./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes4-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/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 87dcbb1d4539995e5aba39e6053775ca0fac811e ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:15:23,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:15:23,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:15:24,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:15:24,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:15:24,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:15:24,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:15:24,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:15:24,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:15:24,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:15:24,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:15:24,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:15:24,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:15:24,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:15:24,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:15:24,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:15:24,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:15:24,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:15:24,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:15:24,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:15:24,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:15:24,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:15:24,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:15:24,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:15:24,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:15:24,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:15:24,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:15:24,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:15:24,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:15:24,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:15:24,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:15:24,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:15:24,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:15:24,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:15:24,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:15:24,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:15:24,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:15:24,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:15:24,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:15:24,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:15:24,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:15:24,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 19:15:24,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:15:24,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:15:24,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:15:24,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:15:24,162 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:15:24,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:15:24,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:15:24,163 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:15:24,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:15:24,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:15:24,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:15:24,164 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:15:24,164 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:15:24,164 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 19:15:24,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:15:24,164 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 19:15:24,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:15:24,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:15:24,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:15:24,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:15:24,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:15:24,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:15:24,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:15:24,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:15:24,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:15:24,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:15:24,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:15:24,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:15:24,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dcbb1d4539995e5aba39e6053775ca0fac811e [2020-11-29 19:15:24,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:15:24,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:15:24,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:15:24,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:15:24,462 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:15:24,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/scopes4-1.c [2020-11-29 19:15:24,550 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/data/cf513be8f/9bafadab7a314efd8268b5378d9d9f02/FLAGe971ad2a7 [2020-11-29 19:15:24,977 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:15:24,978 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/sv-benchmarks/c/memsafety-ext3/scopes4-1.c [2020-11-29 19:15:24,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/data/cf513be8f/9bafadab7a314efd8268b5378d9d9f02/FLAGe971ad2a7 [2020-11-29 19:15:25,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/data/cf513be8f/9bafadab7a314efd8268b5378d9d9f02 [2020-11-29 19:15:25,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:15:25,391 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 19:15:25,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:15:25,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:15:25,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:15:25,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:15:25" (1/1) ... [2020-11-29 19:15:25,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6294ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25, skipping insertion in model container [2020-11-29 19:15:25,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:15:25" (1/1) ... [2020-11-29 19:15:25,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:15:25,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:15:25,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:15:25,603 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:15:25,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:15:25,638 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:15:25,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25 WrapperNode [2020-11-29 19:15:25,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:15:25,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:15:25,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:15:25,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:15:25,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25" (1/1) ... [2020-11-29 19:15:25,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25" (1/1) ... [2020-11-29 19:15:25,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25" (1/1) ... [2020-11-29 19:15:25,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25" (1/1) ... [2020-11-29 19:15:25,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25" (1/1) ... [2020-11-29 19:15:25,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25" (1/1) ... [2020-11-29 19:15:25,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25" (1/1) ... [2020-11-29 19:15:25,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:15:25,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:15:25,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:15:25,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:15:25,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/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 [2020-11-29 19:15:25,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 19:15:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:15:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure foo2 [2020-11-29 19:15:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-29 19:15:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 19:15:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-29 19:15:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure foo2 [2020-11-29 19:15:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:15:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-29 19:15:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 19:15:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:15:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:15:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 19:15:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:15:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:15:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:15:25,944 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:15:25,945 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-29 19:15:25,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:15:25 BoogieIcfgContainer [2020-11-29 19:15:25,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:15:25,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:15:25,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:15:25,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:15:25,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:15:25" (1/3) ... [2020-11-29 19:15:25,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d37298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:15:25, skipping insertion in model container [2020-11-29 19:15:25,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:25" (2/3) ... [2020-11-29 19:15:25,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d37298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:15:25, skipping insertion in model container [2020-11-29 19:15:25,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:15:25" (3/3) ... [2020-11-29 19:15:25,970 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes4-1.c [2020-11-29 19:15:25,982 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:15:25,986 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-29 19:15:25,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-29 19:15:26,053 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:15:26,053 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 19:15:26,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:15:26,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:15:26,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:15:26,053 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:15:26,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:15:26,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:15:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-29 19:15:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:15:26,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:15:26,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:15:26,076 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2020-11-29 19:15:26,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:15:26,082 INFO L82 PathProgramCache]: Analyzing trace with hash -325957377, now seen corresponding path program 1 times [2020-11-29 19:15:26,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:15:26,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796608687] [2020-11-29 19:15:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:15:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:26,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:15:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:15:26,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796608687] [2020-11-29 19:15:26,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:15:26,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:15:26,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767038931] [2020-11-29 19:15:26,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:15:26,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:15:26,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:15:26,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:15:26,446 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-11-29 19:15:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:15:26,605 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-11-29 19:15:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:15:26,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 19:15:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:15:26,615 INFO L225 Difference]: With dead ends: 24 [2020-11-29 19:15:26,615 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 