./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fe0bb53bbd87104e98f495a7bffebf6530e8ec16 ................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:48:46,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:48:46,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:48:46,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:48:46,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:48:46,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:48:46,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:48:46,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:48:46,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:48:46,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:48:46,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:48:46,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:48:46,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:48:46,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:48:46,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:48:46,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:48:46,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:48:46,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:48:46,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:48:46,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:48:46,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:48:46,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:48:46,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:48:46,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:48:46,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:48:46,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:48:46,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:48:46,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:48:46,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:48:46,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:48:46,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:48:46,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:48:46,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:48:46,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:48:46,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:48:46,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:48:46,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:48:46,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:48:46,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:48:46,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:48:46,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:48:46,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 20:48:46,392 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:48:46,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:48:46,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:48:46,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:48:46,395 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:48:46,395 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 20:48:46,395 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 20:48:46,395 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 20:48:46,396 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 20:48:46,396 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 20:48:46,396 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 20:48:46,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:48:46,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:48:46,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:48:46,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:48:46,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 20:48:46,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 20:48:46,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 20:48:46,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:48:46,398 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 20:48:46,399 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:48:46,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 20:48:46,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:48:46,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:48:46,402 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 20:48:46,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:48:46,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:48:46,403 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 20:48:46,407 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 20:48:46,408 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe0bb53bbd87104e98f495a7bffebf6530e8ec16 [2019-11-15 20:48:46,467 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:48:46,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:48:46,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:48:46,493 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:48:46,494 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:48:46,496 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i [2019-11-15 20:48:46,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/data/f7ef2ad59/1e89b169abb448bb97d4190ff7b358f2/FLAGc8c2954e3 [2019-11-15 20:48:47,126 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:48:47,127 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i [2019-11-15 20:48:47,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/data/f7ef2ad59/1e89b169abb448bb97d4190ff7b358f2/FLAGc8c2954e3 [2019-11-15 20:48:47,482 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/data/f7ef2ad59/1e89b169abb448bb97d4190ff7b358f2 [2019-11-15 20:48:47,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:48:47,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:48:47,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:48:47,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:48:47,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:48:47,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:48:47" (1/1) ... [2019-11-15 20:48:47,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a31e395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:47, skipping insertion in model container [2019-11-15 20:48:47,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:48:47" (1/1) ... [2019-11-15 20:48:47,504 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:48:47,545 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:48:47,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:48:47,925 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:48:47,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:48:48,025 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:48:48,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48 WrapperNode [2019-11-15 20:48:48,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:48:48,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:48:48,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:48:48,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:48:48,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (1/1) ... [2019-11-15 20:48:48,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (1/1) ... [2019-11-15 20:48:48,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:48:48,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:48:48,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:48:48,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:48:48,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (1/1) ... [2019-11-15 