./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 256a9ac0f321f0d2863fb720d2ae6cb61570c373 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:34:37,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:34:37,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:34:37,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:34:37,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:34:37,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:34:37,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:34:37,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:34:37,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:34:37,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:34:37,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:34:37,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:34:37,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:34:37,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:34:37,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:34:37,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:34:37,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:34:37,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:34:37,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:34:37,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:34:37,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:34:37,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:34:37,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:34:37,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:34:37,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:34:37,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:34:37,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:34:37,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:34:37,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:34:37,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:34:37,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:34:37,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:34:37,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:34:37,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:34:37,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:34:37,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:34:37,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:34:37,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:34:37,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:34:37,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:34:37,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:34:37,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:34:37,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:34:37,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:34:37,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:34:37,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:34:37,514 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:34:37,514 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:34:37,514 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:34:37,514 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:34:37,515 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:34:37,515 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:34:37,516 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:34:37,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:34:37,516 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:34:37,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:34:37,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:34:37,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:34:37,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:34:37,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:34:37,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:34:37,519 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:34:37,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:34:37,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:34:37,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:34:37,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:34:37,520 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:34:37,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:34:37,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:34:37,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:34:37,521 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:34:37,523 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:34:37,523 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 256a9ac0f321f0d2863fb720d2ae6cb61570c373 [2020-10-20 06:34:37,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:34:37,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:34:37,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:34:37,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:34:37,759 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:34:37,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrcmp.c [2020-10-20 06:34:37,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3aa1357d/df511c2fbb264f1c9e388905cd820a00/FLAG648fd11f5 [2020-10-20 06:34:38,322 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:34:38,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrcmp.c [2020-10-20 06:34:38,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3aa1357d/df511c2fbb264f1c9e388905cd820a00/FLAG648fd11f5 [2020-10-20 06:34:38,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3aa1357d/df511c2fbb264f1c9e388905cd820a00 [2020-10-20 06:34:38,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:34:38,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:34:38,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:38,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:34:38,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:34:38,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:38" (1/1) ... [2020-10-20 06:34:38,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf87428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:38, skipping insertion in model container [2020-10-20 06:34:38,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:38" (1/1) ... [2020-10-20 06:34:38,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:34:38,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:34:38,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:38,996 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:34:39,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:39,035 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:34:39,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39 WrapperNode [2020-10-20 06:34:39,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:39,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:39,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:34:39,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:34:39,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (1/1) ... [2020-10-20 