./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrspn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrspn.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 64bit --witnessprinter.graph.data.programhash 0c74f0cc26425c1a044a70e86941b5dd82b132ff .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:22:02,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:22:02,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:22:02,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:22:02,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:22:02,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:22:02,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:22:02,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:22:02,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:22:02,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:22:02,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:22:02,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:22:02,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:22:02,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:22:02,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:22:02,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:22:02,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:22:02,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:22:02,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:22:02,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:22:02,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:22:02,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:22:02,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:22:02,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:22:02,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:22:02,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:22:02,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:22:02,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:22:02,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:22:02,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:22:02,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:22:02,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:22:02,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:22:02,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:22:02,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:22:02,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:22:02,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:22:02,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:22:02,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:22:02,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:22:02,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:22:02,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 17:22:02,336 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:22:02,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:22:02,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:22:02,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:22:02,337 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:22:02,337 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 17:22:02,337 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 17:22:02,337 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 17:22:02,338 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 17:22:02,338 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 17:22:02,338 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 17:22:02,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:22:02,338 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:22:02,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:22:02,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:22:02,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 17:22:02,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 17:22:02,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 17:22:02,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:22:02,339 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 17:22:02,339 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:22:02,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 17:22:02,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:22:02,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:22:02,340 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 17:22:02,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:22:02,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:22:02,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:22:02,340 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 17:22:02,341 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 17:22:02,341 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_fa7719ff-128b-4739-bd40-d2a9c2907110/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c74f0cc26425c1a044a70e86941b5dd82b132ff [2019-12-07 17:22:02,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:22:02,451 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:22:02,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:22:02,454 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:22:02,455 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:22:02,455 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/cstrspn.c [2019-12-07 17:22:02,492 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/data/0575efc76/b7032375895d4d6486f9a36fd799ba33/FLAGeff0c23e9 [2019-12-07 17:22:02,937 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:22:02,937 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/sv-benchmarks/c/termination-crafted-lit/cstrspn.c [2019-12-07 17:22:02,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/data/0575efc76/b7032375895d4d6486f9a36fd799ba33/FLAGeff0c23e9 [2019-12-07 17:22:02,950 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/data/0575efc76/b7032375895d4d6486f9a36fd799ba33 [2019-12-07 17:22:02,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:22:02,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:22:02,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:22:02,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:22:02,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:22:02,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:22:02" (1/1) ... [2019-12-07 17:22:02,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7661a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:02, skipping insertion in model container [2019-12-07 17:22:02,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:22:02" (1/1) ... [2019-12-07 17:22:02,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:22:02,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:22:03,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:22:03,121 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:22:03,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:22:03,145 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:22:03,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03 WrapperNode [2019-12-07 17:22:03,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:22:03,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:22:03,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:22:03,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:22:03,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (1/1) ... [2019-12-07 17:22:03,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (1/1) ... [2019-12-07 17:22:03,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:22:03,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:22:03,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:22:03,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:22:03,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (1/1) ... [2019-12-07 17:22:03,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (1/1) ... [2019-12-07 17:22:03,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (1/1) ... [2019-12-07 17:22:03,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (1/1) ... [2019-12-07 17:22:03,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (1/1) ... [2019-12-07 17:22:03,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (1/1) ... [2019-12-07 17:22:03,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (1/1) ... [2019-12-07 17:22:03,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:22:03,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:22:03,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:22:03,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:22:03,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:22:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 17:22:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:22:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:22:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:22:03,393 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:22:03,393 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 