./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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/recursive-simple/id_i20_o20-2.c -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 25ea15f5ff8abe515b4cb496a6d70ce27fd2ceb9 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 05:45:32,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 05:45:32,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 05:45:32,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 05:45:32,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 05:45:32,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 05:45:32,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 05:45:32,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 05:45:32,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 05:45:32,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 05:45:32,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 05:45:32,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 05:45:32,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 05:45:32,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 05:45:32,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 05:45:32,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 05:45:32,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 05:45:32,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 05:45:32,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 05:45:32,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 05:45:32,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 05:45:32,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 05:45:32,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 05:45:32,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 05:45:32,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 05:45:32,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 05:45:32,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 05:45:32,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 05:45:32,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 05:45:32,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 05:45:32,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 05:45:32,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 05:45:32,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 05:45:32,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 05:45:32,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 05:45:32,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 05:45:32,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 05:45:32,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 05:45:32,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 05:45:32,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 05:45:32,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 05:45:32,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 05:45:32,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 05:45:32,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 05:45:32,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 05:45:32,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 05:45:32,237 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 05:45:32,237 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 05:45:32,238 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 05:45:32,238 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 05:45:32,239 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 05:45:32,239 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 05:45:32,240 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 05:45:32,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 05:45:32,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 05:45:32,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 05:45:32,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 05:45:32,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 05:45:32,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 05:45:32,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 05:45:32,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 05:45:32,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 05:45:32,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 05:45:32,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 05:45:32,243 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 05:45:32,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 05:45:32,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 05:45:32,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 05:45:32,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 05:45:32,244 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 05:45:32,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 05:45:32,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 05:45:32,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 05:45:32,245 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 05:45:32,247 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 05:45:32,247 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25ea15f5ff8abe515b4cb496a6d70ce27fd2ceb9 [2020-10-26 05:45:32,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 05:45:32,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 05:45:32,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 05:45:32,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 05:45:32,680 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 05:45:32,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c [2020-10-26 05:45:32,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65fe723fb/c223ee49c21944009556e9e850ea453f/FLAG401180c35 [2020-10-26 05:45:33,378 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 05:45:33,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i20_o20-2.c [2020-10-26 05:45:33,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65fe723fb/c223ee49c21944009556e9e850ea453f/FLAG401180c35 [2020-10-26 05:45:33,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65fe723fb/c223ee49c21944009556e9e850ea453f [2020-10-26 05:45:33,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 05:45:33,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 05:45:33,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 05:45:33,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 05:45:33,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 05:45:33,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:45:33" (1/1) ... [2020-10-26 05:45:33,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e04bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:33, skipping insertion in model container [2020-10-26 05:45:33,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:45:33" (1/1) ... [2020-10-26 05:45:33,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 05:45:33,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 05:45:34,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:45:34,011 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 05:45:34,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:45:34,041 INFO L208 MainTranslator]: Completed translation [2020-10-26 05:45:34,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34 WrapperNode [2020-10-26 05:45:34,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 05:45:34,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 05:45:34,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 05:45:34,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 05:45:34,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (1/1) ... [2020-10-26 05:45:34,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (1/1) ... [2020-10-26 05:45:34,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 05:45:34,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 05:45:34,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 05:45:34,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 05:45:34,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (1/1) ... [2020-10-26 05:45:34,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (1/1) ... [2020-10-26 05:45:34,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (1/1) ... [2020-10-26 05:45:34,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (1/1) ... [2020-10-26 05:45:34,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (1/1) ... [2020-10-26 05:45:34,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (1/1) ... [2020-10-26 05:45:34,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (1/1) ... [2020-10-26 05:45:34,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 05:45:34,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 05:45:34,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 05:45:34,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 05:45:34,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (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 [2020-10-26 05:45:34,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 05:45:34,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 05:45:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 05:45:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-26 05:45:34,182 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-26 05:45:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 05:45:34,608 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 05:45:34,609 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 05:45:34,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:45:34 BoogieIcfgContainer [2020-10-26 05:45:34,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 05:45:34,613 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 05:45:34,613 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 05:45:34,618 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 05:45:34,620 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:45:34,621 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 05:45:33" (1/3) ... [2020-10-26 05:45:34,622 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8fa79fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:45:34, skipping insertion in model container [2020-10-26 05:45:34,622 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:45:34,623 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:34" (2/3) ... [2020-10-26 05:45:34,623 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8fa79fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:45:34, skipping insertion in model container [2020-10-26 05:45:34,623 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:45:34,624 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:45:34" (3/3) ... [2020-10-26 05:45:34,627 INFO L373 chiAutomizerObserver]: Analyzing ICFG id_i20_o20-2.c [2020-10-26 05:45:34,702 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 05:45:34,702 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 05:45:34,703 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 05:45:34,703 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 05:45:34,703 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 05:45:34,703 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 05:45:34,703 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 05:45:34,704 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 05:45:34,723 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-26 05:45:34,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 05:45:34,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:45:34,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:45:34,761 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:45:34,761 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:45:34,761 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 05:45:34,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-26 05:45:34,765 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 05:45:34,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:45:34,766 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:45:34,766 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:45:34,766 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:45:34,775 INFO L794 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5#L-1true havoc main_#res;havoc main_#t~ret8, main_~input~0, main_~result~0;main_~input~0 := 20; 15#L13true call main_#t~ret8 := id(main_~input~0);< 13#idENTRYtrue [2020-10-26 05:45:34,775 INFO L796 eck$LassoCheckResult]: Loop: 13#idENTRYtrue ~x := #in~x; 10#L7true assume !(0 == ~x); 6#L8true call #t~ret7 := id(~x - 1);< 13#idENTRYtrue [2020-10-26 05:45:34,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:34,788 INFO L82 PathProgramCache]: Analyzing trace with hash 29878, now seen corresponding path program 1 times [2020-10-26 05:45:34,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:45:34,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092366148] [2020-10-26 05:45:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:45:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:34,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:34,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:34,978 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:45:34,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:34,980 INFO L82 PathProgramCache]: Analyzing trace with hash 46806, now seen corresponding path program 1 times [2020-10-26 05:45:34,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:45:34,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502120832] [2020-10-26 05:45:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:45:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:34,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:34,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:34,990 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:45:34,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:34,992 INFO L82 PathProgramCache]: Analyzing trace with hash 890112513, now seen corresponding path program 1 times [2020-10-26 05:45:34,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:45:34,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512794563] [2020-10-26 05:45:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:45:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:35,009 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:35,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:35,028 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:45:35,212 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:45:35,213 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:45:35,213 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:45:35,213 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:45:35,213 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:45:35,213 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:35,213 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:45:35,214 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:45:35,214 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_i20_o20-2.c_Iteration1_Loop [2020-10-26 05:45:35,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:45:35,214 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:45:35,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:35,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:35,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:35,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:35,332 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:45:35,333 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-26 05:45:35,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:35,341 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:35,350 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:35,350 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_#t~ret7=0} Honda state: {id_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-10-26 05:45:35,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:35,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:45:35,380 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:35,380 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_#res=0} Honda state: {id_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-10-26 05:45:35,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:35,408 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-26 05:45:35,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:45:35,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:45:35,520 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:35,521 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_#in~x=-7} Honda state: {id_#in~x=-7} Generalized eigenvectors: [{id_#in~x=0}, {id_#in~x=0}, {id_#in~x=-1}] Lambdas: [2, 0, 1] Nus: [0, 0] 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) [2020-10-26 05:45:35,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:35,549 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:35,554 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:35,554 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {id_~x=0} Honda state: {id_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-10-26 05:45:35,852 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-26 05:45:35,963 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-26 05:45:36,111 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:45:36,111 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:45:36,111 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:45:36,111 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:45:36,112 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:45:36,112 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:36,112 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:45:36,112 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:45:36,112 