./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/n.c40.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/n.c40.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 e954357898f010ea28e7deb5d5a1ae907cf090e4 ...................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 02:05:14,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 02:05:14,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 02:05:14,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 02:05:14,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 02:05:14,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 02:05:14,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 02:05:14,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 02:05:14,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 02:05:14,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 02:05:14,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 02:05:14,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 02:05:14,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 02:05:14,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 02:05:14,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 02:05:14,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 02:05:14,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 02:05:14,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 02:05:14,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 02:05:14,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 02:05:14,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 02:05:14,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 02:05:14,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 02:05:14,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 02:05:14,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 02:05:14,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 02:05:14,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 02:05:14,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 02:05:14,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 02:05:14,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 02:05:14,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 02:05:14,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 02:05:14,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 02:05:15,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 02:05:15,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 02:05:15,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 02:05:15,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 02:05:15,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 02:05:15,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 02:05:15,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 02:05:15,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 02:05:15,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-07-29 02:05:15,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 02:05:15,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 02:05:15,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 02:05:15,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 02:05:15,051 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 02:05:15,051 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 02:05:15,052 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 02:05:15,052 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 02:05:15,052 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 02:05:15,053 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 02:05:15,054 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 02:05:15,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 02:05:15,055 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 02:05:15,055 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 02:05:15,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 02:05:15,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 02:05:15,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 02:05:15,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 02:05:15,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 02:05:15,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 02:05:15,057 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 02:05:15,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 02:05:15,058 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 02:05:15,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 02:05:15,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 02:05:15,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 02:05:15,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 02:05:15,059 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 02:05:15,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 02:05:15,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 02:05:15,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 02:05:15,061 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 02:05:15,063 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 02:05:15,063 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 -> e954357898f010ea28e7deb5d5a1ae907cf090e4 [2020-07-29 02:05:15,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 02:05:15,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 02:05:15,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 02:05:15,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 02:05:15,413 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 02:05:15,413 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/n.c40.c [2020-07-29 02:05:15,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ff5ac96b/ebd536f39a944a07ac885cfa36f821c1/FLAG1715e4c0d [2020-07-29 02:05:15,893 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 02:05:15,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/n.c40.c [2020-07-29 02:05:15,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ff5ac96b/ebd536f39a944a07ac885cfa36f821c1/FLAG1715e4c0d [2020-07-29 02:05:16,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ff5ac96b/ebd536f39a944a07ac885cfa36f821c1 [2020-07-29 02:05:16,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 02:05:16,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 02:05:16,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 02:05:16,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 02:05:16,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 02:05:16,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abd86f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16, skipping insertion in model container [2020-07-29 02:05:16,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 02:05:16,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 02:05:16,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:05:16,568 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 02:05:16,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:05:16,611 INFO L208 MainTranslator]: Completed translation [2020-07-29 02:05:16,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16 WrapperNode [2020-07-29 02:05:16,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 02:05:16,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 02:05:16,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 02:05:16,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 02:05:16,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 02:05:16,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 02:05:16,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 02:05:16,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 02:05:16,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (1/1) ... [2020-07-29 02:05:16,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 02:05:16,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 02:05:16,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 02:05:16,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 02:05:16,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (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 [2020-07-29 02:05:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-29 02:05:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 02:05:16,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 02:05:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-29 02:05:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-29 02:05:17,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 02:05:17,179 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-29 02:05:17,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:05:17 BoogieIcfgContainer [2020-07-29 02:05:17,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 02:05:17,184 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 02:05:17,184 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 02:05:17,188 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 02:05:17,189 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:05:17,189 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 02:05:16" (1/3) ... [2020-07-29 02:05:17,190 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37c13bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:05:17, skipping insertion in model container [2020-07-29 02:05:17,190 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:05:17,191 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:05:16" (2/3) ... [2020-07-29 02:05:17,191 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37c13bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:05:17, skipping insertion in