20:48:48,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (1/1) ... [2019-11-15 20:48:48,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (1/1) ... [2019-11-15 20:48:48,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (1/1) ... [2019-11-15 20:48:48,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (1/1) ... [2019-11-15 20:48:48,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (1/1) ... [2019-11-15 20:48:48,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (1/1) ... [2019-11-15 20:48:48,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:48:48,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:48:48,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:48:48,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:48:48,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:48:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 20:48:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 20:48:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 20:48:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:48:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:48:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:48:48,587 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:48:48,587 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 20:48:48,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:48:48 BoogieIcfgContainer [2019-11-15 20:48:48,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:48:48,589 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 20:48:48,589 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 20:48:48,593 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 20:48:48,594 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:48:48,594 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 08:48:47" (1/3) ... [2019-11-15 20:48:48,595 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44c2ef70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 08:48:48, skipping insertion in model container [2019-11-15 20:48:48,595 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:48:48,595 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:48" (2/3) ... [2019-11-15 20:48:48,596 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44c2ef70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 08:48:48, skipping insertion in model container [2019-11-15 20:48:48,596 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:48:48,596 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:48:48" (3/3) ... [2019-11-15 20:48:48,597 INFO L371 chiAutomizerObserver]: Analyzing ICFG fermat-alloca.i [2019-11-15 20:48:48,650 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 20:48:48,650 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 20:48:48,651 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 20:48:48,651 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:48:48,651 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:48:48,651 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 20:48:48,651 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:48:48,651 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 20:48:48,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2019-11-15 20:48:48,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-15 20:48:48,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:48:48,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:48:48,702 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 20:48:48,702 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:48,703 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 20:48:48,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2019-11-15 20:48:48,706 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-15 20:48:48,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:48:48,707 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:48:48,708 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 20:48:48,708 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:48,716 INFO L791 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 7#L-1true havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~malloc4.base, main_#t~malloc4.offset, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~mem6, main_#t~mem7, main_#t~mem8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem13, main_#t~mem14, main_#t~mem15, main_#t~post16, main_#t~mem17, main_#t~mem18, main_#t~mem19, main_#t~post20, main_#t~mem21, main_#t~mem22, main_#t~mem23, main_#t~post24, main_#t~mem25, main_#t~mem26, main_~MAX~0.base, main_~MAX~0.offset, main_~a~0.base, main_~a~0.offset, main_~b~0.base, main_~b~0.offset, main_~c~0.base, main_~c~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnStack(4);main_~MAX~0.base, main_~MAX~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4);main_~a~0.base, main_~a~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;call main_#t~malloc4.base, main_#t~malloc4.offset := #Ultimate.allocOnStack(4);main_~b~0.base, main_~b~0.offset := main_#t~malloc4.base, main_#t~malloc4.offset;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(4);main_~c~0.base, main_~c~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;call write~int(1000, main_~MAX~0.base, main_~MAX~0.offset, 4);call write~int(1, main_~a~0.base, main_~a~0.offset, 4);call write~int(1, main_~b~0.base, main_~b~0.offset, 4);call write~int(1, main_~c~0.base, main_~c~0.offset, 4); 6#L556-2true [2019-11-15 20:48:48,717 INFO L793 eck$LassoCheckResult]: Loop: 6#L556-2true assume !false;call main_#t~mem6 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem7 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem9 := read~int(main_~b~0.base, main_~b~0.offset, 4);call main_#t~mem10 := read~int(main_~b~0.base, main_~b~0.offset, 4);call main_#t~mem11 := read~int(main_~b~0.base, main_~b~0.offset, 4);call main_#t~mem12 := read~int(main_~c~0.base, main_~c~0.offset, 4);call main_#t~mem13 := read~int(main_~c~0.base, main_~c~0.offset, 4);call main_#t~mem14 := read~int(main_~c~0.base, main_~c~0.offset, 4); 4#L557true assume !(main_#t~mem6 * main_#t~mem7 * main_#t~mem8 == main_#t~mem9 * main_#t~mem10 * main_#t~mem11 + main_#t~mem12 * main_#t~mem13 * main_#t~mem14);havoc main_#t~mem8;havoc main_#t~mem9;havoc main_#t~mem14;havoc main_#t~mem10;havoc main_#t~mem6;havoc main_#t~mem11;havoc main_#t~mem7;havoc main_#t~mem13;havoc main_#t~mem12;call main_#t~mem15 := read~int(main_~a~0.base, main_~a~0.offset, 4);main_#t~post16 := main_#t~mem15;call write~int(1 + main_#t~post16, main_~a~0.base, main_~a~0.offset, 4);havoc main_#t~mem15;havoc main_#t~post16;call main_#t~mem17 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem18 := read~int(main_~MAX~0.base, main_~MAX~0.offset, 4); 13#L561true assume main_#t~mem17 > main_#t~mem18;havoc main_#t~mem18;havoc main_#t~mem17;call write~int(1, main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem19 := read~int(main_~b~0.base, main_~b~0.offset, 4);main_#t~post20 := main_#t~mem19;call write~int(1 + main_#t~post20, main_~b~0.base, main_~b~0.offset, 4);havoc main_#t~mem19;havoc main_#t~post20; 15#L561-2true call main_#t~mem21 := read~int(main_~b~0.base, main_~b~0.offset, 4);call main_#t~mem22 := read~int(main_~MAX~0.base, main_~MAX~0.offset, 4); 5#L565true assume main_#t~mem21 > main_#t~mem22;havoc main_#t~mem22;havoc main_#t~mem21;call write~int(1, main_~b~0.base, main_~b~0.offset, 4);call main_#t~mem23 := read~int(main_~c~0.base, main_~c~0.offset, 4);main_#t~post24 := main_#t~mem23;call write~int(1 + main_#t~post24, main_~c~0.base, main_~c~0.offset, 4);havoc main_#t~mem23;havoc main_#t~post24; 10#L565-2true call main_#t~mem25 := read~int(main_~c~0.base, main_~c~0.offset, 4);call main_#t~mem26 := read~int(main_~MAX~0.base, main_~MAX~0.offset, 4); 3#L569true assume !