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_i20_o20-2.c_Iteration1_Lasso [2020-10-26 05:45:36,112 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:45:36,113 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:45:36,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:36,538 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:45:36,544 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-26 05:45:36,551 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 [2020-10-26 05:45:36,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:45:36,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:45:36,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:45:36,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:45:36,560 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 05:45:36,560 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:36,566 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) [2020-10-26 05:45:36,604 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 [2020-10-26 05:45:36,606 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:45:36,607 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:45:36,607 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:45:36,607 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:45:36,607 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:45:36,609 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:45:36,609 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:36,611 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) [2020-10-26 05:45:36,647 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 [2020-10-26 05:45:36,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:45:36,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:45:36,650 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 05:45:36,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:45:36,661 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-10-26 05:45:36,662 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:36,679 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:45:36,705 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-10-26 05:45:36,706 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. 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) [2020-10-26 05:45:36,714 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:36,720 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-10-26 05:45:36,720 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:45:36,721 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(id_#in~x) = 1*id_#in~x Supporting invariants [1*id_#in~x >= 0] [2020-10-26 05:45:36,779 INFO L297 tatePredicateManager]: 7 out of 8 supporting invariants were superfluous and have been removed [2020-10-26 05:45:36,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:45:36,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 05:45:36,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:45:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:45:36,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 05:45:36,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:45:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:45:36,997 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-26 05:45:37,001 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 5 states. [2020-10-26 05:45:37,145 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 5 states. Result 31 states and 36 transitions. Complement of second has 13 states. [2020-10-26 05:45:37,146 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 [2020-10-26 05:45:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 05:45:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-10-26 05:45:37,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-26 05:45:37,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:45:37,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-26 05:45:37,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:45:37,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-26 05:45:37,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:45:37,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2020-10-26 05:45:37,157 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:45:37,160 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-26 05:45:37,161 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 05:45:37,161 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 05:45:37,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 05:45:37,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:45:37,162 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:45:37,162 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:45:37,162 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:45:37,163 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 05:45:37,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 05:45:37,163 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:45:37,163 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 05:45:37,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 05:45:37 BoogieIcfgContainer [2020-10-26 05:45:37,170 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 05:45:37,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 05:45:37,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 05:45:37,171 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 05:45:37,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:45:34" (3/4) ... [2020-10-26 05:45:37,175 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 05:45:37,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 05:45:37,177 INFO L168 Benchmark]: Toolchain (without parser) took 3412.81 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 19.8 MB in the beginning and 19.5 MB in the end (delta: 289.4 kB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:37,178 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 41.9 MB. Free memory was 24.2 MB in the beginning and 24.1 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:45:37,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.64 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.3 MB in the beginning and 27.9 MB in the end (delta: -8.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:37,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.17 ms. Allocated memory is still 50.3 MB. Free memory was 27.9 MB in the beginning and 26.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:45:37,181 INFO L168 Benchmark]: Boogie Preprocessor took 19.73 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 25.8 MB in the end (delta: 846.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:37,183 INFO L168 Benchmark]: RCFGBuilder took 511.00 ms. Allocated memory is still 50.3 MB. Free memory was 25.6 MB in the beginning and 28.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:37,184 INFO L168 Benchmark]: BuchiAutomizer took 2556.57 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.7 MB in the beginning and 20.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:37,184 INFO L168 Benchmark]: Witness Printer took 4.86 ms. Allocated memory is still 60.8 MB. Free memory was 20.1 MB in the beginning and 19.5 MB in the end (delta: 588.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:45:37,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 41.9 MB. Free memory was 24.2 MB in the beginning and 24.1 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.64 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.3 MB in the beginning and 27.9 MB in the end (delta: -8.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.17 ms. Allocated memory is still 50.3 MB. Free memory was 27.9 MB in the beginning and 26.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.73 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 25.8 MB in the end (delta: 846.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 511.00 ms. Allocated memory is still 50.3 MB. Free memory was 25.6 MB in the beginning and 28.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2556.57 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.7 MB in the beginning and 20.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.86 ms. Allocated memory is still 60.8 MB. Free memory was 20.1 MB in the beginning and 19.5 MB in the end (delta: 588.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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 \old(x) 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 0.3s. 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: 5 SDtfs, 9 SDslu, 3 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital66 mio100 ax100 hnf100 lsp89 ukn73 mio100 lsp67 div100 bol100 ite100 ukn100 eq199 hnf96 smp100 dnf145 smp100 tf102 neg94 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 78ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...