./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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 b812e7d14425eea3a24125f5e2db40eadfc6c14c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:14:51,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:14:51,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:14:51,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:14:51,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:14:51,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:14:51,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:14:51,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:14:51,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:14:51,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:14:51,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:14:51,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:14:51,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:14:51,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:14:51,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:14:51,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:14:51,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:14:51,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:14:51,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:14:51,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:14:51,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:14:51,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:14:51,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:14:51,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:14:51,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:14:51,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:14:51,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:14:51,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:14:51,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:14:51,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:14:51,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:14:51,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:14:51,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:14:51,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:14:51,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:14:51,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:14:51,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:14:51,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:14:51,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:14:51,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:14:51,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:14:51,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 18:14:51,173 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:14:51,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:14:51,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:14:51,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:14:51,177 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:14:51,178 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:14:51,178 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:14:51,179 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:14:51,179 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:14:51,180 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:14:51,180 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:14:51,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:14:51,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:14:51,182 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:14:51,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:14:51,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:14:51,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:14:51,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:14:51,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:14:51,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:14:51,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:14:51,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:14:51,184 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:14:51,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:14:51,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:14:51,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:14:51,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:14:51,185 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:14:51,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:14:51,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:14:51,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:14:51,187 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:14:51,188 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:14:51,188 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_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b812e7d14425eea3a24125f5e2db40eadfc6c14c [2020-11-29 18:14:51,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:14:51,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:14:51,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:14:51,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:14:51,486 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:14:51,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i [2020-11-29 18:14:51,568 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/data/f4c814006/e1e5aa9c5c744b9fa56ab860d5621b0e/FLAG049da2321 [2020-11-29 18:14:52,179 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:14:52,182 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i [2020-11-29 18:14:52,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/data/f4c814006/e1e5aa9c5c744b9fa56ab860d5621b0e/FLAG049da2321 [2020-11-29 18:14:52,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/data/f4c814006/e1e5aa9c5c744b9fa56ab860d5621b0e [2020-11-29 18:14:52,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:14:52,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:14:52,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:14:52,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:14:52,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:14:52,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:52,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d7604b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52, skipping insertion in model container [2020-11-29 18:14:52,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:52,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:14:52,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:14:52,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:14:52,867 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:14:52,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:14:52,962 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:14:52,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52 WrapperNode [2020-11-29 18:14:52,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:14:52,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:14:52,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:14:52,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:14:52,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:52,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:53,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:14:53,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:14:53,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:14:53,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:14:53,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:53,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:53,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:53,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:53,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:53,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:53,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (1/1) ... [2020-11-29 18:14:53,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:14:53,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:14:53,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:14:53,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:14:53,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:14:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:14:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:14:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:14:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:14:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:14:53,442 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:14:53,442 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-29 18:14:53,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:14:53 BoogieIcfgContainer [2020-11-29 18:14:53,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:14:53,445 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:14:53,445 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:14:53,456 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:14:53,456 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:14:53,457 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:14:52" (1/3) ... [2020-11-29 18:14:53,460 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60bba814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:14:53, skipping insertion in model container [2020-11-29 18:14:53,460 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:14:53,460 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:14:52" (2/3) ... [2020-11-29 18:14:53,460 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60bba814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:14:53, skipping insertion in model container [2020-11-29 18:14:53,460 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:14:53,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:14:53" (3/3) ... [2020-11-29 18:14:53,479 INFO L373 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrlen-alloca-1.i [2020-11-29 18:14:53,531 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:14:53,531 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:14:53,532 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:14:53,532 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:14:53,532 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:14:53,532 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:14:53,532 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:14:53,533 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:14:53,562 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-29 18:14:53,583 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-29 18:14:53,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:14:53,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:14:53,594 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 18:14:53,594 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 18:14:53,595 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:14:53,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-29 18:14:53,597 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-29 18:14:53,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:14:53,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:14:53,598 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 18:14:53,598 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 18:14:53,607 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L524true assume !