06:34:39,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (1/1) ... [2020-10-20 06:34:39,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:39,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:34:39,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:34:39,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:34:39,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (1/1) ... [2020-10-20 06:34:39,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (1/1) ... [2020-10-20 06:34:39,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (1/1) ... [2020-10-20 06:34:39,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (1/1) ... [2020-10-20 06:34:39,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (1/1) ... [2020-10-20 06:34:39,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (1/1) ... [2020-10-20 06:34:39,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (1/1) ... [2020-10-20 06:34:39,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:34:39,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:34:39,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:34:39,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:34:39,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:34:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:34:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:34:39,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:34:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:34:39,452 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:34:39,452 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-20 06:34:39,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:39 BoogieIcfgContainer [2020-10-20 06:34:39,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:34:39,463 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:34:39,467 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:34:39,479 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:34:39,480 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:39,480 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:34:38" (1/3) ... [2020-10-20 06:34:39,483 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e203053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:39, skipping insertion in model container [2020-10-20 06:34:39,483 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:39,484 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:39" (2/3) ... [2020-10-20 06:34:39,484 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e203053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:39, skipping insertion in model container [2020-10-20 06:34:39,484 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:39,485 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:39" (3/3) ... [2020-10-20 06:34:39,486 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrcmp.c [2020-10-20 06:34:39,533 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:34:39,534 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:34:39,534 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:34:39,534 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:34:39,534 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:34:39,534 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:34:39,535 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:34:39,535 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:34:39,549 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 06:34:39,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:39,571 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:39,571 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:39,576 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:34:39,576 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:39,576 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:34:39,577 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 06:34:39,578 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:39,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:39,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:39,579 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:34:39,579 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:39,585 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~ret11.base, main_#t~ret11.offset, main_#t~ret12.base, main_#t~ret12.offset, main_#t~ret13;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; 20#L14true assume !(build_nondet_String_~length~0 < 1); 16#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~ret11.base, main_#t~ret11.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; 15#L14-3true assume build_nondet_String_~length~0 < 1;build_nondet_String_~length~0 := 1; 11#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; 7#L19-1true main_#t~ret12.base, main_#t~ret12.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;cstrcmp_#in~s1.base, cstrcmp_#in~s1.offset, cstrcmp_#in~s2.base, cstrcmp_#in~s2.offset := main_#t~ret11.base, main_#t~ret11.offset, main_#t~ret12.base, main_#t~ret12.offset;havoc cstrcmp_#res;havoc cstrcmp_#t~post6.base, cstrcmp_#t~post6.offset, cstrcmp_#t~post7.base, cstrcmp_#t~post7.offset, cstrcmp_#t~mem2, cstrcmp_#t~mem3, cstrcmp_#t~mem4, cstrcmp_#t~short5, cstrcmp_#t~mem8, cstrcmp_#t~mem9, cstrcmp_#t~ite10, cstrcmp_~s1.base, cstrcmp_~s1.offset, cstrcmp_~s2.base, cstrcmp_~s2.offset, cstrcmp_~uc1~0, cstrcmp_~uc2~0;cstrcmp_~s1.base, cstrcmp_~s1.offset := cstrcmp_#in~s1.base, cstrcmp_#in~s1.offset;cstrcmp_~s2.base, cstrcmp_~s2.offset := cstrcmp_#in~s2.base, cstrcmp_#in~s2.offset;havoc cstrcmp_~uc1~0;havoc cstrcmp_~uc2~0; 5#L32-5true [2020-10-20 06:34:39,586 INFO L796 eck$LassoCheckResult]: Loop: 5#L32-5true call cstrcmp_#t~mem2 := read~int(cstrcmp_~s1.base, cstrcmp_~s1.offset, 1);cstrcmp_#t~short5 := 0 != cstrcmp_#t~mem2; 13#L32-1true assume cstrcmp_#t~short5;call cstrcmp_#t~mem3 := read~int(cstrcmp_~s1.base, cstrcmp_~s1.offset, 1);call cstrcmp_#t~mem4 := read~int(cstrcmp_~s2.base, cstrcmp_~s2.offset, 1);cstrcmp_#t~short5 := cstrcmp_#t~mem3 == cstrcmp_#t~mem4; 8#L32-3true assume !!cstrcmp_#t~short5;havoc cstrcmp_#t~mem4;havoc cstrcmp_#t~mem3;havoc cstrcmp_#t~mem2;havoc cstrcmp_#t~short5;cstrcmp_#t~post6.base, cstrcmp_#t~post6.offset := cstrcmp_~s1.base, cstrcmp_~s1.offset;cstrcmp_~s1.base, cstrcmp_~s1.offset := cstrcmp_#t~post6.base, 1 + cstrcmp_#t~post6.offset;havoc cstrcmp_#t~post6.base, cstrcmp_#t~post6.offset;cstrcmp_#t~post7.base, cstrcmp_#t~post7.offset := cstrcmp_~s2.base, cstrcmp_~s2.offset;cstrcmp_~s2.base, cstrcmp_~s2.offset := cstrcmp_#t~post7.base, 1 + cstrcmp_#t~post7.offset;havoc cstrcmp_#t~post7.base, cstrcmp_#t~post7.offset; 5#L32-5true [2020-10-20 06:34:39,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:39,593 INFO L82 PathProgramCache]: Analyzing trace with hash 