17:22:03,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:22:03 BoogieIcfgContainer [2019-12-07 17:22:03,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:22:03,394 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 17:22:03,394 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 17:22:03,396 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 17:22:03,397 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:22:03,397 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 05:22:02" (1/3) ... [2019-12-07 17:22:03,398 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d0fb1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:22:03, skipping insertion in model container [2019-12-07 17:22:03,398 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:22:03,398 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:03" (2/3) ... [2019-12-07 17:22:03,398 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d0fb1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:22:03, skipping insertion in model container [2019-12-07 17:22:03,398 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:22:03,398 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:22:03" (3/3) ... [2019-12-07 17:22:03,399 INFO L371 chiAutomizerObserver]: Analyzing ICFG cstrspn.c [2019-12-07 17:22:03,426 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 17:22:03,426 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 17:22:03,427 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 17:22:03,427 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:22:03,427 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:22:03,427 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 17:22:03,427 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:22:03,427 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 17:22:03,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-12-07 17:22:03,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 17:22:03,451 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:03,451 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:03,455 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:22:03,455 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-12-07 17:22:03,455 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 17:22:03,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-12-07 17:22:03,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 17:22:03,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:03,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:03,458 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:22:03,458 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-12-07 17:22:03,463 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 13#L-1true havoc main_#res;havoc main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.offset, main_#t~ret12;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 22#L14true assume !(build_nondet_String_~length~0 < 1); 19#L14-2true call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 10#L19true main_#t~ret10.base, main_#t~ret10.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 16#L14-3true assume build_nondet_String_~length~0 < 1;build_nondet_String_~length~0 := 1; 12#L14-5true call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 8#L19-1true main_#t~ret11.base, main_#t~ret11.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.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; 4#L31-4true [2019-12-07 17:22:03,463 INFO L796 eck$LassoCheckResult]: Loop: 4#L31-4true call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 11#L31-1true 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; 9#L34-5true assume !true; 5#L34-6true call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 23#L36true assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 6#L31-3true 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; 4#L31-4true [2019-12-07 17:22:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:03,467 INFO L82 PathProgramCache]: Analyzing trace with hash 176610378, now seen corresponding path program 1 times [2019-12-07 17:22:03,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:03,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065716039] [2019-12-07 17:22:03,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:03,586 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:03,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:03,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1602834410, now seen corresponding path program 1 times [2019-12-07 17:22:03,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:03,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192786446] [2019-12-07 17:22:03,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:22:03,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192786446] [2019-12-07 17:22:03,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:22:03,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:22:03,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212618093] [2019-12-07 17:22:03,613 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 17:22:03,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:22:03,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:22:03,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:22:03,625 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-12-07 17:22:03,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:22:03,629 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2019-12-07 17:22:03,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:22:03,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2019-12-07 17:22:03,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 17:22:03,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 16 states and 20 transitions. [2019-12-07 17:22:03,635 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-12-07 17:22:03,635 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-12-07 17:22:03,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2019-12-07 17:22:03,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:22:03,636 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-12-07 17:22:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2019-12-07 17:22:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 17:22:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 17:22:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-12-07 17:22:03,654 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-12-07 17:22:03,654 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-12-07 17:22:03,654 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 17:22:03,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 20 transitions. [2019-12-07 17:22:03,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 17:22:03,655 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:03,655 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:03,655 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:22:03,655 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:22:03,655 INFO L794 eck$LassoCheckResult]: Stem: 64#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 62#L-1 havoc main_#res;havoc main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.offset, main_#t~ret12;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 63#L14 assume !(build_nondet_String_~length~0 < 1); 65#L14-2 call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 58#L19 main_#t~ret10.base, main_#t~ret10.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 59#L14-3 assume build_nondet_String_~length~0 < 1;build_nondet_String_~length~0 := 1; 60#L14-5 call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 55#L19-1 main_#t~ret11.base, main_#t~ret11.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.