19:15:26,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:15:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 19:15:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-29 19:15:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 19:15:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-11-29 19:15:26,654 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 8 [2020-11-29 19:15:26,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:15:26,654 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-11-29 19:15:26,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:15:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-11-29 19:15:26,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:15:26,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:15:26,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:15:26,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:15:26,656 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2020-11-29 19:15:26,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:15:26,657 INFO L82 PathProgramCache]: Analyzing trace with hash -325957376, now seen corresponding path program 1 times [2020-11-29 19:15:26,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:15:26,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208762506] [2020-11-29 19:15:26,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:15:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:26,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:15:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:15:26,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208762506] [2020-11-29 19:15:26,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:15:26,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:15:26,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128495658] [2020-11-29 19:15:26,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:15:26,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:15:26,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:15:26,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:15:26,868 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 4 states. [2020-11-29 19:15:26,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:15:26,948 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-11-29 19:15:26,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:15:26,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 19:15:26,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:15:26,950 INFO L225 Difference]: With dead ends: 18 [2020-11-29 19:15:26,950 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 19:15:26,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:15:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 19:15:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 19:15:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 19:15:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-29 19:15:26,955 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 8 [2020-11-29 19:15:26,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:15:26,955 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-29 19:15:26,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:15:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-29 19:15:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:15:26,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:15:26,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:15:26,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:15:26,957 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2020-11-29 19:15:26,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:15:26,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1826979706, now seen corresponding path program 1 times [2020-11-29 19:15:26,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:15:26,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177512696] [2020-11-29 19:15:26,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:15:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:27,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:15:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:27,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 19:15:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:27,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:15:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:15:27,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177512696] [2020-11-29 19:15:27,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:15:27,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 19:15:27,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888156219] [2020-11-29 19:15:27,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:15:27,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:15:27,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:15:27,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:15:27,158 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 10 states. [2020-11-29 19:15:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:15:27,393 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2020-11-29 19:15:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:15:27,395 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-11-29 19:15:27,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:15:27,395 INFO L225 Difference]: With dead ends: 17 [2020-11-29 19:15:27,396 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 19:15:27,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:15:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 19:15:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 19:15:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 19:15:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2020-11-29 19:15:27,400 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 16 [2020-11-29 19:15:27,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:15:27,400 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2020-11-29 19:15:27,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:15:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2020-11-29 19:15:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:15:27,401 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:15:27,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:15:27,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:15:27,401 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2020-11-29 19:15:27,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:15:27,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1826979705, now seen corresponding path program 1 times [2020-11-29 19:15:27,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:15:27,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198542307] [2020-11-29 19:15:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:15:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:27,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:15:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:27,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 19:15:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:15:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:15:27,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198542307] [2020-11-29 19:15:27,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:15:27,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 19:15:27,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928989903] [2020-11-29 19:15:27,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:15:27,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:15:27,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:15:27,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:15:27,696 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand 10 states. [2020-11-29 19:15:27,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:15:27,960 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-29 19:15:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:15:27,961 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-11-29 19:15:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:15:27,961 INFO L225 Difference]: With dead ends: 16 [2020-11-29 19:15:27,961 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:15:27,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:15:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:15:27,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:15:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:15:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:15:27,963 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-29 19:15:27,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:15:27,963 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:15:27,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:15:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:15:27,964 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:15:27,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:15:27,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:15:27 BoogieIcfgContainer [2020-11-29 19:15:27,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:15:27,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:15:27,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:15:27,973 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:15:27,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:15:25" (3/4) ... [2020-11-29 19:15:27,976 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:15:27,983 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-29 19:15:27,983 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2020-11-29 19:15:27,983 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-29 19:15:27,984 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo2 [2020-11-29 19:15:27,991 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 19:15:27,992 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-29 19:15:27,992 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:15:27,992 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:15:28,053 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_71695282-26c8-4f80-a281-14c0846f6890/bin/uautomizer/witness.graphml [2020-11-29 19:15:28,053 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:15:28,055 INFO L168 Benchmark]: Toolchain (without parser) took 2663.23 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 84.0 MB in the beginning and 120.3 MB in the end (delta: -36.3 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:15:28,056 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:15:28,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.60 ms. Allocated memory is still 117.4 MB. Free memory was 84.0 MB in the beginning and 95.1 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:15:28,057 INFO L168 Benchmark]: Boogie Preprocessor took 29.73 ms. Allocated memory is still 117.4 MB. Free memory was 95.1 MB in the beginning and 93.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:15:28,058 INFO L168 Benchmark]: RCFGBuilder took 275.81 ms. Allocated memory is still 117.4 MB. Free memory was 93.6 MB in the beginning and 80.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:15:28,058 INFO L168 Benchmark]: TraceAbstraction took 2023.65 ms. Allocated memory is still 117.4 MB. Free memory was 80.4 MB in the beginning and 40.4 MB in the end (delta: 40.0 MB). Peak memory consumption was 41.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:15:28,059 INFO L168 Benchmark]: Witness Printer took 80.91 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 40.4 MB in the beginning and 120.3 MB in the end (delta: -79.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:15:28,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 48.5 MB in the beginning and 48.4 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.60 ms. Allocated memory is still 117.4 MB. Free memory was 84.0 MB in the beginning and 95.1 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.73 ms. Allocated memory is still 117.4 MB. Free memory was 95.1 MB in the beginning and 93.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 275.81 ms. Allocated memory is still 117.4 MB. Free memory was 93.6 MB in the beginning and 80.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2023.65 ms. Allocated memory is still 117.4 MB. Free memory was 80.4 MB in the beginning and 40.4 MB in the end (delta: 40.0 MB). Peak memory consumption was 41.8 MB. Max. memory is 16.1 GB. * Witness Printer took 80.91 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 40.4 MB in the beginning and 120.3 MB in the end (delta: -79.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 36 SDslu, 53 SDs, 0 SdLazy, 197 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 4757 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...