(main_#t~mem25 > main_#t~mem26);havoc main_#t~mem26;havoc main_#t~mem25; 6#L556-2true [2019-11-15 20:48:48,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:48,724 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-11-15 20:48:48,733 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:48,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410564271] [2019-11-15 20:48:48,734 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:48,734 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:48,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:48:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:48:49,009 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:48:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:49,012 INFO L82 PathProgramCache]: Analyzing trace with hash -903226603, now seen corresponding path program 1 times [2019-11-15 20:48:49,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:49,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557781492] [2019-11-15 20:48:49,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:49,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:49,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:49,025 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:48:49,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833153189] [2019-11-15 20:48:49,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:48:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:48:49,248 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:48:49,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:49,251 INFO L82 PathProgramCache]: Analyzing trace with hash 643070227, now seen corresponding path program 1 times [2019-11-15 20:48:49,251 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:49,251 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588710004] [2019-11-15 20:48:49,252 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:49,252 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:49,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:49,295 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:48:49,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060604832] [2019-11-15 20:48:49,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06228f3e-b0d3-40b5-8a72-ccc814a8e2a5/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:49,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-15 20:48:49,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:49,534 INFO L375 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 18 treesize of output 16 [2019-11-15 20:48:49,537 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 20:48:49,600 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:48:49,760 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2019-11-15 20:48:49,760 INFO L341 Elim1Store]: treesize reduction 53, result has 50.0 percent of original size [2019-11-15 20:48:49,761 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 123 treesize of output 60 [2019-11-15 20:48:49,762 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 20:48:49,880 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2019-11-15 20:48:49,881 INFO L567 ElimStorePlain]: treesize reduction 24, result has 71.4 percent of original size [2019-11-15 20:48:49,882 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:48:49,882 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:150, output treesize:52 [2019-11-15 20:48:49,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-15 20:48:49,977 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 20:48:50,115 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-11-15 20:48:50,115 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:48:50,116 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 62 treesize of output 153 [2019-11-15 20:48:50,120 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 20:48:50,150 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 20:48:50,308 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-11-15 20:48:50,308 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:48:50,309 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 86 [2019-11-15 20:48:50,311 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 20:48:50,384 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:48:50,384 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 104 [2019-11-15 20:48:50,386 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-15 20:48:50,800 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2019-11-15 20:48:50,801 INFO L567 ElimStorePlain]: treesize reduction 172, result has 44.9 percent of original size [2019-11-15 20:48:50,802 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-15 20:48:50,802 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:179, output treesize:140 [2019-11-15 20:48:50,930 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2019-11-15 20:48:50,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-15 20:48:50,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:50,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:51,030 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkFeasibilityAndComputeInterpolants(LassoCheck.java:921) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkConcatFeasibility(LassoCheck.java:896) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:829) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:458) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:380) 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:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 20:48:51,034 INFO L168 Benchmark]: Toolchain (without parser) took 3547.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 943.4 MB in the beginning and 913.1 MB in the end (delta: 30.2 MB). Peak memory consumption was 168.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:51,034 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:48:51,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:51,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:51,037 INFO L168 Benchmark]: Boogie Preprocessor took 31.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:48:51,037 INFO L168 Benchmark]: RCFGBuilder took 478.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:51,038 INFO L168 Benchmark]: BuchiAutomizer took 2443.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.1 MB in the end (delta: 172.9 MB). Peak memory consumption was 172.9 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:51,042 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 538.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 478.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2443.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.1 MB in the end (delta: 172.9 MB). Peak memory consumption was 172.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...