./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/cstrspn-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_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/cstrspn-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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 646417a8dd8807492175439f0c109786ec3887ae .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 22:01:38,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:01:38,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:01:38,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:01:38,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:01:38,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:01:38,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:01:38,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:01:38,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:01:38,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:01:38,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:01:38,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:01:38,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:01:38,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:01:38,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:01:38,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:01:38,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:01:38,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:01:38,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:01:38,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:01:38,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:01:38,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:01:38,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:01:38,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:01:38,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:01:38,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:01:38,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:01:38,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:01:38,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:01:38,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:01:38,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:01:38,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:01:38,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:01:38,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:01:38,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:01:38,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:01:38,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:01:38,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:01:38,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:01:38,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:01:38,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:01:38,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 22:01:38,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:01:38,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:01:38,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:01:38,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:01:38,333 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:01:38,333 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:01:38,333 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:01:38,334 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:01:38,334 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:01:38,334 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:01:38,335 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:01:38,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:01:38,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:01:38,336 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:01:38,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:01:38,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:01:38,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:01:38,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:01:38,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:01:38,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:01:38,337 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:01:38,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:01:38,338 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:01:38,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:01:38,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:01:38,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:01:38,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:01:38,339 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:01:38,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:01:38,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:01:38,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:01:38,342 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:01:38,343 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:01:38,343 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_22d78483-2edf-4517-a739-e90fa62a1f26/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 646417a8dd8807492175439f0c109786ec3887ae [2020-11-29 22:01:38,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:01:38,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:01:38,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:01:38,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:01:38,727 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:01:38,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrspn-alloca-1.i [2020-11-29 22:01:38,820 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/data/d5587d50e/39f4fe17f08a4636bdee186d8d223500/FLAG5994a56a9 [2020-11-29 22:01:39,316 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:01:39,317 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/sv-benchmarks/c/array-memsafety/cstrspn-alloca-1.i [2020-11-29 22:01:39,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/data/d5587d50e/39f4fe17f08a4636bdee186d8d223500/FLAG5994a56a9 [2020-11-29 22:01:39,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/data/d5587d50e/39f4fe17f08a4636bdee186d8d223500 [2020-11-29 22:01:39,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:01:39,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:01:39,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:01:39,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:01:39,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:01:39,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:01:39" (1/1) ... [2020-11-29 22:01:39,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713ac58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:39, skipping insertion in model container [2020-11-29 22:01:39,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:01:39" (1/1) ... [2020-11-29 22:01:39,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:01:39,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:01:40,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:01:40,068 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:01:40,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:01:40,167 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:01:40,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40 WrapperNode [2020-11-29 22:01:40,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:01:40,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:01:40,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:01:40,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:01:40,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (1/1) ... [2020-11-29 22:01:40,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (1/1) ... [2020-11-29 22:01:40,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:01:40,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:01:40,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:01:40,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:01:40,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (1/1) ... [2020-11-29 22:01:40,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (1/1) ... [2020-11-29 22:01:40,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (1/1) ... [2020-11-29 22:01:40,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (1/1) ... [2020-11-29 22:01:40,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (1/1) ... [2020-11-29 22:01:40,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (1/1) ... [2020-11-29 22:01:40,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (1/1) ... [2020-11-29 22:01:40,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:01:40,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:01:40,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:01:40,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:01:40,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:01:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:01:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:01:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:01:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:01:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:01:40,757 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:01:40,762 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 22:01:40,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:01:40 BoogieIcfgContainer [2020-11-29 22:01:40,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:01:40,780 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:01:40,780 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:01:40,784 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:01:40,801 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:01:40,801 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:01:39" (1/3) ... [2020-11-29 22:01:40,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2095073a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:01:40, skipping insertion in model container [2020-11-29 22:01:40,807 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:01:40,807 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:01:40" (2/3) ... [2020-11-29 22:01:40,807 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2095073a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:01:40, skipping insertion in model container [2020-11-29 22:01:40,807 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:01:40,807 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:01:40" (3/3) ... [2020-11-29 22:01:40,809 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrspn-alloca-1.i [2020-11-29 22:01:40,854 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:01:40,854 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:01:40,855 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:01:40,855 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:01:40,855 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:01:40,855 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:01:40,855 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:01:40,855 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:01:40,865 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2020-11-29 22:01:40,879 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2020-11-29 22:01:40,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:40,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:40,886 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 22:01:40,886 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:01:40,886 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:01:40,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2020-11-29 22:01:40,889 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2020-11-29 22:01:40,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:40,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:40,890 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 22:01:40,890 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:01:40,896 INFO L794 eck$LassoCheckResult]: Stem: 17#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 13#L532true assume !(main_~length1~0 < 1); 18#L532-2true assume !(main_~length2~0 < 1); 9#L535-1true call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 25#L541-3true [2020-11-29 22:01:40,897 INFO L796 eck$LassoCheckResult]: Loop: 25#L541-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 22#L541-2true main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 25#L541-3true [2020-11-29 22:01:40,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:40,902 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2020-11-29 22:01:40,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:40,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341334285] [2020-11-29 22:01:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:41,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:41,037 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:41,059 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:41,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2020-11-29 22:01:41,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:41,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623461516] [2020-11-29 22:01:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:41,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:41,082 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:41,085 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:41,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2020-11-29 22:01:41,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:41,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420035014] [2020-11-29 22:01:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:41,115 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:41,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:41,144 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:41,400 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-11-29 22:01:41,511 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:01:41,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:01:41,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:01:41,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:01:41,513 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:01:41,513 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:41,513 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:01:41,513 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:01:41,513 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration1_Lasso [2020-11-29 22:01:41,514 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:01:41,514 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:01:41,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,727 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-11-29 22:01:41,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:41,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:42,120 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:01:42,124 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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 22:01:42,137 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:42,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:42,140 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:42,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:42,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:42,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:42,143 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:42,143 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 22:01:42,146 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:42,189 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:42,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:42,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:42,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:42,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:42,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:42,194 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:42,194 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:42,197 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:42,224 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:42,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:42,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:42,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:42,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:42,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:42,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:42,232 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:42,234 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:42,267 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:42,269 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:42,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:42,270 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:42,270 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:42,275 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:42,276 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:42,285 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:42,312 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:42,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:42,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:42,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:42,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:42,318 