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; 50#L31-4 [2019-12-07 17:22:03,656 INFO L796 eck$LassoCheckResult]: Loop: 50#L31-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 51#L31-1 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; 56#L34-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 57#L34-1 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); 61#L34-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6; 52#L34-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 53#L36 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 54#L31-3 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; 50#L31-4 [2019-12-07 17:22:03,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:03,656 INFO L82 PathProgramCache]: Analyzing trace with hash 176610378, now seen corresponding path program 2 times [2019-12-07 17:22:03,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:03,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102461156] [2019-12-07 17:22:03,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:03,689 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:03,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:03,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1952985167, now seen corresponding path program 1 times [2019-12-07 17:22:03,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:03,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540028084] [2019-12-07 17:22:03,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:03,708 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:03,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:03,709 INFO L82 PathProgramCache]: Analyzing trace with hash -955886854, now seen corresponding path program 1 times [2019-12-07 17:22:03,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:03,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096600942] [2019-12-07 17:22:03,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:22:03,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096600942] [2019-12-07 17:22:03,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:22:03,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 17:22:03,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610464321] [2019-12-07 17:22:03,947 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-12-07 17:22:04,100 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-12-07 17:22:04,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:22:04,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:22:04,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:22:04,101 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. cyclomatic complexity: 5 Second operand 7 states. [2019-12-07 17:22:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:22:04,217 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-12-07 17:22:04,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:22:04,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 35 transitions. [2019-12-07 17:22:04,219 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2019-12-07 17:22:04,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 31 states and 35 transitions. [2019-12-07 17:22:04,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-12-07 17:22:04,220 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2019-12-07 17:22:04,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 35 transitions. [2019-12-07 17:22:04,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:22:04,220 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-12-07 17:22:04,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 35 transitions. [2019-12-07 17:22:04,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2019-12-07 17:22:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 17:22:04,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-12-07 17:22:04,222 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-12-07 17:22:04,222 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-12-07 17:22:04,222 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 17:22:04,222 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 31 transitions. [2019-12-07 17:22:04,223 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2019-12-07 17:22:04,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:04,223 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:04,224 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:22:04,224 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:22:04,224 INFO L794 eck$LassoCheckResult]: Stem: 134#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 131#L-1 havoc main_#res;havoc main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.offset, main_#t~ret12;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 132#L14 assume !(build_nondet_String_~length~0 < 1); 137#L14-2 call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 126#L19 main_#t~ret10.base, main_#t~ret10.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 127#L14-3 assume !(build_nondet_String_~length~0 < 1); 129#L14-5 call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 130#L19-1 main_#t~ret11.base, main_#t~ret11.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.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; 142#L31-4 [2019-12-07 17:22:04,224 INFO L796 eck$LassoCheckResult]: Loop: 142#L31-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 141#L31-1 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; 124#L34-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 125#L34-1 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); 138#L34-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6; 139#L34-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 144#L36 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 143#L31-3 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; 142#L31-4 [2019-12-07 17:22:04,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:04,224 INFO L82 PathProgramCache]: Analyzing trace with hash 176612300, now seen corresponding path program 1 times [2019-12-07 17:22:04,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:04,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627141205] [2019-12-07 17:22:04,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:04,245 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:04,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:04,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1952985167, now seen corresponding path program 2 times [2019-12-07 17:22:04,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:04,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889682014] [2019-12-07 17:22:04,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:04,258 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:04,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:04,258 INFO L82 PathProgramCache]: Analyzing trace with hash -254822276, now seen corresponding path program 1 times [2019-12-07 17:22:04,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:04,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375540649] [2019-12-07 17:22:04,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:04,292 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:04,532 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-12-07 17:22:04,798 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2019-12-07 17:22:04,898 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:22:04,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:22:04,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:22:04,898 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:22:04,899 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:22:04,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:04,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:22:04,899 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:22:04,899 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn.c_Iteration3_Lasso [2019-12-07 17:22:04,899 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:22:04,899 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:22:04,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:04,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:04,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,105 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-12-07 17:22:05,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:05,743 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-12-07 17:22:05,797 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:22:05,802 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:05,806 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:22:05,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:05,808 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:05,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:05,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:05,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:05,810 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:05,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:05,812 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:05,817 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 [2019-12-07 17:22:05,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:05,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:05,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:05,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:05,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:05,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:05,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:05,820 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:05,824 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 [2019-12-07 17:22:05,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:05,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:05,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:05,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:05,833 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:05,833 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:05,842 