176610378, now seen corresponding path program 1 times [2020-10-20 06:34:39,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:39,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948966667] [2020-10-20 06:34:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,777 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:39,778 INFO L82 PathProgramCache]: Analyzing trace with hash 54720, now seen corresponding path program 1 times [2020-10-20 06:34:39,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:39,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029574076] [2020-10-20 06:34:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:39,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:39,811 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:39,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:39,813 INFO L82 PathProgramCache]: Analyzing trace with hash 64858327, now seen corresponding path program 1 times [2020-10-20 06:34:39,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:39,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963282125] [2020-10-20 06:34:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:39,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963282125] [2020-10-20 06:34:39,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:34:39,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:34:39,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547051059] [2020-10-20 06:34:40,135 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-20 06:34:40,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:34:40,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:34:40,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:34:40,208 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2020-10-20 06:34:40,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:34:40,372 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-20 06:34:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:34:40,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 38 transitions. [2020-10-20 06:34:40,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:40,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 13 states and 14 transitions. [2020-10-20 06:34:40,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-20 06:34:40,383 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-10-20 06:34:40,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2020-10-20 06:34:40,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:34:40,384 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-10-20 06:34:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2020-10-20 06:34:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2020-10-20 06:34:40,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 06:34:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-10-20 06:34:40,411 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-10-20 06:34:40,411 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-10-20 06:34:40,411 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:34:40,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2020-10-20 06:34:40,412 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:40,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:40,412 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:40,413 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:34:40,413 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:40,413 INFO L794 eck$LassoCheckResult]: Stem: 79#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 75#L-1 havoc main_#res;havoc main_#t~ret11.base, main_#t~ret11.offset, main_#t~ret12.base, main_#t~ret12.offset, main_#t~ret13;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; 76#L14 assume !(build_nondet_String_~length~0 < 1); 83#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; 84#L19 main_#t~ret11.base, main_#t~ret11.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; 80#L14-3 assume !(build_nondet_String_~length~0 < 1); 81#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; 85#L19-1 main_#t~ret12.base, main_#t~ret12.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;cstrcmp_#in~s1.base, cstrcmp_#in~s1.offset, cstrcmp_#in~s2.base, cstrcmp_#in~s2.offset := main_#t~ret11.base, main_#t~ret11.offset, main_#t~ret12.base, main_#t~ret12.offset;havoc cstrcmp_#res;havoc cstrcmp_#t~post6.base, cstrcmp_#t~post6.offset, cstrcmp_#t~post7.base, cstrcmp_#t~post7.offset, cstrcmp_#t~mem2, cstrcmp_#t~mem3, cstrcmp_#t~mem4, cstrcmp_#t~short5, cstrcmp_#t~mem8, cstrcmp_#t~mem9, cstrcmp_#t~ite10, cstrcmp_~s1.base, cstrcmp_~s1.offset, cstrcmp_~s2.base, cstrcmp_~s2.offset, cstrcmp_~uc1~0, cstrcmp_~uc2~0;cstrcmp_~s1.base, cstrcmp_~s1.offset := cstrcmp_#in~s1.base, cstrcmp_#in~s1.offset;cstrcmp_~s2.base, cstrcmp_~s2.offset := cstrcmp_#in~s2.base, cstrcmp_#in~s2.offset;havoc cstrcmp_~uc1~0;havoc cstrcmp_~uc2~0; 82#L32-5 [2020-10-20 06:34:40,413 INFO L796 eck$LassoCheckResult]: Loop: 82#L32-5 call cstrcmp_#t~mem2 := read~int(cstrcmp_~s1.base, cstrcmp_~s1.offset, 1);cstrcmp_#t~short5 := 0 != cstrcmp_#t~mem2; 77#L32-1 assume cstrcmp_#t~short5;call cstrcmp_#t~mem3 := read~int(cstrcmp_~s1.base, cstrcmp_~s1.offset, 1);call cstrcmp_#t~mem4 := read~int(cstrcmp_~s2.base, cstrcmp_~s2.offset, 1);cstrcmp_#t~short5 := cstrcmp_#t~mem3 == cstrcmp_#t~mem4; 78#L32-3 assume !!cstrcmp_#t~short5;havoc cstrcmp_#t~mem4;havoc cstrcmp_#t~mem3;havoc cstrcmp_#t~mem2;havoc cstrcmp_#t~short5;cstrcmp_#t~post6.base, cstrcmp_#t~post6.offset := cstrcmp_~s1.base, cstrcmp_~s1.offset;cstrcmp_~s1.base, cstrcmp_~s1.offset := cstrcmp_#t~post6.base, 1 + cstrcmp_#t~post6.offset;havoc cstrcmp_#t~post6.base, cstrcmp_#t~post6.offset;cstrcmp_#t~post7.base, cstrcmp_#t~post7.offset := cstrcmp_~s2.base, cstrcmp_~s2.offset;cstrcmp_~s2.base, cstrcmp_~s2.offset := cstrcmp_#t~post7.base, 1 + cstrcmp_#t~post7.offset;havoc cstrcmp_#t~post7.base, cstrcmp_#t~post7.offset; 82#L32-5 [2020-10-20 06:34:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:40,414 INFO L82 PathProgramCache]: Analyzing trace with hash 176612300, now seen corresponding path program 1 times [2020-10-20 06:34:40,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:40,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909852396] [2020-10-20 06:34:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,466 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:40,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:40,467 INFO L82 PathProgramCache]: Analyzing trace with hash 54720, now seen corresponding path program 2 times [2020-10-20 06:34:40,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:40,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124367146] [2020-10-20 06:34:40,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,500 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:40,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:40,500 