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:42,318 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:42,323 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:42,359 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:42,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:42,362 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:42,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:42,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:42,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:42,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:42,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:42,367 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:42,401 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:42,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:42,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:42,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:42,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:42,416 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:42,416 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:42,432 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:01:42,511 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2020-11-29 22:01:42,511 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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 22:01:42,518 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 22:01:42,521 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 22:01:42,521 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:01:42,522 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 22:01:42,585 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2020-11-29 22:01:42,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:42,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:01:42,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:42,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:01:42,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:01:42,688 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:01:42,690 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states. Second operand 3 states. [2020-11-29 22:01:42,754 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states.. Second operand 3 states. Result 60 states and 87 transitions. Complement of second has 7 states. [2020-11-29 22:01:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:01:42,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:01:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2020-11-29 22:01:42,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 22:01:42,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:42,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 22:01:42,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:42,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 22:01:42,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:42,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 87 transitions. [2020-11-29 22:01:42,773 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-11-29 22:01:42,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 20 states and 27 transitions. [2020-11-29 22:01:42,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-29 22:01:42,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-11-29 22:01:42,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2020-11-29 22:01:42,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:01:42,779 INFO L691 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2020-11-29 22:01:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2020-11-29 22:01:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 22:01:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 22:01:42,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2020-11-29 22:01:42,804 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2020-11-29 22:01:42,804 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2020-11-29 22:01:42,804 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:01:42,805 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 27 transitions. [2020-11-29 22:01:42,805 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-11-29 22:01:42,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:42,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:42,806 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:42,806 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:01:42,806 INFO L794 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 167#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 168#L532 assume !(main_~length1~0 < 1); 169#L532-2 assume !(main_~length2~0 < 1); 163#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 164#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 160#L541-4 main_~i~1 := 0; 161#L546-3 [2020-11-29 22:01:42,807 INFO L796 eck$LassoCheckResult]: Loop: 161#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 165#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 161#L546-3 [2020-11-29 22:01:42,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:42,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935662, now seen corresponding path program 1 times [2020-11-29 22:01:42,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:42,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011230945] [2020-11-29 22:01:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:42,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:42,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:42,835 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:42,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:42,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 1 times [2020-11-29 22:01:42,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:42,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854827106] [2020-11-29 22:01:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:42,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:42,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:42,850 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:42,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:42,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384784, now seen corresponding path program 1 times [2020-11-29 22:01:42,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:42,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832702762] [2020-11-29 22:01:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:42,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:42,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:42,886 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:43,214 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-29 22:01:43,304 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:01:43,305 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:01:43,305 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:01:43,305 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:01:43,305 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:01:43,305 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:43,305 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:01:43,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:01:43,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration2_Lasso [2020-11-29 22:01:43,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:01:43,305 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:01:43,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,533 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-11-29 22:01:43,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:43,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:44,077 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:01:44,077 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:44,083 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,085 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:44,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,085 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,086 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:44,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:44,088 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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) [2020-11-29 22:01:44,130 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:44,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:44,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:44,134 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:44,177 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:44,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,179 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,180 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:44,180 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:44,182 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:44,222 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,223 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,224 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,224 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,227 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:44,227 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:44,231 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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) [2020-11-29 22:01:44,271 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:44,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,274 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:44,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:44,275 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:44,316 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,321 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:44,322 INFO L402 nArgumentSynthesizer]: A total of 2 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 22:01:44,328 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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 22:01:44,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,372 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,375 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:44,375 INFO L402 nArgumentSynthesizer]: A total of 2 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 22:01:44,379 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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 22:01:44,411 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,412 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:44,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,412 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,412 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,413 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:44,413 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:44,414 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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 22:01:44,439 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,442 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:44,442 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:44,445 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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 22:01:44,471 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,477 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:44,477 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:44,480 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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 22:01:44,506 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,510 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:44,511 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:44,544 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/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 22:01:44,578 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,584 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:44,584 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:44,590 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:44,625 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:44,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:44,626 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:44,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:44,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:44,635 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:44,635 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:44,646 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:01:44,708 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2020-11-29 22:01:44,709 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:44,713 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:44,717 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-29 22:01:44,717 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:01:44,717 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_2) = -1*ULTIMATE.start_main_~i~1 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_2 Supporting invariants [1*ULTIMATE.start_main_~nondetString2~0.offset >= 0] [2020-11-29 22:01:44,786 INFO L297 tatePredicateManager]: 5 out of 7 supporting invariants were superfluous and have been removed [2020-11-29 22:01:44,793 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 22:01:44,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:44,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:01:44,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:44,929 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:01:44,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:01:44,950 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 22:01:44,950 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 10 Second operand 4 states. [2020-11-29 22:01:45,022 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 31 states and 44 transitions. Complement of second has 7 states. [2020-11-29 22:01:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:01:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 22:01:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2020-11-29 22:01:45,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 22:01:45,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:45,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 2 letters. [2020-11-29 22:01:45,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:45,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 4 letters. [2020-11-29 22:01:45,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:45,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 44 transitions. [2020-11-29 22:01:45,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-29 22:01:45,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 21 states and 29 transitions. [2020-11-29 22:01:45,027 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-29 22:01:45,027 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 22:01:45,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 29 transitions. [2020-11-29 22:01:45,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:01:45,028 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 29 transitions. [2020-11-29 22:01:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 29 transitions. [2020-11-29 22:01:45,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-29 22:01:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 22:01:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2020-11-29 22:01:45,030 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 29 transitions. [2020-11-29 22:01:45,030 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 29 transitions. [2020-11-29 22:01:45,030 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:01:45,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 29 transitions. [2020-11-29 22:01:45,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-29 22:01:45,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:45,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:45,032 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:45,032 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:45,032 INFO L794 eck$LassoCheckResult]: Stem: 309#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 304#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 305#L532 assume !(main_~length1~0 < 1); 306#L532-2 assume !