./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i -s /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/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 32bit --witnessprinter.graph.data.programhash fba36da5e1e25c0eb21d7d749a840ca84da8c0fc .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:15,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:15,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:15,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:15,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:15,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:15,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:15,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:15,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:15,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:15,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:15,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:15,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:15,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:15,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:15,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:15,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:15,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:15,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:15,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:15,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:15,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:15,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:15,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:15,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:15,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:15,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:15,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:15,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:15,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:15,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:15,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:15,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:15,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:15,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:15,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:15,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:15,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:15,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:15,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:15,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:15,561 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:55:15,574 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:15,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:15,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:15,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:15,575 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:15,575 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:55:15,576 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:55:15,576 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:55:15,576 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:55:15,576 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:55:15,576 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:55:15,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:15,577 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:15,577 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:55:15,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:15,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:15,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:15,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:55:15,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:55:15,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:55:15,578 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:15,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:15,579 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:55:15,579 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:15,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:55:15,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:15,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:15,579 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:55:15,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:15,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:15,580 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:55:15,581 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:55:15,581 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/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fba36da5e1e25c0eb21d7d749a840ca84da8c0fc [2019-10-22 08:55:15,613 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:15,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:15,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:15,628 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:15,629 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:15,629 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i [2019-10-22 08:55:15,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/data/1da3ee040/3e89a768d606483496a01c325dbd5d5b/FLAG2cb1ebdb8 [2019-10-22 08:55:16,132 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:16,133 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i [2019-10-22 08:55:16,145 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/data/1da3ee040/3e89a768d606483496a01c325dbd5d5b/FLAG2cb1ebdb8 [2019-10-22 08:55:16,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/data/1da3ee040/3e89a768d606483496a01c325dbd5d5b [2019-10-22 08:55:16,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:16,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:16,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:16,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:16,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:16,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:16" (1/1) ... [2019-10-22 08:55:16,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e88636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:16, skipping insertion in model container [2019-10-22 08:55:16,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:16" (1/1) ... [2019-10-22 08:55:16,677 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:16,709 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:17,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:17,051 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:17,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:17,152 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:17,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17 WrapperNode [2019-10-22 08:55:17,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:17,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:17,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:17,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:17,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (1/1) ... [2019-10-22 08:55:17,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (1/1) ... [2019-10-22 08:55:17,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:17,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:17,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:17,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:17,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (1/1) ... [2019-10-22 08:55:17,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (1/1) ... [2019-10-22 08:55:17,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (1/1) ... [2019-10-22 