INFO L82 PathProgramCache]: Analyzing trace with hash 122116629, now seen corresponding path program 1 times [2020-10-20 06:34:40,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:40,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028923089] [2020-10-20 06:34:40,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:40,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:40,609 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:40,747 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-20 06:34:41,209 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2020-10-20 06:34:41,361 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-20 06:34:41,372 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:41,373 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:41,373 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:41,374 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:41,374 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:41,374 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:41,374 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:41,375 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:41,375 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrcmp.c_Iteration2_Lasso [2020-10-20 06:34:41,375 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:41,375 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:41,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,742 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-20 06:34:41,886 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-20 06:34:41,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:41,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:42,630 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-20 06:34:42,896 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:42,902 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:42,917 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:42,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:42,923 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:42,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:42,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:42,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:42,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:42,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:42,941 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:42,981 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:42,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:42,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:42,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:42,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:42,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:42,986 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:42,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:42,987 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:43,010 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:43,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:43,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:43,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:43,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:43,016 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:43,016 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:43,019 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:43,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:43,042 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:43,042 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:43,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:43,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:43,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:43,044 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:43,044 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:43,046 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:43,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:43,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:43,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:43,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:43,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:43,089 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:43,090 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:43,090 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:43,093 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:43,118 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:43,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:43,120 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:43,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:43,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:43,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:43,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:43,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:43,123 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:43,157 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:43,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:43,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:43,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:43,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:43,163 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:43,163 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:43,167 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:43,190 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:43,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:43,192 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2020-10-20 06:34:43,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:43,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:43,242 INFO L401 nArgumentSynthesizer]: We have 12 Motzkin's Theorem applications. [2020-10-20 06:34:43,244 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:43,268 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:43,290 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:43,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:43,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:43,293 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:43,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:43,315 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:43,315 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:43,336 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:43,573 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2020-10-20 06:34:43,573 INFO L444 ModelExtractionUtils]: 11 out of 46 variables were initially zero. Simplification set additionally 32 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:43,588 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:43,593 