(main_~length2~0 < 1); 299#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 300#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 296#L541-4 main_~i~1 := 0; 297#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 303#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 293#L519-4 [2020-11-29 22:01:45,033 INFO L796 eck$LassoCheckResult]: Loop: 293#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 298#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 310#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 307#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 308#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7; 294#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 295#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 292#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 293#L519-4 [2020-11-29 22:01:45,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:45,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384726, now seen corresponding path program 1 times [2020-11-29 22:01:45,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:45,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088262694] [2020-11-29 22:01:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:45,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:45,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:45,075 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:45,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:45,076 INFO L82 PathProgramCache]: Analyzing trace with hash -904885455, now seen corresponding path program 1 times [2020-11-29 22:01:45,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:45,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945633224] [2020-11-29 22:01:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:45,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:45,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:45,115 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:45,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:45,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1903570310, now seen corresponding path program 1 times [2020-11-29 22:01:45,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:45,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148926082] [2020-11-29 22:01:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:01:45,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148926082] [2020-11-29 22:01:45,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:01:45,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-29 22:01:45,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466892688] [2020-11-29 22:01:45,582 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-11-29 22:01:45,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:01:45,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:01:45,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:01:45,647 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. cyclomatic complexity: 11 Second operand 10 states. [2020-11-29 22:01:46,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:46,023 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2020-11-29 22:01:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 22:01:46,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 66 transitions. [2020-11-29 22:01:46,026 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2020-11-29 22:01:46,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 48 states and 64 transitions. [2020-11-29 22:01:46,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-11-29 22:01:46,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2020-11-29 22:01:46,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 64 transitions. [2020-11-29 22:01:46,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:01:46,030 INFO L691 BuchiCegarLoop]: Abstraction has 48 states and 64 transitions. [2020-11-29 22:01:46,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 64 transitions. [2020-11-29 22:01:46,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2020-11-29 22:01:46,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 22:01:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2020-11-29 22:01:46,042 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 44 transitions. [2020-11-29 22:01:46,042 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 44 transitions. [2020-11-29 22:01:46,042 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 22:01:46,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 44 transitions. [2020-11-29 22:01:46,044 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2020-11-29 22:01:46,048 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:46,048 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:46,048 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:46,048 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:01:46,049 INFO L794 eck$LassoCheckResult]: Stem: 413#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 407#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 408#L532 assume !(main_~length1~0 < 1); 409#L532-2 assume !(main_~length2~0 < 1); 401#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 402#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 419#L541-4 main_~i~1 := 0; 405#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 406#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 423#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 422#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 415#L522-5 [2020-11-29 22:01:46,049 INFO L796 eck$LassoCheckResult]: Loop: 415#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 420#L522-1 assume !cstrspn_#t~short7; 421#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 415#L522-5 [2020-11-29 22:01:46,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:46,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2087759941, now seen corresponding path program 1 times [2020-11-29 22:01:46,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:46,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195460645] [2020-11-29 22:01:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:01:46,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195460645] [2020-11-29 22:01:46,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:01:46,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:01:46,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370953975] [2020-11-29 22:01:46,236 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:01:46,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:46,237 INFO L82 PathProgramCache]: Analyzing trace with hash 86558, now seen corresponding path program 1 times [2020-11-29 22:01:46,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:46,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985552516] [2020-11-29 22:01:46,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:01:46,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985552516] [2020-11-29 22:01:46,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:01:46,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:01:46,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225132236] [2020-11-29 22:01:46,253 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 22:01:46,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:01:46,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:01:46,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:01:46,254 INFO L87 Difference]: Start difference. First operand 32 states and 44 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-11-29 22:01:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:46,267 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2020-11-29 22:01:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:01:46,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 44 transitions. [2020-11-29 22:01:46,269 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2020-11-29 22:01:46,270 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 44 transitions. [2020-11-29 22:01:46,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-11-29 22:01:46,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-11-29 22:01:46,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 44 transitions. [2020-11-29 22:01:46,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:01:46,271 INFO L691 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-11-29 22:01:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 44 transitions. [2020-11-29 22:01:46,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-11-29 22:01:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 22:01:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2020-11-29 22:01:46,273 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 43 transitions. [2020-11-29 22:01:46,273 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 43 transitions. [2020-11-29 22:01:46,273 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 22:01:46,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 43 transitions. [2020-11-29 22:01:46,274 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2020-11-29 22:01:46,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:46,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:46,275 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:46,275 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:01:46,275 INFO L794 eck$LassoCheckResult]: Stem: 489#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 483#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 484#L532 assume !(main_~length1~0 < 1); 485#L532-2 assume !(main_~length2~0 < 1); 478#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 479#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 493#L541-4 main_~i~1 := 0; 501#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 498#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 476#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 477#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 490#L522-5 [2020-11-29 22:01:46,275 INFO L796 eck$LassoCheckResult]: Loop: 490#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 486#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 487#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 490#L522-5 [2020-11-29 22:01:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:46,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2087759941, now seen corresponding path program 2 times [2020-11-29 22:01:46,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:46,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546016434] [2020-11-29 22:01:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:01:46,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546016434] [2020-11-29 22:01:46,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:01:46,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 22:01:46,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721954570] [2020-11-29 22:01:46,410 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:01:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:46,410 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 1 times [2020-11-29 22:01:46,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:46,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147794143] [2020-11-29 22:01:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:46,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:46,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:46,424 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:46,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:01:46,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:01:46,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:01:46,550 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. cyclomatic complexity: 16 Second operand 7 states. [2020-11-29 22:01:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:46,670 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2020-11-29 22:01:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:01:46,670 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. [2020-11-29 22:01:46,671 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-29 22:01:46,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 23 states and 30 transitions. [2020-11-29 22:01:46,672 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-11-29 22:01:46,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-11-29 22:01:46,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2020-11-29 22:01:46,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:01:46,672 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-11-29 22:01:46,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2020-11-29 22:01:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-29 22:01:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 22:01:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2020-11-29 22:01:46,674 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2020-11-29 22:01:46,674 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2020-11-29 22:01:46,674 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 22:01:46,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2020-11-29 22:01:46,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-29 22:01:46,675 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:46,675 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:46,676 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:46,676 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:46,676 INFO L794 eck$LassoCheckResult]: Stem: 564#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 558#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 559#L532 assume !(main_~length1~0 < 1); 560#L532-2 assume !(main_~length2~0 < 1); 553#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 554#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 566#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 567#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 550#L541-4 main_~i~1 := 0; 551#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 557#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 547#L519-4 [2020-11-29 22:01:46,677 INFO L796 eck$LassoCheckResult]: Loop: 547#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 552#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 565#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 561#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 562#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7; 548#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 549#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 546#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 547#L519-4 [2020-11-29 22:01:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:46,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2034626632, now seen corresponding path program 1 times [2020-11-29 22:01:46,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:46,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462292397] [2020-11-29 22:01:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:46,698 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:46,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:46,721 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:46,722 INFO L82 PathProgramCache]: Analyzing trace with hash -904885455, now seen corresponding path program 2 times [2020-11-29 22:01:46,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:46,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048272839] [2020-11-29 22:01:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:46,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:46,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:46,746 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:46,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:46,747 INFO L82 PathProgramCache]: Analyzing trace with hash -164170776, now seen corresponding path program 1 times [2020-11-29 22:01:46,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:46,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301957296] [2020-11-29 22:01:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:01:46,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301957296] [2020-11-29 22:01:46,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:01:46,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-29 22:01:46,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936060585] [2020-11-29 22:01:47,186 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-11-29 22:01:47,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:01:47,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:01:47,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:01:47,240 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. cyclomatic complexity: 10 Second operand 10 states. [2020-11-29 22:01:47,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:47,513 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-11-29 22:01:47,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:01:47,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 49 transitions. [2020-11-29 22:01:47,514 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2020-11-29 22:01:47,515 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 45 transitions. [2020-11-29 22:01:47,515 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-11-29 22:01:47,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-11-29 22:01:47,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 45 transitions. [2020-11-29 22:01:47,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:01:47,516 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 45 transitions. [2020-11-29 22:01:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 45 transitions. [2020-11-29 22:01:47,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-29 22:01:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 22:01:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2020-11-29 22:01:47,520 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2020-11-29 22:01:47,520 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2020-11-29 22:01:47,520 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 22:01:47,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 44 transitions. [2020-11-29 22:01:47,521 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2020-11-29 22:01:47,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:47,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:47,521 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:47,521 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:47,522 INFO L794 eck$LassoCheckResult]: Stem: 653#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 647#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 648#L532 assume !