08:55:17,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (1/1) ... [2019-10-22 08:55:17,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (1/1) ... [2019-10-22 08:55:17,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (1/1) ... [2019-10-22 08:55:17,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (1/1) ... [2019-10-22 08:55:17,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:17,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:17,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:17,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:17,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/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 [2019-10-22 08:55:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:55:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 08:55:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 08:55:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:17,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:17,749 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:17,750 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:55:17,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:17 BoogieIcfgContainer [2019-10-22 08:55:17,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:17,752 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:55:17,752 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:55:17,756 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:55:17,758 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:17,758 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:55:16" (1/3) ... [2019-10-22 08:55:17,759 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1671791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:55:17, skipping insertion in model container [2019-10-22 08:55:17,760 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:17,760 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:17" (2/3) ... [2019-10-22 08:55:17,760 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1671791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:55:17, skipping insertion in model container [2019-10-22 08:55:17,760 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:17,760 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:17" (3/3) ... [2019-10-22 08:55:17,765 INFO L371 chiAutomizerObserver]: Analyzing ICFG tree_parent_ptr.i [2019-10-22 08:55:17,805 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:55:17,805 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:55:17,805 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:55:17,805 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:17,806 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:17,806 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:55:17,806 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:17,806 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:55:17,817 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-10-22 08:55:17,835 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2019-10-22 08:55:17,835 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:17,835 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:17,841 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:17,841 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:55:17,841 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:55:17,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-10-22 08:55:17,843 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2019-10-22 08:55:17,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:17,843 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:17,843 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:17,844 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:55:17,849 INFO L791 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 10#L-1true havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~nondet17, main_#t~malloc18.base, main_#t~malloc18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~nondet3, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~malloc26.base, main_#t~malloc26.offset, main_#t~mem27.base, main_#t~mem27.offset, main_#t~mem28.base, main_#t~mem28.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~s~0.base, main_~s~0.offset, main_~st~0.base, main_~st~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(12);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 8 + main_~root~0.offset, 4); 18#L541-2true [2019-10-22 08:55:17,849 INFO L793 eck$LassoCheckResult]: Loop: 18#L541-2true assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 20#L530-2true assume !true; 7#L529-5true call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 6#L535true assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnHeap(12);call write~$Pointer$(main_#t~malloc12.base, main_#t~malloc12.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem13.base, main_#t~mem13.offset, 4);havoc main_#t~mem13.base, main_#t~mem13.offset;call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset;call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(main_~n~0.base, main_~n~0.offset, main_#t~mem15.base, 8 + main_#t~mem15.offset, 4);havoc main_#t~mem15.base, main_#t~mem15.offset; 9#L535-2true call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 13#L541true assume !((main_#t~mem16.base == 0 && main_#t~mem16.offset == 0) && 0 != main_#t~nondet17);havoc main_#t~nondet17;havoc main_#t~mem16.base, main_#t~mem16.offset; 18#L541-2true [2019-10-22 08:55:17,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:17,855 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-10-22 08:55:17,861 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:17,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037362694] [2019-10-22 08:55:17,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:17,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:17,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:17,973 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:17,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1235889697, now seen corresponding path program 1 times [2019-10-22 08:55:17,975 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:17,975 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816791535] [2019-10-22 08:55:17,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:17,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:17,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:18,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816791535] [2019-10-22 08:55:18,005 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:18,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:18,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746314580] [2019-10-22 08:55:18,010 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:55:18,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:18,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:55:18,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:55:18,026 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-10-22 08:55:18,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:18,033 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2019-10-22 08:55:18,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:55:18,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 29 transitions. [2019-10-22 08:55:18,035 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2019-10-22 08:55:18,040 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 17 states and 25 transitions. [2019-10-22 08:55:18,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-10-22 08:55:18,042 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-10-22 