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:34:43,593 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:43,594 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrcmp_~s2.offset, v_rep(select #length ULTIMATE.start_build_nondet_String_#t~malloc1.base)_1) = -1*ULTIMATE.start_cstrcmp_~s2.offset + 1*v_rep(select #length ULTIMATE.start_build_nondet_String_#t~malloc1.base)_1 Supporting invariants [] [2020-10-20 06:34:43,733 INFO L297 tatePredicateManager]: 12 out of 13 supporting invariants were superfluous and have been removed [2020-10-20 06:34:43,747 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-20 06:34:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:43,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:34:43,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:43,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:34:43,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:43,943 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-10-20 06:34:43,944 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 5 states. [2020-10-20 06:34:44,047 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 12 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 14 states and 16 transitions. Complement of second has 7 states. [2020-10-20 06:34:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:34:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-10-20 06:34:44,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-20 06:34:44,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:44,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 11 letters. Loop has 3 letters. [2020-10-20 06:34:44,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:44,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 8 letters. Loop has 6 letters. [2020-10-20 06:34:44,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:44,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2020-10-20 06:34:44,060 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:44,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2020-10-20 06:34:44,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:34:44,079 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:34:44,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:34:44,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:34:44,079 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:44,079 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:44,079 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:44,080 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:34:44,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:34:44,080 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:44,080 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:34:44,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:34:44 BoogieIcfgContainer [2020-10-20 06:34:44,102 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:34:44,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:34:44,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:34:44,103 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:34:44,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:39" (3/4) ... [2020-10-20 06:34:44,117 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:34:44,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:34:44,121 INFO L168 Benchmark]: Toolchain (without parser) took 5363.54 ms. Allocated memory was 42.5 MB in the beginning and 74.4 MB in the end (delta: 32.0 MB). Free memory was 23.0 MB in the beginning and 53.9 MB in the end (delta: -31.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:44,124 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 32.0 MB. Free memory was 10.7 MB in the beginning and 10.6 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:44,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.79 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 22.1 MB in the beginning and 24.9 MB in the end (delta: -2.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:44,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 43.0 MB. Free memory was 24.7 MB in the beginning and 23.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:44,129 INFO L168 Benchmark]: Boogie Preprocessor took 24.74 ms. Allocated memory is still 43.0 MB. Free memory was 23.1 MB in the beginning and 21.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:44,133 INFO L168 Benchmark]: RCFGBuilder took 365.09 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 21.5 MB in the beginning and 25.1 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:44,134 INFO L168 Benchmark]: BuchiAutomizer took 4639.04 ms. Allocated memory was 45.6 MB in the beginning and 74.4 MB in the end (delta: 28.8 MB). Free memory was 24.8 MB in the beginning and 54.8 MB in the end (delta: -30.0 MB). Peak memory consumption was 46.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:44,134 INFO L168 Benchmark]: Witness Printer took 15.05 ms. Allocated memory is still 74.4 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:34:44,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 32.0 MB. Free memory was 10.7 MB in the beginning and 10.6 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 274.79 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 22.1 MB in the beginning and 24.9 MB in the end (delta: -2.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 43.0 MB. Free memory was 24.7 MB in the beginning and 23.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 24.74 ms. Allocated memory is still 43.0 MB. Free memory was 23.1 MB in the beginning and 21.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 365.09 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 21.5 MB in the beginning and 25.1 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 4639.04 ms. Allocated memory was 45.6 MB in the beginning and 74.4 MB in the end (delta: 28.8 MB). Free memory was 24.8 MB in the beginning and 54.8 MB in the end (delta: -30.0 MB). Peak memory consumption was 46.4 MB. Max. memory is 14.3 GB. * Witness Printer took 15.05 ms. Allocated memory is still 74.4 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 14.3 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * s2 + unknown-#length-unknown[malloc(length * sizeof(char))] and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 3.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 33 SDtfs, 38 SDslu, 84 SDs, 0 SdLazy, 73 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital224 mio100 ax100 hnf100 lsp97 ukn83 mio100 lsp47 div100 bol100 ite100 ukn100 eq194 hnf88 smp100 dnf182 smp92 tf100 neg96 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 81ms VariablesStem: 10 VariablesLoop: 7 DisjunctsStem: 4 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 12 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...