./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/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 205669a0469477740fa35099dd0e4ee1e635b686 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/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: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:20:01,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:20:01,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:20:01,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:20:01,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:20:01,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:20:01,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:20:01,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:20:01,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:20:01,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:20:01,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:20:01,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:20:01,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:20:01,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:20:01,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:20:01,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:20:01,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:20:01,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:20:01,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:20:01,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:20:01,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:20:01,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:20:01,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:20:01,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:20:01,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:20:01,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:20:01,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:20:01,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:20:01,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:20:01,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:20:01,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:20:01,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:20:01,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:20:01,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:20:01,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:20:01,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:20:01,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:20:01,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:20:01,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:20:01,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:20:01,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:20:01,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 23:20:01,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:20:01,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:20:01,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:20:01,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:20:01,352 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:20:01,352 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:20:01,353 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:20:01,353 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:20:01,353 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:20:01,353 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:20:01,355 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:20:01,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:20:01,355 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:20:01,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:20:01,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:20:01,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:20:01,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:20:01,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:20:01,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:20:01,357 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:20:01,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:20:01,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:20:01,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:20:01,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:20:01,359 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:20:01,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:20:01,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:20:01,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:20:01,360 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:20:01,362 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:20:01,363 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:/tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 205669a0469477740fa35099dd0e4ee1e635b686 [2020-11-29 23:20:01,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:20:01,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:20:01,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:20:01,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:20:01,791 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:20:01,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex2.i [2020-11-29 23:20:01,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/data/ede20f470/7e0b3078723f42f48293e50a9caad3cf/FLAG563e62ef1 [2020-11-29 23:20:02,414 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:20:02,415 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex2.i [2020-11-29 23:20:02,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/data/ede20f470/7e0b3078723f42f48293e50a9caad3cf/FLAG563e62ef1 [2020-11-29 23:20:02,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/bin/uautomizer/data/ede20f470/7e0b3078723f42f48293e50a9caad3cf [2020-11-29 23:20:02,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:20:02,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:20:02,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:20:02,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:20:02,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:20:02,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:20:02" (1/1) ... [2020-11-29 23:20:02,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46025b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:02, skipping insertion in model container [2020-11-29 23:20:02,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:20:02" (1/1) ... [2020-11-29 23:20:02,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:20:02,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:20:03,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:20:03,102 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:20:03,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:20:03,136 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:20:03,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03 WrapperNode [2020-11-29 23:20:03,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:20:03,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:20:03,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:20:03,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:20:03,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (1/1) ... [2020-11-29 23:20:03,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (1/1) ... [2020-11-29 23:20:03,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:20:03,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:20:03,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:20:03,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:20:03,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (1/1) ... [2020-11-29 23:20:03,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (1/1) ... [2020-11-29 23:20:03,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (1/1) ... [2020-11-29 23:20:03,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (1/1) ... [2020-11-29 23:20:03,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (1/1) ... [2020-11-29 23:20:03,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (1/1) ... [2020-11-29 