08:55:18,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 25 transitions. [2019-10-22 08:55:18,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:18,044 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2019-10-22 08:55:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 25 transitions. [2019-10-22 08:55:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 08:55:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 08:55:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2019-10-22 08:55:18,072 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2019-10-22 08:55:18,072 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2019-10-22 08:55:18,072 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:55:18,072 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 25 transitions. [2019-10-22 08:55:18,073 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2019-10-22 08:55:18,073 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:18,073 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:18,073 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:18,073 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:18,073 INFO L791 eck$LassoCheckResult]: Stem: 64#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 61#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~nondet17, main_#t~malloc18.base, main_#t~malloc18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~nondet3, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~malloc26.base, main_#t~malloc26.offset, main_#t~mem27.base, main_#t~mem27.offset, main_#t~mem28.base, main_#t~mem28.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~s~0.base, main_~s~0.offset, main_~st~0.base, main_~st~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(12);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 8 + main_~root~0.offset, 4); 62#L541-2 [2019-10-22 08:55:18,074 INFO L793 eck$LassoCheckResult]: Loop: 62#L541-2 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 65#L530-2 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 66#L529-1 assume main_#t~short6;call main_#t~mem5.base, main_#t~mem5.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short6 := main_#t~mem5.base != 0 || main_#t~mem5.offset != 0; 50#L529-3 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6; 51#L529-5 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 57#L535 assume (main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11;havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnHeap(12);call write~$Pointer$(main_#t~malloc12.base, main_#t~malloc12.offset, main_~n~0.base, main_~n~0.offset, 4);call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem13.base, main_#t~mem13.offset, 4);havoc main_#t~mem13.base, main_#t~mem13.offset;call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem14.base, 4 + main_#t~mem14.offset, 4);havoc main_#t~mem14.base, main_#t~mem14.offset;call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);call write~$Pointer$(main_~n~0.base, main_~n~0.offset, main_#t~mem15.base, 8 + main_#t~mem15.offset, 4);havoc main_#t~mem15.base, main_#t~mem15.offset; 58#L535-2 call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 60#L541 assume !((main_#t~mem16.base == 0 && main_#t~mem16.offset == 0) && 0 != main_#t~nondet17);havoc main_#t~nondet17;havoc main_#t~mem16.base, main_#t~mem16.offset; 62#L541-2 [2019-10-22 08:55:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:18,074 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2019-10-22 08:55:18,074 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:18,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712281486] [2019-10-22 08:55:18,074 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,075 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:18,108 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:18,108 INFO L82 PathProgramCache]: Analyzing trace with hash 2066931060, now seen corresponding path program 1 times [2019-10-22 08:55:18,108 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:18,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116389082] [2019-10-22 08:55:18,109 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,109 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:18,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116389082] [2019-10-22 08:55:18,240 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:18,240 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:18,240 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618162078] [2019-10-22 08:55:18,240 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:55:18,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:18,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:18,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:18,241 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. cyclomatic complexity: 10 Second operand 5 states. [2019-10-22 08:55:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:18,373 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2019-10-22 08:55:18,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:18,374 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 35 transitions. [2019-10-22 08:55:18,375 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2019-10-22 08:55:18,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 35 transitions. [2019-10-22 08:55:18,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-10-22 08:55:18,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-10-22 08:55:18,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2019-10-22 08:55:18,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:18,378 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-10-22 08:55:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2019-10-22 08:55:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-10-22 08:55:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 08:55:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2019-10-22 08:55:18,381 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2019-10-22 08:55:18,382 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2019-10-22 08:55:18,382 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:55:18,382 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 29 transitions. [2019-10-22 08:55:18,382 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2019-10-22 08:55:18,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:18,383 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:18,383 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:18,383 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:18,383 INFO L791 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 114#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~nondet17, main_#t~malloc18.base, main_#t~malloc18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~nondet3, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~malloc26.base, main_#t~malloc26.offset, main_#t~mem27.base, main_#t~mem27.offset, main_#t~mem28.base, main_#t~mem28.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~s~0.base, main_~s~0.offset, main_~st~0.base, main_~st~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(12);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 8 + main_~root~0.offset, 4); 115#L541-2 [2019-10-22 08:55:18,384 INFO L793 eck$LassoCheckResult]: Loop: 115#L541-2 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 118#L530-2 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 119#L529-1 assume main_#t~short6;call main_#t~mem5.base, main_#t~mem5.