(main_~length1~0 < 1); 649#L532-2 assume !(main_~length2~0 < 1); 641#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 642#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 658#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 659#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 636#L541-4 main_~i~1 := 0; 637#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 645#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 635#L519-4 [2020-11-29 22:01:47,522 INFO L796 eck$LassoCheckResult]: Loop: 635#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 638#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 662#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 661#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 654#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 655#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 666#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 664#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7; 632#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 633#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 634#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 635#L519-4 [2020-11-29 22:01:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:47,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2034626632, now seen corresponding path program 2 times [2020-11-29 22:01:47,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:47,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470050814] [2020-11-29 22:01:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:47,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:47,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:47,545 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:47,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:47,546 INFO L82 PathProgramCache]: Analyzing trace with hash -898285594, now seen corresponding path program 1 times [2020-11-29 22:01:47,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:47,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766861742] [2020-11-29 22:01:47,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:47,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:47,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:47,579 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:47,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:47,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1809250353, now seen corresponding path program 1 times [2020-11-29 22:01:47,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:47,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925414807] [2020-11-29 22:01:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:01:47,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925414807] [2020-11-29 22:01:47,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274205880] [2020-11-29 22:01:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:01:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:47,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 22:01:47,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:47,900 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:01:47,901 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-29 22:01:47,901 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:01:47,929 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-11-29 22:01:47,931 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:01:47,932 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:9, output treesize:5 [2020-11-29 22:01:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:01:48,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:01:48,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2020-11-29 22:01:48,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040761177] [2020-11-29 22:01:48,369 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-11-29 22:01:48,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:01:48,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:01:48,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:01:48,465 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. cyclomatic complexity: 13 Second operand 9 states. [2020-11-29 22:01:48,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:48,671 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-11-29 22:01:48,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:01:48,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 36 transitions. [2020-11-29 22:01:48,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-29 22:01:48,673 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 23 states and 29 transitions. [2020-11-29 22:01:48,673 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-11-29 22:01:48,673 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-11-29 22:01:48,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 29 transitions. [2020-11-29 22:01:48,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:01:48,674 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 29 transitions. [2020-11-29 22:01:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 29 transitions. [2020-11-29 22:01:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-29 22:01:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 22:01:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-11-29 22:01:48,676 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-11-29 22:01:48,677 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-11-29 22:01:48,677 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 22:01:48,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 28 transitions. [2020-11-29 22:01:48,678 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-29 22:01:48,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:48,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:48,679 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:48,679 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:48,680 INFO L794 eck$LassoCheckResult]: Stem: 808#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 802#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 803#L532 assume !(main_~length1~0 < 1); 804#L532-2 assume !(main_~length2~0 < 1); 797#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 798#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 810#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 811#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 794#L541-4 main_~i~1 := 0; 795#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 799#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 800#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 801#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 793#L519-4 [2020-11-29 22:01:48,680 INFO L796 eck$LassoCheckResult]: Loop: 793#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 796#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 809#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 805#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 806#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7; 790#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 791#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 792#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 793#L519-4 [2020-11-29 22:01:48,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:48,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1066016806, now seen corresponding path program 1 times [2020-11-29 22:01:48,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:48,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81019737] [2020-11-29 22:01:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:48,702 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:48,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:48,723 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:48,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:48,724 INFO L82 PathProgramCache]: Analyzing trace with hash -904885455, now seen corresponding path program 3 times [2020-11-29 22:01:48,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:48,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366305544] [2020-11-29 22:01:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:48,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:48,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:48,747 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:48,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1875279350, now seen corresponding path program 1 times [2020-11-29 22:01:48,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:48,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194737728] [2020-11-29 22:01:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:48,771 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:48,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:48,799 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:48,988 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-11-29 22:01:49,622 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2020-11-29 22:01:49,864 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-29 22:01:49,866 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:01:49,867 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:01:49,867 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:01:49,867 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:01:49,867 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:01:49,867 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:49,867 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:01:49,867 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:01:49,867 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration8_Lasso [2020-11-29 22:01:49,867 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:01:49,867 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:01:49,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:49,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:50,482 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2020-11-29 22:01:50,699 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-11-29 22:01:50,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:51,003 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-11-29 22:01:51,373 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-29 22:01:51,543 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2020-11-29 22:01:51,575 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:01:51,575 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,588 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:51,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,590 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,590 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:51,591 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,615 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:51,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,616 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:51,618 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,639 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:51,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,641 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,641 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,641 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,641 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:51,672 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:51,710 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:51,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,712 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,713 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,714 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:51,752 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,754 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,754 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,755 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:51,755 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:51,758 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:51,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,782 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,782 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:51,783 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:51,805 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:51,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,812 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:51,834 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:51,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,836 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,836 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,836 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,838 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,863 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:51,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:51,866 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:51,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:51,896 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,919 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:51,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:51,924 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:51,974 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:51,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:51,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:51,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:51,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:51,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:51,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:51,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:51,978 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,000 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,003 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:52,003 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:52,005 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,027 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,028 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:52,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,029 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:52,029 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:52,036 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,057 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:52,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,059 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:52,059 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:52,060 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,088 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:52,088 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:52,096 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,117 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:52,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:52,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:52,134 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,157 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,159 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:52,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,159 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:52,159 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:52,160 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,182 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:52,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,184 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:52,184 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:52,185 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,208 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,210 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,212 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:52,212 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:52,223 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,244 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,246 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:52,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,247 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:52,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:52,256 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:52,290 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,291 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,291 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:52,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,292 