./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e19ca921 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/array-memsafety/add_last-alloca-1.i -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 870a7e5617be5a547f8d530603b5c27ad6cbb74bb05a83654285fee7bbb92753 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 20:40:24,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 20:40:24,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 20:40:24,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 20:40:24,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 20:40:24,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 20:40:24,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 20:40:24,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 20:40:24,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 20:40:24,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 20:40:24,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 20:40:24,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 20:40:24,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 20:40:24,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 20:40:24,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 20:40:24,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 20:40:24,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 20:40:24,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 20:40:24,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 20:40:24,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 20:40:24,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 20:40:24,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 20:40:24,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 20:40:24,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 20:40:24,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 20:40:24,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 20:40:24,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 20:40:24,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 20:40:24,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 20:40:24,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 20:40:24,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 20:40:24,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 20:40:24,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 20:40:24,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 20:40:24,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 20:40:24,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 20:40:24,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 20:40:24,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 20:40:24,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 20:40:24,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 20:40:24,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 20:40:24,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-22 20:40:24,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 20:40:24,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 20:40:24,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 20:40:24,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 20:40:24,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 20:40:24,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 20:40:24,373 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 20:40:24,373 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 20:40:24,373 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 20:40:24,374 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 20:40:24,375 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 20:40:24,375 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 20:40:24,375 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 20:40:24,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 20:40:24,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 20:40:24,376 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 20:40:24,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 20:40:24,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 20:40:24,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 20:40:24,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 20:40:24,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 20:40:24,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 20:40:24,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 20:40:24,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 20:40:24,377 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 20:40:24,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 20:40:24,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 20:40:24,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 20:40:24,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 20:40:24,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 20:40:24,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 20:40:24,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 20:40:24,380 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 20:40:24,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 870a7e5617be5a547f8d530603b5c27ad6cbb74bb05a83654285fee7bbb92753 [2021-12-22 20:40:24,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 20:40:24,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 20:40:24,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 20:40:24,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 20:40:24,624 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 20:40:24,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i [2021-12-22 20:40:24,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a531f3d0a/4a255bb30c524b2bbb99537f325c8fe4/FLAG2a4a0bd88 [2021-12-22 20:40:25,088 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 20:40:25,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/add_last-alloca-1.i [2021-12-22 20:40:25,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a531f3d0a/4a255bb30c524b2bbb99537f325c8fe4/FLAG2a4a0bd88 [2021-12-22 20:40:25,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a531f3d0a/4a255bb30c524b2bbb99537f325c8fe4 [2021-12-22 20:40:25,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 20:40:25,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 20:40:25,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 20:40:25,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 20:40:25,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 20:40:25,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a7aa63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25, skipping insertion in model container [2021-12-22 20:40:25,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 20:40:25,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 20:40:25,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 20:40:25,423 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 20:40:25,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 20:40:25,471 INFO L208 MainTranslator]: Completed translation [2021-12-22 20:40:25,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25 WrapperNode [2021-12-22 20:40:25,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 20:40:25,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 20:40:25,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 20:40:25,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 20:40:25,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,521 INFO L137 Inliner]: procedures = 115, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-12-22 20:40:25,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 20:40:25,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 20:40:25,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 20:40:25,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 20:40:25,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 20:40:25,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 20:40:25,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 20:40:25,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 20:40:25,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (1/1) ... [2021-12-22 20:40:25,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:40:25,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 20:40:25,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 20:40:25,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-22 20:40:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 20:40:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 20:40:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 20:40:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 20:40:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 