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4);main_#t~short6 := main_#t~mem5.base != 0 || main_#t~mem5.offset != 0; 101#L529-3 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6; 102#L529-5 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 108#L535 assume !((main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11);havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset; 109#L535-2 call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 113#L541 assume !((main_#t~mem16.base == 0 && main_#t~mem16.offset == 0) && 0 != main_#t~nondet17);havoc main_#t~nondet17;havoc main_#t~mem16.base, main_#t~mem16.offset; 115#L541-2 [2019-10-22 08:55:18,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:18,384 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2019-10-22 08:55:18,384 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:18,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201025231] [2019-10-22 08:55:18,384 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,385 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:18,407 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:18,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:18,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2066932982, now seen corresponding path program 1 times [2019-10-22 08:55:18,410 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:18,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494774103] [2019-10-22 08:55:18,411 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,411 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:18,435 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:18,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:18,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1537472840, now seen corresponding path program 1 times [2019-10-22 08:55:18,440 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:18,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740872976] [2019-10-22 08:55:18,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:18,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740872976] [2019-10-22 08:55:18,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:18,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:18,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978279458] [2019-10-22 08:55:18,715 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2019-10-22 08:55:18,801 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:18,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:18,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:18,802 INFO L87 Difference]: Start difference. First operand 20 states and 29 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-10-22 08:55:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:18,949 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2019-10-22 08:55:18,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:18,950 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 46 transitions. [2019-10-22 08:55:18,951 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-10-22 08:55:18,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 46 transitions. [2019-10-22 08:55:18,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-10-22 08:55:18,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-10-22 08:55:18,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 46 transitions. [2019-10-22 08:55:18,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:18,953 INFO L688 BuchiCegarLoop]: Abstraction has 33 states and 46 transitions. [2019-10-22 08:55:18,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 46 transitions. [2019-10-22 08:55:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-10-22 08:55:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 08:55:18,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2019-10-22 08:55:18,956 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 39 transitions. [2019-10-22 08:55:18,956 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 39 transitions. [2019-10-22 08:55:18,956 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:55:18,956 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 39 transitions. [2019-10-22 08:55:18,956 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-10-22 08:55:18,957 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:18,957 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:18,957 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:18,957 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:18,958 INFO L791 eck$LassoCheckResult]: Stem: 182#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 180#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~nondet7, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~mem4.base, main_#t~mem4.offset, main_#t~mem5.base, main_#t~mem5.offset, main_#t~short6, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~mem13.base, main_#t~mem13.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~nondet17, main_#t~malloc18.base, main_#t~malloc18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20.base, main_#t~mem20.offset, main_#t~mem21.base, main_#t~mem21.offset, main_#t~nondet3, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~mem23.base, main_#t~mem23.offset, main_#t~mem24.base, main_#t~mem24.offset, main_#t~mem25.base, main_#t~mem25.offset, main_#t~malloc26.base, main_#t~malloc26.offset, main_#t~mem27.base, main_#t~mem27.offset, main_#t~mem28.base, main_#t~mem28.offset, main_#t~malloc29.base, main_#t~malloc29.offset, main_#t~mem30.base, main_#t~mem30.offset, main_~root~0.base, main_~root~0.offset, main_~n~0.base, main_~n~0.offset, main_~s~0.base, main_~s~0.offset, main_~st~0.base, main_~st~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(12);main_~root~0.base, main_~root~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;havoc main_~n~0.base, main_~n~0.offset;call write~$Pointer$(0, 0, main_~root~0.base, main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 4 + main_~root~0.offset, 4);call write~$Pointer$(0, 0, main_~root~0.base, 8 + main_~root~0.offset, 4); 181#L541-2 [2019-10-22 08:55:18,958 INFO L793 eck$LassoCheckResult]: Loop: 181#L541-2 assume !!(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~n~0.base, main_~n~0.offset := main_~root~0.base, main_~root~0.offset; 192#L530-2 call main_#t~mem4.base, main_#t~mem4.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4);main_#t~short6 := main_#t~mem4.base != 0 || main_#t~mem4.offset != 0; 189#L529-1 assume !main_#t~short6; 190#L529-3 assume !main_#t~short6;havoc main_#t~mem4.base, main_#t~mem4.offset;havoc main_#t~mem5.base, main_#t~mem5.offset;havoc main_#t~short6; 195#L529-5 call main_#t~mem10.base, main_#t~mem10.offset := read~$Pointer$(main_~n~0.base, main_~n~0.offset, 4); 193#L535 assume !((main_#t~mem10.base == 0 && main_#t~mem10.offset == 0) && 0 != main_#t~nondet11);havoc main_#t~nondet11;havoc main_#t~mem10.base, main_#t~mem10.offset; 178#L535-2 call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_~n~0.base, 4 + main_~n~0.offset, 4); 179#L541 assume !