./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 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/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 0.2.0-5485861 [2020-10-26 04:14:42,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:14:42,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:14:42,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:14:42,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:14:42,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:14:42,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:14:42,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:14:42,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:14:42,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:14:42,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:14:42,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:14:42,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:14:42,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:14:42,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:14:42,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:14:42,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:14:42,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:14:42,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:14:42,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:14:42,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:14:42,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:14:42,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:14:42,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:14:42,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:14:42,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:14:42,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:14:42,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:14:42,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:14:42,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:14:42,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:14:42,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:14:42,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:14:42,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:14:42,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:14:42,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:14:42,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:14:42,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:14:42,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:14:42,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:14:42,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:14:42,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:14:42,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:14:42,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:14:42,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:14:42,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:14:42,847 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:14:42,847 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:14:42,847 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:14:42,848 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:14:42,848 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:14:42,848 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:14:42,848 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:14:42,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:14:42,849 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:14:42,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:14:42,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:14:42,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:14:42,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:14:42,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:14:42,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:14:42,850 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:14:42,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:14:42,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:14:42,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:14:42,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:14:42,852 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:14:42,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:14:42,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:14:42,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:14:42,853 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:14:42,856 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:14:42,857 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b58543c5c6c478461bb3678f5712726562def78f [2020-10-26 04:14:43,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:14:43,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:14:43,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:14:43,381 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:14:43,381 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:14:43,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/WhileTrue.c [2020-10-26 04:14:43,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef05d1136/0142d4a27b844a999e3cbd2c780e23ab/FLAGe3f713ba1 [2020-10-26 04:14:44,087 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:14:44,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/WhileTrue.c [2020-10-26 04:14:44,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef05d1136/0142d4a27b844a999e3cbd2c780e23ab/FLAGe3f713ba1 [2020-10-26 04:14:44,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef05d1136/0142d4a27b844a999e3cbd2c780e23ab [2020-10-26 04:14:44,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:14:44,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:14:44,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:14:44,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:14:44,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:14:44,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700a042d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44, skipping insertion in model container [2020-10-26 04:14:44,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:14:44,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:14:44,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:14:44,656 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:14:44,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:14:44,684 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:14:44,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44 WrapperNode [2020-10-26 04:14:44,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:14:44,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:14:44,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:14:44,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:14:44,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:14:44,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:14:44,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:14:44,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:14:44,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (1/1) ... [2020-10-26 04:14:44,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:14:44,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:14:44,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:14:44,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:14:44,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:14:44,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:14:44,981 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:14:44,981 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:14:44,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:14:44 BoogieIcfgContainer [2020-10-26 04:14:44,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:14:44,985 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:14:44,985 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:14:44,990 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:14:44,991 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:14:44,991 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:14:44" (1/3) ... [2020-10-26 04:14:44,993 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f30064d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:14:44, skipping insertion in model container [2020-10-26 04:14:44,993 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:14:44,994 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:44" (2/3) ... [2020-10-26 04:14:44,994 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f30064d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:14:44, skipping insertion in model container [2020-10-26 04:14:44,994 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:14:44,995 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:14:44" (3/3) ... [2020-10-26 04:14:44,997 INFO L373 chiAutomizerObserver]: Analyzing ICFG WhileTrue.c [2020-10-26 04:14:45,069 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:14:45,069 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:14:45,069 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:14:45,069 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:14:45,069 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:14:45,070 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:14:45,070 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:14:45,070 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:14:45,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-10-26 04:14:45,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:14:45,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:45,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:45,126 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:14:45,126 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:14:45,126 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:14:45,126 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-10-26 04:14:45,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:14:45,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:45,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:45,128 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:14:45,129 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:14:45,140 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res; 6#L13-2true [2020-10-26 04:14:45,140 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(0 != ~unnamed0~0~true); 6#L13-2true [2020-10-26 04:14:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:45,150 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-26 04:14:45,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:45,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383688463] [2020-10-26 04:14:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:45,276 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:45,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:45,302 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:45,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:45,305 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-10-26 04:14:45,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:45,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51058260] [2020-10-26 04:14:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:45,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:45,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:45,315 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:45,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:45,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-26 04:14:45,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:45,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677400406] [2020-10-26 04:14:45,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:45,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:45,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:45,331 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:45,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:14:45 BoogieIcfgContainer [2020-10-26 04:14:45,404 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:14:45,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:14:45,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:14:45,405 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:14:45,406 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:14:44" (3/4) ... [2020-10-26 04:14:45,409 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-26 04:14:45,450 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:14:45,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:14:45,453 INFO L168 Benchmark]: Toolchain (without parser) took 984.69 ms. Allocated memory is still 48.2 MB. Free memory was 33.1 MB in the beginning and 23.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:14:45,454 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 37.7 MB. Free memory was 17.6 MB in the beginning and 17.6 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:14:45,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.67 ms. Allocated memory is still 48.2 MB. Free memory was 32.5 MB in the beginning and 24.3 MB in the end (delta: 8.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:14:45,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.57 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:14:45,457 INFO L168 Benchmark]: Boogie Preprocessor took 19.62 ms. Allocated memory is still 48.2 MB. Free memory was 23.0 MB in the beginning and 22.2 MB in the end (delta: 801.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:14:45,458 INFO L168 Benchmark]: RCFGBuilder took 241.18 ms. Allocated memory is still 48.2 MB. Free memory was 22.1 MB in the beginning and 27.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:14:45,459 INFO L168 Benchmark]: BuchiAutomizer took 419.49 ms. Allocated memory is still 48.2 MB. Free memory was 27.6 MB in the beginning and 24.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:14:45,460 INFO L168 Benchmark]: Witness Printer took 45.42 ms. Allocated memory is still 48.2 MB. Free memory was 24.6 MB in the beginning and 23.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:14:45,467 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 37.7 MB. Free memory was 17.6 MB in the beginning and 17.6 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 211.67 ms. Allocated memory is still 48.2 MB. Free memory was 32.5 MB in the beginning and 24.3 MB in the end (delta: 8.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.57 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.62 ms. Allocated memory is still 48.2 MB. Free memory was 23.0 MB in the beginning and 22.2 MB in the end (delta: 801.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 241.18 ms. Allocated memory is still 48.2 MB. Free memory was 22.1 MB in the beginning and 27.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 419.49 ms. Allocated memory is still 48.2 MB. Free memory was 27.6 MB in the beginning and 24.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Witness Printer took 45.42 ms. Allocated memory is still 48.2 MB. Free memory was 24.6 MB in the beginning and 23.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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...