20:40:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 20:40:25,740 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 20:40:25,742 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 20:40:25,840 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 20:40:25,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 20:40:25,845 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 20:40:25,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:40:25 BoogieIcfgContainer [2021-12-22 20:40:25,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 20:40:25,847 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 20:40:25,847 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 20:40:25,850 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 20:40:25,851 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:40:25,851 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 08:40:25" (1/3) ... [2021-12-22 20:40:25,852 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d65dc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 08:40:25, skipping insertion in model container [2021-12-22 20:40:25,852 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:40:25,852 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:25" (2/3) ... [2021-12-22 20:40:25,852 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d65dc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 08:40:25, skipping insertion in model container [2021-12-22 20:40:25,852 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:40:25,852 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:40:25" (3/3) ... [2021-12-22 20:40:25,853 INFO L388 chiAutomizerObserver]: Analyzing ICFG add_last-alloca-1.i [2021-12-22 20:40:25,887 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 20:40:25,887 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 20:40:25,887 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 20:40:25,887 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 20:40:25,887 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 20:40:25,888 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 20:40:25,888 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 20:40:25,888 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 20:40:25,899 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:40:25,920 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-22 20:40:25,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:40:25,920 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:40:25,926 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-22 20:40:25,926 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 20:40:25,926 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 20:40:25,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:40:25,928 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-22 20:40:25,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:40:25,928 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:40:25,928 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-22 20:40:25,929 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 20:40:25,934 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet5#1, main_#t~post4#1, main_~k~0#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~post10#1.base, main_#t~post10#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 11#L515true assume !(main_~length~0#1 < 1 || main_~length~0#1 % 4294967296 >= 536870911); 8#L515-2true call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset; 14#L517true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~a~0#1.base, main_~a~0#1.offset := main_~arr~0#1.base, main_~arr~0#1.offset;main_~k~0#1 := 0; 6#L520-3true [2021-12-22 20:40:25,934 INFO L793 eck$LassoCheckResult]: Loop: 6#L520-3true assume !!(main_~k~0#1 < main_~length~0#1);call write~int(main_#t~nondet5#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~k~0#1, 4);havoc main_#t~nondet5#1; 12#L520-2true main_#t~post4#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 6#L520-3true [2021-12-22 20:40:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:25,939 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2021-12-22 20:40:25,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:25,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886564255] [2021-12-22 20:40:25,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:25,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:26,050 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:40:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:26,084 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:40:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2021-12-22 20:40:26,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:26,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482498793] [2021-12-22 20:40:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:26,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:26,120 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:40:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:26,139 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:40:26,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2021-12-22 20:40:26,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:26,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979507076] [2021-12-22 20:40:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:26,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:26,177 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:40:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:26,207 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:40:26,554 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 20:40:26,555 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 20:40:26,556 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 20:40:26,556 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 20:40:26,556 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 20:40:26,556 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:40:26,557 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 20:40:26,557 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 20:40:26,557 INFO L133 ssoRankerPreferences]: Filename of dumped script: add_last-alloca-1.i_Iteration1_Lasso [2021-12-22 20:40:26,557 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 20:40:26,557 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 20:40:26,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:26,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:27,101 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 20:40:27,105 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 20:40:27,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:40:27,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 20:40:27,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 20:40:27,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-22 20:40:27,120 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 20:40:27,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 20:40:27,129 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 20:40:27,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 20:40:27,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 20:40:27,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 20:40:27,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 20:40:27,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 20:40:27,149 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 20:40:27,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-22 20:40:27,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:40:27,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 20:40:27,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 20:40:27,192 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 20:40:27,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 20:40:27,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 20:40:27,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 20:40:27,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 20:40:27,206 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 20:40:27,206 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 20:40:27,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-22 20:40:27,221 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 20:40:27,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-22 20:40:27,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:40:27,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 20:40:27,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 20:40:27,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-22 20:40:27,245 