./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.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_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/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 a6853fb9e064ccfef5e54a8bac94eb86beeed80f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:59:59,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:59:59,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:59:59,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:59:59,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:59:59,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:59:59,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:59:59,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:59:59,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:59:59,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:59:59,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:59:59,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:59:59,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:59:59,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:59:59,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:59:59,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:59:59,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:59:59,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:59:59,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:59:59,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:59:59,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:59:59,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:59:59,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:59:59,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:59:59,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:59:59,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:59:59,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:59:59,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:59:59,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:59:59,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:59:59,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:59:59,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:59:59,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:59:59,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:59:59,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:59:59,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:59:59,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:59:59,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:59:59,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:59:59,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:59:59,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:59:59,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:00:00,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:00,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:00,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:00,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:00,017 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:00,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:00,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:00:00,018 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:00:00,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:00:00,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:00:00,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:00,019 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:00:00,019 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:00:00,019 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:00:00,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:00:00,020 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:00:00,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:00:00,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:00,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:00,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:00,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:00:00,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:00:00,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:00,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:00,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:00:00,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:00:00,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:00:00,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:00,023 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_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2020-11-28 03:00:00,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:00,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:00,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:00,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:00,301 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:00,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2020-11-28 03:00:00,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/data/fba3b4300/75d82ff0b1e2444fa9ee811df9b630ed/FLAGe21d23ee5 [2020-11-28 03:00:00,829 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:00,830 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2020-11-28 03:00:00,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/data/fba3b4300/75d82ff0b1e2444fa9ee811df9b630ed/FLAGe21d23ee5 [2020-11-28 03:00:01,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/data/fba3b4300/75d82ff0b1e2444fa9ee811df9b630ed [2020-11-28 03:00:01,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:01,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:00:01,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:01,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:01,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:01,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:01" (1/1) ... [2020-11-28 03:00:01,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183c4c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01, skipping insertion in model container [2020-11-28 03:00:01,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:01" (1/1) ... [2020-11-28 03:00:01,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:01,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:01,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:01,441 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:01,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:01,474 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:01,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01 WrapperNode [2020-11-28 03:00:01,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:01,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:01,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:01,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:01,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01" (1/1) ... [2020-11-28 03:00:01,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01" (1/1) ... [2020-11-28 03:00:01,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01" (1/1) ... [2020-11-28 03:00:01,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01" (1/1) ... [2020-11-28 03:00:01,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01" (1/1) ... [2020-11-28 03:00:01,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01" (1/1) ... [2020-11-28 03:00:01,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01" (1/1) ... [2020-11-28 03:00:01,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:01,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:01,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:01,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:01,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/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 [2020-11-28 03:00:01,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:00:01,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:01,575 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-11-28 03:00:01,575 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-28 03:00:01,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:00:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-11-28 03:00:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-28 03:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:02,083 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:02,084 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 03:00:02,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:02 BoogieIcfgContainer [2020-11-28 03:00:02,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:02,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:00:02,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:00:02,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:00:02,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:01" (1/3) ... [2020-11-28 03:00:02,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2118de02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:02, skipping insertion in model container [2020-11-28 03:00:02,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:01" (2/3) ... [2020-11-28 03:00:02,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2118de02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:02, skipping insertion in model container [2020-11-28 03:00:02,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:02" (3/3) ... [2020-11-28 03:00:02,097 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2020-11-28 03:00:02,108 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:00:02,114 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-11-28 03:00:02,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-11-28 03:00:02,154 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:00:02,155 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:00:02,155 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:00:02,155 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:02,155 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:02,155 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:00:02,155 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:02,155 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:00:02,175 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-28 03:00:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:00:02,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:02,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:02,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:00:02,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:02,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2020-11-28 03:00:02,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:02,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127388085] [2020-11-28 03:00:02,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:02,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127388085] [2020-11-28 03:00:02,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:02,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:00:02,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552252511] [2020-11-28 03:00:02,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:00:02,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:02,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:00:02,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:00:02,396 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-11-28 03:00:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:02,589 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-11-28 03:00:02,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:00:02,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 03:00:02,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:02,607 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:00:02,608 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 03:00:02,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:00:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 03:00:02,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-28 03:00:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 03:00:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-11-28 03:00:02,663 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2020-11-28 03:00:02,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:02,664 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-11-28 03:00:02,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:00:02,664 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-11-28 03:00:02,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:00:02,664 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:02,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:02,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:00:02,665 INFO L429 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:00:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:02,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2020-11-28 03:00:02,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:02,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331341244] [2020-11-28 