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,292 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:52,292 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:52,293 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,315 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:52,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,317 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,317 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:52,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:52,318 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,340 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,344 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:52,344 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:52,347 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,371 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,386 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:52,386 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:52,400 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,425 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:52,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:52,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:52,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:52,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:52,457 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:52,458 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:52,491 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:01:52,582 INFO L443 ModelExtractionUtils]: Simplification made 22 calls to the SMT solver. [2020-11-29 22:01:52,582 INFO L444 ModelExtractionUtils]: 31 out of 61 variables were initially zero. Simplification set additionally 27 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:52,601 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:01:52,604 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 22:01:52,604 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:01:52,604 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrspn_~sc1~0.base)_1, ULTIMATE.start_cstrspn_~sc1~0.offset) = 1*v_rep(select #length ULTIMATE.start_cstrspn_~sc1~0.base)_1 - 1*ULTIMATE.start_cstrspn_~sc1~0.offset Supporting invariants [] [2020-11-29 22:01:52,694 INFO L297 tatePredicateManager]: 17 out of 17 supporting invariants were superfluous and have been removed [2020-11-29 22:01:52,705 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 22:01:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:52,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:01:52,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:52,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:01:52,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:01:52,773 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:01:52,773 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-29 22:01:52,804 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 31 states and 40 transitions. Complement of second has 4 states. [2020-11-29 22:01:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 22:01:52,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:01:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2020-11-29 22:01:52,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 13 letters. Loop has 8 letters. [2020-11-29 22:01:52,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:52,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 21 letters. Loop has 8 letters. [2020-11-29 22:01:52,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:52,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 13 letters. Loop has 16 letters. [2020-11-29 22:01:52,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:52,807 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 40 transitions. [2020-11-29 22:01:52,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:01:52,808 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 35 transitions. [2020-11-29 22:01:52,808 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 22:01:52,808 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 22:01:52,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-11-29 22:01:52,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:01:52,808 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-29 22:01:52,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-11-29 22:01:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-29 22:01:52,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 22:01:52,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-29 22:01:52,810 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-29 22:01:52,810 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-29 22:01:52,810 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-29 22:01:52,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-29 22:01:52,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:01:52,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:52,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:52,812 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:52,812 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:01:52,812 INFO L794 eck$LassoCheckResult]: Stem: 1016#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1008#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 1009#L532 assume !(main_~length1~0 < 1); 1010#L532-2 assume !(main_~length2~0 < 1); 1003#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 1004#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 1019#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 1020#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 998#L541-4 main_~i~1 := 0; 999#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 1005#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 1006#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 1007#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 1000#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1001#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1017#L522-5 [2020-11-29 22:01:52,812 INFO L796 eck$LassoCheckResult]: Loop: 1017#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1011#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1012#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 1017#L522-5 [2020-11-29 22:01:52,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:52,812 INFO L82 PathProgramCache]: Analyzing trace with hash 2055034687, now seen corresponding path program 1 times [2020-11-29 22:01:52,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:52,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611334105] [2020-11-29 22:01:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:52,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:52,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:52,844 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:52,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:52,845 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 2 times [2020-11-29 22:01:52,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:52,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802150113] [2020-11-29 22:01:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:52,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:52,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:52,855 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:52,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:52,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1074579938, now seen corresponding path program 1 times [2020-11-29 22:01:52,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:52,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658516750] [2020-11-29 22:01:52,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:52,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:52,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:52,915 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:53,981 WARN L193 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 129 [2020-11-29 22:01:54,302 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-11-29 22:01:54,305 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:01:54,305 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:01:54,305 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:01:54,305 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:01:54,305 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:01:54,306 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:54,306 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:01:54,306 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:01:54,306 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration9_Lasso [2020-11-29 22:01:54,306 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:01:54,306 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:01:54,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:54,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:54,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:54,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:54,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:54,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:54,908 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 98 [2020-11-29 22:01:55,077 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-11-29 22:01:55,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:01:55,365 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-11-29 22:01:56,044 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-11-29 22:01:56,183 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:01:56,183 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:56,186 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:56,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:56,187 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:56,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:56,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:56,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:56,187 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:56,188 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:56,189 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:56,210 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:56,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:56,211 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:56,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:56,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:56,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:56,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:56,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:56,213 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:56,235 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:56,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:56,236 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:56,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:56,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:56,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:56,237 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:56,237 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:56,238 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:01:56,260 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:56,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:56,262 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:01:56,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:56,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:56,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:56,262 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:01:56,262 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:01:56,263 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:56,287 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:56,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:56,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:56,289 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:56,289 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:56,291 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:56,291 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:56,316 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:56,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:01:56,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:01:56,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:01:56,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:01:56,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:01:56,362 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:01:56,362 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:01:56,384 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:01:56,433 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2020-11-29 22:01:56,433 INFO L444 ModelExtractionUtils]: 22 out of 58 variables were initially zero. Simplification set additionally 33 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:01:56,436 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:01:56,438 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 22:01:56,438 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:01:56,438 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~nondetString2~0.base)_2, ULTIMATE.start_cstrspn_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_~nondetString2~0.base)_2 - 1*ULTIMATE.start_cstrspn_~s~0.offset Supporting invariants [] [2020-11-29 22:01:56,554 INFO L297 tatePredicateManager]: 25 out of 26 supporting invariants were superfluous and have been removed [2020-11-29 22:01:56,556 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 22:01:56,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:56,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:01:56,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:56,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:01:56,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:01:56,692 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 22:01:56,692 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-11-29 22:01:56,742 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 54 states and 67 transitions. Complement of second has 6 states. [2020-11-29 22:01:56,742 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 22:01:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 22:01:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2020-11-29 22:01:56,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-29 22:01:56,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:56,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-29 22:01:56,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:56,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 15 letters. Loop has 6 letters. [2020-11-29 22:01:56,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:01:56,744 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 67 transitions. [2020-11-29 22:01:56,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:01:56,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 40 states and 50 transitions. [2020-11-29 22:01:56,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-29 22:01:56,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-29 22:01:56,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 50 transitions. [2020-11-29 22:01:56,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:01:56,746 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-11-29 22:01:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 50 transitions. [2020-11-29 22:01:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2020-11-29 22:01:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 22:01:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-11-29 22:01:56,749 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-29 22:01:56,749 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-29 22:01:56,749 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-29 22:01:56,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-11-29 22:01:56,750 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:01:56,750 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:56,750 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:56,751 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:56,751 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:01:56,751 INFO L794 eck$LassoCheckResult]: Stem: 1284#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1277#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 1278#L532 assume !(main_~length1~0 < 1); 1279#L532-2 assume !