model container [2020-07-29 02:05:17,191 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:05:17,191 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:05:17" (3/3) ... [2020-07-29 02:05:17,193 INFO L371 chiAutomizerObserver]: Analyzing ICFG n.c40.c [2020-07-29 02:05:17,254 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 02:05:17,254 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 02:05:17,255 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 02:05:17,255 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 02:05:17,255 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 02:05:17,255 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 02:05:17,255 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 02:05:17,256 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 02:05:17,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-07-29 02:05:17,297 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-29 02:05:17,297 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:17,297 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:17,305 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 02:05:17,305 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-29 02:05:17,306 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 02:05:17,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-07-29 02:05:17,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-29 02:05:17,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:05:17,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:05:17,310 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 02:05:17,310 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-29 02:05:17,319 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#x~0.base, ~#x~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#x~0.base);call ~#y~0.base, ~#y~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#y~0.base);~i~0 := 0;~j~0 := 0;~k~0 := 0; 3#L-1true havoc main_#res;havoc main_#t~nondet0, main_#t~mem2, main_#t~post3, main_#t~mem1, main_#t~mem4;~k~0 := main_#t~nondet0;havoc main_#t~nondet0;~i~0 := 0; 13#L12-3true [2020-07-29 02:05:17,319 INFO L796 eck$LassoCheckResult]: Loop: 13#L12-3true call main_#t~mem1 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1); 5#L12-1true assume !!(0 != main_#t~mem1);havoc main_#t~mem1;call main_#t~mem2 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1);call write~int(main_#t~mem2, ~#y~0.base, ~#y~0.offset + ~i~0, 1);havoc main_#t~mem2;main_#t~post3 := ~i~0;~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 13#L12-3true [2020-07-29 02:05:17,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:17,326 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-07-29 02:05:17,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:17,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654407255] [2020-07-29 02:05:17,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:17,438 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:17,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:17,475 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:05:17,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:17,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2020-07-29 02:05:17,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:17,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436477949] [2020-07-29 02:05:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:17,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:05:17,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:05:17,505 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:05:17,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:05:17,507 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-07-29 02:05:17,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:05:17,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64440371] [2020-07-29 02:05:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:05:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:05:17,645 INFO L280 TraceCheckUtils]: 0: Hoare triple {20#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#x~0.base, ~#x~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#x~0.base);call ~#y~0.base, ~#y~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#y~0.base);~i~0 := 0;~j~0 := 0;~k~0 := 0; {22#(= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|))} is VALID [2020-07-29 02:05:17,646 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#(= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|))} havoc main_#res;havoc main_#t~nondet0, main_#t~mem2, main_#t~post3, main_#t~mem1, main_#t~mem4;~k~0 := main_#t~nondet0;havoc main_#t~nondet0;~i~0 := 0; {22#(= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|))} is VALID [2020-07-29 02:05:17,648 INFO L280 TraceCheckUtils]: 2: Hoare triple {22#(= ((as const (Array Int Int)) 0) (select |#memory_int| |~#x~0.base|))} call main_#t~mem1 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1); {23#(= 0 |ULTIMATE.start_main_#t~mem1|)} is VALID [2020-07-29 02:05:17,650 INFO L280 TraceCheckUtils]: 3: Hoare triple {23#(= 0 |ULTIMATE.start_main_#t~mem1|)} assume !!(0 != main_#t~mem1);havoc main_#t~mem1;call main_#t~mem2 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1);call write~int(main_#t~mem2, ~#y~0.base, ~#y~0.offset + ~i~0, 1);havoc main_#t~mem2;main_#t~post3 := ~i~0;~i~0 := 1 + main_#t~post3;havoc main_#t~post3; {21#false} is VALID [2020-07-29 02:05:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:05:17,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64440371] [2020-07-29 02:05:17,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 02:05:17,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-29 02:05:17,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907163434] [2020-07-29 02:05:17,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 02:05:17,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-29 02:05:17,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-29 02:05:17,801 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-07-29 02:05:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:05:17,882 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-29 02:05:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-29 02:05:17,884 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 02:05:17,895 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:05:17,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 12 transitions. [2020-07-29 02:05:17,899 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:05:17,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2020-07-29 02:05:17,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 02:05:17,904 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 02:05:17,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 02:05:17,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:05:17,906 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:17,906 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:17,906 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:05:17,906 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 02:05:17,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-29 02:05:17,907 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:05:17,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 02:05:17,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 02:05:17 BoogieIcfgContainer [2020-07-29 02:05:17,913 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 02:05:17,914 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 02:05:17,914 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 02:05:17,914 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 02:05:17,915 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:05:17" (3/4) ... [2020-07-29 02:05:17,919 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-29 02:05:17,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 02:05:17,923 INFO L168 Benchmark]: Toolchain (without parser) took 1635.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 954.9 MB in the beginning and 1.0 GB in the end (delta: -92.1 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:17,924 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:05:17,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.39 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:17,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:17,927 INFO L168 Benchmark]: Boogie Preprocessor took 28.07 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. [2020-07-29 02:05:17,928 INFO L168 Benchmark]: RCFGBuilder took 441.90 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:17,928 INFO L168 Benchmark]: BuchiAutomizer took 729.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:05:17,929 INFO L168 Benchmark]: Witness Printer took 6.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:05:17,933 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.39 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 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 100.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.07 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 441.90 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 729.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 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 Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic). 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 8 SDslu, 7 SDs, 0 SdLazy, 8 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...