./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/array-memsafety/openbsd_cbzero-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 822411a57a10ce043cb0121fce52bdc7e9506783 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:18:17,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 08:18:17,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 08:18:18,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 08:18:18,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 08:18:18,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 08:18:18,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 08:18:18,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 08:18:18,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 08:18:18,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 08:18:18,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 08:18:18,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 08:18:18,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 08:18:18,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 08:18:18,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 08:18:18,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 08:18:18,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 08:18:18,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 08:18:18,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 08:18:18,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 08:18:18,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 08:18:18,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 08:18:18,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 08:18:18,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 08:18:18,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 08:18:18,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 08:18:18,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 08:18:18,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 08:18:18,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 08:18:18,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 08:18:18,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 08:18:18,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 08:18:18,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 08:18:18,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 08:18:18,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 08:18:18,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 08:18:18,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 08:18:18,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 08:18:18,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 08:18:18,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 08:18:18,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 08:18:18,119 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 08:18:18,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 08:18:18,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 08:18:18,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 08:18:18,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 08:18:18,159 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 08:18:18,159 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 08:18:18,160 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 08:18:18,160 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 08:18:18,160 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 08:18:18,160 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 08:18:18,161 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 08:18:18,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 08:18:18,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 08:18:18,162 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 08:18:18,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 08:18:18,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 08:18:18,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 08:18:18,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 08:18:18,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 08:18:18,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 08:18:18,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 08:18:18,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 08:18:18,165 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 08:18:18,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 08:18:18,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 08:18:18,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 08:18:18,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 08:18:18,166 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 08:18:18,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 08:18:18,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 08:18:18,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 08:18:18,167 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 08:18:18,168 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 08:18:18,168 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822411a57a10ce043cb0121fce52bdc7e9506783 [2020-10-20 08:18:18,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 08:18:18,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 08:18:18,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 08:18:18,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 08:18:18,388 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 08:18:18,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-10-20 08:18:18,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e4467ef/c1abcdc677df4f46ae4abb78232dbe25/FLAG8dacdd764 [2020-10-20 08:18:18,940 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 08:18:18,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-10-20 08:18:18,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e4467ef/c1abcdc677df4f46ae4abb78232dbe25/FLAG8dacdd764 [2020-10-20 08:18:19,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e4467ef/c1abcdc677df4f46ae4abb78232dbe25 [2020-10-20 08:18:19,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 08:18:19,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 08:18:19,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 08:18:19,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 08:18:19,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 08:18:19,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1b8b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19, skipping insertion in model container [2020-10-20 08:18:19,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 08:18:19,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 08:18:19,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:18:19,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 08:18:19,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:18:19,723 INFO L208 MainTranslator]: Completed translation [2020-10-20 08:18:19,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19 WrapperNode [2020-10-20 08:18:19,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 08:18:19,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 08:18:19,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 08:18:19,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 08:18:19,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 08:18:19,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 08:18:19,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 08:18:19,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 08:18:19,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 08:18:19,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 08:18:19,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 08:18:19,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 08:18:19,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (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 08:18:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 08:18:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 08:18:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 08:18:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 08:18:19,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 08:18:20,113 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 08:18:20,114 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 08:18:20,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:18:20 BoogieIcfgContainer [2020-10-20 08:18:20,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 08:18:20,116 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 08:18:20,116 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 08:18:20,119 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 08:18:20,120 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:18:20,120 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 08:18:19" (1/3) ... [2020-10-20 08:18:20,121 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25947f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:18:20, skipping insertion in model container [2020-10-20 08:18:20,122 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:18:20,122 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19" (2/3) ... [2020-10-20 08:18:20,122 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25947f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:18:20, skipping insertion in model container [2020-10-20 08:18:20,122 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:18:20,122 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:18:20" (3/3) ... [2020-10-20 08:18:20,124 INFO L373 chiAutomizerObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2020-10-20 08:18:20,179 