./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/cstrchr-alloca-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/cstrchr-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/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 5bb49c482aaa1a2241193483b61f4d87bfc9c366 .............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:19:21,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:19:21,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:19:21,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:19:21,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:19:21,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:19:21,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:19:21,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:19:21,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:19:21,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:19:21,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:19:21,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:19:21,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:19:21,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:19:21,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:19:21,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:19:21,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:19:21,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:19:21,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:19:21,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:19:21,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:19:21,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:19:21,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:19:21,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:19:21,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:19:21,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:19:21,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:19:21,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:19:21,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:19:21,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:19:21,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:19:21,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:19:21,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:19:21,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:19:21,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:19:21,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:19:21,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:19:21,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:19:21,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:19:21,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:19:21,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:19:21,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 22:19:21,381 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:19:21,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:19:21,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:19:21,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:19:21,387 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:19:21,388 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 22:19:21,388 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 22:19:21,388 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 22:19:21,389 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 22:19:21,389 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 22:19:21,390 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 22:19:21,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:19:21,391 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:19:21,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:19:21,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:19:21,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 22:19:21,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 22:19:21,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 22:19:21,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:19:21,393 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 22:19:21,393 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:19:21,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 22:19:21,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:19:21,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:19:21,395 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 22:19:21,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:19:21,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:19:21,395 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 22:19:21,399 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 22:19:21,400 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_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/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 -> 5bb49c482aaa1a2241193483b61f4d87bfc9c366 [2019-11-15 22:19:21,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:19:21,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:19:21,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:19:21,481 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:19:21,482 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:19:21,484 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/cstrchr-alloca-1.i [2019-11-15 22:19:21,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/bin/uautomizer/data/696ab53f6/b67a0f00852c4d178e5970b709b5afc0/FLAG7a1dcc9ce [2019-11-15 22:19:22,053 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:19:22,054 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/sv-benchmarks/c/termination-memory-alloca/cstrchr-alloca-1.i [2019-11-15 22:19:22,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/bin/uautomizer/data/696ab53f6/b67a0f00852c4d178e5970b709b5afc0/FLAG7a1dcc9ce [2019-11-15 22:19:22,359 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/bin/uautomizer/data/696ab53f6/b67a0f00852c4d178e5970b709b5afc0 [2019-11-15 22:19:22,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:19:22,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:19:22,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:19:22,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:19:22,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:19:22,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:19:22" (1/1) ... [2019-11-15 22:19:22,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460fbca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:22, skipping insertion in model container [2019-11-15 22:19:22,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:19:22" (1/1) ... [2019-11-15 22:19:22,381 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:19:22,437 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:19:22,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:19:22,911 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:19:22,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:19:23,014 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:19:23,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23 WrapperNode [2019-11-15 22:19:23,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:19:23,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:19:23,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:19:23,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:19:23,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (1/1) ... [2019-11-15 22:19:23,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (1/1) ... [2019-11-15 22:19:23,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:19:23,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:19:23,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:19:23,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:19:23,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (1/1) ... [2019-11-15 22:19:23,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (1/1) ... [2019-11-15 22:19:23,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (1/1) ... [2019-11-15 22:19:23,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (1/1) ... [2019-11-15 22:19:23,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (1/1) ... [2019-11-15 22:19:23,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (1/1) ... [2019-11-15 22:19:23,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (1/1) ... [2019-11-15 22:19:23,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:19:23,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:19:23,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:19:23,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:19:23,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c14ca4d1-cbcb-4ecb-9cd6-200e15681310/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 [2019-11-15 22:19:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:19:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:19:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:19:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:19:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:19:23,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:19:23,542 