./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/StructInitialization2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/StructInitialization2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40aebfbfcf1ace3ae19699b445fb033c37125741 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:47:57,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:57,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:57,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:57,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:57,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:57,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:57,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:57,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:57,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:57,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:57,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:57,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:57,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:57,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:57,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:57,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:57,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:57,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:57,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:57,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:57,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:57,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:57,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:57,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:57,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:57,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:57,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:57,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:57,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:57,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:57,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:57,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:57,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:57,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:57,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:57,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:57,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:57,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:57,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:57,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:57,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:47:57,657 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:57,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:57,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:57,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:57,667 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:57,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:57,668 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:47:57,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:47:57,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:47:57,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:47:57,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:57,669 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:47:57,669 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:47:57,669 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:47:57,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:47:57,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:47:57,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:47:57,670 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:47:57,670 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:47:57,671 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:57,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:57,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:57,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:47:57,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:47:57,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:57,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:57,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:47:57,674 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:47:57,674 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:47:57,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:47:57,674 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_1b186325-fb11-4b70-a3d7-1af4d93fe591/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(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 40aebfbfcf1ace3ae19699b445fb033c37125741 [2019-11-25 08:47:57,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:57,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:57,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:57,857 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:57,857 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:57,858 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/StructInitialization2.c [2019-11-25 08:47:57,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/data/f3cf7a8cf/83c5cb4590e3477d85e9838abb9ba601/FLAG8e9a681ab [2019-11-25 08:47:58,323 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:58,324 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/sv-benchmarks/c/ldv-memsafety/StructInitialization2.c [2019-11-25 08:47:58,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/data/f3cf7a8cf/83c5cb4590e3477d85e9838abb9ba601/FLAG8e9a681ab [2019-11-25 08:47:58,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/data/f3cf7a8cf/83c5cb4590e3477d85e9838abb9ba601 [2019-11-25 08:47:58,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:58,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:47:58,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:58,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:58,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:58,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:58" (1/1) ... [2019-11-25 08:47:58,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b3a69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:58, skipping insertion in model container [2019-11-25 08:47:58,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:58" (1/1) ... [2019-11-25 08:47:58,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:58,752 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:58,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:59,023 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:59,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:59,102 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:59,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:59 WrapperNode [2019-11-25 08:47:59,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:59,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:59,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:59,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:59,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:59" (1/1) ... [2019-11-25 08:47:59,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:59" (1/1) ... [2019-11-25 08:47:59,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:59" (1/1) ... [2019-11-25 08:47:59,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:59" (1/1) ... [2019-11-25 08:47:59,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:59" (1/1) ... [2019-11-25 08:47:59,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:59" (1/1) ... [2019-11-25 08:47:59,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:59" (1/1) ... [2019-11-25 08:47:59,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:59,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:59,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:59,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:59,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:47:59,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:59,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:47:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:47:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:47:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:47:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:47:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-25 08:47:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:47:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2019-11-25 08:47:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-11-25 08:47:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-25 08:47:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:47:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-25 08:47:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:47:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:48:01,405 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:01,406 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-25 08:48:01,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:01 BoogieIcfgContainer [2019-11-25 08:48:01,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:01,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:48:01,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:48:01,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:48:01,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:47:58" (1/3) ... [2019-11-25 08:48:01,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b34d82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:01, skipping insertion in model container [2019-11-25 08:48:01,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:59" (2/3) ... [2019-11-25 08:48:01,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b34d82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:01, skipping insertion in model container [2019-11-25 08:48:01,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:01" (3/3) ... [2019-11-25 08:48:01,417 INFO L109 eAbstractionObserver]: Analyzing ICFG StructInitialization2.c [2019-11-25 08:48:01,427 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:48:01,433 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 81 error locations. [2019-11-25 08:48:01,444 INFO L249 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2019-11-25 08:48:01,462 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:48:01,462 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:48:01,463 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:48:01,463 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:01,463 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:01,463 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:48:01,463 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:01,463 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:48:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2019-11-25 08:48:01,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:48:01,491 