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 08:18:20,179 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 08:18:20,179 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 08:18:20,180 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 08:18:20,180 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 08:18:20,180 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 08:18:20,180 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 08:18:20,180 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 08:18:20,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-10-20 08:18:20,215 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:18:20,215 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:20,215 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:20,227 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:18:20,228 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:18:20,228 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 08:18:20,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-10-20 08:18:20,229 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:18:20,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:20,230 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:20,230 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:18:20,230 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:18:20,238 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~nondet5, main_#t~malloc6.base, main_#t~malloc6.offset, main_~length~0, main_~n~0, main_~nondetArea~0.base, main_~nondetArea~0.offset;main_~length~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~n~0 := main_#t~nondet5;havoc main_#t~nondet5; 13#L522true assume !(main_~length~0 < 1); 7#L522-2true assume !(main_~n~0 < 1); 8#L525-1true assume !(main_~n~0 > main_~length~0);call main_#t~malloc6.base, main_#t~malloc6.offset := #Ultimate.allocOnStack(main_~length~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc6.base, main_#t~malloc6.offset;cbzero_#in~b.base, cbzero_#in~b.offset, cbzero_#in~length := main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~n~0;havoc cbzero_#t~post3.base, cbzero_#t~post3.offset, cbzero_#t~post2, cbzero_~b.base, cbzero_~b.offset, cbzero_~length, cbzero_~p~0.base, cbzero_~p~0.offset;cbzero_~b.base, cbzero_~b.offset := cbzero_#in~b.base, cbzero_#in~b.offset;cbzero_~length := cbzero_#in~length;havoc cbzero_~p~0.base, cbzero_~p~0.offset;cbzero_~p~0.base, cbzero_~p~0.offset := cbzero_~b.base, cbzero_~b.offset; 10#L516-3true [2020-10-20 08:18:20,239 INFO L796 eck$LassoCheckResult]: Loop: 10#L516-3true cbzero_#t~post2 := cbzero_~length;cbzero_~length := cbzero_#t~post2 - 1; 6#L516-1true assume !!(0 != cbzero_#t~post2 % 4294967296);havoc cbzero_#t~post2;cbzero_#t~post3.base, cbzero_#t~post3.offset := cbzero_~p~0.base, cbzero_~p~0.offset;cbzero_~p~0.base, cbzero_~p~0.offset := cbzero_#t~post3.base, 1 + cbzero_#t~post3.offset;call write~int(0, cbzero_#t~post3.base, cbzero_#t~post3.offset, 1);havoc cbzero_#t~post3.base, cbzero_#t~post3.offset; 10#L516-3true [2020-10-20 08:18:20,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:20,244 INFO L82 PathProgramCache]: Analyzing trace with hash 28695882, now seen corresponding path program 1 times [2020-10-20 08:18:20,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:20,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478132923] [2020-10-20 08:18:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:20,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:20,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:20,390 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:20,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:20,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1702, now seen corresponding path program 1 times [2020-10-20 08:18:20,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:20,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979867880] [2020-10-20 08:18:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:20,406 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:20,417 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:20,421 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:20,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:20,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1806939567, now seen corresponding path program 1 times [2020-10-20 08:18:20,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:20,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279944960] [2020-10-20 08:18:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:20,448 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:20,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:20,475 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:20,773 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-20 08:18:20,857 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:18:20,857 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:18:20,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:18:20,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:18:20,858 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:18:20,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:20,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:18:20,859 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:18:20,859 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cbzero-alloca-2.i_Iteration1_Lasso [2020-10-20 08:18:20,859 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:18:20,859 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:18:20,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:20,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:20,897 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 08:18:20,900 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 08:18:20,903 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 08:18:20,906 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 08:18:21,060 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-20 08:18:21,137 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 08:18:21,145 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 08:18:21,148 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 08:18:21,151 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 08:18:21,155 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 08:18:21,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:21,412 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-20 08:18:21,616 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:18:21,621 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 08:18:21,635 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:21,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:21,638 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:21,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:21,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:21,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:21,642 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:21,642 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 08:18:21,645 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) [2020-10-20 08:18:21,692 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 08:18:21,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:21,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:21,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:21,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:21,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:21,696 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:21,696 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:21,698 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) [2020-10-20 08:18:21,742 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 08:18:21,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:21,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:21,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:21,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:21,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:21,746 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:21,746 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:21,749 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 08:18:21,790 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 08:18:21,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:21,792 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:21,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:21,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:21,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:21,793 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:21,794 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:21,795 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 08:18:21,821 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:21,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:21,823 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:21,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:21,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:21,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:21,824 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:21,824 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:21,833 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 08:18:21,870 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 08:18:21,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:21,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:21,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:21,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:21,875 