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:22:05,865 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2019-12-07 17:22:05,865 INFO L444 ModelExtractionUtils]: 5 out of 22 variables were initially zero. Simplification set additionally 14 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:05,871 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:22:05,877 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 17:22:05,877 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:22:05,878 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~ret10.base)_1, ULTIMATE.start_cstrspn_~sc1~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~ret10.base)_1 - 1*ULTIMATE.start_cstrspn_~sc1~0.offset Supporting invariants [] [2019-12-07 17:22:05,903 INFO L297 tatePredicateManager]: 6 out of 7 supporting invariants were superfluous and have been removed [2019-12-07 17:22:05,909 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 17:22:05,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:05,946 INFO L264 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:22:05,947 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:05,959 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:22:05,959 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:22:05,973 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 [2019-12-07 17:22:05,974 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 31 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-12-07 17:22:06,014 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 31 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 44 states and 52 transitions. Complement of second has 4 states. [2019-12-07 17:22:06,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:22:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:22:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2019-12-07 17:22:06,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 8 letters. Loop has 8 letters. [2019-12-07 17:22:06,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:06,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 16 letters. Loop has 8 letters. [2019-12-07 17:22:06,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:06,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 8 letters. Loop has 16 letters. [2019-12-07 17:22:06,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:06,018 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 52 transitions. [2019-12-07 17:22:06,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:22:06,019 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 22 states and 27 transitions. [2019-12-07 17:22:06,019 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-12-07 17:22:06,020 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-12-07 17:22:06,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 27 transitions. [2019-12-07 17:22:06,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:22:06,020 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-12-07 17:22:06,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 27 transitions. [2019-12-07 17:22:06,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 17:22:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 17:22:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-12-07 17:22:06,022 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-12-07 17:22:06,022 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-12-07 17:22:06,022 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 17:22:06,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2019-12-07 17:22:06,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:22:06,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:06,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:06,023 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:22:06,023 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:22:06,023 INFO L794 eck$LassoCheckResult]: Stem: 309#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 307#L-1 havoc main_#res;havoc main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.offset, main_#t~ret12;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 308#L14 assume !(build_nondet_String_~length~0 < 1); 311#L14-2 call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 302#L19 main_#t~ret10.base, main_#t~ret10.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 303#L14-3 assume !(build_nondet_String_~length~0 < 1); 304#L14-5 call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 297#L19-1 main_#t~ret11.base, main_#t~ret11.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.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; 290#L31-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 292#L31-1 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; 298#L34-5 [2019-12-07 17:22:06,023 INFO L796 eck$LassoCheckResult]: Loop: 298#L34-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 299#L34-1 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); 305#L34-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;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; 298#L34-5 [2019-12-07 17:22:06,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:06,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2074270767, now seen corresponding path program 1 times [2019-12-07 17:22:06,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:06,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193211653] [2019-12-07 17:22:06,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:06,043 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:06,043 INFO L82 PathProgramCache]: Analyzing trace with hash 63657, now seen corresponding path program 1 times [2019-12-07 17:22:06,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:06,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725270608] [2019-12-07 17:22:06,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:06,050 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:06,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1389069017, now seen corresponding path program 1 times [2019-12-07 17:22:06,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:06,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619967886] [2019-12-07 17:22:06,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:06,076 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:06,502 WARN L192 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 124 [2019-12-07 17:22:06,607 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2019-12-07 17:22:06,609 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:22:06,609 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:22:06,609 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:22:06,610 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:22:06,610 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:22:06,610 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:06,610 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:22:06,610 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:22:06,610 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn.c_Iteration4_Lasso [2019-12-07 17:22:06,610 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:22:06,610 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:22:06,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:06,860 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2019-12-07 17:22:07,292 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-12-07 17:22:07,653 WARN L192 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-12-07 17:22:07,668 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:22:07,668 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,671 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 [2019-12-07 17:22:07,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,673 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,674 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,675 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,680 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 [2019-12-07 17:22:07,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,684 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,689 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 [2019-12-07 17:22:07,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,690 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,691 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,691 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,692 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:07,697 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 [2019-12-07 17:22:07,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,698 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,699 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,699 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,700 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:07,705 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 [2019-12-07 17:22:07,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,706 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,706 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,706 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,708 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:07,713 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 [2019-12-07 17:22:07,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,715 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:07,715 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:07,718 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:07,723 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 [2019-12-07 17:22:07,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,724 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,725 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:07,731 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 [2019-12-07 17:22:07,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,732 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,734 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:07,738 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 [2019-12-07 17:22:07,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,740 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,742 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:07,750 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 [2019-12-07 17:22:07,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,752 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,752 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,754 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:07,759 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 [2019-12-07 17:22:07,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,760 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,761 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,761 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,762 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,767 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 [2019-12-07 17:22:07,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,770 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:07,770 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:07,773 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,778 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:22:07,779 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,779 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,780 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,781 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,786 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 [2019-12-07 17:22:07,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,789 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,794 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 [2019-12-07 17:22:07,795 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,796 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,796 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,796 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,798 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,802 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 [2019-12-07 17:22:07,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:07,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,804 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:07,805 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:07,806 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,810 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 [2019-12-07 17:22:07,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,814 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:07,814 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:07,817 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:07,825 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 [2019-12-07 17:22:07,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,829 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:07,829 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:07,833 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:07,837 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 [2019-12-07 17:22:07,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,839 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:07,839 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:07,842 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,845 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 [2019-12-07 17:22:07,846 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,848 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:07,848 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:07,850 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,854 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 [2019-12-07 17:22:07,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,855 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-12-07 17:22:07,855 INFO L204 nArgumentSynthesizer]: 6 loop disjuncts [2019-12-07 17:22:07,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,893 INFO L401 nArgumentSynthesizer]: We have 108 Motzkin's Theorem applications. [2019-12-07 17:22:07,894 INFO L402 nArgumentSynthesizer]: A total of 12 supporting invariants were added. [2019-12-07 17:22:07,985 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:07,989 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 [2019-12-07 17:22:07,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:07,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:07,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:07,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:07,996 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:07,996 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:08,010 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:22:08,031 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-12-07 17:22:08,031 INFO L444 ModelExtractionUtils]: 34 out of 52 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:08,033 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:22:08,035 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 17:22:08,036 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:22:08,036 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrspn_~s~0.offset, v_rep(select #length ULTIMATE.start_build_nondet_String_#t~malloc1.base)_2) = -1*ULTIMATE.start_cstrspn_~s~0.offset + 1*v_rep(select #length ULTIMATE.start_build_nondet_String_#t~malloc1.base)_2 Supporting invariants [] [2019-12-07 17:22:08,070 INFO L297 tatePredicateManager]: 10 out of 11 supporting invariants were superfluous and have been removed [2019-12-07 17:22:08,072 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 17:22:08,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:08,098 INFO L264 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 17:22:08,099 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:08,121 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:22:08,121 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:22:08,131 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 [2019-12-07 17:22:08,131 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 7 Second operand 5 states. [2019-12-07 17:22:08,176 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 7. Second operand 5 states. Result 49 states and 59 transitions. Complement of second has 7 states. [2019-12-07 17:22:08,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:22:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 17:22:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2019-12-07 17:22:08,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 10 letters. Loop has 3 letters. [2019-12-07 17:22:08,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:08,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 13 letters. Loop has 3 letters. [2019-12-07 17:22:08,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:08,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 10 letters. Loop has 6 letters. [2019-12-07 17:22:08,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:08,178 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 59 transitions. [2019-12-07 17:22:08,179 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:22:08,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 35 states and 42 transitions. [2019-12-07 17:22:08,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-12-07 17:22:08,180 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-12-07 17:22:08,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 42 transitions. [2019-12-07 17:22:08,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:22:08,180 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 42 transitions. [2019-12-07 17:22:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 42 transitions. [2019-12-07 17:22:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2019-12-07 17:22:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 17:22:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2019-12-07 17:22:08,182 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-12-07 17:22:08,182 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-12-07 17:22:08,182 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 17:22:08,182 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2019-12-07 17:22:08,182 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:22:08,182 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:08,182 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:08,183 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:22:08,183 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:22:08,183 INFO L794 eck$LassoCheckResult]: Stem: 498#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 496#L-1 havoc main_#res;havoc main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.offset, main_#t~ret12;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 497#L14 assume !