23:20:03,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (1/1) ... [2020-11-29 23:20:03,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:20:03,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:20:03,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:20:03,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:20:03,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/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 [2020-11-29 23:20:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:20:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-11-29 23:20:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-11-29 23:20:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 23:20:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:20:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:20:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:20:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:20:03,570 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:20:03,570 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 23:20:03,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:20:03 BoogieIcfgContainer [2020-11-29 23:20:03,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:20:03,592 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:20:03,592 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:20:03,596 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:20:03,596 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:20:03,597 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:20:02" (1/3) ... [2020-11-29 23:20:03,611 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42fef9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:20:03, skipping insertion in model container [2020-11-29 23:20:03,611 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:20:03,611 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:20:03" (2/3) ... [2020-11-29 23:20:03,612 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42fef9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:20:03, skipping insertion in model container [2020-11-29 23:20:03,612 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:20:03,612 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:20:03" (3/3) ... [2020-11-29 23:20:03,613 INFO L373 chiAutomizerObserver]: Analyzing ICFG rec_malloc_ex2.i [2020-11-29 23:20:03,690 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:20:03,690 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:20:03,690 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:20:03,690 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:20:03,691 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:20:03,691 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:20:03,691 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:20:03,691 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:20:03,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-29 23:20:03,746 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 23:20:03,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:20:03,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:20:03,759 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 23:20:03,759 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:20:03,759 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:20:03,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-29 23:20:03,763 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 23:20:03,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:20:03,764 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:20:03,764 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 23:20:03,765 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:20:03,775 INFO L794 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 9#L-1true havoc main_#res;havoc main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~mem11, main_#t~mem13, main_#t~ret12, main_~op~0.base, main_~op~0.offset, main_#t~mem9, main_~ip~0.base, main_~ip~0.offset;call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~ip~0.base, main_~ip~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~ip~0.base, main_~ip~0.offset, 4);havoc main_#t~nondet8; 7#L23-3true [2020-11-29 23:20:03,779 INFO L796 eck$LassoCheckResult]: Loop: 7#L23-3true call main_#t~mem9 := read~int(main_~ip~0.base, main_~ip~0.offset, 4); 12#L23-1true assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call main_#t~mem11 := read~int(main_~ip~0.base, main_~ip~0.offset, 4);call write~int(main_#t~mem11, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~mem11;call main_#t~mem13 := read~int(main_~ip~0.base, main_~ip~0.offset, 4); 3#L26true call main_#t~ret12 := rec(main_~op~0.base, main_~op~0.offset, main_~ip~0.base, main_~ip~0.offset);< 4#recENTRYtrue ~p.base, ~p.offset := #in~p.base, #in~p.offset;~up.base, ~up.offset := #in~up.base, #in~up.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 10#L9true assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);call ULTIMATE.dealloc(~up.base, ~up.offset);#res := ~pv~0; 15#recFINALtrue assume true; 13#recEXITtrue >#31#return; 17#L26-1true call write~int(main_#t~mem13 + main_#t~ret12, main_~ip~0.base, main_~ip~0.offset, 4);havoc main_#t~ret12;havoc main_#t~mem13; 7#L23-3true [2020-11-29 23:20:03,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:20:03,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 1 times [2020-11-29 23:20:03,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:20:03,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854659000] [2020-11-29 23:20:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:20:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:20:03,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:20:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:20:03,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:20:04,021 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:20:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:20:04,027 INFO L82 PathProgramCache]: Analyzing trace with hash -5927165, now seen corresponding path program 1 times [2020-11-29 23:20:04,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:20:04,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291645962] [2020-11-29 23:20:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:20:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 23:20:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:20:04,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291645962] [2020-11-29 23:20:04,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:20:04,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:20:04,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604767950] [2020-11-29 23:20:04,346 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:20:04,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:20:04,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:20:04,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:20:04,372 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 7 states. [2020-11-29 23:20:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:20:04,595 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-11-29 23:20:04,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:20:04,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2020-11-29 23:20:04,601 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 23:20:04,608 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 16 transitions. [2020-11-29 23:20:04,609 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 23:20:04,610 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 23:20:04,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2020-11-29 23:20:04,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:20:04,618 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 23:20:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2020-11-29 23:20:04,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 