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:21,875 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:21,879 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 08:18:21,915 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 08:18:21,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:21,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:21,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:21,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:21,925 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:21,925 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:21,946 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) [2020-10-20 08:18:21,977 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:21,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:21,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:21,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:21,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:21,985 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:21,985 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:21,992 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) [2020-10-20 08:18:22,029 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:22,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,031 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:22,031 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,031 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,032 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:22,033 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:22,034 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:22,083 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:22,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,098 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:22,099 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:22,121 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:18:22,218 INFO L443 ModelExtractionUtils]: Simplification made 25 calls to the SMT solver. [2020-10-20 08:18:22,219 INFO L444 ModelExtractionUtils]: 10 out of 37 variables were initially zero. Simplification set additionally 22 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:22,225 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:18:22,234 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-20 08:18:22,234 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:18:22,235 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc6.base)_1, ULTIMATE.start_cbzero_~length) = 3*v_rep(select #length ULTIMATE.start_main_#t~malloc6.base)_1 + 2*ULTIMATE.start_cbzero_~length Supporting invariants [2*ULTIMATE.start_cbzero_~length + 3*ULTIMATE.start_cbzero_~p~0.offset >= 0] [2020-10-20 08:18:22,288 INFO L297 tatePredicateManager]: 2 out of 4 supporting invariants were superfluous and have been removed [2020-10-20 08:18:22,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-20 08:18:22,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:22,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 08:18:22,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:22,447 WARN L261 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 08:18:22,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:22,470 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 08:18:22,487 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 08:18:22,488 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2020-10-20 08:18:22,569 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 21 states and 25 transitions. Complement of second has 7 states. [2020-10-20 08:18:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 08:18:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 08:18:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2020-10-20 08:18:22,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 08:18:22,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:22,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-20 08:18:22,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:22,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 08:18:22,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:22,577 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 25 transitions. [2020-10-20 08:18:22,579 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:18:22,582 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2020-10-20 08:18:22,583 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 08:18:22,583 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 08:18:22,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 08:18:22,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:18:22,585 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:18:22,585 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:18:22,585 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:18:22,585 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 08:18:22,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 08:18:22,586 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:18:22,586 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 08:18:22,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 08:18:22 BoogieIcfgContainer [2020-10-20 08:18:22,593 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 08:18:22,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 08:18:22,593 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 08:18:22,594 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 08:18:22,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:18:20" (3/4) ... [2020-10-20 08:18:22,598 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 08:18:22,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 08:18:22,600 INFO L168 Benchmark]: Toolchain (without parser) took 3410.30 ms. Allocated memory was 38.3 MB in the beginning and 54.0 MB in the end (delta: 15.7 MB). Free memory was 21.1 MB in the beginning and 21.0 MB in the end (delta: 82.9 kB). Peak memory consumption was 15.8 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:22,601 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 29.4 MB. Free memory was 15.0 MB in the beginning and 15.0 MB in the end (delta: 45.0 kB). Peak memory consumption was 45.0 kB. Max. memory is 14.3 GB. [2020-10-20 08:18:22,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.75 ms. Allocated memory was 38.3 MB in the beginning and 39.8 MB in the end (delta: 1.6 MB). Free memory was 20.2 MB in the beginning and 20.6 MB in the end (delta: -401.6 kB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:22,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.08 ms. Allocated memory is still 39.8 MB. Free memory was 20.6 MB in the beginning and 18.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:22,604 INFO L168 Benchmark]: Boogie Preprocessor took 22.99 ms. Allocated memory is still 39.8 MB. Free memory was 18.8 MB in the beginning and 17.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:22,605 INFO L168 Benchmark]: RCFGBuilder took 324.41 ms. Allocated memory was 39.8 MB in the beginning and 40.4 MB in the end (delta: 524.3 kB). Free memory was 17.2 MB in the beginning and 16.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:22,606 INFO L168 Benchmark]: BuchiAutomizer took 2476.76 ms. Allocated memory was 40.4 MB in the beginning and 54.0 MB in the end (delta: 13.6 MB). Free memory was 16.1 MB in the beginning and 21.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:22,607 INFO L168 Benchmark]: Witness Printer took 5.16 ms. Allocated memory is still 54.0 MB. Free memory was 21.5 MB in the beginning and 21.0 MB in the end (delta: 531.7 kB). Peak memory consumption was 531.7 kB. Max. memory is 14.3 GB. [2020-10-20 08:18:22,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 29.4 MB. Free memory was 15.0 MB in the beginning and 15.0 MB in the end (delta: 45.0 kB). Peak memory consumption was 45.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 529.75 ms. Allocated memory was 38.3 MB in the beginning and 39.8 MB in the end (delta: 1.6 MB). Free memory was 20.2 MB in the beginning and 20.6 MB in the end (delta: -401.6 kB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 43.08 ms. Allocated memory is still 39.8 MB. Free memory was 20.6 MB in the beginning and 18.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 22.99 ms. Allocated memory is still 39.8 MB. Free memory was 18.8 MB in the beginning and 17.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 324.41 ms. Allocated memory was 39.8 MB in the beginning and 40.4 MB in the end (delta: 524.3 kB). Free memory was 17.2 MB in the beginning and 16.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 2476.76 ms. Allocated memory was 40.4 MB in the beginning and 54.0 MB in the end (delta: 13.6 MB). Free memory was 16.1 MB in the beginning and 21.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * Witness Printer took 5.16 ms. Allocated memory is still 54.0 MB. Free memory was 21.5 MB in the beginning and 21.0 MB in the end (delta: 531.7 kB). Peak memory consumption was 531.7 kB. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 3 * unknown-#length-unknown[__builtin_alloca (length * sizeof(char))] + 2 * length and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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: 9 SDtfs, 13 SDslu, 5 SDs, 0 SdLazy, 11 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital123 mio100 ax114 hnf98 lsp82 ukn93 mio100 lsp58 div158 bol100 ite100 ukn100 eq175 hnf72 smp94 dnf100 smp100 tf100 neg99 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...