168 Benchmark]: Witness Printer took 3.04 ms. Allocated memory is still 218.1 MB. Free memory is still 104.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:34,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.32 ms. Allocated memory is still 86.0 MB. Free memory is still 50.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.56 ms. Allocated memory is still 123.7 MB. Free memory was 99.2 MB in the beginning and 99.8 MB in the end (delta: -585.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.90 ms. Allocated memory is still 123.7 MB. Free memory was 99.8 MB in the beginning and 98.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.23 ms. Allocated memory is still 123.7 MB. Free memory was 98.5 MB in the beginning and 97.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 517.80 ms. Allocated memory is still 123.7 MB. Free memory was 97.2 MB in the beginning and 84.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 22559.70 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 83.8 MB in the beginning and 104.7 MB in the end (delta: -20.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.04 ms. Allocated memory is still 218.1 MB. Free memory is still 104.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (11 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 21 * unknown-#length-unknown[in] + -2 * i and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[in] + -1 * idx_in and consists of 3 locations. 11 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 22.4s and 14 iterations. TraceHistogramMax:11. Analysis of lassos took 21.3s. Construction of modules took 0.4s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 13. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 23 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 27 states and ocurred in iteration 12. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 50 SDtfs, 73 SDslu, 49 SDs, 0 SdLazy, 279 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU11 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital249 mio100 ax100 hnf99 lsp100 ukn48 mio100 lsp42 div141 bol100 ite100 ukn100 eq161 hnf74 smp97 dnf202 smp75 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...