(main_~length1~0 < 1); 11#L524-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 5#L528-3true [2020-11-29 18:14:53,609 INFO L796 eck$LassoCheckResult]: Loop: 5#L528-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 3#L528-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5#L528-3true [2020-11-29 18:14:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:53,623 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-11-29 18:14:53,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:14:53,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021954597] [2020-11-29 18:14:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:14:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:53,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:53,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:53,769 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:14:53,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:53,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2020-11-29 18:14:53,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:14:53,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158555211] [2020-11-29 18:14:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:14:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:53,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:53,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:53,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:14:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:53,806 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2020-11-29 18:14:53,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:14:53,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860033438] [2020-11-29 18:14:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:14:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:53,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:53,847 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:53,852 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:14:54,091 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-11-29 18:14:54,175 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:14:54,175 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:14:54,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:14:54,178 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:14:54,178 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:14:54,178 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:54,179 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:14:54,179 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:14:54,179 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca-1.i_Iteration1_Lasso [2020-11-29 18:14:54,179 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:14:54,179 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:14:54,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:54,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:54,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:54,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:54,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:54,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:54,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:54,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:54,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:54,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:54,696 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:14:54,704 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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) [2020-11-29 18:14:54,715 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:54,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:54,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:54,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:54,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:54,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:54,723 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:54,724 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 [2020-11-29 18:14:54,727 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:14:54,776 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:54,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:54,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:54,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:54,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:54,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:54,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:54,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:54,784 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:14:54,833 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:54,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:54,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:54,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:54,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:54,836 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:54,837 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:54,837 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:54,839 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:14:54,865 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:54,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:54,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:54,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:54,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:54,873 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:14:54,873 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:14:54,877 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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) [2020-11-29 18:14:54,923 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:54,925 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:54,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:54,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:54,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:54,932 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:14:54,932 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:14:54,937 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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) [2020-11-29 18:14:54,980 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:54,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:54,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:54,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:54,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:54,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:54,984 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:54,984 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:54,987 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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) [2020-11-29 18:14:55,032 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:55,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:55,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:55,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:55,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:55,046 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:14:55,046 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:55,060 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:14:55,115 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2020-11-29 18:14:55,115 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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) [2020-11-29 18:14:55,147 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:55,154 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 18:14:55,155 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:14:55,155 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-29 18:14:55,206 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-29 18:14:55,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:14:55,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:14:55,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:14:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:14:55,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:14:55,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:14:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:14:55,368 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 18:14:55,370 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 3 states. [2020-11-29 18:14:55,428 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 3 states. Result 35 states and 45 transitions. Complement of second has 7 states. [2020-11-29 18:14:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 18:14:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:14:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2020-11-29 18:14:55,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 18:14:55,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:14:55,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 18:14:55,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:14:55,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-29 