./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/WhileTrue.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/WhileTrue.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b58543c5c6c478461bb3678f5712726562def78f .................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:40:44,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:40:44,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:40:44,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:40:44,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:40:44,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:40:44,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:40:44,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:40:44,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:40:44,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:40:44,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:40:44,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:40:44,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:40:44,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:40:44,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:40:44,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:40:44,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:40:44,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:40:44,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:40:44,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:40:44,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:40:44,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:40:44,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:40:44,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:40:44,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:40:44,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:40:44,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:40:44,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:40:44,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:40:44,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:40:44,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:40:44,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:40:44,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:40:44,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:40:44,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:40:44,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:40:44,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:40:44,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:40:44,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:40:44,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:40:44,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:40:44,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:40:44,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:40:44,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:40:44,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:40:44,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:40:44,340 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:40:44,341 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:40:44,341 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:40:44,341 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:40:44,341 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:40:44,341 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:40:44,342 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:40:44,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:40:44,342 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:40:44,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:40:44,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:40:44,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:40:44,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:40:44,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:40:44,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:40:44,346 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:40:44,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:40:44,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:40:44,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:40:44,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:40:44,347 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:40:44,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:40:44,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:40:44,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:40:44,348 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:40:44,349 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:40:44,349 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b58543c5c6c478461bb3678f5712726562def78f [2020-10-19 18:40:44,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:40:44,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:40:44,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:40:44,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:40:44,673 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:40:44,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/WhileTrue.c [2020-10-19 18:40:44,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2685f5b24/6b0c6d0129894064884cc89f8016023d/FLAGb8a46678c [2020-10-19 18:40:45,156 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:40:45,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/WhileTrue.c [2020-10-19 18:40:45,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2685f5b24/6b0c6d0129894064884cc89f8016023d/FLAGb8a46678c [2020-10-19 18:40:45,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2685f5b24/6b0c6d0129894064884cc89f8016023d [2020-10-19 18:40:45,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:40:45,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:40:45,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:40:45,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:40:45,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:40:45,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f00db0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45, skipping insertion in model container [2020-10-19 18:40:45,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:40:45,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:40:45,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:40:45,756 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:40:45,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:40:45,779 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:40:45,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45 WrapperNode [2020-10-19 18:40:45,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:40:45,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:40:45,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:40:45,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:40:45,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:40:45,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:40:45,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:40:45,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:40:45,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (1/1) ... [2020-10-19 18:40:45,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:40:45,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:40:45,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:40:45,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:40:45,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (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 [2020-10-19 18:40:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:40:45,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:40:46,051 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:40:46,051 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:40:46,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:40:46 BoogieIcfgContainer [2020-10-19 18:40:46,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:40:46,054 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:40:46,054 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:40:46,058 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:40:46,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:40:46,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:40:45" (1/3) ... [2020-10-19 18:40:46,060 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c011881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:40:46, skipping insertion in model container [2020-10-19 18:40:46,060 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:40:46,060 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:45" (2/3) ... [2020-10-19 18:40:46,061 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c011881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:40:46, skipping insertion in model container [2020-10-19 18:40:46,061 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:40:46,061 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:40:46" (3/3) ... [2020-10-19 18:40:46,063 INFO L373 chiAutomizerObserver]: Analyzing ICFG WhileTrue.c [2020-10-19 18:40:46,111 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:40:46,111 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:40:46,112 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:40:46,112 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:40:46,112 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:40:46,112 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:40:46,112 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:40:46,112 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:40:46,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-10-19 18:40:46,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-19 18:40:46,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:40:46,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:40:46,150 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:40:46,150 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-19 18:40:46,150 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:40:46,151 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-10-19 18:40:46,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-19 18:40:46,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:40:46,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:40:46,152 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:40:46,152 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-19 18:40:46,158 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res; 6#L13-2true [2020-10-19 18:40:46,159 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(0 != ~unnamed0~0~true); 6#L13-2true [2020-10-19 18:40:46,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:46,165 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-19 18:40:46,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:40:46,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041015863] [2020-10-19 18:40:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:40:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:46,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:46,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:46,265 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:40:46,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:46,266 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-10-19 18:40:46,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:40:46,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546678149] [2020-10-19 18:40:46,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:40:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:46,272 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:46,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:46,274 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:40:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:46,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-19 18:40:46,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:40:46,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736937742] [2020-10-19 18:40:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:40:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:46,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:46,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:46,288 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:40:46,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:40:46 BoogieIcfgContainer [2020-10-19 18:40:46,348 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:40:46,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:40:46,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:40:46,348 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:40:46,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:40:46" (3/4) ... [2020-10-19 18:40:46,352 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 18:40:46,391 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:40:46,391 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:40:46,394 INFO L168 Benchmark]: Toolchain (without parser) took 832.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -132.5 MB). Peak memory consumption was 3.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:46,394 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:40:46,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.51 ms. Allocated memory is still 1.0 GB. Free memory was 955.9 MB in the beginning and 945.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:46,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.09 ms. Allocated memory is still 1.0 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:40:46,397 INFO L168 Benchmark]: Boogie Preprocessor took 73.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:46,398 INFO L168 Benchmark]: RCFGBuilder took 167.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:46,398 INFO L168 Benchmark]: BuchiAutomizer took 293.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:46,399 INFO L168 Benchmark]: Witness Printer took 42.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:46,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 212.51 ms. Allocated memory is still 1.0 GB. Free memory was 955.9 MB in the beginning and 945.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.09 ms. Allocated memory is still 1.0 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 167.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 293.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Witness Printer took 42.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\result=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: Loop: [L13] COND TRUE \read(true) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...