(build_nondet_String_~length~0 < 1); 500#L14-2 call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 490#L19 main_#t~ret10.base, main_#t~ret10.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 491#L14-3 assume !(build_nondet_String_~length~0 < 1); 493#L14-5 call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 485#L19-1 main_#t~ret11.base, main_#t~ret11.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.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; 477#L31-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 478#L31-1 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; 492#L34-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 499#L34-1 assume !cstrspn_#t~short7; 495#L34-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6; 482#L34-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 483#L36 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 484#L31-3 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; 479#L31-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 481#L31-1 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; 486#L34-5 [2019-12-07 17:22:08,183 INFO L796 eck$LassoCheckResult]: Loop: 486#L34-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 487#L34-1 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); 494#L34-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;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; 486#L34-5 [2019-12-07 17:22:08,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:08,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1703936771, now seen corresponding path program 1 times [2019-12-07 17:22:08,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:08,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015478218] [2019-12-07 17:22:08,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:22:08,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015478218] [2019-12-07 17:22:08,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:22:08,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 17:22:08,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285638739] [2019-12-07 17:22:08,218 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 17:22:08,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:08,219 INFO L82 PathProgramCache]: Analyzing trace with hash 63657, now seen corresponding path program 2 times [2019-12-07 17:22:08,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:08,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802790755] [2019-12-07 17:22:08,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:08,224 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:08,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:22:08,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:22:08,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:22:08,330 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. cyclomatic complexity: 9 Second operand 7 states. [2019-12-07 17:22:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:22:08,378 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-12-07 17:22:08,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:22:08,378 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 35 transitions. [2019-12-07 17:22:08,379 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:22:08,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 27 states and 31 transitions. [2019-12-07 17:22:08,379 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 17:22:08,380 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-12-07 17:22:08,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 31 transitions. [2019-12-07 17:22:08,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:22:08,380 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-12-07 17:22:08,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 31 transitions. [2019-12-07 17:22:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-07 17:22:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 17:22:08,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-12-07 17:22:08,381 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-12-07 17:22:08,381 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-12-07 17:22:08,381 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 17:22:08,382 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 31 transitions. [2019-12-07 17:22:08,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:22:08,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:08,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:08,382 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:22:08,382 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:22:08,383 INFO L794 eck$LassoCheckResult]: Stem: 573#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 568#L-1 havoc main_#res;havoc main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.offset, main_#t~ret12;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 569#L14 assume !(build_nondet_String_~length~0 < 1); 576#L14-2 call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 565#L19 main_#t~ret10.base, main_#t~ret10.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 566#L14-3 assume !(build_nondet_String_~length~0 < 1); 567#L14-5 call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 560#L19-1 main_#t~ret11.base, main_#t~ret11.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11.base, main_#t~ret11.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; 552#L31-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 553#L31-1 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; 572#L34-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 574#L34-1 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); 575#L34-3 assume !cstrspn_#t~short7;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6; 557#L34-6 call cstrspn_#t~mem9 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1); 558#L36 assume !(cstrspn_#t~mem9 != cstrspn_~c~0);havoc cstrspn_#t~mem9; 559#L31-3 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; 554#L31-4 call cstrspn_#t~mem3 := read~int(cstrspn_~sc1~0.base, cstrspn_~sc1~0.offset, 1); 556#L31-1 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; 561#L34-5 [2019-12-07 17:22:08,383 INFO L796 eck$LassoCheckResult]: Loop: 561#L34-5 call cstrspn_#t~mem5 := read~int(cstrspn_~s~0.base, cstrspn_~s~0.offset, 1);cstrspn_#t~short7 := 0 != cstrspn_#t~mem5; 562#L34-1 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); 570#L34-3 assume !!cstrspn_#t~short7;havoc cstrspn_#t~short7;havoc cstrspn_#t~mem5;havoc cstrspn_#t~mem6;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; 561#L34-5 [2019-12-07 17:22:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:08,383 INFO L82 PathProgramCache]: Analyzing trace with hash -71070591, now seen corresponding path program 2 times [2019-12-07 17:22:08,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:08,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598702030] [2019-12-07 17:22:08,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:08,404 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:08,404 INFO L82 PathProgramCache]: Analyzing trace with hash 63657, now seen corresponding path program 3 times [2019-12-07 17:22:08,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:08,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320233783] [2019-12-07 17:22:08,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:08,409 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:08,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:08,409 INFO L82 PathProgramCache]: Analyzing trace with hash 154934313, now seen corresponding path program 1 times [2019-12-07 17:22:08,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:08,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022994742] [2019-12-07 