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 20:40:27,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 20:40:27,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 20:40:27,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 20:40:27,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 20:40:27,261 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 20:40:27,261 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 20:40:27,274 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 20:40:27,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-22 20:40:27,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:40:27,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 20:40:27,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 20:40:27,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-22 20:40:27,295 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 20:40:27,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 20:40:27,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 20:40:27,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 20:40:27,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 20:40:27,315 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 20:40:27,316 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 20:40:27,343 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 20:40:27,394 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2021-12-22 20:40:27,395 INFO L444 ModelExtractionUtils]: 7 out of 25 variables were initially zero. Simplification set additionally 15 variables to zero. [2021-12-22 20:40:27,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:40:27,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 20:40:27,411 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 20:40:27,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-22 20:40:27,464 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 20:40:27,492 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-22 20:40:27,492 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 20:40:27,493 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length~0#1, ULTIMATE.start_main_~k~0#1) = 1*ULTIMATE.start_main_~length~0#1 - 1*ULTIMATE.start_main_~k~0#1 Supporting invariants [] [2021-12-22 20:40:27,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-22 20:40:27,524 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-12-22 20:40:27,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:40:27,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 20:40:27,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 20:40:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:40:27,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 20:40:27,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 20:40:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:40:27,655 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-22 20:40:27,656 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:40:27,716 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 41 transitions. Complement of second has 7 states. [2021-12-22 20:40:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-22 20:40:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:40:27,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2021-12-22 20:40:27,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-22 20:40:27,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 20:40:27,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 2 letters. [2021-12-22 20:40:27,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 20:40:27,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 4 letters. [2021-12-22 20:40:27,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 20:40:27,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 41 transitions. [2021-12-22 20:40:27,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 20:40:27,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 11 states and 14 transitions. [2021-12-22 20:40:27,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-22 20:40:27,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-22 20:40:27,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2021-12-22 20:40:27,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:40:27,741 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-22 20:40:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2021-12-22 20:40:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-12-22 20:40:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:40:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-12-22 20:40:27,761 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-22 20:40:27,762 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-22 20:40:27,762 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 20:40:27,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2021-12-22 20:40:27,763 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 20:40:27,763 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:40:27,763 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:40:27,764 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-22 20:40:27,764 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 20:40:27,764 INFO L791 eck$LassoCheckResult]: Stem: 106#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 107#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet5#1, main_#t~post4#1, main_~k~0#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~post10#1.base, main_#t~post10#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 113#L515 assume !(main_~length~0#1 < 1 || main_~length~0#1 % 4294967296 >= 536870911); 111#L515-2 call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset; 112#L517 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~a~0#1.base, main_~a~0#1.offset := main_~arr~0#1.base, main_~arr~0#1.offset;main_~k~0#1 := 0; 108#L520-3 assume !(main_~k~0#1 < main_~length~0#1); 105#L525-2 [2021-12-22 20:40:27,765 INFO L793 eck$LassoCheckResult]: Loop: 105#L525-2 call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~length~0#1 - 4, 4); 104#L525 assume !!(main_#t~mem6#1 != main_#t~mem7#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~length~0#1 - 4, 4);call write~int(main_#t~mem8#1 + main_#t~mem9#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem8#1;havoc main_#t~mem9#1;main_#t~post10#1.base, main_#t~post10#1.offset := main_~a~0#1.base, main_~a~0#1.offset;main_~a~0#1.base, main_~a~0#1.offset := main_#t~post10#1.base, 4 + main_#t~post10#1.offset;havoc main_#t~post10#1.base, main_#t~post10#1.offset; 105#L525-2 [2021-12-22 20:40:27,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash 889568363, now seen corresponding path program 1 times [2021-12-22 20:40:27,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:27,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64021871] [2021-12-22 20:40:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:27,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:40:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:40:27,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 20:40:27,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64021871] [2021-12-22 20:40:27,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64021871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 20:40:27,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 20:40:27,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 20:40:27,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878279646] [2021-12-22 20:40:27,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 20:40:27,831 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 20:40:27,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:27,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1958, now seen corresponding path program 1 times [2021-12-22 20:40:27,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:27,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295037363] [2021-12-22 20:40:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:27,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:27,867 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:40:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:27,878 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:40:27,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-22 20:40:27,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 20:40:27,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 20:40:27,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 20:40:27,989 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:40:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 20:40:28,013 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-12-22 