23:20:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 23:20:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-29 23:20:04,661 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 23:20:04,661 INFO L594 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 23:20:04,661 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:20:04,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2020-11-29 23:20:04,663 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 23:20:04,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:20:04,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:20:04,664 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 23:20:04,664 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:20:04,665 INFO L794 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 51#L-1 havoc main_#res;havoc main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~mem11, main_#t~mem13, main_#t~ret12, main_~op~0.base, main_~op~0.offset, main_#t~mem9, main_~ip~0.base, main_~ip~0.offset;call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~ip~0.base, main_~ip~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~ip~0.base, main_~ip~0.offset, 4);havoc main_#t~nondet8; 52#L23-3 [2020-11-29 23:20:04,665 INFO L796 eck$LassoCheckResult]: Loop: 52#L23-3 call main_#t~mem9 := read~int(main_~ip~0.base, main_~ip~0.offset, 4); 59#L23-1 assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call main_#t~mem11 := read~int(main_~ip~0.base, main_~ip~0.offset, 4);call write~int(main_#t~mem11, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~mem11;call main_#t~mem13 := read~int(main_~ip~0.base, main_~ip~0.offset, 4); 54#L26 call main_#t~ret12 := rec(main_~op~0.base, main_~op~0.offset, main_~ip~0.base, main_~ip~0.offset);< 57#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;~up.base, ~up.offset := #in~up.base, #in~up.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 53#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~upn~0.base, ~upn~0.offset := #t~malloc3.base, #t~malloc3.offset;call #t~mem4 := read~int(~p.base, ~p.offset, 4);#t~post5 := #t~mem4;call write~int(#t~post5 - 1, ~p.base, ~p.offset, 4);havoc #t~post5;havoc #t~mem4; 55#L17 call #t~ret6 := rec(~p.base, ~p.offset, ~upn~0.base, ~upn~0.offset);< 57#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;~up.base, ~up.offset := #in~up.base, #in~up.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 53#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);call ULTIMATE.dealloc(~up.base, ~up.offset);#res := ~pv~0; 56#recFINAL assume true; 60#recEXIT >#29#return; 61#L17-1 #res := #t~ret6;havoc #t~ret6; 62#recFINAL assume true; 64#recEXIT >#31#return; 63#L26-1 call write~int(main_#t~mem13 + main_#t~ret12, main_~ip~0.base, main_~ip~0.offset, 4);havoc main_#t~ret12;havoc main_#t~mem13; 52#L23-3 [2020-11-29 23:20:04,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:20:04,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 2 times [2020-11-29 23:20:04,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:20:04,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905803378] [2020-11-29 23:20:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:20:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:20:04,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:20:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:20:04,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:20:04,700 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:20:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:20:04,701 INFO L82 PathProgramCache]: Analyzing trace with hash -741726607, now seen corresponding path program 1 times [2020-11-29 23:20:04,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:20:04,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117849988] [2020-11-29 23:20:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:20:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 23:20:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 23:20:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 23:20:05,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117849988] [2020-11-29 23:20:05,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142682273] [2020-11-29 23:20:05,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/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 [2020-11-29 23:20:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:05,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-29 23:20:05,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:20:05,349 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-11-29 23:20:05,349 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2020-11-29 23:20:05,351 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:20:05,359 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:20:05,361 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 23:20:05,361 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2020-11-29 23:20:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 23:20:05,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:20:05,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-11-29 23:20:05,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772840755] [2020-11-29 23:20:05,601 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:20:05,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:20:05,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 23:20:05,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-11-29 23:20:05,603 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. cyclomatic complexity: 4 Second operand 16 states. [2020-11-29 23:20:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:20:05,906 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-11-29 23:20:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:20:05,907 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2020-11-29 23:20:05,909 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 23:20:05,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 19 transitions. [2020-11-29 23:20:05,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-29 23:20:05,911 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 23:20:05,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2020-11-29 23:20:05,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:20:05,911 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-29 23:20:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2020-11-29 23:20:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 23:20:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 23:20:05,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-29 23:20:05,915 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-29 23:20:05,915 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-29 23:20:05,915 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:20:05,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2020-11-29 23:20:05,917 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 23:20:05,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:20:05,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:20:05,918 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 23:20:05,919 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 23:20:05,919 INFO L794 eck$LassoCheckResult]: Stem: 167#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 160#L-1 havoc main_#res;havoc main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~mem11, main_#t~mem13, main_#t~ret12, main_~op~0.base, main_~op~0.offset, main_#t~mem9, main_~ip~0.base, main_~ip~0.offset;call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~ip~0.base, main_~ip~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~ip~0.base, main_~ip~0.offset, 4);havoc main_#t~nondet8; 161#L23-3 [2020-11-29 23:20:05,919 INFO L796 eck$LassoCheckResult]: Loop: 161#L23-3 call main_#t~mem9 := read~int(main_~ip~0.base, main_~ip~0.offset, 4); 168#L23-1 assume !!