17:22:08,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:08,434 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:09,115 WARN L192 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 157 [2019-12-07 17:22:09,911 WARN L192 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 112 [2019-12-07 17:22:09,914 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:22:09,914 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:22:09,914 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:22:09,914 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:22:09,914 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:22:09,914 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:09,914 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:22:09,914 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:22:09,915 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrspn.c_Iteration6_Lasso [2019-12-07 17:22:09,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:22:09,915 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:22:09,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:09,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:10,048 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 17:22:10,546 WARN L192 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2019-12-07 17:22:10,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:10,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:10,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:10,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:11,134 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2019-12-07 17:22:11,253 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-12-07 17:22:11,608 WARN L192 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-12-07 17:22:11,633 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:22:11,633 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:11,635 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 [2019-12-07 17:22:11,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:11,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,637 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:11,638 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:11,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,643 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 [2019-12-07 17:22:11,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,645 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:11,645 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:11,647 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:11,651 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 [2019-12-07 17:22:11,652 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,652 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:11,652 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,652 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,652 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:11,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:11,653 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:11,657 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 [2019-12-07 17:22:11,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,658 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:11,658 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,658 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,658 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,659 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:11,659 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:11,660 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,663 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:22:11,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,664 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:11,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:11,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:11,666 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,669 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 [2019-12-07 17:22:11,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,671 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:11,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:11,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:11,672 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,675 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 [2019-12-07 17:22:11,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,677 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:11,677 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:11,679 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:11,683 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 [2019-12-07 17:22:11,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:11,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,684 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,684 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,684 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:11,684 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:11,685 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,688 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:22:11,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,689 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:11,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,689 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:11,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:11,691 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,694 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 [2019-12-07 17:22:11,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:11,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,696 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:11,697 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:11,698 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,702 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 [2019-12-07 17:22:11,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,703 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:11,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,704 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:11,704 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:11,705 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,709 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 [2019-12-07 17:22:11,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,710 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:11,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:11,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:11,712 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,715 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:22:11,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,717 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2019-12-07 17:22:11,717 INFO L204 nArgumentSynthesizer]: 6 loop disjuncts [2019-12-07 17:22:11,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,772 INFO L401 nArgumentSynthesizer]: We have 132 Motzkin's Theorem applications. [2019-12-07 17:22:11,773 INFO L402 nArgumentSynthesizer]: A total of 12 supporting invariants were added. [2019-12-07 17:22:11,929 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,933 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 [2019-12-07 17:22:11,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,936 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:11,936 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:11,938 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,942 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 [2019-12-07 17:22:11,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,944 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:11,944 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:11,947 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,951 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 [2019-12-07 17:22:11,952 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,953 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,953 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,953 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,954 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:11,954 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:11,956 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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 [2019-12-07 17:22:11,960 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 [2019-12-07 17:22:11,961 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:11,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:11,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:11,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:11,966 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:11,967 