./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/loops/while_infinite_loop_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 673762d41977d1832da2fc16ea042415bb97af40 ........................................................................................................................................................................................................................................................................... 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 19:11:53,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 19:11:53,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 19:11:53,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 19:11:53,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 19:11:53,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 19:11:53,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 19:11:53,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 19:11:53,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 19:11:53,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 19:11:53,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 19:11:53,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 19:11:53,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 19:11:53,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 19:11:53,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 19:11:53,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 19:11:53,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 19:11:53,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 19:11:53,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 19:11:53,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 19:11:53,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 19:11:53,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 19:11:53,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 19:11:53,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 19:11:53,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 19:11:53,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 19:11:53,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 19:11:53,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 19:11:53,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 19:11:53,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 19:11:53,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 19:11:53,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 19:11:53,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 19:11:53,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 19:11:53,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 19:11:53,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 19:11:53,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 19:11:53,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 19:11:53,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 19:11:53,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 19:11:53,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 19:11:53,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 19:11:53,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 19:11:53,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 19:11:53,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 19:11:53,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 19:11:53,442 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 19:11:53,443 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 19:11:53,443 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 19:11:53,443 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 19:11:53,443 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 19:11:53,444 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 19:11:53,444 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 19:11:53,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 19:11:53,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 19:11:53,445 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 19:11:53,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 19:11:53,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 19:11:53,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 19:11:53,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 19:11:53,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 19:11:53,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 19:11:53,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 19:11:53,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 19:11:53,447 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 19:11:53,448 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 19:11:53,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 19:11:53,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 19:11:53,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 19:11:53,449 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 19:11:53,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 19:11:53,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 19:11:53,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 19:11:53,450 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 19:11:53,451 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 19:11:53,451 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 673762d41977d1832da2fc16ea042415bb97af40 [2020-10-19 19:11:53,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 19:11:53,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 19:11:53,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 19:11:53,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 19:11:53,846 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 19:11:53,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_2.c [2020-10-19 19:11:53,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adc6bcce/3fe4707471614504aa0570f66d6edd6f/FLAGcfa1794c3 [2020-10-19 19:11:54,417 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 19:11:54,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_2.c [2020-10-19 19:11:54,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adc6bcce/3fe4707471614504aa0570f66d6edd6f/FLAGcfa1794c3 [2020-10-19 19:11:54,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adc6bcce/3fe4707471614504aa0570f66d6edd6f [2020-10-19 19:11:54,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 19:11:54,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 19:11:54,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 19:11:54,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 19:11:54,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 19:11:54,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:11:54" (1/1) ... [2020-10-19 19:11:54,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519b1a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:54, skipping insertion in model container [2020-10-19 19:11:54,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:11:54" (1/1) ... [2020-10-19 19:11:54,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 19:11:54,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 19:11:55,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:11:55,099 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 19:11:55,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:11:55,130 INFO L208 MainTranslator]: Completed translation [2020-10-19 19:11:55,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55 WrapperNode [2020-10-19 19:11:55,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 19:11:55,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 19:11:55,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 19:11:55,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 19:11:55,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (1/1) ... [2020-10-19 19:11:55,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (1/1) ... [2020-10-19 19:11:55,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 19:11:55,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 19:11:55,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 19:11:55,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 19:11:55,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (1/1) ... [2020-10-19 19:11:55,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (1/1) ... [2020-10-19 19:11:55,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (1/1) ... [2020-10-19 19:11:55,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (1/1) ... [2020-10-19 19:11:55,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (1/1) ... [2020-10-19 19:11:55,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (1/1) ... [2020-10-19 19:11:55,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (1/1) ... [2020-10-19 19:11:55,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 