(main_#t~mem9 > 1);havoc main_#t~mem9;call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call main_#t~mem11 := read~int(main_~ip~0.base, main_~ip~0.offset, 4);call write~int(main_#t~mem11, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~mem11;call main_#t~mem13 := read~int(main_~ip~0.base, main_~ip~0.offset, 4); 163#L26 call main_#t~ret12 := rec(main_~op~0.base, main_~op~0.offset, main_~ip~0.base, main_~ip~0.offset);< 166#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;~up.base, ~up.offset := #in~up.base, #in~up.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 162#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~upn~0.base, ~upn~0.offset := #t~malloc3.base, #t~malloc3.offset;call #t~mem4 := read~int(~p.base, ~p.offset, 4);#t~post5 := #t~mem4;call write~int(#t~post5 - 1, ~p.base, ~p.offset, 4);havoc #t~post5;havoc #t~mem4; 164#L17 call #t~ret6 := rec(~p.base, ~p.offset, ~upn~0.base, ~upn~0.offset);< 166#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;~up.base, ~up.offset := #in~up.base, #in~up.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 162#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~malloc3.base, #t~malloc3.offset := #Ultimate.allocOnHeap(4);~upn~0.base, ~upn~0.offset := #t~malloc3.base, #t~malloc3.offset;call #t~mem4 := read~int(~p.base, ~p.offset, 4);#t~post5 := #t~mem4;call write~int(#t~post5 - 1, ~p.base, ~p.offset, 4);havoc #t~post5;havoc #t~mem4; 164#L17 call #t~ret6 := rec(~p.base, ~p.offset, ~upn~0.base, ~upn~0.offset);< 166#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;~up.base, ~up.offset := #in~up.base, #in~up.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 162#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);call ULTIMATE.dealloc(~up.base, ~up.offset);#res := ~pv~0; 165#recFINAL assume true; 169#recEXIT >#29#return; 170#L17-1 #res := #t~ret6;havoc #t~ret6; 171#recFINAL assume true; 176#recEXIT >#29#return; 174#L17-1 #res := #t~ret6;havoc #t~ret6; 175#recFINAL assume true; 173#recEXIT >#31#return; 172#L26-1 call write~int(main_#t~mem13 + main_#t~ret12, main_~ip~0.base, main_~ip~0.offset, 4);havoc main_#t~ret12;havoc main_#t~mem13; 161#L23-3 [2020-11-29 23:20:05,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:20:05,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 3 times [2020-11-29 23:20:05,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:20:05,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083733201] [2020-11-29 23:20:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:20:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:20:05,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:20:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:20:05,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:20:05,942 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:20:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:20:05,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1620168125, now seen corresponding path program 2 times [2020-11-29 23:20:05,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:20:05,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443540162] [2020-11-29 23:20:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:20:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:06,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 23:20:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 23:20:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:06,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 23:20:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 23:20:06,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443540162] [2020-11-29 23:20:06,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964035158] [2020-11-29 23:20:06,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87b609ec-9b01-44ed-a4bd-4339224a52ae/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 [2020-11-29 23:20:06,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:20:06,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:20:06,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-29 23:20:06,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:20:06,411 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-11-29 23:20:06,412 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2020-11-29 23:20:06,413 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:20:06,423 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:20:06,424 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 23:20:06,425 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:22 [2020-11-29 23:21:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 3 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 23:21:07,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:21:07,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2020-11-29 23:21:07,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699576003] [2020-11-29 23:21:07,929 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:21:07,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:21:07,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 23:21:07,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=324, Unknown=5, NotChecked=0, Total=380 [2020-11-29 23:21:07,931 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand 20 states. [2020-11-29 23:22:21,656 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2020-11-29 23:23:11,233 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2020-11-29 23:23:48,647 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2020-11-29 23:24:12,201 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) stderr output: (error "out of memory") [2020-11-29 23:24:12,202 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkValidity(IncrementalHoareTripleChecker.java:676) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.refineFinite(BuchiCegarLoop.java:960) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:535) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:382) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 39 more [2020-11-29 23:24:12,206 INFO L168 Benchmark]: Toolchain (without parser) took 249427.74 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 65.6 MB in the beginning and 77.5 MB in the end (delta: -11.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:24:12,207 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 96.5 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:24:12,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.34 ms. Allocated memory is still 96.5 MB. Free memory was 65.3 MB in the beginning and 74.0 MB in the end (delta: -8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:24:12,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.19 ms. Allocated memory is still 96.5 MB. Free memory was 74.0 MB in the beginning and 72.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:24:12,210 INFO L168 Benchmark]: Boogie Preprocessor took 27.55 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:24:12,210 INFO L168 Benchmark]: RCFGBuilder took 387.51 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 58.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:24:12,212 INFO L168 Benchmark]: BuchiAutomizer took 248612.08 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 77.5 MB in the end (delta: -19.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:24:12,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 96.5 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.34 ms. Allocated memory is still 96.5 MB. Free memory was 65.3 MB in the beginning and 74.0 MB in the end (delta: -8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.19 ms. Allocated memory is still 96.5 MB. Free memory was 74.0 MB in the beginning and 72.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.55 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 387.51 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 58.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 248612.08 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 77.5 MB in the end (delta: -19.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...