(main_~length2~0 < 1); 1272#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 1273#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 1287#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 1288#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 1266#L541-4 main_~i~1 := 0; 1267#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 1274#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 1275#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 1276#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 1268#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1269#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1286#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1282#L522-1 assume !cstrspn_#t~short7; 1283#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7; 1262#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 1263#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 1264#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 1265#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1270#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1285#L522-5 [2020-11-29 22:01:56,751 INFO L796 eck$LassoCheckResult]: Loop: 1285#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1280#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1281#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 1285#L522-5 [2020-11-29 22:01:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:56,752 INFO L82 PathProgramCache]: Analyzing trace with hash -777149455, now seen corresponding path program 1 times [2020-11-29 22:01:56,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:56,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013390622] [2020-11-29 22:01:56,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 22:01:56,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013390622] [2020-11-29 22:01:56,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:01:56,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 22:01:56,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972087317] [2020-11-29 22:01:56,817 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:01:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:56,818 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 3 times [2020-11-29 22:01:56,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:56,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504367713] [2020-11-29 22:01:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:56,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:56,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:56,824 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:56,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:01:56,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:01:56,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:01:56,934 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 7 states. [2020-11-29 22:01:57,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:57,007 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-11-29 22:01:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:01:57,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2020-11-29 22:01:57,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:01:57,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 32 states and 39 transitions. [2020-11-29 22:01:57,009 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 22:01:57,009 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 22:01:57,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 39 transitions. [2020-11-29 22:01:57,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:01:57,009 INFO L691 BuchiCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-11-29 22:01:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 39 transitions. [2020-11-29 22:01:57,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-29 22:01:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 22:01:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-11-29 22:01:57,011 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-11-29 22:01:57,011 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-11-29 22:01:57,012 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-29 22:01:57,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 39 transitions. [2020-11-29 22:01:57,012 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:01:57,012 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:57,012 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:57,013 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:57,013 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:01:57,014 INFO L794 eck$LassoCheckResult]: Stem: 1369#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1362#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 1363#L532 assume !(main_~length1~0 < 1); 1364#L532-2 assume !(main_~length2~0 < 1); 1357#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 1358#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 1374#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 1375#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 1351#L541-4 main_~i~1 := 0; 1352#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 1359#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 1360#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 1361#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 1353#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1354#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1372#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1378#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1376#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7; 1347#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 1348#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 1349#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 1350#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1355#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1370#L522-5 [2020-11-29 22:01:57,014 INFO L796 eck$LassoCheckResult]: Loop: 1370#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1365#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1366#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 1370#L522-5 [2020-11-29 22:01:57,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:57,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1742810479, now seen corresponding path program 2 times [2020-11-29 22:01:57,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:57,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462969047] [2020-11-29 22:01:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:01:57,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462969047] [2020-11-29 22:01:57,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442758222] [2020-11-29 22:01:57,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:01:57,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:01:57,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:01:57,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-29 22:01:57,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:57,312 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-29 22:01:57,314 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:01:57,320 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:01:57,320 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:01:57,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-11-29 22:01:57,431 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 21 [2020-11-29 22:01:57,432 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:01:57,446 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:01:57,449 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-29 22:01:57,449 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:47, output treesize:31 [2020-11-29 22:01:57,667 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:01:57,667 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2020-11-29 22:01:57,671 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-29 22:01:57,690 INFO L625 ElimStorePlain]: treesize reduction 8, result has 63.6 percent of original size [2020-11-29 22:01:57,708 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:01:57,709 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2020-11-29 22:01:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:01:57,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:01:57,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-11-29 22:01:57,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193288619] [2020-11-29 22:01:57,714 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 22:01:57,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:57,715 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 4 times [2020-11-29 22:01:57,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:57,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60258146] [2020-11-29 22:01:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:57,720 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:57,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:57,724 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:57,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:01:57,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 22:01:57,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:01:57,863 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. cyclomatic complexity: 12 Second operand 15 states. [2020-11-29 22:01:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:58,389 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-11-29 22:01:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:01:58,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 62 transitions. [2020-11-29 22:01:58,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:01:58,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 35 states and 42 transitions. [2020-11-29 22:01:58,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 22:01:58,390 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 22:01:58,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 42 transitions. [2020-11-29 22:01:58,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:01:58,390 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-11-29 22:01:58,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 42 transitions. [2020-11-29 22:01:58,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-11-29 22:01:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-29 22:01:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-11-29 22:01:58,392 INFO L714 BuchiCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-11-29 22:01:58,392 INFO L594 BuchiCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-11-29 22:01:58,392 INFO L427 BuchiCegarLoop]: ======== Iteration 12============ [2020-11-29 22:01:58,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 41 transitions. [2020-11-29 22:01:58,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:01:58,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:01:58,393 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:01:58,394 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:58,394 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:01:58,394 INFO L794 eck$LassoCheckResult]: Stem: 1550#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1543#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 1544#L532 assume !(main_~length1~0 < 1); 1545#L532-2 assume !(main_~length2~0 < 1); 1538#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 1539#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 1555#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 1556#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 1558#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 1560#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 1532#L541-4 main_~i~1 := 0; 1533#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 1540#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 1541#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 1542#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 1534#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1535#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1553#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1548#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1549#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7; 1528#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 1529#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 1530#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 1531#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 1536#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 1551#L522-5 [2020-11-29 22:01:58,394 INFO L796 eck$LassoCheckResult]: Loop: 1551#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 1546#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 1547#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 1551#L522-5 [2020-11-29 22:01:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1365761455, now seen corresponding path program 3 times [2020-11-29 22:01:58,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:58,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979161155] [2020-11-29 22:01:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:58,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:58,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:58,435 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:58,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:58,436 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 5 times [2020-11-29 22:01:58,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:58,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955950385] [2020-11-29 22:01:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:58,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:58,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:58,444 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:01:58,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:58,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1174254192, now seen corresponding path program 1 times [2020-11-29 22:01:58,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:58,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949270376] [2020-11-29 22:01:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:58,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:01:58,482 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:01:58,487 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:02:00,398 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 228 DAG size of output: 177 [2020-11-29 22:02:07,470 WARN L193 SmtUtils]: Spent 7.05 s on a formula simplification. DAG size of input: 152 DAG size of output: 152 [2020-11-29 22:02:07,474 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:02:07,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:02:07,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:02:07,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:02:07,474 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:02:07,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:07,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:02:07,475 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:02:07,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration12_Lasso [2020-11-29 22:02:07,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:02:07,475 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:02:07,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:07,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:07,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:07,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:07,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:08,126 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2020-11-29 22:02:09,338 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 133 DAG size of output: 114 [2020-11-29 22:02:09,532 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-11-29 22:02:09,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:09,804 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-29 22:02:10,170 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2020-11-29 22:02:10,389 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2020-11-29 22:02:11,208 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2020-11-29 22:02:11,523 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-11-29 22:02:11,713 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:02:11,713 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:11,725 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:11,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:11,727 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:11,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:11,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:11,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:11,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:11,728 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:11,729 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:11,750 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:11,751 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:11,751 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:11,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:11,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:11,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:11,752 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:11,752 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:11,753 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:11,774 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:11,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:11,776 