20:40:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 20:40:28,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2021-12-22 20:40:28,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 20:40:28,015 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2021-12-22 20:40:28,015 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-22 20:40:28,015 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-22 20:40:28,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2021-12-22 20:40:28,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:40:28,016 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-12-22 20:40:28,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2021-12-22 20:40:28,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-12-22 20:40:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:40:28,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-12-22 20:40:28,017 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-12-22 20:40:28,018 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-12-22 20:40:28,018 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-22 20:40:28,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2021-12-22 20:40:28,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 20:40:28,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:40:28,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:40:28,019 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:40:28,019 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 20:40:28,019 INFO L791 eck$LassoCheckResult]: Stem: 134#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 135#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet5#1, main_#t~post4#1, main_~k~0#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~post10#1.base, main_#t~post10#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 141#L515 assume !(main_~length~0#1 < 1 || main_~length~0#1 % 4294967296 >= 536870911); 139#L515-2 call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset; 140#L517 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~a~0#1.base, main_~a~0#1.offset := main_~arr~0#1.base, main_~arr~0#1.offset;main_~k~0#1 := 0; 136#L520-3 assume !!(main_~k~0#1 < main_~length~0#1);call write~int(main_#t~nondet5#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~k~0#1, 4);havoc main_#t~nondet5#1; 137#L520-2 main_#t~post4#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 138#L520-3 assume !(main_~k~0#1 < main_~length~0#1); 133#L525-2 [2021-12-22 20:40:28,019 INFO L793 eck$LassoCheckResult]: Loop: 133#L525-2 call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~length~0#1 - 4, 4); 132#L525 assume !!(main_#t~mem6#1 != main_#t~mem7#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~length~0#1 - 4, 4);call write~int(main_#t~mem8#1 + main_#t~mem9#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem8#1;havoc main_#t~mem9#1;main_#t~post10#1.base, main_#t~post10#1.offset := main_~a~0#1.base, main_~a~0#1.offset;main_~a~0#1.base, main_~a~0#1.offset := main_#t~post10#1.base, 4 + main_#t~post10#1.offset;havoc main_#t~post10#1.base, main_#t~post10#1.offset; 133#L525-2 [2021-12-22 20:40:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash 176707625, now seen corresponding path program 1 times [2021-12-22 20:40:28,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:28,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332508558] [2021-12-22 20:40:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:28,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:28,034 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:40:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:28,044 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:40:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1958, now seen corresponding path program 2 times [2021-12-22 20:40:28,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:28,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335640081] [2021-12-22 20:40:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:28,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:28,052 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:40:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:28,057 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:40:28,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:28,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1982663218, now seen corresponding path program 1 times [2021-12-22 20:40:28,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:28,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020922632] [2021-12-22 20:40:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:28,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:40:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:40:28,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 20:40:28,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020922632] [2021-12-22 20:40:28,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020922632] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 20:40:28,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420247031] [2021-12-22 20:40:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:28,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 20:40:28,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 20:40:28,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 20:40:28,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 20:40:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:40:28,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-22 20:40:28,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 20:40:28,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-22 20:40:28,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 20:40:28,631 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 20:40:28,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2021-12-22 20:40:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:40:28,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 20:40:28,708 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 20:40:28,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 70 [2021-12-22 20:40:28,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-12-22 20:40:28,818 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 20:40:28,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 101 [2021-12-22 20:40:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:40:28,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420247031] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 20:40:28,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 20:40:28,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2021-12-22 20:40:28,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276385770] [2021-12-22 20:40:28,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 20:40:28,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 20:40:28,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 20:40:28,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-12-22 20:40:28,970 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:40:29,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 20:40:29,093 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-12-22 20:40:29,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 20:40:29,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2021-12-22 20:40:29,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 20:40:29,097 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 15 transitions. [2021-12-22 20:40:29,098 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-22 20:40:29,098 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-22 20:40:29,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2021-12-22 20:40:29,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:40:29,099 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-12-22 20:40:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2021-12-22 20:40:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-12-22 20:40:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:40:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-12-22 20:40:29,101 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-12-22 20:40:29,101 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-12-22 20:40:29,101 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-22 20:40:29,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2021-12-22 20:40:29,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 20:40:29,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:40:29,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:40:29,103 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-22 20:40:29,103 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 20:40:29,104 INFO L791 eck$LassoCheckResult]: Stem: 241#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 242#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet5#1, main_#t~post4#1, main_~k~0#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~post10#1.base, main_#t~post10#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 249#L515 assume !