((main_#t~mem16.base == 0 && main_#t~mem16.offset == 0) && 0 != main_#t~nondet17);havoc main_#t~nondet17;havoc main_#t~mem16.base, main_#t~mem16.offset; 181#L541-2 [2019-10-22 08:55:18,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:18,958 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2019-10-22 08:55:18,958 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:18,958 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721070582] [2019-10-22 08:55:18,958 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,959 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:18,972 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:18,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:18,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2124191284, now seen corresponding path program 1 times [2019-10-22 08:55:18,973 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:18,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054722150] [2019-10-22 08:55:18,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:18,993 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:18,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1480214538, now seen corresponding path program 1 times [2019-10-22 08:55:18,994 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:18,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190026939] [2019-10-22 08:55:18,995 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,995 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:18,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:19,035 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:19,170 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-10-22 08:55:19,400 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-10-22 08:55:19,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:55:19 BoogieIcfgContainer [2019-10-22 08:55:19,534 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:55:19,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:19,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:19,535 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:19,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:17" (3/4) ... [2019-10-22 08:55:19,540 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-10-22 08:55:19,582 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_11b7254e-f351-4ea0-8611-7dab0c4a3778/bin/uautomizer/witness.graphml [2019-10-22 08:55:19,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:19,583 INFO L168 Benchmark]: Toolchain (without parser) took 2921.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 939.1 MB in the beginning and 883.3 MB in the end (delta: 55.9 MB). Peak memory consumption was 171.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:19,584 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:19,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -151.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:19,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:19,585 INFO L168 Benchmark]: Boogie Preprocessor took 31.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:19,585 INFO L168 Benchmark]: RCFGBuilder took 519.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:19,586 INFO L168 Benchmark]: BuchiAutomizer took 1782.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 883.3 MB in the end (delta: 172.2 MB). Peak memory consumption was 172.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:19,586 INFO L168 Benchmark]: Witness Printer took 47.76 ms. Allocated memory is still 1.1 GB. Free memory is still 883.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:19,588 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 490.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -151.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 519.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1782.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 883.3 MB in the end (delta: 172.2 MB). Peak memory consumption was 172.2 MB. Max. memory is 11.5 GB. * Witness Printer took 47.76 ms. Allocated memory is still 1.1 GB. Free memory is still 883.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 28 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 28 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 68 SDtfs, 29 SDslu, 60 SDs, 0 SdLazy, 100 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 527]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=-2} State at position 1 is {s=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@13b23eac=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3d78cb68=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@8c204c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@131ea5e1=0, NULL=-2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2023db71=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@12b1b110=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7ca8c95=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5f0f664=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3ad8bd5c=0, root=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7135401c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@13b23eac=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@767ec7ff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@193919e2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c26c9a7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c029153=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4385fa70=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1effcaff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7135401c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@26749c4a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57bcfb99=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c26c9a7=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@131ea5e1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7ca8c95=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@56d26f97=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3ad8bd5c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72029ceb=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1c4699ea=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@8c204c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@682529df=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2b001c24=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@12b1b110=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@cc29b05=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@56d26f97=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1effcaff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78a60ab7=0, n=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d4e0799=6, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@1c4699ea=0, s=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@193919e2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7b9d5997=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2023db71=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@5f0f664=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@dad258e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@cc29b05=0, root=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@dad258e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7b9d5997=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@4385f052=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72029ceb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@26749c4a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57bcfb99=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@3d78cb68=0, s=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@682529df=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@2b001c24=0, s=0, n=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@4385fa70=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 527]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L523] struct TreeNode* root = malloc(sizeof(*root)), *n; [L524] root->left = ((void *)0) [L525] root->right = ((void *)0) [L526] root->parent = ((void *)0) Loop: [L527] COND TRUE __VERIFIER_nondet_int() [L528] n = root [L529] EXPR n->left [L529] n->left && n->right [L529] COND FALSE !(n->left && n->right) [L535] EXPR n->left [L535] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L541] EXPR n->right [L541] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...