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:11,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:11,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:11,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:11,776 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:11,776 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:11,777 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:11,798 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:11,800 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:11,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:11,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:11,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:11,801 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:02:11,801 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:02:11,803 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:11,824 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:11,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:11,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:11,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:11,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:11,827 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:02:11,827 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:02:11,829 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:11,850 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:11,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:11,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:11,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:11,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:11,872 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:02:11,872 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:02:11,890 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:02:11,939 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2020-11-29 22:02:11,939 INFO L444 ModelExtractionUtils]: 26 out of 55 variables were initially zero. Simplification set additionally 24 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:02:11,948 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:11,950 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-29 22:02:11,950 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:02:11,950 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5, ULTIMATE.start_cstrspn_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5 - 1*ULTIMATE.start_cstrspn_~s~0.offset Supporting invariants [-1*v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_5 + 1*v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_3 >= 0] [2020-11-29 22:02:12,179 INFO L297 tatePredicateManager]: 33 out of 36 supporting invariants were superfluous and have been removed [2020-11-29 22:02:12,189 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 22:02:12,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:02:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:12,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 22:02:12,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:12,274 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:02:12,274 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-29 22:02:12,275 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:02:12,305 INFO L625 ElimStorePlain]: treesize reduction 10, result has 73.7 percent of original size [2020-11-29 22:02:12,306 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:02:12,306 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:28 [2020-11-29 22:02:12,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:02:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:12,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:02:12,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:02:12,594 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.8 stem predicates 2 loop predicates [2020-11-29 22:02:12,594 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12 Second operand 10 states. [2020-11-29 22:02:13,291 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12. Second operand 10 states. Result 62 states and 73 transitions. Complement of second has 13 states. [2020-11-29 22:02:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 8 stem states 1 non-accepting loop states 2 accepting loop states [2020-11-29 22:02:13,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 22:02:13,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 36 transitions. [2020-11-29 22:02:13,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 36 transitions. Stem has 25 letters. Loop has 3 letters. [2020-11-29 22:02:13,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:02:13,293 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:02:13,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:02:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:13,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 22:02:13,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:13,378 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:02:13,378 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-29 22:02:13,378 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:02:13,410 INFO L625 ElimStorePlain]: treesize reduction 10, result has 73.7 percent of original size [2020-11-29 22:02:13,410 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:02:13,410 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:28 [2020-11-29 22:02:13,594 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:02:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:13,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:02:13,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:02:13,689 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.8 stem predicates 2 loop predicates [2020-11-29 22:02:13,689 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12 Second operand 10 states. [2020-11-29 22:02:14,236 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12. Second operand 10 states. Result 62 states and 73 transitions. Complement of second has 13 states. [2020-11-29 22:02:14,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 8 stem states 1 non-accepting loop states 2 accepting loop states [2020-11-29 22:02:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 22:02:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 36 transitions. [2020-11-29 22:02:14,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 36 transitions. Stem has 25 letters. Loop has 3 letters. [2020-11-29 22:02:14,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:02:14,238 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:02:14,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:02:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:14,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 22:02:14,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:14,345 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:02:14,345 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-11-29 22:02:14,346 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 22:02:14,378 INFO L625 ElimStorePlain]: treesize reduction 10, result has 73.7 percent of original size [2020-11-29 22:02:14,378 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 22:02:14,379 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:28 [2020-11-29 22:02:14,668 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:02:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:14,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:02:14,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:02:14,766 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.8 stem predicates 2 loop predicates [2020-11-29 22:02:14,767 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12 Second operand 10 states. [2020-11-29 22:02:15,362 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 41 transitions. cyclomatic complexity: 12. Second operand 10 states. Result 76 states and 90 transitions. Complement of second has 12 states. [2020-11-29 22:02:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 8 stem states 1 non-accepting loop states 2 accepting loop states [2020-11-29 22:02:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 22:02:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 52 transitions. [2020-11-29 22:02:15,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 25 letters. Loop has 3 letters. [2020-11-29 22:02:15,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:02:15,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 28 letters. Loop has 3 letters. [2020-11-29 22:02:15,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:02:15,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 25 letters. Loop has 6 letters. [2020-11-29 22:02:15,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:02:15,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 90 transitions. [2020-11-29 22:02:15,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:02:15,366 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 41 states and 49 transitions. [2020-11-29 22:02:15,366 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-29 22:02:15,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-29 22:02:15,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 49 transitions. [2020-11-29 22:02:15,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:02:15,366 INFO L691 BuchiCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-11-29 22:02:15,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 49 transitions. [2020-11-29 22:02:15,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-11-29 22:02:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 22:02:15,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-11-29 22:02:15,369 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-11-29 22:02:15,369 INFO L594 BuchiCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-11-29 22:02:15,369 INFO L427 BuchiCegarLoop]: ======== Iteration 13============ [2020-11-29 22:02:15,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 43 transitions. [2020-11-29 22:02:15,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:02:15,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:02:15,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:02:15,370 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:02:15,370 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:02:15,370 INFO L794 eck$LassoCheckResult]: Stem: 2315#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2307#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 2308#L532 assume !(main_~length1~0 < 1); 2309#L532-2 assume !(main_~length2~0 < 1); 2302#L535-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 2303#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 2323#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 2324#L541-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 2319#L541-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 2320#L541-3 assume !(main_~i~0 < main_~length1~0 - 1); 2296#L541-4 main_~i~1 := 0; 2297#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 2304#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 2305#L546-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 2306#L546-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 2326#L546-3 assume !(main_~i~1 < main_~length2~0 - 1); 2314#L546-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~mem4, cstrspn_#t~post8.base, cstrspn_#t~post8.offset, cstrspn_#t~mem5, cstrspn_#t~mem6, cstrspn_#t~short7, cstrspn_#t~mem9, cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, cstrspn_~s~0.base, cstrspn_~s~0.offset, cstrspn_~c~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;havoc cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;havoc cstrspn_~s~0.base, cstrspn_~s~0.offset;havoc cstrspn_~c~0;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset; 2298#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 2299#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 2318#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 2312#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 2313#L522-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7; 2292#L522-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 2293#L524 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 2294#L519-3 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset;cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset; 2295#L519-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 2300#L519-1 assume !!(0 != cstrspn_#t~mem3);havoc cstrspn_#t~mem3;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset;call cstrspn_#t~mem4 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem4;havoc cstrspn_#t~mem4; 2316#L522-5 [2020-11-29 22:02:15,370 INFO L796 eck$LassoCheckResult]: Loop: 2316#L522-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 2310#L522-1 assume cstrspn_#t~short7;call cstrspn_#t~mem6 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := cstrspn_#t~mem6 != (if cstrspn_~c~0 % 256 <= 127 then cstrspn_~c~0 % 256 else cstrspn_~c~0 % 256 - 256); 2311#L522-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;havoc cstrspn_#t~short7;cstrspn_#t~post8.base, cstrspn_#t~post8.offset := cstrspn_~s~0.base, cstrspn_~s~0.offset;cstrspn_~s~0.base, cstrspn_~s~0.offset := cstrspn_#t~post8.base, 1 + cstrspn_#t~post8.offset;havoc cstrspn_#t~post8.base, cstrspn_#t~post8.offset; 2316#L522-5 [2020-11-29 22:02:15,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:02:15,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2023300851, now seen corresponding path program 4 times [2020-11-29 22:02:15,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:02:15,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156382973] [2020-11-29 22:02:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:02:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:02:15,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:02:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:02:15,402 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:02:15,406 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:02:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:02:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash 86496, now seen corresponding path program 6 times [2020-11-29 22:02:15,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:02:15,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818959431] [2020-11-29 22:02:15,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:02:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:02:15,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:02:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:02:15,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:02:15,414 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:02:15,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:02:15,414 INFO L82 PathProgramCache]: Analyzing trace with hash 584676782, now seen corresponding path program 2 times [2020-11-29 22:02:15,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:02:15,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441208505] [2020-11-29 22:02:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:02:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:02:15,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:02:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:02:15,445 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:02:15,449 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:02:17,841 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 242 DAG size of output: 182 [2020-11-29 22:02:23,443 WARN L193 SmtUtils]: Spent 5.58 s on a formula simplification. DAG size of input: 148 DAG size of output: 148 [2020-11-29 22:02:23,446 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:02:23,446 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:02:23,446 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:02:23,447 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:02:23,447 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:02:23,447 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:23,447 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:02:23,447 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:02:23,447 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn-alloca-1.i_Iteration13_Lasso [2020-11-29 22:02:23,447 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:02:23,447 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:02:23,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:23,979 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-29 22:02:24,995 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 115 DAG size of output: 102 [2020-11-29 22:02:25,152 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-11-29 22:02:25,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:02:25,452 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-11-29 22:02:25,600 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-11-29 22:02:26,358 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-11-29 22:02:26,557 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-11-29 22:02:26,691 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:02:26,691 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,694 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,697 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:02:26,697 