03:00:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:02,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:02,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331341244] [2020-11-28 03:00:02,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:02,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:02,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742818255] [2020-11-28 03:00:02,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:02,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:02,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:02,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:02,735 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2020-11-28 03:00:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:02,887 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-11-28 03:00:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:00:02,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:00:02,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:02,890 INFO L225 Difference]: With dead ends: 56 [2020-11-28 03:00:02,890 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:00:02,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:02,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:00:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-11-28 03:00:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 03:00:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-11-28 03:00:02,910 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2020-11-28 03:00:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:02,911 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-11-28 03:00:02,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:02,912 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-11-28 03:00:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:00:02,913 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:02,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:02,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:00:02,915 INFO L429 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:00:02,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:02,918 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2020-11-28 03:00:02,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:02,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110341795] [2020-11-28 03:00:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:03,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110341795] [2020-11-28 03:00:03,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:03,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:00:03,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964488210] [2020-11-28 03:00:03,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:00:03,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:03,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:00:03,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:00:03,050 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-11-28 03:00:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:03,273 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-11-28 03:00:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:00:03,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 03:00:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:03,277 INFO L225 Difference]: With dead ends: 47 [2020-11-28 03:00:03,277 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 03:00:03,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:00:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 03:00:03,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-28 03:00:03,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 03:00:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-11-28 03:00:03,283 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2020-11-28 03:00:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:03,283 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-11-28 03:00:03,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:00:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-11-28 03:00:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:00:03,284 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:03,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:03,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:00:03,284 INFO L429 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:00:03,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:03,289 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2020-11-28 03:00:03,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:03,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052879379] [2020-11-28 03:00:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:03,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:03,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052879379] [2020-11-28 03:00:03,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:03,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:00:03,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119345012] [2020-11-28 03:00:03,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:00:03,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:03,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:00:03,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:00:03,435 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 6 states. [2020-11-28 03:00:03,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:03,692 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-11-28 03:00:03,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:00:03,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 03:00:03,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:03,696 INFO L225 Difference]: With dead ends: 72 [2020-11-28 03:00:03,697 INFO L226 Difference]: Without dead ends: 72 [2020-11-28 03:00:03,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:00:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-28 03:00:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2020-11-28 03:00:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:00:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-11-28 03:00:03,706 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2020-11-28 03:00:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:03,706 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-11-28 03:00:03,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:00:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-11-28 03:00:03,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:00:03,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:03,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:03,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:00:03,708 INFO L429 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:00:03,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:03,708 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2020-11-28 03:00:03,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:03,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709097069] [2020-11-28 03:00:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:03,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:03,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709097069] [2020-11-28 03:00:03,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:03,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:00:03,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763242740] [2020-11-28 03:00:03,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:03,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:03,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:03,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:03,785 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2020-11-28 03:00:03,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:03,922 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-11-28 03:00:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:00:03,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:00:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:03,923 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:00:03,924 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 03:00:03,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 03:00:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-28 03:00:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 03:00:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-11-28 03:00:03,932 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2020-11-28 03:00:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:03,932 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-11-28 03:00:03,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-11-28 03:00:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:00:03,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:03,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:03,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:00:03,938 INFO L429 AbstractCegarLoop]: === Iteration 6 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:00:03,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:03,939 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2020-11-28 03:00:03,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:03,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575688616] [2020-11-28 03:00:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:03,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:04,000 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:04,039 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:04,040 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:00:04,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:00:04,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:00:04 BoogieIcfgContainer [2020-11-28 03:00:04,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:00:04,061 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:00:04,061 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:00:04,062 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:00:04,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:02" (3/4) ... [2020-11-28 03:00:04,064 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:00:04,102 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3e04c940-0ec0-4fc0-8709-e38a0d61fdab/bin/uautomizer/witness.graphml [2020-11-28 03:00:04,102 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:00:04,107 INFO L168 Benchmark]: Toolchain (without parser) took 2885.99 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 57.8 MB in the beginning and 83.6 MB in the end (delta: -25.9 MB). Peak memory consumption was 592.4 kB. Max. memory is 16.1 GB. [2020-11-28 03:00:04,108 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 64.7 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:04,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.39 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 69.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:04,109 INFO L168 Benchmark]: Boogie Preprocessor took 37.10 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 67.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:04,110 INFO L168 Benchmark]: RCFGBuilder took 574.12 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 49.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:04,110 INFO L168 Benchmark]: TraceAbstraction took 1970.90 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 49.3 MB in the beginning and 85.7 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:04,111 INFO L168 Benchmark]: Witness Printer took 41.28 ms. Allocated memory is still 119.5 MB. Free memory was 85.7 MB in the beginning and 83.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:04,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 64.7 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.39 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 69.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.10 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 67.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 574.12 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 49.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1970.90 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 49.3 MB in the beginning and 85.7 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 41.28 ms. Allocated memory is still 119.5 MB. Free memory was 85.7 MB in the beginning and 83.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 VAL [b={3:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={3:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, b[i]=402, i=0, n=0, size=1] [L23] a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 200 SDtfs, 125 SDslu, 165 SDs, 0 SdLazy, 439 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, 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, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 incorrect! Received shutdown request...