(main_~length~0#1 < 1 || main_~length~0#1 % 4294967296 >= 536870911); 247#L515-2 call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset; 248#L517 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~a~0#1.base, main_~a~0#1.offset := main_~arr~0#1.base, main_~arr~0#1.offset;main_~k~0#1 := 0; 243#L520-3 assume !!(main_~k~0#1 < main_~length~0#1);call write~int(main_#t~nondet5#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~k~0#1, 4);havoc main_#t~nondet5#1; 244#L520-2 main_#t~post4#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 245#L520-3 assume !!(main_~k~0#1 < main_~length~0#1);call write~int(main_#t~nondet5#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~k~0#1, 4);havoc main_#t~nondet5#1; 246#L520-2 main_#t~post4#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 250#L520-3 assume !(main_~k~0#1 < main_~length~0#1); 240#L525-2 [2021-12-22 20:40:29,104 INFO L793 eck$LassoCheckResult]: Loop: 240#L525-2 call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~length~0#1 - 4, 4); 239#L525 assume !!(main_#t~mem6#1 != main_#t~mem7#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~length~0#1 - 4, 4);call write~int(main_#t~mem8#1 + main_#t~mem9#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem8#1;havoc main_#t~mem9#1;main_#t~post10#1.base, main_#t~post10#1.offset := main_~a~0#1.base, main_~a~0#1.offset;main_~a~0#1.base, main_~a~0#1.offset := main_#t~post10#1.base, 4 + main_#t~post10#1.offset;havoc main_#t~post10#1.base, main_#t~post10#1.offset; 240#L525-2 [2021-12-22 20:40:29,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1982661529, now seen corresponding path program 2 times [2021-12-22 20:40:29,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:29,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116768410] [2021-12-22 20:40:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:29,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:29,127 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:40:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:29,138 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:40:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:29,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1958, now seen corresponding path program 3 times [2021-12-22 20:40:29,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:29,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175426475] [2021-12-22 20:40:29,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:29,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:29,159 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:40:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:29,164 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:40:29,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:40:29,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1627751052, now seen corresponding path program 2 times [2021-12-22 20:40:29,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:40:29,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643683322] [2021-12-22 20:40:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:40:29,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:40:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:29,183 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:40:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:40:29,197 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:40:29,463 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 20:40:29,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 20:40:29,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 20:40:29,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 20:40:29,463 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 20:40:29,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:40:29,463 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 20:40:29,463 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 20:40:29,463 INFO L133 ssoRankerPreferences]: Filename of dumped script: add_last-alloca-1.i_Iteration4_Lasso [2021-12-22 20:40:29,463 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 20:40:29,463 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 20:40:29,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 20:40:29,526 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.IllegalArgumentException at de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) at java.base/java.util.AbstractMap.putAll(AbstractMap.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.PureSubstitution.(PureSubstitution.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.(Substitution.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.apply(Substitution.java:59) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceMapReads(MapEliminator.java:518) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.getRewrittenTransFormula(MapEliminator.java:342) at de.uni_freiburg.informatik.ultimate.lassoranker.preprocessors.MapEliminationLassoPreprocessor.process(MapEliminationLassoPreprocessor.java:109) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.applyPreprocessor(LassoBuilder.java:154) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.preprocess(LassoBuilder.java:262) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:280) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:953) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:862) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-22 20:40:29,534 INFO L158 Benchmark]: Toolchain (without parser) took 4417.47ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 61.6MB in the beginning and 75.1MB in the end (delta: -13.4MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2021-12-22 20:40:29,535 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory was 49.4MB in the beginning and 49.4MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 20:40:29,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.48ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 61.6MB in the beginning and 81.4MB in the end (delta: -19.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 20:40:29,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.46ms. Allocated memory is still 109.1MB. Free memory was 81.4MB in the beginning and 79.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 20:40:29,536 INFO L158 Benchmark]: Boogie Preprocessor took 33.52ms. Allocated memory is still 109.1MB. Free memory was 79.3MB in the beginning and 78.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 20:40:29,536 INFO L158 Benchmark]: RCFGBuilder took 289.57ms. Allocated memory is still 109.1MB. Free memory was 78.2MB in the beginning and 67.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 20:40:29,537 INFO L158 Benchmark]: BuchiAutomizer took 3685.82ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 67.3MB in the beginning and 75.1MB in the end (delta: -7.8MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2021-12-22 20:40:29,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory was 49.4MB in the beginning and 49.4MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.48ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 61.6MB in the beginning and 81.4MB in the end (delta: -19.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.46ms. Allocated memory is still 109.1MB. Free memory was 81.4MB in the beginning and 79.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.52ms. Allocated memory is still 109.1MB. Free memory was 79.3MB in the beginning and 78.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 289.57ms. Allocated memory is still 109.1MB. Free memory was 78.2MB in the beginning and 67.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3685.82ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 67.3MB in the beginning and 75.1MB in the end (delta: -7.8MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: IllegalArgumentException: null de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: IllegalArgumentException: null: de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-22 20:40:29,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 20:40:29,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalArgumentException: null