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:02:26,701 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,722 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,723 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:26,723 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,723 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,723 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,724 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:26,724 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:26,725 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 69 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 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,746 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,748 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:26,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:26,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:26,749 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 70 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,771 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:26,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,773 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:26,773 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:26,774 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,794 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,796 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,796 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,797 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:02:26,797 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:02:26,799 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 72 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 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,821 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:26,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,822 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:26,822 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:26,824 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,844 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,846 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:26,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,846 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,846 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:26,846 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:26,847 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 74 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 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,868 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,869 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:26,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,870 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,870 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:26,870 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:26,871 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 75 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 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,893 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,895 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,896 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:02:26,896 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:02:26,898 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 76 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 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,919 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:26,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:26,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:26,922 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 77 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 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,960 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,962 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:26,962 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,962 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,962 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:26,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:26,963 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 78 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 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:26,992 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:26,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:26,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:26,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:26,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:26,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:26,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:26,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:26,995 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 79 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 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:27,016 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:27,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:27,018 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:02:27,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:27,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:27,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:27,018 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:02:27,018 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:02:27,019 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 80 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 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:27,041 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:02:27,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:02:27,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:02:27,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:02:27,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:02:27,056 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:02:27,056 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:02:27,072 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:02:27,089 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-11-29 22:02:27,089 INFO L444 ModelExtractionUtils]: 30 out of 55 variables were initially zero. Simplification set additionally 22 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22d78483-2edf-4517-a739-e90fa62a1f26/bin/uautomizer/z3 Starting monitored process 81 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 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:02:27,091 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:02:27,093 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 22:02:27,093 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:02:27,093 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_6, ULTIMATE.start_cstrspn_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_6 - 1*ULTIMATE.start_cstrspn_~s~0.offset Supporting invariants [] [2020-11-29 22:02:27,255 INFO L297 tatePredicateManager]: 27 out of 28 supporting invariants were superfluous and have been removed [2020-11-29 22:02:27,257 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 22:02:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:02:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:27,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:02:27,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:27,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:02:27,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:02:27,385 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2020-11-29 22:02:27,385 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 43 transitions. cyclomatic complexity: 12 Second operand 5 states. [2020-11-29 22:02:27,452 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 43 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 52 states and 60 transitions. Complement of second has 7 states. [2020-11-29 22:02:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 22:02:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 22:02:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2020-11-29 22:02:27,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 27 letters. Loop has 3 letters. [2020-11-29 22:02:27,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:02:27,453 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:02:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:02:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:27,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:02:27,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:27,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:02:27,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:02:27,585 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.3 stem predicates 2 loop predicates [2020-11-29 22:02:27,586 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 43 transitions. cyclomatic complexity: 12 Second operand 5 states. [2020-11-29 22:02:27,660 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 43 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 52 states and 60 transitions. Complement of second has 7 states. [2020-11-29 22:02:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 22:02:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 22:02:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2020-11-29 22:02:27,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 27 letters. Loop has 3 letters. [2020-11-29 22:02:27,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:02:27,661 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:02:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:02:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:27,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:02:27,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:02:27,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:02:27,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:02:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:02:27,801 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2020-11-29 22:02:27,802 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 43 transitions. cyclomatic complexity: 12 Second operand 5 states. [2020-11-29 22:02:27,865 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 43 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 51 states and 60 transitions. Complement of second has 6 states. [2020-11-29 22:02:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 22:02:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 22:02:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2020-11-29 22:02:27,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 27 letters. Loop has 3 letters. [2020-11-29 22:02:27,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:02:27,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 30 letters. Loop has 3 letters. [2020-11-29 22:02:27,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:02:27,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 27 letters. Loop has 6 letters. [2020-11-29 22:02:27,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:02:27,867 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2020-11-29 22:02:27,867 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:02:27,867 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 0 states and 0 transitions. [2020-11-29 22:02:27,867 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:02:27,867 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:02:27,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:02:27,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:02:27,868 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:02:27,868 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:02:27,868 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:02:27,868 INFO L427 BuchiCegarLoop]: ======== Iteration 14============ [2020-11-29 22:02:27,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:02:27,868 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:02:27,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 22:02:27,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:02:27 BoogieIcfgContainer [2020-11-29 22:02:27,872 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:02:27,873 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:02:27,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:02:27,873 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:02:27,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:01:40" (3/4) ... [2020-11-29 22:02:27,876 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:02:27,876 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:02:27,876 INFO L168 Benchmark]: Toolchain (without parser) took 48248.81 ms. Allocated memory was 90.2 MB in the beginning and 308.3 MB in the end (delta: 218.1 MB). Free memory was 54.7 MB in the beginning and 149.1 MB in the end (delta: -94.4 MB). Peak memory consumption was 123.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:27,877 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory was 71.9 MB in the beginning and 71.9 MB in the end (delta: 69.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:02:27,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.37 ms. Allocated memory is still 90.2 MB. Free memory was 54.5 MB in the beginning and 56.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:27,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.23 ms. Allocated memory is still 90.2 MB. Free memory was 56.4 MB in the beginning and 54.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:27,878 INFO L168 Benchmark]: Boogie Preprocessor took 31.17 ms. Allocated memory is still 90.2 MB. Free memory was 54.4 MB in the beginning and 52.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:27,878 INFO L168 Benchmark]: RCFGBuilder took 527.41 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 52.9 MB in the beginning and 99.3 MB in the end (delta: -46.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:27,879 INFO L168 Benchmark]: BuchiAutomizer took 47092.39 ms. Allocated memory was 121.6 MB in the beginning and 308.3 MB in the end (delta: 186.6 MB). Free memory was 99.3 MB in the beginning and 149.1 MB in the end (delta: -49.8 MB). Peak memory consumption was 136.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:02:27,879 INFO L168 Benchmark]: Witness Printer took 3.23 ms. Allocated memory is still 308.3 MB. Free memory is still 149.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:02:27,881 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 90.2 MB. Free memory was 71.9 MB in the beginning and 71.9 MB in the end (delta: 69.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 539.37 ms. Allocated memory is still 90.2 MB. Free memory was 54.5 MB in the beginning and 56.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.23 ms. Allocated memory is still 90.2 MB. Free memory was 56.4 MB in the beginning and 54.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.17 ms. Allocated memory is still 90.2 MB. Free memory was 54.4 MB in the beginning and 52.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 527.41 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 52.9 MB in the beginning and 99.3 MB in the end (delta: -46.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 47092.39 ms. Allocated memory was 121.6 MB in the beginning and 308.3 MB in the end (delta: 186.6 MB). Free memory was 99.3 MB in the beginning and 149.1 MB in the end (delta: -49.8 MB). Peak memory consumption was 136.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.23 ms. Allocated memory is still 308.3 MB. Free memory is still 149.1 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 - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (7 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * i + unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[sc1] + -1 * sc1 and consists of 3 locations. One deterministic module has affine ranking function unknown-#length-unknown[nondetString2] + -1 * s and consists of 4 locations. One nondeterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] + -1 * s and consists of 11 locations. One nondeterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] + -1 * s and consists of 5 locations. 7 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 47.0s and 14 iterations. TraceHistogramMax:2. Analysis of lassos took 40.7s. Construction of modules took 1.1s. Büchi inclusion checks took 4.8s. Highest rank in rank-based complementation 3. Minimization of det autom 8. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 36 states and ocurred in iteration 12. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 297 SDtfs, 800 SDslu, 675 SDs, 0 SdLazy, 901 SolverSat, 145 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc3 concLT0 SILN0 SILU3 SILI1 SILT0 lasso6 LassoPreprocessingBenchmarks: Lassos: inital462 mio100 ax106 hnf98 lsp128 ukn54 mio100 lsp50 div108 bol100 ite100 ukn100 eq176 hnf86 smp85 dnf544 smp52 tf100 neg98 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 2 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...