19:11:55,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 19:11:55,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 19:11:55,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 19:11:55,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (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 19:11:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 19:11:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 19:11:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 19:11:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 19:11:55,524 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 19:11:55,525 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-19 19:11:55,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:11:55 BoogieIcfgContainer [2020-10-19 19:11:55,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 19:11:55,527 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 19:11:55,528 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 19:11:55,531 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 19:11:55,533 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:11:55,533 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 07:11:54" (1/3) ... [2020-10-19 19:11:55,534 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@76dc323b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:11:55, skipping insertion in model container [2020-10-19 19:11:55,534 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:11:55,534 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:55" (2/3) ... [2020-10-19 19:11:55,535 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@76dc323b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:11:55, skipping insertion in model container [2020-10-19 19:11:55,535 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:11:55,535 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:11:55" (3/3) ... [2020-10-19 19:11:55,537 INFO L373 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_2.c [2020-10-19 19:11:55,585 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 19:11:55,586 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 19:11:55,586 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 19:11:55,586 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 19:11:55,586 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 19:11:55,587 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 19:11:55,587 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 19:11:55,587 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 19:11:55,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-10-19 19:11:55,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 19:11:55,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:11:55,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:11:55,629 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 19:11:55,629 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:11:55,629 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 19:11:55,629 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-10-19 19:11:55,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 19:11:55,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:11:55,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:11:55,632 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 19:11:55,632 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:11:55,640 INFO L794 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 6#L-1true havoc main_#res;havoc main_~x~0;main_~x~0 := 0; 15#L6-2true [2020-10-19 19:11:55,641 INFO L796 eck$LassoCheckResult]: Loop: 15#L6-2true assume !false;__VERIFIER_assert_#in~cond := (if 0 == main_~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3#L6true assume !(0 == __VERIFIER_assert_~cond); 15#L6-2true [2020-10-19 19:11:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:11:55,649 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-19 19:11:55,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:11:55,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729161046] [2020-10-19 19:11:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:11:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:55,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:55,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:55,801 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:11:55,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:11:55,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1322, now seen corresponding path program 1 times [2020-10-19 19:11:55,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:11:55,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474919365] [2020-10-19 19:11:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:11:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:55,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:55,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:55,826 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:11:55,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:11:55,828 INFO L82 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2020-10-19 19:11:55,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:11:55,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757426613] [2020-10-19 19:11:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:11:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:55,846 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:55,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:55,866 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:11:56,188 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-19 19:11:56,302 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-19 19:11:56,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 07:11:56 BoogieIcfgContainer [2020-10-19 19:11:56,330 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 19:11:56,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 19:11:56,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 19:11:56,331 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 19:11:56,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:11:55" (3/4) ... [2020-10-19 19:11:56,336 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 19:11:56,380 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 19:11:56,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 19:11:56,386 INFO L168 Benchmark]: Toolchain (without parser) took 1573.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 961.3 MB in the beginning and 1.1 GB in the end (delta: -100.1 MB). Peak memory consumption was 36.7 MB. Max. memory is 11.5 GB. [2020-10-19 19:11:56,387 INFO L168 Benchmark]: CDTParser took 0.31 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 19:11:56,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.46 ms. Allocated memory is still 1.0 GB. Free memory was 961.3 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 19:11:56,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -182.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2020-10-19 19:11:56,389 INFO L168 Benchmark]: Boogie Preprocessor took 25.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:11:56,394 INFO L168 Benchmark]: RCFGBuilder took 268.24 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:11:56,395 INFO L168 Benchmark]: BuchiAutomizer took 803.05 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: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. [2020-10-19 19:11:56,396 INFO L168 Benchmark]: Witness Printer took 49.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:11:56,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 308.46 ms. Allocated memory is still 1.0 GB. Free memory was 961.3 MB in the beginning and 950.6 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 100.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -182.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 268.24 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 803.05 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: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. * Witness Printer took 49.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * 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 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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: 1]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {cond=1, NULL=0, NULL=0, NULL=0, NULL=2, NULL=0, \result=0, NULL=4, NULL=1, \old(cond)=1, NULL=0, x=0, NULL=3} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 5]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x=0; Loop: [L14] COND TRUE 1 [L6] COND FALSE !(!(cond)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...