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:01,492 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:48:01,492 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr80ENSURES_VIOLATIONMEMORY_LEAK, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr79REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION]=== [2019-11-25 08:48:01,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:01,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1202819620, now seen corresponding path program 1 times [2019-11-25 08:48:01,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:48:01,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1758645928] [2019-11-25 08:48:01,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:48:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:01,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:48:01,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:02,098 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 25 [2019-11-25 08:48:02,099 INFO L343 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2019-11-25 08:48:02,100 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2019-11-25 08:48:02,100 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:02,163 INFO L567 ElimStorePlain]: treesize reduction 10, result has 79.6 percent of original size [2019-11-25 08:48:02,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-25 08:48:02,170 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-25 08:48:02,170 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:18, output treesize:39 [2019-11-25 08:48:02,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-25 08:48:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:02,196 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:48:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:02,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1758645928] [2019-11-25 08:48:02,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:02,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:48:02,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961201269] [2019-11-25 08:48:02,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:48:02,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:48:02,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:48:02,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:48:02,248 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 3 states. [2019-11-25 08:48:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:02,714 INFO L93 Difference]: Finished difference Result 118 states and 117 transitions. [2019-11-25 08:48:02,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:48:02,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-25 08:48:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:02,725 INFO L225 Difference]: With dead ends: 118 [2019-11-25 08:48:02,725 INFO L226 Difference]: Without dead ends: 113 [2019-11-25 08:48:02,727 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:48:02,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-11-25 08:48:02,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-11-25 08:48:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-11-25 08:48:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 112 transitions. [2019-11-25 08:48:02,781 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 112 transitions. Word has length 6 [2019-11-25 08:48:02,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:02,781 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 112 transitions. [2019-11-25 08:48:02,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:48:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 112 transitions. [2019-11-25 08:48:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:48:02,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:02,782 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:48:02,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:48:02,987 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr80ENSURES_VIOLATIONMEMORY_LEAK, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr79REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION]=== [2019-11-25 08:48:02,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:02,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1202819621, now seen corresponding path program 1 times [2019-11-25 08:48:02,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:48:02,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [394350858] [2019-11-25 08:48:02,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:48:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:03,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:48:03,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:03,534 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2019-11-25 08:48:03,535 INFO L343 Elim1Store]: treesize reduction 51, result has 53.2 percent of original size [2019-11-25 08:48:03,536 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 63 [2019-11-25 08:48:03,536 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:03,645 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2019-11-25 08:48:03,646 INFO L567 ElimStorePlain]: treesize reduction 30, result has 54.5 percent of original size [2019-11-25 08:48:03,648 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:03,648 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:19, output treesize:9 [2019-11-25 08:48:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:03,659 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:48:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:03,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [394350858] [2019-11-25 08:48:03,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:03,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:48:03,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619788572] [2019-11-25 08:48:03,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:48:03,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:48:03,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:48:03,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:03,755 INFO L87 Difference]: Start difference. First operand 113 states and 112 transitions. Second operand 4 states. [2019-11-25 08:48:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:04,004 INFO L93 Difference]: Finished difference Result 73 states and 72 transitions. [2019-11-25 08:48:04,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:48:04,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-25 08:48:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:04,005 INFO L225 Difference]: With dead ends: 73 [2019-11-25 08:48:04,006 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:48:04,006 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:48:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:48:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:48:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:48:04,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-11-25 08:48:04,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:04,008 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:04,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:48:04,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:48:04,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:48:04,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:48:04,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:48:04 BoogieIcfgContainer [2019-11-25 08:48:04,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:48:04,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:04,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:04,218 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:04,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:01" (3/4) ... [2019-11-25 08:48:04,222 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:48:04,232 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-25 08:48:04,233 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-25 08:48:04,246 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 106 nodes and edges [2019-11-25 08:48:04,249 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2019-11-25 08:48:04,250 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2019-11-25 08:48:04,250 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-25 08:48:04,251 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-25 08:48:04,251 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:48:04,324 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1b186325-fb11-4b70-a3d7-1af4d93fe591/bin/uautomizer/witness.graphml [2019-11-25 08:48:04,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:04,325 INFO L168 Benchmark]: Toolchain (without parser) took 5610.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.8 MB). Free memory was 951.4 MB in the beginning and 921.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 209.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:04,326 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:04,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.8 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -217.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:04,327 INFO L168 Benchmark]: Boogie Preprocessor took 67.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:04,327 INFO L168 Benchmark]: RCFGBuilder took 2236.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:04,327 INFO L168 Benchmark]: TraceAbstraction took 2805.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 926.9 MB in the end (delta: 175.5 MB). Peak memory consumption was 175.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:04,328 INFO L168 Benchmark]: Witness Printer took 109.33 ms. Allocated memory is still 1.2 GB. Free memory was 926.9 MB in the beginning and 921.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:04,330 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 386.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.8 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -217.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 67.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 2236.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2805.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 926.9 MB in the end (delta: 175.5 MB). Peak memory consumption was 175.5 MB. Max. memory is 11.5 GB. * Witness Printer took 109.33 ms. Allocated memory is still 1.2 GB. Free memory was 926.9 MB in the beginning and 921.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 128]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 129]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 81 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 159 locations, 81 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 246 SDslu, 2 SDs, 0 SdLazy, 119 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 840 SizeOfPredicates, 7 NumberOfNonLiveVariables, 524 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...