18:14:55,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:14:55,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 45 transitions. [2020-11-29 18:14:55,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 18:14:55,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 11 states and 14 transitions. [2020-11-29 18:14:55,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 18:14:55,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-29 18:14:55,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2020-11-29 18:14:55,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:14:55,446 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-11-29 18:14:55,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2020-11-29 18:14:55,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 18:14:55,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 18:14:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2020-11-29 18:14:55,474 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-11-29 18:14:55,474 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-11-29 18:14:55,475 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:14:55,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2020-11-29 18:14:55,476 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 18:14:55,476 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:14:55,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:14:55,476 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 18:14:55,476 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:14:55,477 INFO L794 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 107#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 108#L524 assume !(main_~length1~0 < 1); 117#L524-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 114#L528-3 assume !(main_~i~0 < main_~length1~0 - 1); 115#L528-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 113#L518-4 [2020-11-29 18:14:55,477 INFO L796 eck$LassoCheckResult]: Loop: 113#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 116#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 112#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 113#L518-4 [2020-11-29 18:14:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:55,478 INFO L82 PathProgramCache]: Analyzing trace with hash 889568397, now seen corresponding path program 1 times [2020-11-29 18:14:55,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:14:55,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943326788] [2020-11-29 18:14:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:14:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:55,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:55,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:55,512 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:14:55,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:55,513 INFO L82 PathProgramCache]: Analyzing trace with hash 56764, now seen corresponding path program 1 times [2020-11-29 18:14:55,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:14:55,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329897390] [2020-11-29 18:14:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:14:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:55,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:55,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:55,527 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:14:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1183925680, now seen corresponding path program 1 times [2020-11-29 18:14:55,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:14:55,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206418678] [2020-11-29 18:14:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:14:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:14:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:14:55,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206418678] [2020-11-29 18:14:55,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:14:55,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 18:14:55,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537474588] [2020-11-29 18:14:55,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:14:55,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:14:55,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:14:55,847 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 7 states. [2020-11-29 18:14:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:14:55,997 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-29 18:14:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:14:55,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2020-11-29 18:14:55,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 18:14:56,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 14 transitions. [2020-11-29 18:14:56,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-29 18:14:56,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-29 18:14:56,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2020-11-29 18:14:56,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:14:56,000 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-29 18:14:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2020-11-29 18:14:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-11-29 18:14:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 18:14:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-29 18:14:56,002 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-29 18:14:56,002 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-29 18:14:56,003 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 18:14:56,003 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2020-11-29 18:14:56,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 18:14:56,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:14:56,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:14:56,004 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:14:56,004 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:14:56,004 INFO L794 eck$LassoCheckResult]: Stem: 155#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 151#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 152#L524 assume !(main_~length1~0 < 1); 161#L524-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 158#L528-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 153#L528-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 154#L528-3 assume !(main_~i~0 < main_~length1~0 - 1); 159#L528-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 157#L518-4 [2020-11-29 18:14:56,004 INFO L796 eck$LassoCheckResult]: Loop: 157#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 160#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 156#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 157#L518-4 [2020-11-29 18:14:56,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:56,005 INFO L82 PathProgramCache]: Analyzing trace with hash 176793839, now seen corresponding path program 1 times [2020-11-29 18:14:56,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:14:56,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182060791] [2020-11-29 18:14:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:14:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:56,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:56,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:56,070 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:14:56,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:56,075 INFO L82 PathProgramCache]: Analyzing trace with hash 56764, now seen corresponding path program 2 times [2020-11-29 18:14:56,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:14:56,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910331560] [2020-11-29 18:14:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:14:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:56,089 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:56,096 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:56,098 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:14:56,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:56,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1235379726, now seen corresponding path program 1 times [2020-11-29 18:14:56,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:14:56,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491150572] [2020-11-29 18:14:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:14:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:56,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:14:56,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:14:56,174 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:14:56,464 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-11-29 18:14:56,574 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:14:56,575 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:14:56,575 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:14:56,575 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:14:56,575 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:14:56,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:56,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:14:56,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:14:56,576 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca-1.i_Iteration3_Lasso [2020-11-29 18:14:56,576 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:14:56,576 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:14:56,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,798 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-11-29 18:14:56,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:56,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:14:57,062 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-11-29 18:14:57,335 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:14:57,335 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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 [2020-11-29 18:14:57,346 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,348 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:57,348 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,348 