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:19:23,542 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 22:19:23,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:19:23 BoogieIcfgContainer [2019-11-15 22:19:23,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:19:23,544 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 22:19:23,544 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 22:19:23,552 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 22:19:23,553 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:19:23,555 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 10:19:22" (1/3) ... [2019-11-15 22:19:23,573 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@599227d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 10:19:23, skipping insertion in model container [2019-11-15 22:19:23,573 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:19:23,573 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:19:23" (2/3) ... [2019-11-15 22:19:23,574 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@599227d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 10:19:23, skipping insertion in model container [2019-11-15 22:19:23,574 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:19:23,574 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:19:23" (3/3) ... [2019-11-15 22:19:23,577 INFO L371 chiAutomizerObserver]: Analyzing ICFG cstrchr-alloca-1.i [2019-11-15 22:19:23,629 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 22:19:23,629 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 22:19:23,630 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 22:19:23,630 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:19:23,630 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:19:23,630 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 22:19:23,630 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:19:23,630 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 22:19:23,646 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-15 22:19:23,671 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 22:19:23,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:19:23,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:19:23,679 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 22:19:23,680 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 22:19:23,680 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 22:19:23,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-15 22:19:23,682 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 22:19:23,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:19:23,682 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:19:23,683 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 22:19:23,683 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 22:19:23,692 INFO L791 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 9#L-1true havoc main_#res;havoc main_#t~nondet8, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet10, main_#t~ret11.base, main_#t~ret11.offset, main_~length~0, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length~0 := main_#t~nondet8;havoc main_#t~nondet8; 6#L555true assume !(main_~length~0 < 1); 10#L555-2true call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;call write~int(0, main_~nondetString~0.base, main_~nondetString~0.offset + (main_~length~0 - 1), 1);cstrchr_#in~s.base, cstrchr_#in~s.offset, cstrchr_#in~c := main_~nondetString~0.base, main_~nondetString~0.offset, main_#t~nondet10;havoc cstrchr_#res.base, cstrchr_#res.offset;havoc cstrchr_#t~post5.base, cstrchr_#t~post5.offset, cstrchr_#t~mem2, cstrchr_#t~mem3, cstrchr_#t~short4, cstrchr_#t~mem6, cstrchr_#t~ite7.base, cstrchr_#t~ite7.offset, cstrchr_~s.base, cstrchr_~s.offset, cstrchr_~c;cstrchr_~s.base, cstrchr_~s.offset := cstrchr_#in~s.base, cstrchr_#in~s.offset;cstrchr_~c := cstrchr_#in~c; 7#L549-5true [2019-11-15 22:19:23,693 INFO L793 eck$LassoCheckResult]: Loop: 7#L549-5true call cstrchr_#t~mem2 := read~int(cstrchr_~s.base, cstrchr_~s.offset, 1);cstrchr_#t~short4 := 0 != cstrchr_#t~mem2; 3#L549-1true assume cstrchr_#t~short4;call cstrchr_#t~mem3 := read~int(cstrchr_~s.base, cstrchr_~s.offset, 1);cstrchr_#t~short4 := cstrchr_#t~mem3 != (if cstrchr_~c % 256 <= 127 then cstrchr_~c % 256 else cstrchr_~c % 256 - 256); 5#L549-3true assume !!cstrchr_#t~short4;havoc cstrchr_#t~mem3;havoc cstrchr_#t~mem2;havoc cstrchr_#t~short4;cstrchr_#t~post5.base, cstrchr_#t~post5.offset := cstrchr_~s.base, cstrchr_~s.offset;cstrchr_~s.base, cstrchr_~s.offset := cstrchr_#t~post5.base, 1 + cstrchr_#t~post5.offset;havoc cstrchr_#t~post5.base, cstrchr_#t~post5.offset; 7#L549-5true [2019-11-15 22:19:23,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:19:23,699 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-15 22:19:23,708 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:19:23,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247734547] [2019-11-15 22:19:23,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:19:23,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:19:23,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:19:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:19:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:19:23,872 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:19:23,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:19:23,874 INFO L82 PathProgramCache]: Analyzing trace with hash 43797, now seen corresponding path program 1 times [2019-11-15 22:19:23,874 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:19:23,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480716873] [2019-11-15 22:19:23,875 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:19:23,875 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:19:23,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:19:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:19:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:19:23,907 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:19:23,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:19:23,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815409, now seen corresponding path program 1 times [2019-11-15 22:19:23,909 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:19:23,909 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799809140] [2019-11-15 22:19:23,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:19:23,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:19:23,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:19:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:19:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:19:23,969 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:19:24,140 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-11-15 22:19:24,363 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2019-11-15 22:19:24,576 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-11-15 22:19:24,679 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:19:24,681 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:19:24,681 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:19:24,682 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:19:24,682 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:19:24,682 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:19:24,682 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:19:24,683 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:19:24,683 INFO L131 ssoRankerPreferences]: Filename of dumped script: cstrchr-alloca-1.i_Iteration1_Lasso [2019-11-15 22:19:24,683 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:19:24,683 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:19:24,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:24,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:24,936 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-11-15 22:19:25,110 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2019-11-15 22:19:25,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 22:19:25,872 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-11-15 22:19:26,114 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:19:26,120 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:19:26,123 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 [2019-11-15 22:19:26,126 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:19:26,126 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:19:26,127 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:19:26,127 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:19:26,128 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:19:26,130 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:19:26,130 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:19:26,134 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:19:26,138 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 [2019-11-15 22:19:26,141 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:19:26,148 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:19:26,148 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:19:26,149 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:19:26,157 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:19:26,158 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:19:26,217 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:19:26,218 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 [2019-11-15 22:19:26,219 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:19:26,219 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:19:26,220 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:19:26,220 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:19:26,222 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:19:26,222 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:19:26,226 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:19:26,236 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 22:19:26,237 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:19:26,237 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:19:26,238 INFO L203 nArgumentSynthesizer]: 6 loop disjuncts [2019-11-15 22:19:26,238 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:19:26,310 INFO L400 nArgumentSynthesizer]: We have 96 Motzkin's Theorem applications. [2019-11-15 22:19:26,310 INFO L401 nArgumentSynthesizer]: A total of 12 supporting invariants were added. [2019-11-15 22:19:26,638 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:19:26,638 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 [2019-11-15 22:19:26,639 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:19:26,640 INFO L202 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-15 22:19:26,640 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:19:26,640 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:19:26,643 INFO L400 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-15 22:19:26,643 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:19:26,656 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:19:26,656 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 [2019-11-15 22:19:26,657 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:19:26,657 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:19:26,658 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:19:26,658 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:19:26,659 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:19:26,659 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:19:26,661 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:19:26,662 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 [2019-11-15 22:19:26,662 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:19:26,663 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:19:26,663 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:19:26,663 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:19:26,666 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:19:26,666 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:19:26,691 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:19:26,717 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 22:19:26,718 INFO L444 ModelExtractionUtils]: 21 out of 25 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:19:26,720 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:19:26,722 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-15 22:19:26,722 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:19:26,723 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrchr_~s.base)_1, ULTIMATE.start_cstrchr_~s.offset) = 1*v_rep(select #length ULTIMATE.start_cstrchr_~s.base)_1 - 1*ULTIMATE.start_cstrchr_~s.offset Supporting invariants [] [2019-11-15 22:19:26,747 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-11-15 22:19:26,757 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-15 22:19:26,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:19:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:19:26,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:19:26,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:19:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:19:26,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:19:26,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:19:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:19:26,888 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 [2019-11-15 22:19:26,890 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 3 states. [2019-11-15 22:19:26,967 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 5 states. [2019-11-15 22:19:26,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 22:19:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 22:19:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2019-11-15 22:19:26,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-15 22:19:26,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:19:26,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-15 22:19:26,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:19:26,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-15 22:19:26,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:19:26,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2019-11-15 22:19:26,987 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 22:19:26,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2019-11-15 22:19:26,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 22:19:26,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 22:19:26,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 22:19:26,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 22:19:26,993 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:19:26,993 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:19:26,994 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:19:26,994 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 22:19:26,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:19:26,994 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 22:19:26,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 22:19:27,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 10:19:27 BoogieIcfgContainer [2019-11-15 22:19:27,002 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 22:19:27,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:19:27,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:19:27,003 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:19:27,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:19:23" (3/4) ... [2019-11-15 22:19:27,008 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 22:19:27,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:19:27,011 INFO L168 Benchmark]: Toolchain (without parser) took 4646.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 944.7 MB in the beginning and 846.2 MB in the end (delta: 98.6 MB). Peak memory consumption was 270.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:19:27,011 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:19:27,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -209.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:19:27,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:19:27,015 INFO L168 Benchmark]: Boogie Preprocessor took 31.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:19:27,015 INFO L168 Benchmark]: RCFGBuilder took 419.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:19:27,017 INFO L168 Benchmark]: BuchiAutomizer took 3458.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 846.2 MB in the end (delta: 279.8 MB). Peak memory consumption was 279.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:19:27,017 INFO L168 Benchmark]: Witness Printer took 6.03 ms. Allocated memory is still 1.2 GB. Free memory is still 846.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:19:27,028 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 651.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -209.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 419.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3458.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 846.2 MB in the end (delta: 279.8 MB). Peak memory consumption was 279.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.03 ms. Allocated memory is still 1.2 GB. Free memory is still 846.2 MB. 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[s] + -1 * s and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 25 SDslu, 7 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital180 mio100 ax110 hnf98 lsp88 ukn70 mio100 lsp33 div164 bol100 ite100 ukn100 eq155 hnf66 smp100 dnf873 smp27 tf100 neg95 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 402ms VariablesStem: 3 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 6 SupportingInvariants: 12 MotzkinApplications: 96 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...