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:11,979 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:22:11,997 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-12-07 17:22:11,997 INFO L444 ModelExtractionUtils]: 32 out of 46 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa7719ff-128b-4739-bd40-d2a9c2907110/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) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:11,999 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:22:12,001 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 17:22:12,001 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:22:12,001 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrspn_~s~0.offset, v_rep(select #length ULTIMATE.start_cstrspn_~s~0.base)_3) = -1*ULTIMATE.start_cstrspn_~s~0.offset + 1*v_rep(select #length ULTIMATE.start_cstrspn_~s~0.base)_3 Supporting invariants [] [2019-12-07 17:22:12,050 INFO L297 tatePredicateManager]: 17 out of 17 supporting invariants were superfluous and have been removed [2019-12-07 17:22:12,051 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 17:22:12,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:12,075 INFO L264 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:22:12,076 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:12,081 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:22:12,082 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:22:12,089 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 [2019-12-07 17:22:12,089 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 31 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 17:22:12,103 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 31 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 43 states and 48 transitions. Complement of second has 5 states. [2019-12-07 17:22:12,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:22:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:22:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 19 transitions. [2019-12-07 17:22:12,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 18 letters. Loop has 3 letters. [2019-12-07 17:22:12,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:12,104 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:22:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:12,129 INFO L264 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:22:12,130 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:12,135 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:22:12,135 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:22:12,142 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:22:12,142 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 31 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 17:22:12,154 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 31 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 43 states and 48 transitions. Complement of second has 5 states. [2019-12-07 17:22:12,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:22:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:22:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 19 transitions. [2019-12-07 17:22:12,155 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 18 letters. Loop has 3 letters. [2019-12-07 17:22:12,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:12,155 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:22:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:12,177 INFO L264 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:22:12,178 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:12,182 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:22:12,183 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:22:12,189 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:22:12,189 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 31 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 17:22:12,202 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 31 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 42 states and 48 transitions. Complement of second has 4 states. [2019-12-07 17:22:12,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:22:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:22:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2019-12-07 17:22:12,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 18 letters. Loop has 3 letters. [2019-12-07 17:22:12,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:12,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 21 letters. Loop has 3 letters. [2019-12-07 17:22:12,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:12,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 18 letters. Loop has 6 letters. [2019-12-07 17:22:12,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:12,203 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 48 transitions. [2019-12-07 17:22:12,204 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:22:12,205 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 0 states and 0 transitions. [2019-12-07 17:22:12,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 17:22:12,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 17:22:12,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 17:22:12,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:22:12,205 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:22:12,205 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:22:12,205 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:22:12,205 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 17:22:12,205 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:22:12,205 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:22:12,205 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 17:22:12,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 05:22:12 BoogieIcfgContainer [2019-12-07 17:22:12,209 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 17:22:12,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:22:12,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:22:12,209 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:22:12,210 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:22:03" (3/4) ... [2019-12-07 17:22:12,212 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:22:12,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:22:12,213 INFO L168 Benchmark]: Toolchain (without parser) took 9259.44 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 252.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 61.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:12,213 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:22:12,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -151.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:12,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:12,214 INFO L168 Benchmark]: Boogie Preprocessor took 22.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:12,214 INFO L168 Benchmark]: RCFGBuilder took 197.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:12,215 INFO L168 Benchmark]: BuchiAutomizer took 8814.84 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 155.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -63.7 MB). Peak memory consumption was 92.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:12,215 INFO L168 Benchmark]: Witness Printer took 2.64 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:22:12,217 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 190.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -151.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 197.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 8814.84 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 155.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -63.7 MB). Peak memory consumption was 92.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.64 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[build_nondet_String()] + -1 * sc1 and consists of 3 locations. One deterministic module has affine ranking function -1 * s + unknown-#length-unknown[malloc(length * sizeof(char))] and consists of 5 locations. One nondeterministic module has affine ranking function -1 * s + unknown-#length-unknown[s] and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.7s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 8.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 27 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 138 SDtfs, 138 SDslu, 119 SDs, 0 SdLazy, 177 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital381 mio100 ax100 hnf99 lsp91 ukn71 mio100 lsp33 div124 bol100 ite100 ukn100 eq169 hnf82 smp88 dnf674 smp45 tf100 neg96 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 215ms VariablesStem: 7 VariablesLoop: 4 DisjunctsStem: 4 DisjunctsLoop: 6 SupportingInvariants: 12 MotzkinApplications: 132 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...