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,348 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,349 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:57,349 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:14:57,351 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,384 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,385 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:57,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,386 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:57,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:14:57,395 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,423 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:57,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,424 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:57,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:14:57,449 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:14:57,499 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:57,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:57,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,507 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,545 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,550 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:14:57,550 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:14:57,554 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:14:57,607 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:57,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,610 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:57,610 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,612 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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) [2020-11-29 18:14:57,650 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:57,652 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,652 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,652 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:57,653 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,656 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,689 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:14:57,689 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:14:57,695 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,718 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,722 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:14:57,722 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:14:57,729 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,755 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,757 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,757 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:14:57,757 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,757 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,757 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,758 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:14:57,758 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:14:57,762 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,788 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:14:57,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:14:57,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:14:57,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:14:57,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:14:57,802 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:14:57,802 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:14:57,817 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:14:57,841 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-11-29 18:14:57,841 INFO L444 ModelExtractionUtils]: 21 out of 31 variables were initially zero. Simplification set additionally 7 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31170f41-00c1-4a20-b7a5-11d8918fc3a3/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:14:57,843 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:14:57,846 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 18:14:57,846 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:14:57,846 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc5.base)_2, ULTIMATE.start_cstrlen_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc5.base)_2 - 1*ULTIMATE.start_cstrlen_~s~0.offset Supporting invariants [] [2020-11-29 18:14:57,877 INFO L297 tatePredicateManager]: 2 out of 3 supporting invariants were superfluous and have been removed [2020-11-29 18:14:57,879 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 18:14:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:14:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:14:57,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 18:14:57,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:14:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:14:57,978 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:14:57,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:14:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:14:58,015 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-11-29 18:14:58,015 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-11-29 18:14:58,079 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 14 states and 17 transitions. Complement of second has 5 states. [2020-11-29 18:14:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 18:14:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:14:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-29 18:14:58,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-29 18:14:58,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:14:58,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 3 letters. [2020-11-29 18:14:58,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:14:58,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 6 letters. [2020-11-29 18:14:58,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:14:58,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2020-11-29 18:14:58,083 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:14:58,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2020-11-29 18:14:58,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 18:14:58,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 18:14:58,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 18:14:58,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:14:58,084 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:14:58,084 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:14:58,084 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:14:58,084 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 18:14:58,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:14:58,084 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:14:58,084 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 18:14:58,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:14:58 BoogieIcfgContainer [2020-11-29 18:14:58,090 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:14:58,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:14:58,090 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:14:58,091 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:14:58,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:14:53" (3/4) ... [2020-11-29 18:14:58,094 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:14:58,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:14:58,095 INFO L168 Benchmark]: Toolchain (without parser) took 5644.63 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 55.4 MB in the beginning and 50.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:14:58,096 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:14:58,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.14 ms. Allocated memory is still 94.4 MB. Free memory was 55.2 MB in the beginning and 60.4 MB in the end (delta: -5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:14:58,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.43 ms. Allocated memory is still 94.4 MB. Free memory was 60.4 MB in the beginning and 58.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:14:58,098 INFO L168 Benchmark]: Boogie Preprocessor took 28.28 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 57.5 MB in the end (delta: 889.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:14:58,098 INFO L168 Benchmark]: RCFGBuilder took 409.88 ms. Allocated memory is still 94.4 MB. Free memory was 57.1 MB in the beginning and 43.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:14:58,099 INFO L168 Benchmark]: BuchiAutomizer took 4645.04 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 43.2 MB in the beginning and 50.1 MB in the end (delta: -6.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:14:58,100 INFO L168 Benchmark]: Witness Printer took 3.56 ms. Allocated memory is still 136.3 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:14:58,104 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 511.14 ms. Allocated memory is still 94.4 MB. Free memory was 55.2 MB in the beginning and 60.4 MB in the end (delta: -5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.43 ms. Allocated memory is still 94.4 MB. Free memory was 60.4 MB in the beginning and 58.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.28 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 57.5 MB in the end (delta: 889.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 409.88 ms. Allocated memory is still 94.4 MB. Free memory was 57.1 MB in the beginning and 43.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4645.04 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 43.2 MB in the beginning and 50.1 MB in the end (delta: -6.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.56 ms. Allocated memory is still 136.3 MB. Free memory is still 50.1 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] + -1 * s and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 45 SDslu, 37 SDs, 0 SdLazy, 49 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital109 mio100 ax116 hnf99 lsp80 ukn83 mio100 lsp57 div100 bol100 ite100 ukn100 eq177 hnf89 smp98 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms 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...