./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_1.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_1.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 a34bff9f8dcb1cc5ffc10550dff41d19a382faaa .......................................................................................................................................................................................................................................................................... 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 19:11:51,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 19:11:51,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 19:11:51,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 19:11:51,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 19:11:51,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 19:11:51,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 19:11:51,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 19:11:51,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 19:11:51,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 19:11:51,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 19:11:51,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 19:11:51,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 19:11:51,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 19:11:51,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 19:11:51,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 19:11:51,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 19:11:51,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 19:11:51,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 19:11:51,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 19:11:51,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 19:11:51,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 19:11:51,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 19:11:51,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 19:11:51,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 19:11:51,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 19:11:51,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 19:11:51,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 19:11:51,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 19:11:51,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 19:11:51,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 19:11:51,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 19:11:51,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 19:11:51,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 19:11:51,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 19:11:51,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 19:11:51,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 19:11:51,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 19:11:51,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 19:11:51,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 19:11:51,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 19:11:51,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 19:11:51,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 19:11:51,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 19:11:51,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 19:11:51,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 19:11:51,728 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 19:11:51,728 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 19:11:51,729 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 19:11:51,729 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 19:11:51,729 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 19:11:51,729 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 19:11:51,729 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 19:11:51,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 19:11:51,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 19:11:51,730 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 19:11:51,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 19:11:51,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 19:11:51,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 19:11:51,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 19:11:51,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 19:11:51,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 19:11:51,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 19:11:51,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 19:11:51,732 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 19:11:51,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 19:11:51,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 19:11:51,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 19:11:51,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 19:11:51,733 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 19:11:51,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 19:11:51,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 19:11:51,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 19:11:51,734 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 19:11:51,735 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 19:11:51,735 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 -> a34bff9f8dcb1cc5ffc10550dff41d19a382faaa [2020-10-19 19:11:52,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 19:11:52,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 19:11:52,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 19:11:52,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 19:11:52,088 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 19:11:52,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_1.c [2020-10-19 19:11:52,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1195cb7/5adcd3d0ed2b46908ecd79055d142c59/FLAG065d7e1fa [2020-10-19 19:11:52,573 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 19:11:52,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_1.c [2020-10-19 19:11:52,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1195cb7/5adcd3d0ed2b46908ecd79055d142c59/FLAG065d7e1fa [2020-10-19 19:11:52,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1195cb7/5adcd3d0ed2b46908ecd79055d142c59 [2020-10-19 19:11:52,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 19:11:52,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 19:11:52,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 19:11:52,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 19:11:52,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 19:11:52,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:11:52" (1/1) ... [2020-10-19 19:11:52,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a14673a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:52, skipping insertion in model container [2020-10-19 19:11:52,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:11:52" (1/1) ... [2020-10-19 19:11:52,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 19:11:53,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 19:11:53,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:11:53,231 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 19:11:53,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:11:53,262 INFO L208 MainTranslator]: Completed translation [2020-10-19 19:11:53,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53 WrapperNode [2020-10-19 19:11:53,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 19:11:53,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 19:11:53,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 19:11:53,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 19:11:53,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (1/1) ... [2020-10-19 19:11:53,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (1/1) ... [2020-10-19 19:11:53,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 19:11:53,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 19:11:53,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 19:11:53,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 19:11:53,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (1/1) ... [2020-10-19 19:11:53,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (1/1) ... [2020-10-19 19:11:53,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (1/1) ... [2020-10-19 19:11:53,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (1/1) ... [2020-10-19 19:11:53,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (1/1) ... [2020-10-19 19:11:53,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (1/1) ... [2020-10-19 19:11:53,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (1/1) ... [2020-10-19 19:11:53,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 19:11:53,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 19:11:53,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 19:11:53,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 19:11:53,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (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 19:11:53,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 19:11:53,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 19:11:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 19:11:53,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 19:11:53,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 19:11:53,625 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-19 19:11:53,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:11:53 BoogieIcfgContainer [2020-10-19 19:11:53,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 19:11:53,627 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 19:11:53,627 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 19:11:53,631 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 19:11:53,632 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:11:53,632 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 07:11:52" (1/3) ... [2020-10-19 19:11:53,633 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3dc6b316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:11:53, skipping insertion in model container [2020-10-19 19:11:53,634 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:11:53,634 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:11:53" (2/3) ... [2020-10-19 19:11:53,634 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3dc6b316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:11:53, skipping insertion in model container [2020-10-19 19:11:53,634 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:11:53,635 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:11:53" (3/3) ... [2020-10-19 19:11:53,636 INFO L373 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_1.c [2020-10-19 19:11:53,699 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 19:11:53,700 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 19:11:53,700 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 19:11:53,700 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 19:11:53,700 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 19:11:53,700 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 19:11:53,701 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 19:11:53,701 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 19:11:53,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-10-19 19:11:53,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 19:11:53,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:11:53,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:11:53,752 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 19:11:53,752 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:11:53,752 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 19:11:53,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-10-19 19:11:53,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 19:11:53,754 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:11:53,755 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:11:53,755 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 19:11:53,755 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 19:11:53,763 INFO L794 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 6#L-1true havoc main_#res;havoc main_~x~0;main_~x~0 := 0; 15#L6-2true [2020-10-19 19:11:53,764 INFO L796 eck$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 19:11:53,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:11:53,771 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-19 19:11:53,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:11:53,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254175928] [2020-10-19 19:11:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:11:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:53,894 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:53,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:53,933 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:11:53,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:11:53,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1322, now seen corresponding path program 1 times [2020-10-19 19:11:53,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:11:53,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627374471] [2020-10-19 19:11:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:11:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:53,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:53,976 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:53,980 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:11:53,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:11:53,982 INFO L82 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2020-10-19 19:11:53,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:11:53,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858320651] [2020-10-19 19:11:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:11:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:54,009 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:11:54,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:11:54,026 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:11:54,300 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-19 19:11:54,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 07:11:54 BoogieIcfgContainer [2020-10-19 19:11:54,409 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 19:11:54,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 19:11:54,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 19:11:54,410 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 19:11:54,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:11:53" (3/4) ... [2020-10-19 19:11:54,415 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 19:11:54,471 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 19:11:54,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 19:11:54,477 INFO L168 Benchmark]: Toolchain (without parser) took 1507.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -109.6 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2020-10-19 19:11:54,478 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 19:11:54,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.02 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 19:11:54,486 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -192.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 19:11:54,486 INFO L168 Benchmark]: Boogie Preprocessor took 17.26 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 19:11:54,488 INFO L168 Benchmark]: RCFGBuilder took 257.10 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2020-10-19 19:11:54,489 INFO L168 Benchmark]: BuchiAutomizer took 781.91 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: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 11.5 GB. [2020-10-19 19:11:54,489 INFO L168 Benchmark]: Witness Printer took 61.88 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 19:11:54,504 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 290.02 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 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 87.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -192.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.26 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 257.10 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 781.91 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: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 11.5 GB. * Witness Printer took 61.88 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=3, NULL=1, \old(cond)=1, NULL=0, x=0, NULL=4} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 5]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int x=0; Loop: [L15] COND TRUE 1 [L6] COND FALSE !(!(cond)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...